~hc/RK356X_SDK_RELEASE.git

..	..	@@ -3,7 +3,7 @@
3	3	config 64BIT
4	4	bool "64-bit kernel" if "$(ARCH)" = "x86"
5	5	default "$(ARCH)" != "i386"
6		- ---help---
	6	+ help
7	7	Say yes to build a 64-bit kernel - formerly known as x86_64
8	8	Say no to build a 32-bit kernel - formerly known as i386
9	9
..	..	@@ -14,26 +14,36 @@
14	14	select ARCH_WANT_IPC_PARSE_VERSION
15	15	select CLKSRC_I8253
16	16	select CLONE_BACKWARDS
17		- select HAVE_AOUT
18		- select HAVE_GENERIC_DMA_COHERENT
	17	+ select HAVE_DEBUG_STACKOVERFLOW
19	18	select MODULES_USE_ELF_REL
20	19	select OLD_SIGACTION
21	20	select GENERIC_VDSO_32
	21	+ select ARCH_SPLIT_ARG64
22	22
23	23	config X86_64
24	24	def_bool y
25	25	depends on 64BIT
26	26	# Options that are inherently 64-bit kernel only:
27		- select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) \|\| CMA
28		- select ARCH_SUPPORTS_INT128
	27	+ select ARCH_HAS_GIGANTIC_PAGE
	28	+ select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
	29	+ select ARCH_SUPPORTS_SPECULATIVE_PAGE_FAULT
29	30	select ARCH_USE_CMPXCHG_LOCKREF
30	31	select HAVE_ARCH_SOFT_DIRTY
31	32	select MODULES_USE_ELF_RELA
32	33	select NEED_DMA_MAP_STATE
33	34	select SWIOTLB
34		- select X86_DEV_DMA_OPS
35		- select ARCH_HAS_SYSCALL_WRAPPER
36	35
	36	+config FORCE_DYNAMIC_FTRACE
	37	+ def_bool y
	38	+ depends on X86_32
	39	+ depends on FUNCTION_TRACER
	40	+ select DYNAMIC_FTRACE
	41	+ help
	42	+ We keep the static function tracing (!DYNAMIC_FTRACE) around
	43	+ in order to test the non static function tracing in the
	44	+ generic code, as other architectures still use it. But we
	45	+ only need to keep it around for x86_64. No need to keep it
	46	+ for x86_32. For x86_32, force DYNAMIC_FTRACE.
37	47	#
38	48	# Arch settings
39	49	#
..	..	@@ -47,50 +57,60 @@
47	57	#
48	58	select ACPI_LEGACY_TABLES_LOOKUP if ACPI
49	59	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
50		- select ARCH_CLOCKSOURCE_DATA
51		- select ARCH_DISCARD_MEMBLOCK
	60	+ select ARCH_32BIT_OFF_T if X86_32
	61	+ select ARCH_CLOCKSOURCE_INIT
52	62	select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
53	63	select ARCH_HAS_DEBUG_VIRTUAL
	64	+ select ARCH_HAS_DEBUG_VM_PGTABLE if !X86_PAE
54	65	select ARCH_HAS_DEVMEM_IS_ALLOWED
	66	+ select ARCH_HAS_EARLY_DEBUG if KGDB
55	67	select ARCH_HAS_ELF_RANDOMIZE
56	68	select ARCH_HAS_FAST_MULTIPLIER
57	69	select ARCH_HAS_FILTER_PGPROT
58	70	select ARCH_HAS_FORTIFY_SOURCE
59	71	select ARCH_HAS_GCOV_PROFILE_ALL
60		- select ARCH_HAS_KCOV if X86_64
	72	+ select ARCH_HAS_KCOV if X86_64 && STACK_VALIDATION
	73	+ select ARCH_HAS_MEM_ENCRYPT
61	74	select ARCH_HAS_MEMBARRIER_SYNC_CORE
	75	+ select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
62	76	select ARCH_HAS_PMEM_API if X86_64
	77	+ select ARCH_HAS_PTE_DEVMAP if X86_64
63	78	select ARCH_HAS_PTE_SPECIAL
64		- select ARCH_HAS_REFCOUNT
65	79	select ARCH_HAS_UACCESS_FLUSHCACHE if X86_64
66		- select ARCH_HAS_UACCESS_MCSAFE if X86_64 && X86_MCE
	80	+ select ARCH_HAS_COPY_MC if X86_64
67	81	select ARCH_HAS_SET_MEMORY
68		- select ARCH_HAS_SG_CHAIN
	82	+ select ARCH_HAS_SET_DIRECT_MAP
69	83	select ARCH_HAS_STRICT_KERNEL_RWX
70	84	select ARCH_HAS_STRICT_MODULE_RWX
71	85	select ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
	86	+ select ARCH_HAS_SYSCALL_WRAPPER
72	87	select ARCH_HAS_UBSAN_SANITIZE_ALL
73		- select ARCH_HAS_ZONE_DEVICE if X86_64
	88	+ select ARCH_HAS_DEBUG_WX
74	89	select ARCH_HAVE_NMI_SAFE_CMPXCHG
75	90	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
76	91	select ARCH_MIGHT_HAVE_PC_PARPORT
77	92	select ARCH_MIGHT_HAVE_PC_SERIO
	93	+ select ARCH_STACKWALK
78	94	select ARCH_SUPPORTS_ACPI
79	95	select ARCH_SUPPORTS_ATOMIC_RMW
80	96	select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
81	97	select ARCH_SUPPORTS_LTO_CLANG if X86_64
	98	+ select ARCH_SUPPORTS_LTO_CLANG_THIN if X86_64
82	99	select ARCH_USE_BUILTIN_BSWAP
83	100	select ARCH_USE_QUEUED_RWLOCKS
84	101	select ARCH_USE_QUEUED_SPINLOCKS
	102	+ select ARCH_USE_SYM_ANNOTATIONS
85	103	select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
	104	+ select ARCH_WANT_DEFAULT_BPF_JIT if X86_64
86	105	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
	106	+ select ARCH_WANT_HUGE_PMD_SHARE
	107	+ select ARCH_WANT_LD_ORPHAN_WARN
87	108	select ARCH_WANTS_THP_SWAP if X86_64
88		- select BUILDTIME_EXTABLE_SORT
	109	+ select BUILDTIME_TABLE_SORT
89	110	select CLKEVT_I8253
90	111	select CLOCKSOURCE_VALIDATE_LAST_CYCLE
91	112	select CLOCKSOURCE_WATCHDOG
92	113	select DCACHE_WORD_ACCESS
93		- select DMA_DIRECT_OPS
94	114	select EDAC_ATOMIC_SCRUB
95	115	select EDAC_SUPPORT
96	116	select GENERIC_CLOCKEVENTS
..	..	@@ -100,6 +120,7 @@
100	120	select GENERIC_CPU_AUTOPROBE
101	121	select GENERIC_CPU_VULNERABILITIES
102	122	select GENERIC_EARLY_IOREMAP
	123	+ select GENERIC_ENTRY
103	124	select GENERIC_FIND_FIRST_BIT
104	125	select GENERIC_IOMAP
105	126	select GENERIC_IRQ_EFFECTIVE_AFF_MASK if SMP
..	..	@@ -109,11 +130,15 @@
109	130	select GENERIC_IRQ_RESERVATION_MODE
110	131	select GENERIC_IRQ_SHOW
111	132	select GENERIC_PENDING_IRQ if SMP
	133	+ select GENERIC_PTDUMP
112	134	select GENERIC_SMP_IDLE_THREAD
113	135	select GENERIC_STRNCPY_FROM_USER
114	136	select GENERIC_STRNLEN_USER
115	137	select GENERIC_TIME_VSYSCALL
116	138	select GENERIC_GETTIMEOFDAY
	139	+ select GENERIC_VDSO_TIME_NS
	140	+ select GUP_GET_PTE_LOW_HIGH if X86_PAE
	141	+ select HARDIRQS_SW_RESEND
117	142	select HARDLOCKUP_CHECK_TIMESTAMP if X86_64
118	143	select HAVE_ACPI_APEI if ACPI
119	144	select HAVE_ACPI_APEI_NMI if ACPI
..	..	@@ -121,32 +146,41 @@
121	146	select HAVE_ARCH_AUDITSYSCALL
122	147	select HAVE_ARCH_HUGE_VMAP if X86_64 \|\| X86_PAE
123	148	select HAVE_ARCH_JUMP_LABEL
	149	+ select HAVE_ARCH_JUMP_LABEL_RELATIVE
124	150	select HAVE_ARCH_KASAN if X86_64
	151	+ select HAVE_ARCH_KASAN_VMALLOC if X86_64
	152	+ select HAVE_ARCH_KFENCE
125	153	select HAVE_ARCH_KGDB
126	154	select HAVE_ARCH_MMAP_RND_BITS if MMU
127	155	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
128	156	select HAVE_ARCH_COMPAT_MMAP_BASES if MMU && COMPAT
129		- select HAVE_ARCH_PREL32_RELOCATIONS if !LTO_CLANG
	157	+ select HAVE_ARCH_PREL32_RELOCATIONS
130	158	select HAVE_ARCH_SECCOMP_FILTER
131	159	select HAVE_ARCH_THREAD_STRUCT_WHITELIST
	160	+ select HAVE_ARCH_STACKLEAK
132	161	select HAVE_ARCH_TRACEHOOK
133	162	select HAVE_ARCH_TRANSPARENT_HUGEPAGE
134	163	select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64
	164	+ select HAVE_ARCH_USERFAULTFD_WP if X86_64 && USERFAULTFD
	165	+ select HAVE_ARCH_USERFAULTFD_MINOR if X86_64 && USERFAULTFD
135	166	select HAVE_ARCH_VMAP_STACK if X86_64
136	167	select HAVE_ARCH_WITHIN_STACK_FRAMES
	168	+ select HAVE_ASM_MODVERSIONS
137	169	select HAVE_CMPXCHG_DOUBLE
138	170	select HAVE_CMPXCHG_LOCAL
139	171	select HAVE_CONTEXT_TRACKING if X86_64
140		- select HAVE_COPY_THREAD_TLS
141	172	select HAVE_C_RECORDMCOUNT
	173	+ select HAVE_OBJTOOL_MCOUNT if STACK_VALIDATION
142	174	select HAVE_DEBUG_KMEMLEAK
143		- select HAVE_DEBUG_STACKOVERFLOW
144	175	select HAVE_DMA_CONTIGUOUS
145	176	select HAVE_DYNAMIC_FTRACE
146	177	select HAVE_DYNAMIC_FTRACE_WITH_REGS
	178	+ select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
147	179	select HAVE_EBPF_JIT
148	180	select HAVE_EFFICIENT_UNALIGNED_ACCESS
	181	+ select HAVE_EISA
149	182	select HAVE_EXIT_THREAD
	183	+ select HAVE_FAST_GUP
150	184	select HAVE_FENTRY if X86_64 \|\| DYNAMIC_FTRACE
151	185	select HAVE_FTRACE_MCOUNT_RECORD
152	186	select HAVE_FUNCTION_GRAPH_TRACER
..	..	@@ -155,7 +189,6 @@
155	189	select HAVE_HW_BREAKPOINT
156	190	select HAVE_IDE
157	191	select HAVE_IOREMAP_PROT
158		- select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64
159	192	select HAVE_IRQ_TIME_ACCOUNTING
160	193	select HAVE_KERNEL_BZIP2
161	194	select HAVE_KERNEL_GZIP
..	..	@@ -163,16 +196,17 @@
163	196	select HAVE_KERNEL_LZMA
164	197	select HAVE_KERNEL_LZO
165	198	select HAVE_KERNEL_XZ
	199	+ select HAVE_KERNEL_ZSTD
166	200	select HAVE_KPROBES
167	201	select HAVE_KPROBES_ON_FTRACE
168	202	select HAVE_FUNCTION_ERROR_INJECTION
169	203	select HAVE_KRETPROBES
170	204	select HAVE_KVM
171	205	select HAVE_LIVEPATCH if X86_64
172		- select HAVE_MEMBLOCK
173		- select HAVE_MEMBLOCK_NODE_MAP
174	206	select HAVE_MIXED_BREAKPOINTS_REGS
175	207	select HAVE_MOD_ARCH_SPECIFIC
	208	+ select HAVE_MOVE_PMD
	209	+ select HAVE_MOVE_PUD
176	210	select HAVE_NMI
177	211	select HAVE_OPROFILE
178	212	select HAVE_OPTPROBES
..	..	@@ -180,15 +214,18 @@
180	214	select HAVE_PERF_EVENTS
181	215	select HAVE_PERF_EVENTS_NMI
182	216	select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI
	217	+ select HAVE_PCI
183	218	select HAVE_PERF_REGS
184	219	select HAVE_PERF_USER_STACK_DUMP
185		- select HAVE_PREEMPT_LAZY
186		- select HAVE_RCU_TABLE_FREE if PARAVIRT
187		- select HAVE_RCU_TABLE_INVALIDATE if HAVE_RCU_TABLE_FREE
	220	+ select MMU_GATHER_RCU_TABLE_FREE if PARAVIRT
	221	+ select HAVE_POSIX_CPU_TIMERS_TASK_WORK
188	222	select HAVE_REGS_AND_STACK_ACCESS_API
189	223	select HAVE_RELIABLE_STACKTRACE if X86_64 && (UNWINDER_FRAME_POINTER \|\| UNWINDER_ORC) && STACK_VALIDATION
	224	+ select HAVE_FUNCTION_ARG_ACCESS_API
190	225	select HAVE_STACKPROTECTOR if CC_HAS_SANE_STACKPROTECTOR
191		- select HAVE_STACK_VALIDATION if X86_64 && !LTO_CLANG
	226	+ select HAVE_STACK_VALIDATION if X86_64
	227	+ select HAVE_STATIC_CALL
	228	+ select HAVE_STATIC_CALL_INLINE if HAVE_STACK_VALIDATION
192	229	select HAVE_RSEQ
193	230	select HAVE_SYSCALL_TRACEPOINTS
194	231	select HAVE_UNSTABLE_SCHED_CLOCK
..	..	@@ -197,17 +234,22 @@
197	234	select HOTPLUG_SMT if SMP
198	235	select IRQ_FORCED_THREADING
199	236	select NEED_SG_DMA_LENGTH
200		- select PCI_LOCKLESS_CONFIG
	237	+ select PCI_DOMAINS if PCI
	238	+ select PCI_LOCKLESS_CONFIG if PCI
201	239	select PERF_EVENTS
202	240	select RTC_LIB
203	241	select RTC_MC146818_LIB
204	242	select SPARSE_IRQ
205	243	select SRCU
	244	+ select STACK_VALIDATION if HAVE_STACK_VALIDATION && (HAVE_STATIC_CALL_INLINE \|\| RETPOLINE)
206	245	select SYSCTL_EXCEPTION_TRACE
207	246	select THREAD_INFO_IN_TASK
208	247	select USER_STACKTRACE_SUPPORT
209	248	select VIRT_TO_BUS
	249	+ select HAVE_ARCH_KCSAN if X86_64
210	250	select X86_FEATURE_NAMES if PROC_FS
	251	+ select PROC_PID_ARCH_STATUS if PROC_FS
	252	+ imply IMA_SECURE_AND_OR_TRUSTED_BOOT if EFI
211	253
212	254	config INSTRUCTION_DECODER
213	255	def_bool y
..	..	@@ -217,11 +259,6 @@
217	259	string
218	260	default "elf32-i386" if X86_32
219	261	default "elf64-x86-64" if X86_64
220		-
221		-config ARCH_DEFCONFIG
222		- string
223		- default "arch/x86/configs/i386_defconfig" if X86_32
224		- default "arch/x86/configs/x86_64_defconfig" if X86_64
225	262
226	263	config LOCKDEP_SUPPORT
227	264	def_bool y
..	..	@@ -261,18 +298,9 @@
261	298	config GENERIC_BUG_RELATIVE_POINTERS
262	299	bool
263	300
264		-config GENERIC_HWEIGHT
265		- def_bool y
266		-
267	301	config ARCH_MAY_HAVE_PC_FDC
268	302	def_bool y
269	303	depends on ISA_DMA_API
270		-
271		-config RWSEM_GENERIC_SPINLOCK
272		- def_bool PREEMPT_RT_FULL
273		-
274		-config RWSEM_XCHGADD_ALGORITHM
275		- def_bool !RWSEM_GENERIC_SPINLOCK && !PREEMPT_RT_FULL
276	304
277	305	config GENERIC_CALIBRATE_DELAY
278	306	def_bool y
..	..	@@ -301,9 +329,6 @@
301	329	config ARCH_SUSPEND_POSSIBLE
302	330	def_bool y
303	331
304		-config ARCH_WANT_HUGE_PMD_SHARE
305		- def_bool y
306		-
307	332	config ARCH_WANT_GENERAL_HUGETLB
308	333	def_bool y
309	334
..	..	@@ -312,9 +337,6 @@
312	337
313	338	config AUDIT_ARCH
314	339	def_bool y if X86_64
315		-
316		-config ARCH_SUPPORTS_OPTIMIZED_INLINING
317		- def_bool y
318	340
319	341	config ARCH_SUPPORTS_DEBUG_PAGEALLOC
320	342	def_bool y
..	..	@@ -378,7 +400,7 @@
378	400
379	401	config SMP
380	402	bool "Symmetric multi-processing support"
381		- ---help---
	403	+ help
382	404	This enables support for systems with more than one CPU. If you have
383	405	a system with only one CPU, say N. If you have a system with more
384	406	than one CPU, say Y.
..	..	@@ -398,8 +420,8 @@
398	420	Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
399	421	Management" code will be disabled if you say Y here.
400	422
401		- See also <file:Documentation/x86/i386/IO-APIC.txt>,
402		- <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO available at
	423	+ See also <file:Documentation/x86/i386/IO-APIC.rst>,
	424	+ <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at
403	425	<http://www.tldp.org/docs.html#howto>.
404	426
405	427	If you don't know what to do here, say N.
..	..	@@ -407,7 +429,7 @@
407	429	config X86_FEATURE_NAMES
408	430	bool "Processor feature human-readable names" if EMBEDDED
409	431	default y
410		- ---help---
	432	+ help
411	433	This option compiles in a table of x86 feature bits and corresponding
412	434	names. This is required to support /proc/cpuinfo and a few kernel
413	435	messages. You can disable this to save space, at the expense of
..	..	@@ -418,7 +440,7 @@
418	440	config X86_X2APIC
419	441	bool "Support x2apic"
420	442	depends on X86_LOCAL_APIC && X86_64 && (IRQ_REMAP \|\| HYPERVISOR_GUEST)
421		- ---help---
	443	+ help
422	444	This enables x2apic support on CPUs that have this feature.
423	445
424	446	This allows 32-bit apic IDs (so it can support very large systems),
..	..	@@ -430,34 +452,32 @@
430	452	bool "Enable MPS table" if ACPI \|\| SFI
431	453	default y
432	454	depends on X86_LOCAL_APIC
433		- ---help---
	455	+ help
434	456	For old smp systems that do not have proper acpi support. Newer systems
435	457	(esp with 64bit cpus) with acpi support, MADT and DSDT will override it
436	458
437	459	config GOLDFISH
438		- def_bool y
439		- depends on X86_GOLDFISH
	460	+ def_bool y
	461	+ depends on X86_GOLDFISH
440	462
441		-config RETPOLINE
442		- bool "Avoid speculative indirect branches in kernel"
443		- default y
444		- select STACK_VALIDATION if HAVE_STACK_VALIDATION
445		- help
446		- Compile kernel with the retpoline compiler options to guard against
447		- kernel-to-user data leaks by avoiding speculative indirect
448		- branches. Requires a compiler with -mindirect-branch=thunk-extern
449		- support for full protection. The kernel may run slower.
450		-
451		-config INTEL_RDT
452		- bool "Intel Resource Director Technology support"
453		- default n
454		- depends on X86 && CPU_SUP_INTEL
	463	+config X86_CPU_RESCTRL
	464	+ bool "x86 CPU resource control support"
	465	+ depends on X86 && (CPU_SUP_INTEL \|\| CPU_SUP_AMD)
455	466	select KERNFS
	467	+ select PROC_CPU_RESCTRL if PROC_FS
456	468	help
457		- Select to enable resource allocation and monitoring which are
458		- sub-features of Intel Resource Director Technology(RDT). More
459		- information about RDT can be found in the Intel x86
460		- Architecture Software Developer Manual.
	469	+ Enable x86 CPU resource control support.
	470	+
	471	+ Provide support for the allocation and monitoring of system resources
	472	+ usage by the CPU.
	473	+
	474	+ Intel calls this Intel Resource Director Technology
	475	+ (Intel(R) RDT). More information about RDT can be found in the
	476	+ Intel x86 Architecture Software Developer Manual.
	477	+
	478	+ AMD calls this AMD Platform Quality of Service (AMD QoS).
	479	+ More information about AMD QoS can be found in the AMD64 Technology
	480	+ Platform Quality of Service Extensions manual.
461	481
462	482	Say N if unsure.
463	483
..	..	@@ -465,13 +485,13 @@
465	485	config X86_BIGSMP
466	486	bool "Support for big SMP systems with more than 8 CPUs"
467	487	depends on SMP
468		- ---help---
469		- This option is needed for the systems that have more than 8 CPUs
	488	+ help
	489	+ This option is needed for the systems that have more than 8 CPUs.
470	490
471	491	config X86_EXTENDED_PLATFORM
472	492	bool "Support for extended (non-PC) x86 platforms"
473	493	default y
474		- ---help---
	494	+ help
475	495	If you disable this option then the kernel will only support
476	496	standard PC platforms. (which covers the vast majority of
477	497	systems out there.)
..	..	@@ -493,7 +513,7 @@
493	513	config X86_EXTENDED_PLATFORM
494	514	bool "Support for extended (non-PC) x86 platforms"
495	515	default y
496		- ---help---
	516	+ help
497	517	If you disable this option then the kernel will only support
498	518	standard PC platforms. (which covers the vast majority of
499	519	systems out there.)
..	..	@@ -517,7 +537,7 @@
517	537	depends on SMP
518	538	depends on X86_X2APIC
519	539	depends on PCI_MMCONFIG
520		- ---help---
	540	+ help
521	541	Adds support for Numascale NumaChip large-SMP systems. Needed to
522	542	enable more than ~168 cores.
523	543	If you don't have one of these, you should say N here.
..	..	@@ -529,7 +549,7 @@
529	549	depends on X86_64 && PCI
530	550	depends on X86_EXTENDED_PLATFORM
531	551	depends on SMP
532		- ---help---
	552	+ help
533	553	Support for ScaleMP vSMP systems. Say 'Y' here if this kernel is
534	554	supposed to run on these EM64T-based machines. Only choose this option
535	555	if you have one of these machines.
..	..	@@ -543,7 +563,7 @@
543	563	depends on KEXEC_CORE
544	564	depends on X86_X2APIC
545	565	depends on PCI
546		- ---help---
	566	+ help
547	567	This option is needed in order to support SGI Ultraviolet systems.
548	568	If you don't have one of these, you should say N here.
549	569
..	..	@@ -551,9 +571,9 @@
551	571	# Please maintain the alphabetic order if and when there are additions
552	572
553	573	config X86_GOLDFISH
554		- bool "Goldfish (Virtual Platform)"
555		- depends on X86_EXTENDED_PLATFORM
556		- ---help---
	574	+ bool "Goldfish (Virtual Platform)"
	575	+ depends on X86_EXTENDED_PLATFORM
	576	+ help
557	577	Enable support for the Goldfish virtual platform used primarily
558	578	for Android development. Unless you are building for the Android
559	579	Goldfish emulator say N here.
..	..	@@ -568,7 +588,7 @@
568	588	select X86_REBOOTFIXUPS
569	589	select OF
570	590	select OF_EARLY_FLATTREE
571		- ---help---
	591	+ help
572	592	Select for the Intel CE media processor (CE4100) SOC.
573	593	This option compiles in support for the CE4100 SOC for settop
574	594	boxes and media devices.
..	..	@@ -584,9 +604,9 @@
584	604	select I2C
585	605	select DW_APB_TIMER
586	606	select APB_TIMER
587		- select INTEL_SCU_IPC
	607	+ select INTEL_SCU_PCI
588	608	select MFD_INTEL_MSIC
589		- ---help---
	609	+ help
590	610	Select to build a kernel capable of supporting Intel MID (Mobile
591	611	Internet Device) platform systems which do not have the PCI legacy
592	612	interfaces. If you are building for a PC class system say N here.
..	..	@@ -606,18 +626,18 @@
606	626	select IOSF_MBI
607	627	select INTEL_IMR
608	628	select COMMON_CLK
609		- ---help---
	629	+ help
610	630	Select to include support for Quark X1000 SoC.
611	631	Say Y here if you have a Quark based system such as the Arduino
612	632	compatible Intel Galileo.
613	633
614	634	config X86_INTEL_LPSS
615	635	bool "Intel Low Power Subsystem Support"
616		- depends on X86 && ACPI
	636	+ depends on X86 && ACPI && PCI
617	637	select COMMON_CLK
618	638	select PINCTRL
619	639	select IOSF_MBI
620		- ---help---
	640	+ help
621	641	Select to build support for Intel Low Power Subsystem such as
622	642	found on Intel Lynxpoint PCH. Selecting this option enables
623	643	things like clock tree (common clock framework) and pincontrol
..	..	@@ -628,7 +648,7 @@
628	648	depends on ACPI
629	649	select COMMON_CLK
630	650	select PINCTRL
631		- ---help---
	651	+ help
632	652	Select to interpret AMD specific ACPI device to platform device
633	653	such as I2C, UART, GPIO found on AMD Carrizo and later chipsets.
634	654	I2C and UART depend on COMMON_CLK to set clock. GPIO driver is
..	..	@@ -637,7 +657,7 @@
637	657	config IOSF_MBI
638	658	tristate "Intel SoC IOSF Sideband support for SoC platforms"
639	659	depends on PCI
640		- ---help---
	660	+ help
641	661	This option enables sideband register access support for Intel SoC
642	662	platforms. On these platforms the IOSF sideband is used in lieu of
643	663	MSR's for some register accesses, mostly but not limited to thermal
..	..	@@ -654,7 +674,7 @@
654	674	config IOSF_MBI_DEBUG
655	675	bool "Enable IOSF sideband access through debugfs"
656	676	depends on IOSF_MBI && DEBUG_FS
657		- ---help---
	677	+ help
658	678	Select this option to expose the IOSF sideband access registers (MCR,
659	679	MDR, MCRX) through debugfs to write and read register information from
660	680	different units on the SoC. This is most useful for obtaining device
..	..	@@ -670,7 +690,7 @@
670	690	depends on X86_EXTENDED_PLATFORM
671	691	select M486
672	692	select X86_REBOOTFIXUPS
673		- ---help---
	693	+ help
674	694	This option is needed for RDC R-321x system-on-chip, also known
675	695	as R-8610-(G).
676	696	If you don't have one of these chips, you should say N here.
..	..	@@ -679,7 +699,7 @@
679	699	bool "Support non-standard 32-bit SMP architectures"
680	700	depends on X86_32 && SMP
681	701	depends on X86_EXTENDED_PLATFORM
682		- ---help---
	702	+ help
683	703	This option compiles in the bigsmp and STA2X11 default
684	704	subarchitectures. It is intended for a generic binary
685	705	kernel. If you select them all, kernel will probe it one by
..	..	@@ -699,14 +719,10 @@
699	719	config STA2X11
700	720	bool "STA2X11 Companion Chip Support"
701	721	depends on X86_32_NON_STANDARD && PCI
702		- select ARCH_HAS_PHYS_TO_DMA
703		- select X86_DEV_DMA_OPS
704		- select X86_DMA_REMAP
705	722	select SWIOTLB
706	723	select MFD_STA2X11
707	724	select GPIOLIB
708		- default n
709		- ---help---
	725	+ help
710	726	This adds support for boards based on the STA2X11 IO-Hub,
711	727	a.k.a. "ConneXt". The chip is used in place of the standard
712	728	PC chipset, so all "standard" peripherals are missing. If this
..	..	@@ -716,7 +732,7 @@
716	732	config X86_32_IRIS
717	733	tristate "Eurobraille/Iris poweroff module"
718	734	depends on X86_32
719		- ---help---
	735	+ help
720	736	The Iris machines from EuroBraille do not have APM or ACPI support
721	737	to shut themselves down properly. A special I/O sequence is
722	738	needed to do so, which is what this module does at
..	..	@@ -730,7 +746,7 @@
730	746	def_bool y
731	747	prompt "Single-depth WCHAN output"
732	748	depends on X86
733		- ---help---
	749	+ help
734	750	Calculate simpler /proc/<PID>/wchan values. If this option
735	751	is disabled then wchan values will recurse back to the
736	752	caller function. This provides more accurate wchan values,
..	..	@@ -740,7 +756,7 @@
740	756
741	757	menuconfig HYPERVISOR_GUEST
742	758	bool "Linux guest support"
743		- ---help---
	759	+ help
744	760	Say Y here to enable options for running Linux under various hyper-
745	761	visors. This option enables basic hypervisor detection and platform
746	762	setup.
..	..	@@ -752,23 +768,26 @@
752	768
753	769	config PARAVIRT
754	770	bool "Enable paravirtualization code"
755		- ---help---
	771	+ help
756	772	This changes the kernel so it can modify itself when it is run
757	773	under a hypervisor, potentially improving performance significantly
758	774	over full virtualization. However, when run without a hypervisor
759	775	the kernel is theoretically slower and slightly larger.
760	776
	777	+config PARAVIRT_XXL
	778	+ bool
	779	+
761	780	config PARAVIRT_DEBUG
762	781	bool "paravirt-ops debugging"
763	782	depends on PARAVIRT && DEBUG_KERNEL
764		- ---help---
	783	+ help
765	784	Enable to debug paravirt_ops internals. Specifically, BUG if
766	785	a paravirt_op is missing when it is called.
767	786
768	787	config PARAVIRT_SPINLOCKS
769	788	bool "Paravirtualization layer for spinlocks"
770	789	depends on PARAVIRT && SMP
771		- ---help---
	790	+ help
772	791	Paravirtualized spinlocks allow a pvops backend to replace the
773	792	spinlock implementation with something virtualization-friendly
774	793	(for example, block the virtual CPU rather than spinning).
..	..	@@ -778,13 +797,8 @@
778	797
779	798	If you are unsure how to answer this question, answer Y.
780	799
781		-config QUEUED_LOCK_STAT
782		- bool "Paravirt queued spinlock statistics"
783		- depends on PARAVIRT_SPINLOCKS && DEBUG_FS
784		- ---help---
785		- Enable the collection of statistical data on the slowpath
786		- behavior of paravirtualized queued spinlocks and report
787		- them on debugfs.
	800	+config X86_HV_CALLBACK_VECTOR
	801	+ def_bool n
788	802
789	803	source "arch/x86/xen/Kconfig"
790	804
..	..	@@ -792,28 +806,32 @@
792	806	bool "KVM Guest support (including kvmclock)"
793	807	depends on PARAVIRT
794	808	select PARAVIRT_CLOCK
	809	+ select ARCH_CPUIDLE_HALTPOLL
	810	+ select X86_HV_CALLBACK_VECTOR
795	811	default y
796		- ---help---
	812	+ help
797	813	This option enables various optimizations for running under the KVM
798	814	hypervisor. It includes a paravirtualized clock, so that instead
799	815	of relying on a PIT (or probably other) emulation by the
800	816	underlying device model, the host provides the guest with
801	817	timing infrastructure such as time of day, and system time
802	818
803		-config KVM_DEBUG_FS
804		- bool "Enable debug information for KVM Guests in debugfs"
805		- depends on KVM_GUEST && DEBUG_FS
806		- default n
807		- ---help---
808		- This option enables collection of various statistics for KVM guest.
809		- Statistics are displayed in debugfs filesystem. Enabling this option
810		- may incur significant overhead.
	819	+config ARCH_CPUIDLE_HALTPOLL
	820	+ def_bool n
	821	+ prompt "Disable host haltpoll when loading haltpoll driver"
	822	+ help
	823	+ If virtualized under KVM, disable host haltpoll.
	824	+
	825	+config PVH
	826	+ bool "Support for running PVH guests"
	827	+ help
	828	+ This option enables the PVH entry point for guest virtual machines
	829	+ as specified in the x86/HVM direct boot ABI.
811	830
812	831	config PARAVIRT_TIME_ACCOUNTING
813	832	bool "Paravirtual steal time accounting"
814	833	depends on PARAVIRT
815		- default n
816		- ---help---
	834	+ help
817	835	Select this option to enable fine granularity task steal time
818	836	accounting. Time spent executing other tasks in parallel with
819	837	the current vCPU is discounted from the vCPU power. To account for
..	..	@@ -828,22 +846,30 @@
828	846	bool "Jailhouse non-root cell support"
829	847	depends on X86_64 && PCI
830	848	select X86_PM_TIMER
831		- ---help---
	849	+ help
832	850	This option allows to run Linux as guest in a Jailhouse non-root
833	851	cell. You can leave this option disabled if you only want to start
834	852	Jailhouse and run Linux afterwards in the root cell.
835	853
836		-endif #HYPERVISOR_GUEST
	854	+config ACRN_GUEST
	855	+ bool "ACRN Guest support"
	856	+ depends on X86_64
	857	+ select X86_HV_CALLBACK_VECTOR
	858	+ help
	859	+ This option allows to run Linux as guest in the ACRN hypervisor. ACRN is
	860	+ a flexible, lightweight reference open-source hypervisor, built with
	861	+ real-time and safety-criticality in mind. It is built for embedded
	862	+ IOT with small footprint and real-time features. More details can be
	863	+ found in https://projectacrn.org/.
837	864
838		-config NO_BOOTMEM
839		- def_bool y
	865	+endif #HYPERVISOR_GUEST
840	866
841	867	source "arch/x86/Kconfig.cpu"
842	868
843	869	config HPET_TIMER
844	870	def_bool X86_64
845	871	prompt "HPET Timer Support" if X86_32
846		- ---help---
	872	+ help
847	873	Use the IA-PC HPET (High Precision Event Timer) to manage
848	874	time in preference to the PIT and RTC, if a HPET is
849	875	present.
..	..	@@ -864,16 +890,16 @@
864	890	depends on HPET_TIMER && (RTC=y \|\| RTC=m \|\| RTC_DRV_CMOS=m \|\| RTC_DRV_CMOS=y)
865	891
866	892	config APB_TIMER
867		- def_bool y if X86_INTEL_MID
868		- prompt "Intel MID APB Timer Support" if X86_INTEL_MID
869		- select DW_APB_TIMER
870		- depends on X86_INTEL_MID && SFI
871		- help
872		- APB timer is the replacement for 8254, HPET on X86 MID platforms.
873		- The APBT provides a stable time base on SMP
874		- systems, unlike the TSC, but it is more expensive to access,
875		- as it is off-chip. APB timers are always running regardless of CPU
876		- C states, they are used as per CPU clockevent device when possible.
	893	+ def_bool y if X86_INTEL_MID
	894	+ prompt "Intel MID APB Timer Support" if X86_INTEL_MID
	895	+ select DW_APB_TIMER
	896	+ depends on X86_INTEL_MID && SFI
	897	+ help
	898	+ APB timer is the replacement for 8254, HPET on X86 MID platforms.
	899	+ The APBT provides a stable time base on SMP
	900	+ systems, unlike the TSC, but it is more expensive to access,
	901	+ as it is off-chip. APB timers are always running regardless of CPU
	902	+ C states, they are used as per CPU clockevent device when possible.
877	903
878	904	# Mark as expert because too many people got it wrong.
879	905	# The code disables itself when not needed.
..	..	@@ -881,7 +907,7 @@
881	907	default y
882	908	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
883	909	bool "Enable DMI scanning" if EXPERT
884		- ---help---
	910	+ help
885	911	Enabled scanning of DMI to identify machine quirks. Say Y
886	912	here unless you have verified that your setup is not
887	913	affected by entries in the DMI blacklist. Required by PNP
..	..	@@ -889,10 +915,11 @@
889	915
890	916	config GART_IOMMU
891	917	bool "Old AMD GART IOMMU support"
	918	+ select DMA_OPS
892	919	select IOMMU_HELPER
893	920	select SWIOTLB
894	921	depends on X86_64 && PCI && AMD_NB
895		- ---help---
	922	+ help
896	923	Provides a driver for older AMD Athlon64/Opteron/Turion/Sempron
897	924	GART based hardware IOMMUs.
898	925
..	..	@@ -909,41 +936,11 @@
909	936
910	937	If unsure, say Y.
911	938
912		-config CALGARY_IOMMU
913		- bool "IBM Calgary IOMMU support"
914		- select IOMMU_HELPER
915		- select SWIOTLB
916		- depends on X86_64 && PCI
917		- ---help---
918		- Support for hardware IOMMUs in IBM's xSeries x366 and x460
919		- systems. Needed to run systems with more than 3GB of memory
920		- properly with 32-bit PCI devices that do not support DAC
921		- (Double Address Cycle). Calgary also supports bus level
922		- isolation, where all DMAs pass through the IOMMU. This
923		- prevents them from going anywhere except their intended
924		- destination. This catches hard-to-find kernel bugs and
925		- mis-behaving drivers and devices that do not use the DMA-API
926		- properly to set up their DMA buffers. The IOMMU can be
927		- turned off at boot time with the iommu=off parameter.
928		- Normally the kernel will make the right choice by itself.
929		- If unsure, say Y.
930		-
931		-config CALGARY_IOMMU_ENABLED_BY_DEFAULT
932		- def_bool y
933		- prompt "Should Calgary be enabled by default?"
934		- depends on CALGARY_IOMMU
935		- ---help---
936		- Should Calgary be enabled by default? if you choose 'y', Calgary
937		- will be used (if it exists). If you choose 'n', Calgary will not be
938		- used even if it exists. If you choose 'n' and would like to use
939		- Calgary anyway, pass 'iommu=calgary' on the kernel command line.
940		- If unsure, say Y.
941		-
942	939	config MAXSMP
943	940	bool "Enable Maximum number of SMP Processors and NUMA Nodes"
944	941	depends on X86_64 && SMP && DEBUG_KERNEL
945		- select CPUMASK_OFFSTACK if !PREEMPT_RT_FULL
946		- ---help---
	942	+ select CPUMASK_OFFSTACK
	943	+ help
947	944	Enable maximum number of CPUS and NUMA Nodes for this architecture.
948	945	If unsure, say N.
949	946
..	..	@@ -977,8 +974,8 @@
977	974	config NR_CPUS_RANGE_END
978	975	int
979	976	depends on X86_64
980		- default 8192 if SMP && ( MAXSMP \|\| CPUMASK_OFFSTACK)
981		- default 512 if SMP && (!MAXSMP && !CPUMASK_OFFSTACK)
	977	+ default 8192 if SMP && CPUMASK_OFFSTACK
	978	+ default 512 if SMP && !CPUMASK_OFFSTACK
982	979	default 1 if !SMP
983	980
984	981	config NR_CPUS_DEFAULT
..	..	@@ -999,7 +996,7 @@
999	996	int "Maximum number of CPUs" if SMP && !MAXSMP
1000	997	range NR_CPUS_RANGE_BEGIN NR_CPUS_RANGE_END
1001	998	default NR_CPUS_DEFAULT
1002		- ---help---
	999	+ help
1003	1000	This allows you to specify the maximum number of CPUs which this
1004	1001	kernel will support. If CPUMASK_OFFSTACK is enabled, the maximum
1005	1002	supported value is 8192, otherwise the maximum value is 512. The
..	..	@@ -1015,7 +1012,7 @@
1015	1012	def_bool y
1016	1013	prompt "Multi-core scheduler support"
1017	1014	depends on SMP
1018		- ---help---
	1015	+ help
1019	1016	Multi-core scheduler support improves the CPU scheduler's decision
1020	1017	making when dealing with multi-core CPU chips at a cost of slightly
1021	1018	increased overhead in some places. If unsure say N here.
..	..	@@ -1026,7 +1023,7 @@
1026	1023	select X86_INTEL_PSTATE
1027	1024	select CPU_FREQ
1028	1025	default y
1029		- ---help---
	1026	+ help
1030	1027	Intel Turbo Boost Max Technology 3.0 enabled CPUs have a
1031	1028	core ordering determined at manufacturing time, which allows
1032	1029	certain cores to reach higher turbo frequencies (when running
..	..	@@ -1042,14 +1039,14 @@
1042	1039	If unsure say Y here.
1043	1040
1044	1041	config UP_LATE_INIT
1045		- def_bool y
1046		- depends on !SMP && X86_LOCAL_APIC
	1042	+ def_bool y
	1043	+ depends on !SMP && X86_LOCAL_APIC
1047	1044
1048	1045	config X86_UP_APIC
1049	1046	bool "Local APIC support on uniprocessors" if !PCI_MSI
1050	1047	default PCI_MSI
1051	1048	depends on X86_32 && !SMP && !X86_32_NON_STANDARD
1052		- ---help---
	1049	+ help
1053	1050	A local APIC (Advanced Programmable Interrupt Controller) is an
1054	1051	integrated interrupt controller in the CPU. If you have a single-CPU
1055	1052	system which has a processor with a local APIC, you can say Y here to
..	..	@@ -1062,7 +1059,7 @@
1062	1059	config X86_UP_IOAPIC
1063	1060	bool "IO-APIC support on uniprocessors"
1064	1061	depends on X86_UP_APIC
1065		- ---help---
	1062	+ help
1066	1063	An IO-APIC (I/O Advanced Programmable Interrupt Controller) is an
1067	1064	SMP-capable replacement for PC-style interrupt controllers. Most
1068	1065	SMP systems and many recent uniprocessor systems have one.
..	..	@@ -1084,7 +1081,7 @@
1084	1081	config X86_REROUTE_FOR_BROKEN_BOOT_IRQS
1085	1082	bool "Reroute for broken boot IRQs"
1086	1083	depends on X86_IO_APIC
1087		- ---help---
	1084	+ help
1088	1085	This option enables a workaround that fixes a source of
1089	1086	spurious interrupts. This is recommended when threaded
1090	1087	interrupt handling is used on systems where the generation of
..	..	@@ -1108,7 +1105,7 @@
1108	1105	bool "Machine Check / overheating reporting"
1109	1106	select GENERIC_ALLOCATOR
1110	1107	default y
1111		- ---help---
	1108	+ help
1112	1109	Machine Check support allows the processor to notify the
1113	1110	kernel if it detects a problem (e.g. overheating, data corruption).
1114	1111	The action the kernel takes depends on the severity of the problem,
..	..	@@ -1117,7 +1114,7 @@
1117	1114	config X86_MCELOG_LEGACY
1118	1115	bool "Support for deprecated /dev/mcelog character device"
1119	1116	depends on X86_MCE
1120		- ---help---
	1117	+ help
1121	1118	Enable support for /dev/mcelog which is needed by the old mcelog
1122	1119	userspace logging daemon. Consider switching to the new generation
1123	1120	rasdaemon solution.
..	..	@@ -1126,7 +1123,7 @@
1126	1123	def_bool y
1127	1124	prompt "Intel MCE features"
1128	1125	depends on X86_MCE && X86_LOCAL_APIC
1129		- ---help---
	1126	+ help
1130	1127	Additional support for intel specific MCE features such as
1131	1128	the thermal monitor.
1132	1129
..	..	@@ -1134,14 +1131,14 @@
1134	1131	def_bool y
1135	1132	prompt "AMD MCE features"
1136	1133	depends on X86_MCE && X86_LOCAL_APIC && AMD_NB
1137		- ---help---
	1134	+ help
1138	1135	Additional support for AMD specific MCE features such as
1139	1136	the DRAM Error Threshold.
1140	1137
1141	1138	config X86_ANCIENT_MCE
1142	1139	bool "Support for old Pentium 5 / WinChip machine checks"
1143	1140	depends on X86_32 && X86_MCE
1144		- ---help---
	1141	+ help
1145	1142	Include support for machine check handling on old Pentium 5 or WinChip
1146	1143	systems. These typically need to be enabled explicitly on the command
1147	1144	line.
..	..	@@ -1153,7 +1150,7 @@
1153	1150	config X86_MCE_INJECT
1154	1151	depends on X86_MCE && X86_LOCAL_APIC && DEBUG_FS
1155	1152	tristate "Machine check injector support"
1156		- ---help---
	1153	+ help
1157	1154	Provide support for injecting machine checks for testing purposes.
1158	1155	If you don't know what a machine check is and you don't do kernel
1159	1156	QA it is safe to say n.
..	..	@@ -1166,9 +1163,8 @@
1166	1163
1167	1164	config X86_LEGACY_VM86
1168	1165	bool "Legacy VM86 support"
1169		- default n
1170	1166	depends on X86_32
1171		- ---help---
	1167	+ help
1172	1168	This option allows user programs to put the CPU into V8086
1173	1169	mode, which is an 80286-era approximation of 16-bit real mode.
1174	1170
..	..	@@ -1193,14 +1189,14 @@
1193	1189	If unsure, say N here.
1194	1190
1195	1191	config VM86
1196		- bool
1197		- default X86_LEGACY_VM86
	1192	+ bool
	1193	+ default X86_LEGACY_VM86
1198	1194
1199	1195	config X86_16BIT
1200	1196	bool "Enable support for 16-bit segments" if EXPERT
1201	1197	default y
1202	1198	depends on MODIFY_LDT_SYSCALL
1203		- ---help---
	1199	+ help
1204	1200	This option is required by programs like Wine to run 16-bit
1205	1201	protected mode legacy code on x86 processors. Disabling
1206	1202	this option saves about 300 bytes on i386, or around 6K text
..	..	@@ -1215,10 +1211,10 @@
1215	1211	depends on X86_16BIT && X86_64
1216	1212
1217	1213	config X86_VSYSCALL_EMULATION
1218		- bool "Enable vsyscall emulation" if EXPERT
1219		- default y
1220		- depends on X86_64
1221		- ---help---
	1214	+ bool "Enable vsyscall emulation" if EXPERT
	1215	+ default y
	1216	+ depends on X86_64
	1217	+ help
1222	1218	This enables emulation of the legacy vsyscall page. Disabling
1223	1219	it is roughly equivalent to booting with vsyscall=none, except
1224	1220	that it will also disable the helpful warning if a program
..	..	@@ -1232,10 +1228,28 @@
1232	1228	Disabling this option saves about 7K of kernel size and
1233	1229	possibly 4K of additional runtime pagetable memory.
1234	1230
	1231	+config X86_IOPL_IOPERM
	1232	+ bool "IOPERM and IOPL Emulation"
	1233	+ default y
	1234	+ help
	1235	+ This enables the ioperm() and iopl() syscalls which are necessary
	1236	+ for legacy applications.
	1237	+
	1238	+ Legacy IOPL support is an overbroad mechanism which allows user
	1239	+ space aside of accessing all 65536 I/O ports also to disable
	1240	+ interrupts. To gain this access the caller needs CAP_SYS_RAWIO
	1241	+ capabilities and permission from potentially active security
	1242	+ modules.
	1243	+
	1244	+ The emulation restricts the functionality of the syscall to
	1245	+ only allowing the full range I/O port access, but prevents the
	1246	+ ability to disable interrupts from user space which would be
	1247	+ granted if the hardware IOPL mechanism would be used.
	1248	+
1235	1249	config TOSHIBA
1236	1250	tristate "Toshiba Laptop support"
1237	1251	depends on X86_32
1238		- ---help---
	1252	+ help
1239	1253	This adds a driver to safely access the System Management Mode of
1240	1254	the CPU on Toshiba portables with a genuine Toshiba BIOS. It does
1241	1255	not work on models with a Phoenix BIOS. The System Management Mode
..	..	@@ -1250,9 +1264,10 @@
1250	1264
1251	1265	config I8K
1252	1266	tristate "Dell i8k legacy laptop support"
1253		- select HWMON
	1267	+ depends on HWMON
	1268	+ depends on PROC_FS
1254	1269	select SENSORS_DELL_SMM
1255		- ---help---
	1270	+ help
1256	1271	This option enables legacy /proc/i8k userspace interface in hwmon
1257	1272	dell-smm-hwmon driver. Character file /proc/i8k reports bios version,
1258	1273	temperature and allows controlling fan speeds of Dell laptops via
..	..	@@ -1267,7 +1282,7 @@
1267	1282	config X86_REBOOTFIXUPS
1268	1283	bool "Enable X86 board specific fixups for reboot"
1269	1284	depends on X86_32
1270		- ---help---
	1285	+ help
1271	1286	This enables chipset and/or board specific fixups to be done
1272	1287	in order to get reboot to work correctly. This is only needed on
1273	1288	some combinations of hardware and BIOS. The symptom, for which
..	..	@@ -1285,8 +1300,7 @@
1285	1300	bool "CPU microcode loading support"
1286	1301	default y
1287	1302	depends on CPU_SUP_AMD \|\| CPU_SUP_INTEL
1288		- select FW_LOADER
1289		- ---help---
	1303	+ help
1290	1304	If you say Y here, you will be able to update the microcode on
1291	1305	Intel and AMD processors. The Intel support is for the IA32 family,
1292	1306	e.g. Pentium Pro, Pentium II, Pentium III, Pentium 4, Xeon etc. The
..	..	@@ -1295,7 +1309,7 @@
1295	1309	the Linux kernel.
1296	1310
1297	1311	The preferred method to load microcode from a detached initrd is described
1298		- in Documentation/x86/microcode.txt. For that you need to enable
	1312	+ in Documentation/x86/microcode.rst. For that you need to enable
1299	1313	CONFIG_BLK_DEV_INITRD in order for the loader to be able to scan the
1300	1314	initrd for microcode blobs.
1301	1315
..	..	@@ -1305,10 +1319,9 @@
1305	1319
1306	1320	config MICROCODE_INTEL
1307	1321	bool "Intel microcode loading support"
1308		- depends on MICROCODE
	1322	+ depends on CPU_SUP_INTEL && MICROCODE
1309	1323	default MICROCODE
1310		- select FW_LOADER
1311		- ---help---
	1324	+ help
1312	1325	This options enables microcode patch loading support for Intel
1313	1326	processors.
1314	1327
..	..	@@ -1318,19 +1331,26 @@
1318	1331
1319	1332	config MICROCODE_AMD
1320	1333	bool "AMD microcode loading support"
1321		- depends on MICROCODE
1322		- select FW_LOADER
1323		- ---help---
	1334	+ depends on CPU_SUP_AMD && MICROCODE
	1335	+ help
1324	1336	If you select this option, microcode patch loading support for AMD
1325	1337	processors will be enabled.
1326	1338
1327	1339	config MICROCODE_OLD_INTERFACE
1328		- def_bool y
	1340	+ bool "Ancient loading interface (DEPRECATED)"
	1341	+ default n
1329	1342	depends on MICROCODE
	1343	+ help
	1344	+ DO NOT USE THIS! This is the ancient /dev/cpu/microcode interface
	1345	+ which was used by userspace tools like iucode_tool and microcode.ctl.
	1346	+ It is inadequate because it runs too late to be able to properly
	1347	+ load microcode on a machine and it needs special tools. Instead, you
	1348	+ should've switched to the early loading method with the initrd or
	1349	+ builtin microcode by now: Documentation/x86/microcode.rst
1330	1350
1331	1351	config X86_MSR
1332	1352	tristate "/dev/cpu/*/msr - Model-specific register support"
1333		- ---help---
	1353	+ help
1334	1354	This device gives privileged processes access to the x86
1335	1355	Model-Specific Registers (MSRs). It is a character device with
1336	1356	major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
..	..	@@ -1339,7 +1359,7 @@
1339	1359
1340	1360	config X86_CPUID
1341	1361	tristate "/dev/cpu/*/cpuid - CPU information support"
1342		- ---help---
	1362	+ help
1343	1363	This device gives processes access to the x86 CPUID instruction to
1344	1364	be executed on a specific processor. It is a character device
1345	1365	with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
..	..	@@ -1352,7 +1372,7 @@
1352	1372
1353	1373	config NOHIGHMEM
1354	1374	bool "off"
1355		- ---help---
	1375	+ help
1356	1376	Linux can use up to 64 Gigabytes of physical memory on x86 systems.
1357	1377	However, the address space of 32-bit x86 processors is only 4
1358	1378	Gigabytes large. That means that, if you have a large amount of
..	..	@@ -1388,15 +1408,15 @@
1388	1408
1389	1409	config HIGHMEM4G
1390	1410	bool "4GB"
1391		- ---help---
	1411	+ help
1392	1412	Select this if you have a 32-bit processor and between 1 and 4
1393	1413	gigabytes of physical RAM.
1394	1414
1395	1415	config HIGHMEM64G
1396	1416	bool "64GB"
1397		- depends on !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !MWINCHIP3D && !MK6
	1417	+ depends on !M486SX && !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !MWINCHIP3D && !MK6
1398	1418	select X86_PAE
1399		- ---help---
	1419	+ help
1400	1420	Select this if you have a 32-bit processor and more than 4
1401	1421	gigabytes of physical RAM.
1402	1422
..	..	@@ -1406,7 +1426,7 @@
1406	1426	prompt "Memory split" if EXPERT
1407	1427	default VMSPLIT_3G
1408	1428	depends on X86_32
1409		- ---help---
	1429	+ help
1410	1430	Select the desired split between kernel and user memory.
1411	1431
1412	1432	If the address range available to the kernel is less than the
..	..	@@ -1454,7 +1474,7 @@
1454	1474	depends on X86_32 && !HIGHMEM4G
1455	1475	select PHYS_ADDR_T_64BIT
1456	1476	select SWIOTLB
1457		- ---help---
	1477	+ help
1458	1478	PAE is required for NX support, and furthermore enables
1459	1479	larger swapspace support for non-overcommit purposes. It
1460	1480	has the cost of more pagetable lookup overhead, and also
..	..	@@ -1462,10 +1482,11 @@
1462	1482
1463	1483	config X86_5LEVEL
1464	1484	bool "Enable 5-level page tables support"
	1485	+ default y
1465	1486	select DYNAMIC_MEMORY_LAYOUT
1466	1487	select SPARSEMEM_VMEMMAP
1467	1488	depends on X86_64
1468		- ---help---
	1489	+ help
1469	1490	5-level paging enables access to larger address space:
1470	1491	upto 128 PiB of virtual address space and 4 PiB of
1471	1492	physical address space.
..	..	@@ -1475,29 +1496,38 @@
1475	1496	A kernel with the option enabled can be booted on machines that
1476	1497	support 4- or 5-level paging.
1477	1498
1478		- See Documentation/x86/x86_64/5level-paging.txt for more
	1499	+ See Documentation/x86/x86_64/5level-paging.rst for more
1479	1500	information.
1480	1501
1481	1502	Say N if unsure.
1482	1503
1483	1504	config X86_DIRECT_GBPAGES
1484	1505	def_bool y
1485		- depends on X86_64 && !DEBUG_PAGEALLOC
1486		- ---help---
	1506	+ depends on X86_64
	1507	+ help
1487	1508	Certain kernel features effectively disable kernel
1488	1509	linear 1 GB mappings (even if the CPU otherwise
1489	1510	supports them), so don't confuse the user by printing
1490	1511	that we have them enabled.
1491	1512
1492		-config ARCH_HAS_MEM_ENCRYPT
1493		- def_bool y
	1513	+config X86_CPA_STATISTICS
	1514	+ bool "Enable statistic for Change Page Attribute"
	1515	+ depends on DEBUG_FS
	1516	+ help
	1517	+ Expose statistics about the Change Page Attribute mechanism, which
	1518	+ helps to determine the effectiveness of preserving large and huge
	1519	+ page mappings when mapping protections are changed.
1494	1520
1495	1521	config AMD_MEM_ENCRYPT
1496	1522	bool "AMD Secure Memory Encryption (SME) support"
1497	1523	depends on X86_64 && CPU_SUP_AMD
	1524	+ select DMA_COHERENT_POOL
1498	1525	select DYNAMIC_PHYSICAL_MASK
1499	1526	select ARCH_USE_MEMREMAP_PROT
1500		- ---help---
	1527	+ select ARCH_HAS_FORCE_DMA_UNENCRYPTED
	1528	+ select INSTRUCTION_DECODER
	1529	+ select ARCH_HAS_CC_PLATFORM
	1530	+ help
1501	1531	Say yes to enable support for the encryption of system memory.
1502	1532	This requires an AMD processor that supports Secure Memory
1503	1533	Encryption (SME).
..	..	@@ -1505,7 +1535,7 @@
1505	1535	config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT
1506	1536	bool "Activate AMD Secure Memory Encryption (SME) by default"
1507	1537	depends on AMD_MEM_ENCRYPT
1508		- ---help---
	1538	+ help
1509	1539	Say yes to have system memory encrypted by default if running on
1510	1540	an AMD processor that supports Secure Memory Encryption (SME).
1511	1541
..	..	@@ -1517,12 +1547,12 @@
1517	1547
1518	1548	# Common NUMA Features
1519	1549	config NUMA
1520		- bool "Numa Memory Allocation and Scheduler Support"
	1550	+ bool "NUMA Memory Allocation and Scheduler Support"
1521	1551	depends on SMP
1522	1552	depends on X86_64 \|\| (X86_32 && HIGHMEM64G && X86_BIGSMP)
1523	1553	default y if X86_BIGSMP
1524		- ---help---
1525		- Enable NUMA (Non Uniform Memory Access) support.
	1554	+ help
	1555	+ Enable NUMA (Non-Uniform Memory Access) support.
1526	1556
1527	1557	The kernel will try to allocate memory used by a CPU on the
1528	1558	local memory controller of the CPU and add some more
..	..	@@ -1540,7 +1570,7 @@
1540	1570	def_bool y
1541	1571	prompt "Old style AMD Opteron NUMA detection"
1542	1572	depends on X86_64 && NUMA && PCI
1543		- ---help---
	1573	+ help
1544	1574	Enable AMD NUMA node topology detection. You should say Y here if
1545	1575	you have a multi processor AMD system. This uses an old method to
1546	1576	read the NUMA configuration directly from the builtin Northbridge
..	..	@@ -1552,22 +1582,13 @@
1552	1582	prompt "ACPI NUMA detection"
1553	1583	depends on X86_64 && NUMA && ACPI && PCI
1554	1584	select ACPI_NUMA
1555		- ---help---
	1585	+ help
1556	1586	Enable ACPI SRAT based node topology detection.
1557		-
1558		-# Some NUMA nodes have memory ranges that span
1559		-# other nodes. Even though a pfn is valid and
1560		-# between a node's start and end pfns, it may not
1561		-# reside on that node. See memmap_init_zone()
1562		-# for details.
1563		-config NODES_SPAN_OTHER_NODES
1564		- def_bool y
1565		- depends on X86_64_ACPI_NUMA
1566	1587
1567	1588	config NUMA_EMU
1568	1589	bool "NUMA emulation"
1569	1590	depends on NUMA
1570		- ---help---
	1591	+ help
1571	1592	Enable NUMA emulation. A flat machine will be split
1572	1593	into virtual nodes when booted with "numa=fake=N", where N is the
1573	1594	number of nodes. This is only useful for debugging.
..	..	@@ -1579,25 +1600,13 @@
1579	1600	default "6" if X86_64
1580	1601	default "3"
1581	1602	depends on NEED_MULTIPLE_NODES
1582		- ---help---
	1603	+ help
1583	1604	Specify the maximum number of NUMA Nodes available on the target
1584	1605	system. Increases memory reserved to accommodate various tables.
1585		-
1586		-config ARCH_HAVE_MEMORY_PRESENT
1587		- def_bool y
1588		- depends on X86_32 && DISCONTIGMEM
1589	1606
1590	1607	config ARCH_FLATMEM_ENABLE
1591	1608	def_bool y
1592	1609	depends on X86_32 && !NUMA
1593		-
1594		-config ARCH_DISCONTIGMEM_ENABLE
1595		- def_bool y
1596		- depends on NUMA && X86_32
1597		-
1598		-config ARCH_DISCONTIGMEM_DEFAULT
1599		- def_bool y
1600		- depends on NUMA && X86_32
1601	1610
1602	1611	config ARCH_SPARSEMEM_ENABLE
1603	1612	def_bool y
..	..	@@ -1606,8 +1615,7 @@
1606	1615	select SPARSEMEM_VMEMMAP_ENABLE if X86_64
1607	1616
1608	1617	config ARCH_SPARSEMEM_DEFAULT
1609		- def_bool y
1610		- depends on X86_64
	1618	+ def_bool X86_64 \|\| (NUMA && X86_32)
1611	1619
1612	1620	config ARCH_SELECT_MEMORY_MODEL
1613	1621	def_bool y
..	..	@@ -1618,7 +1626,7 @@
1618	1626	depends on X86_64 && MEMORY_HOTPLUG
1619	1627	help
1620	1628	This option enables a sysfs memory/probe interface for testing.
1621		- See Documentation/memory-hotplug.txt for more information.
	1629	+ See Documentation/admin-guide/mm/memory-hotplug.rst for more information.
1622	1630	If you are unsure how to answer this question, answer N.
1623	1631
1624	1632	config ARCH_PROC_KCORE_TEXT
..	..	@@ -1626,9 +1634,9 @@
1626	1634	depends on X86_64 && PROC_KCORE
1627	1635
1628	1636	config ILLEGAL_POINTER_VALUE
1629		- hex
1630		- default 0 if X86_32
1631		- default 0xdead000000000000 if X86_64
	1637	+ hex
	1638	+ default 0 if X86_32
	1639	+ default 0xdead000000000000 if X86_64
1632	1640
1633	1641	config X86_PMEM_LEGACY_DEVICE
1634	1642	bool
..	..	@@ -1638,6 +1646,7 @@
1638	1646	depends on PHYS_ADDR_T_64BIT
1639	1647	depends on BLK_DEV
1640	1648	select X86_PMEM_LEGACY_DEVICE
	1649	+ select NUMA_KEEP_MEMINFO if NUMA
1641	1650	select LIBNVDIMM
1642	1651	help
1643	1652	Treat memory marked using the non-standard e820 type of 12 as used
..	..	@@ -1650,7 +1659,7 @@
1650	1659	config HIGHPTE
1651	1660	bool "Allocate 3rd-level pagetables from highmem"
1652	1661	depends on HIGHMEM
1653		- ---help---
	1662	+ help
1654	1663	The VM uses one page table entry for each page of physical memory.
1655	1664	For systems with a lot of RAM, this can be wasteful of precious
1656	1665	low memory. Setting this option will put user-space page table
..	..	@@ -1658,7 +1667,7 @@
1658	1667
1659	1668	config X86_CHECK_BIOS_CORRUPTION
1660	1669	bool "Check for low memory corruption"
1661		- ---help---
	1670	+ help
1662	1671	Periodically check for memory corruption in low memory, which
1663	1672	is suspected to be caused by BIOS. Even when enabled in the
1664	1673	configuration, it is disabled at runtime. Enable it by
..	..	@@ -1682,7 +1691,7 @@
1682	1691	bool "Set the default setting of memory_corruption_check"
1683	1692	depends on X86_CHECK_BIOS_CORRUPTION
1684	1693	default y
1685		- ---help---
	1694	+ help
1686	1695	Set whether the default state of memory_corruption_check is
1687	1696	on or off.
1688	1697
..	..	@@ -1690,7 +1699,7 @@
1690	1699	int "Amount of low memory, in kilobytes, to reserve for the BIOS"
1691	1700	default 64
1692	1701	range 4 640
1693		- ---help---
	1702	+ help
1694	1703	Specify the amount of low memory to reserve for the BIOS.
1695	1704
1696	1705	The first page contains BIOS data structures that the kernel
..	..	@@ -1718,8 +1727,8 @@
1718	1727	config MATH_EMULATION
1719	1728	bool
1720	1729	depends on MODIFY_LDT_SYSCALL
1721		- prompt "Math emulation" if X86_32
1722		- ---help---
	1730	+ prompt "Math emulation" if X86_32 && (M486SX \|\| MELAN)
	1731	+ help
1723	1732	Linux can emulate a math coprocessor (used for floating point
1724	1733	operations) if you don't have one. 486DX and Pentium processors have
1725	1734	a math coprocessor built in, 486SX and 386 do not, unless you added
..	..	@@ -1745,7 +1754,7 @@
1745	1754	config MTRR
1746	1755	def_bool y
1747	1756	prompt "MTRR (Memory Type Range Register) support" if EXPERT
1748		- ---help---
	1757	+ help
1749	1758	On Intel P6 family processors (Pentium Pro, Pentium II and later)
1750	1759	the Memory Type Range Registers (MTRRs) may be used to control
1751	1760	processor access to memory ranges. This is most useful if you have
..	..	@@ -1775,13 +1784,13 @@
1775	1784	You can safely say Y even if your machine doesn't have MTRRs, you'll
1776	1785	just add about 9 KB to your kernel.
1777	1786
1778		- See <file:Documentation/x86/mtrr.txt> for more information.
	1787	+ See <file:Documentation/x86/mtrr.rst> for more information.
1779	1788
1780	1789	config MTRR_SANITIZER
1781	1790	def_bool y
1782	1791	prompt "MTRR cleanup support"
1783	1792	depends on MTRR
1784		- ---help---
	1793	+ help
1785	1794	Convert MTRR layout from continuous to discrete, so X drivers can
1786	1795	add writeback entries.
1787	1796
..	..	@@ -1796,7 +1805,7 @@
1796	1805	range 0 1
1797	1806	default "0"
1798	1807	depends on MTRR_SANITIZER
1799		- ---help---
	1808	+ help
1800	1809	Enable mtrr cleanup default value
1801	1810
1802	1811	config MTRR_SANITIZER_SPARE_REG_NR_DEFAULT
..	..	@@ -1804,7 +1813,7 @@
1804	1813	range 0 7
1805	1814	default "1"
1806	1815	depends on MTRR_SANITIZER
1807		- ---help---
	1816	+ help
1808	1817	mtrr cleanup spare entries default, it can be changed via
1809	1818	mtrr_spare_reg_nr=N on the kernel command line.
1810	1819
..	..	@@ -1812,7 +1821,7 @@
1812	1821	def_bool y
1813	1822	prompt "x86 PAT support" if EXPERT
1814	1823	depends on MTRR
1815		- ---help---
	1824	+ help
1816	1825	Use PAT attributes to setup page level cache control.
1817	1826
1818	1827	PATs are the modern equivalents of MTRRs and are much more
..	..	@@ -1830,7 +1839,7 @@
1830	1839	config ARCH_RANDOM
1831	1840	def_bool y
1832	1841	prompt "x86 architectural random number generator" if EXPERT
1833		- ---help---
	1842	+ help
1834	1843	Enable the x86 architectural RDRAND instruction
1835	1844	(Intel Bull Mountain technology) to generate random numbers.
1836	1845	If supported, this is a high bandwidth, cryptographically
..	..	@@ -1839,7 +1848,7 @@
1839	1848	config X86_SMAP
1840	1849	def_bool y
1841	1850	prompt "Supervisor Mode Access Prevention" if EXPERT
1842		- ---help---
	1851	+ help
1843	1852	Supervisor Mode Access Prevention (SMAP) is a security
1844	1853	feature in newer Intel processors. There is a small
1845	1854	performance cost if this enabled and turned on; there is
..	..	@@ -1847,63 +1856,34 @@
1847	1856
1848	1857	If unsure, say Y.
1849	1858
1850		-config X86_INTEL_UMIP
	1859	+config X86_UMIP
1851	1860	def_bool y
1852		- depends on CPU_SUP_INTEL
1853		- prompt "Intel User Mode Instruction Prevention" if EXPERT
1854		- ---help---
1855		- The User Mode Instruction Prevention (UMIP) is a security
1856		- feature in newer Intel processors. If enabled, a general
1857		- protection fault is issued if the SGDT, SLDT, SIDT, SMSW
1858		- or STR instructions are executed in user mode. These instructions
1859		- unnecessarily expose information about the hardware state.
	1861	+ prompt "User Mode Instruction Prevention" if EXPERT
	1862	+ help
	1863	+ User Mode Instruction Prevention (UMIP) is a security feature in
	1864	+ some x86 processors. If enabled, a general protection fault is
	1865	+ issued if the SGDT, SLDT, SIDT, SMSW or STR instructions are
	1866	+ executed in user mode. These instructions unnecessarily expose
	1867	+ information about the hardware state.
1860	1868
1861	1869	The vast majority of applications do not use these instructions.
1862	1870	For the very few that do, software emulation is provided in
1863	1871	specific cases in protected and virtual-8086 modes. Emulated
1864	1872	results are dummy.
1865	1873
1866		-config X86_INTEL_MPX
1867		- prompt "Intel MPX (Memory Protection Extensions)"
1868		- def_bool n
1869		- # Note: only available in 64-bit mode due to VMA flags shortage
1870		- depends on CPU_SUP_INTEL && X86_64
1871		- select ARCH_USES_HIGH_VMA_FLAGS
1872		- ---help---
1873		- MPX provides hardware features that can be used in
1874		- conjunction with compiler-instrumented code to check
1875		- memory references. It is designed to detect buffer
1876		- overflow or underflow bugs.
1877		-
1878		- This option enables running applications which are
1879		- instrumented or otherwise use MPX. It does not use MPX
1880		- itself inside the kernel or to protect the kernel
1881		- against bad memory references.
1882		-
1883		- Enabling this option will make the kernel larger:
1884		- ~8k of kernel text and 36 bytes of data on a 64-bit
1885		- defconfig. It adds a long to the 'mm_struct' which
1886		- will increase the kernel memory overhead of each
1887		- process and adds some branches to paths used during
1888		- exec() and munmap().
1889		-
1890		- For details, see Documentation/x86/intel_mpx.txt
1891		-
1892		- If unsure, say N.
1893		-
1894	1874	config X86_INTEL_MEMORY_PROTECTION_KEYS
1895		- prompt "Intel Memory Protection Keys"
	1875	+ prompt "Memory Protection Keys"
1896	1876	def_bool y
1897	1877	# Note: only available in 64-bit mode
1898		- depends on CPU_SUP_INTEL && X86_64
	1878	+ depends on X86_64 && (CPU_SUP_INTEL \|\| CPU_SUP_AMD)
1899	1879	select ARCH_USES_HIGH_VMA_FLAGS
1900	1880	select ARCH_HAS_PKEYS
1901		- ---help---
	1881	+ help
1902	1882	Memory Protection Keys provides a mechanism for enforcing
1903	1883	page-based protections, but without requiring modification of the
1904	1884	page tables when an application changes protection domains.
1905	1885
1906		- For details, see Documentation/x86/protection-keys.txt
	1886	+ For details, see Documentation/core-api/protection-keys.rst
1907	1887
1908	1888	If unsure, say y.
1909	1889
..	..	@@ -1958,7 +1938,7 @@
1958	1938	select UCS2_STRING
1959	1939	select EFI_RUNTIME_WRAPPERS
1960	1940	select ARCH_USE_MEMREMAP_PROT
1961		- ---help---
	1941	+ help
1962	1942	This enables the kernel to use EFI runtime services that are
1963	1943	available (such as the EFI variable services).
1964	1944
..	..	@@ -1970,19 +1950,19 @@
1970	1950	platforms.
1971	1951
1972	1952	config EFI_STUB
1973		- bool "EFI stub support"
1974		- depends on EFI && !X86_USE_3DNOW
1975		- select RELOCATABLE
1976		- ---help---
1977		- This kernel feature allows a bzImage to be loaded directly
	1953	+ bool "EFI stub support"
	1954	+ depends on EFI && !X86_USE_3DNOW
	1955	+ select RELOCATABLE
	1956	+ help
	1957	+ This kernel feature allows a bzImage to be loaded directly
1978	1958	by EFI firmware without the use of a bootloader.
1979	1959
1980		- See Documentation/efi-stub.txt for more information.
	1960	+ See Documentation/admin-guide/efi-stub.rst for more information.
1981	1961
1982	1962	config EFI_MIXED
1983	1963	bool "EFI mixed-mode support"
1984	1964	depends on EFI_STUB && X86_64
1985		- ---help---
	1965	+ help
1986	1966	Enabling this feature allows a 64-bit kernel to be booted
1987	1967	on a 32-bit firmware, provided that your CPU supports 64-bit
1988	1968	mode.
..	..	@@ -1993,28 +1973,12 @@
1993	1973
1994	1974	If unsure, say N.
1995	1975
1996		-config SECCOMP
1997		- def_bool y
1998		- prompt "Enable seccomp to safely compute untrusted bytecode"
1999		- ---help---
2000		- This kernel feature is useful for number crunching applications
2001		- that may need to compute untrusted bytecode during their
2002		- execution. By using pipes or other transports made available to
2003		- the process as file descriptors supporting the read/write
2004		- syscalls, it's possible to isolate those applications in
2005		- their own address space using seccomp. Once seccomp is
2006		- enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
2007		- and the task is only allowed to execute a few safe syscalls
2008		- defined by each seccomp mode.
2009		-
2010		- If unsure, say Y. Only embedded should say N here.
2011		-
2012		-source kernel/Kconfig.hz
	1976	+source "kernel/Kconfig.hz"
2013	1977
2014	1978	config KEXEC
2015	1979	bool "kexec system call"
2016	1980	select KEXEC_CORE
2017		- ---help---
	1981	+ help
2018	1982	kexec is a system call that implements the ability to shutdown your
2019	1983	current kernel, and to start another kernel. It is like a reboot
2020	1984	but it is independent of the system firmware. And like a reboot
..	..	@@ -2035,7 +1999,7 @@
2035	1999	depends on X86_64
2036	2000	depends on CRYPTO=y
2037	2001	depends on CRYPTO_SHA256=y
2038		- ---help---
	2002	+ help
2039	2003	This is new version of kexec system call. This system call is
2040	2004	file based and takes file descriptors as system call argument
2041	2005	for kernel and initramfs as opposed to list of segments as
..	..	@@ -2044,29 +2008,39 @@
2044	2008	config ARCH_HAS_KEXEC_PURGATORY
2045	2009	def_bool KEXEC_FILE
2046	2010
2047		-config KEXEC_VERIFY_SIG
	2011	+config KEXEC_SIG
2048	2012	bool "Verify kernel signature during kexec_file_load() syscall"
2049	2013	depends on KEXEC_FILE
2050		- ---help---
2051		- This option makes kernel signature verification mandatory for
2052		- the kexec_file_load() syscall.
	2014	+ help
2053	2015
2054		- In addition to that option, you need to enable signature
	2016	+ This option makes the kexec_file_load() syscall check for a valid
	2017	+ signature of the kernel image. The image can still be loaded without
	2018	+ a valid signature unless you also enable KEXEC_SIG_FORCE, though if
	2019	+ there's a signature that we can check, then it must be valid.
	2020	+
	2021	+ In addition to this option, you need to enable signature
2055	2022	verification for the corresponding kernel image type being
2056	2023	loaded in order for this to work.
2057	2024
	2025	+config KEXEC_SIG_FORCE
	2026	+ bool "Require a valid signature in kexec_file_load() syscall"
	2027	+ depends on KEXEC_SIG
	2028	+ help
	2029	+ This option makes kernel signature verification mandatory for
	2030	+ the kexec_file_load() syscall.
	2031	+
2058	2032	config KEXEC_BZIMAGE_VERIFY_SIG
2059	2033	bool "Enable bzImage signature verification support"
2060		- depends on KEXEC_VERIFY_SIG
	2034	+ depends on KEXEC_SIG
2061	2035	depends on SIGNED_PE_FILE_VERIFICATION
2062	2036	select SYSTEM_TRUSTED_KEYRING
2063		- ---help---
	2037	+ help
2064	2038	Enable bzImage signature verification support.
2065	2039
2066	2040	config CRASH_DUMP
2067	2041	bool "kernel crash dumps"
2068	2042	depends on X86_64 \|\| (X86_32 && HIGHMEM)
2069		- ---help---
	2043	+ help
2070	2044	Generate crash dump after being started by kexec.
2071	2045	This should be normally only set in special crash dump kernels
2072	2046	which are loaded in the main kernel with kexec-tools into
..	..	@@ -2075,19 +2049,19 @@
2075	2049	to a memory address not used by the main kernel or BIOS using
2076	2050	PHYSICAL_START, or it must be built as a relocatable image
2077	2051	(CONFIG_RELOCATABLE=y).
2078		- For more details see Documentation/kdump/kdump.txt
	2052	+ For more details see Documentation/admin-guide/kdump/kdump.rst
2079	2053
2080	2054	config KEXEC_JUMP
2081	2055	bool "kexec jump"
2082	2056	depends on KEXEC && HIBERNATION
2083		- ---help---
	2057	+ help
2084	2058	Jump between original kernel and kexeced kernel and invoke
2085	2059	code in physical address mode via KEXEC
2086	2060
2087	2061	config PHYSICAL_START
2088	2062	hex "Physical address where the kernel is loaded" if (EXPERT \|\| CRASH_DUMP)
2089	2063	default "0x1000000"
2090		- ---help---
	2064	+ help
2091	2065	This gives the physical address where the kernel is loaded.
2092	2066
2093	2067	If kernel is a not relocatable (CONFIG_RELOCATABLE=n) then
..	..	@@ -2112,7 +2086,7 @@
2112	2086	the reserved region. In other words, it can be set based on
2113	2087	the "X" value as specified in the "crashkernel=YM@XM"
2114	2088	command line boot parameter passed to the panic-ed
2115		- kernel. Please take a look at Documentation/kdump/kdump.txt
	2089	+ kernel. Please take a look at Documentation/admin-guide/kdump/kdump.rst
2116	2090	for more details about crash dumps.
2117	2091
2118	2092	Usage of bzImage for capturing the crash dump is recommended as
..	..	@@ -2128,7 +2102,7 @@
2128	2102	config RELOCATABLE
2129	2103	bool "Build a relocatable kernel"
2130	2104	default y
2131		- ---help---
	2105	+ help
2132	2106	This builds a kernel image that retains relocation information
2133	2107	so it can be loaded someplace besides the default 1MB.
2134	2108	The relocations tend to make the kernel binary about 10% larger,
..	..	@@ -2146,7 +2120,7 @@
2146	2120	bool "Randomize the address of the kernel image (KASLR)"
2147	2121	depends on RELOCATABLE
2148	2122	default y
2149		- ---help---
	2123	+ help
2150	2124	In support of Kernel Address Space Layout Randomization (KASLR),
2151	2125	this randomizes the physical address at which the kernel image
2152	2126	is decompressed and the virtual address where the kernel
..	..	@@ -2187,7 +2161,7 @@
2187	2161	default "0x200000"
2188	2162	range 0x2000 0x1000000 if X86_32
2189	2163	range 0x200000 0x1000000 if X86_64
2190		- ---help---
	2164	+ help
2191	2165	This value puts the alignment restrictions on physical address
2192	2166	where kernel is loaded and run from. Kernel is compiled for an
2193	2167	address which meets above alignment restriction.
..	..	@@ -2211,7 +2185,7 @@
2211	2185
2212	2186	config DYNAMIC_MEMORY_LAYOUT
2213	2187	bool
2214		- ---help---
	2188	+ help
2215	2189	This option makes base addresses of vmalloc and vmemmap as well as
2216	2190	__PAGE_OFFSET movable during boot.
2217	2191
..	..	@@ -2221,7 +2195,7 @@
2221	2195	depends on RANDOMIZE_BASE
2222	2196	select DYNAMIC_MEMORY_LAYOUT
2223	2197	default RANDOMIZE_BASE
2224		- ---help---
	2198	+ help
2225	2199	Randomizes the base virtual address of kernel memory sections
2226	2200	(physical memory mapping, vmalloc & vmemmap). This security feature
2227	2201	makes exploits relying on predictable memory locations less reliable.
..	..	@@ -2240,7 +2214,7 @@
2240	2214	default "0x0"
2241	2215	range 0x1 0x40 if MEMORY_HOTPLUG
2242	2216	range 0x0 0x40
2243		- ---help---
	2217	+ help
2244	2218	Define the padding in terabytes added to the existing physical
2245	2219	memory size during kernel memory randomization. It is useful
2246	2220	for memory hotplug support but reduces the entropy available for
..	..	@@ -2254,9 +2228,8 @@
2254	2228
2255	2229	config BOOTPARAM_HOTPLUG_CPU0
2256	2230	bool "Set default setting of cpu0_hotpluggable"
2257		- default n
2258	2231	depends on HOTPLUG_CPU
2259		- ---help---
	2232	+ help
2260	2233	Set whether default state of cpu0_hotpluggable is on or off.
2261	2234
2262	2235	Say Y here to enable CPU0 hotplug by default. If this switch
..	..	@@ -2285,7 +2258,7 @@
2285	2258	def_bool n
2286	2259	prompt "Debug CPU0 hotplug"
2287	2260	depends on HOTPLUG_CPU
2288		- ---help---
	2261	+ help
2289	2262	Enabling this option offlines CPU0 (if CPU0 can be offlined) as
2290	2263	soon as possible and boots up userspace with CPU0 offlined. User
2291	2264	can online CPU0 back after boot time.
..	..	@@ -2300,7 +2273,7 @@
2300	2273	def_bool n
2301	2274	prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
2302	2275	depends on COMPAT_32
2303		- ---help---
	2276	+ help
2304	2277	Certain buggy versions of glibc will crash if they are
2305	2278	presented with a 32-bit vDSO that is not mapped at the address
2306	2279	indicated in its segment table.
..	..	@@ -2324,7 +2297,7 @@
2324	2297	choice
2325	2298	prompt "vsyscall table for legacy applications"
2326	2299	depends on X86_64
2327		- default LEGACY_VSYSCALL_EMULATE
	2300	+ default LEGACY_VSYSCALL_XONLY
2328	2301	help
2329	2302	Legacy user code that does not know how to find the vDSO expects
2330	2303	to be able to issue three syscalls by calling fixed addresses in
..	..	@@ -2332,23 +2305,38 @@
2332	2305	it can be used to assist security vulnerability exploitation.
2333	2306
2334	2307	This setting can be changed at boot time via the kernel command
2335		- line parameter vsyscall=[emulate\|none].
	2308	+ line parameter vsyscall=[emulate\|xonly\|none].
2336	2309
2337	2310	On a system with recent enough glibc (2.14 or newer) and no
2338	2311	static binaries, you can say None without a performance penalty
2339	2312	to improve security.
2340	2313
2341		- If unsure, select "Emulate".
	2314	+ If unsure, select "Emulate execution only".
2342	2315
2343	2316	config LEGACY_VSYSCALL_EMULATE
2344		- bool "Emulate"
	2317	+ bool "Full emulation"
2345	2318	help
2346		- The kernel traps and emulates calls into the fixed
2347		- vsyscall address mapping. This makes the mapping
2348		- non-executable, but it still contains known contents,
2349		- which could be used in certain rare security vulnerability
2350		- exploits. This configuration is recommended when userspace
2351		- still uses the vsyscall area.
	2319	+ The kernel traps and emulates calls into the fixed vsyscall
	2320	+ address mapping. This makes the mapping non-executable, but
	2321	+ it still contains readable known contents, which could be
	2322	+ used in certain rare security vulnerability exploits. This
	2323	+ configuration is recommended when using legacy userspace
	2324	+ that still uses vsyscalls along with legacy binary
	2325	+ instrumentation tools that require code to be readable.
	2326	+
	2327	+ An example of this type of legacy userspace is running
	2328	+ Pin on an old binary that still uses vsyscalls.
	2329	+
	2330	+ config LEGACY_VSYSCALL_XONLY
	2331	+ bool "Emulate execution only"
	2332	+ help
	2333	+ The kernel traps and emulates calls into the fixed vsyscall
	2334	+ address mapping and does not allow reads. This
	2335	+ configuration is recommended when userspace might use the
	2336	+ legacy vsyscall area but support for legacy binary
	2337	+ instrumentation of legacy code is not needed. It mitigates
	2338	+ certain uses of the vsyscall area as an ASLR-bypassing
	2339	+ buffer.
2352	2340
2353	2341	config LEGACY_VSYSCALL_NONE
2354	2342	bool "None"
..	..	@@ -2363,7 +2351,7 @@
2363	2351
2364	2352	config CMDLINE_BOOL
2365	2353	bool "Built-in kernel command line"
2366		- ---help---
	2354	+ help
2367	2355	Allow for specifying boot arguments to the kernel at
2368	2356	build time. On some systems (e.g. embedded ones), it is
2369	2357	necessary or convenient to provide some or all of the
..	..	@@ -2381,7 +2369,7 @@
2381	2369	string "Built-in kernel command string"
2382	2370	depends on CMDLINE_BOOL
2383	2371	default ""
2384		- ---help---
	2372	+ help
2385	2373	Enter arguments here that should be compiled into the kernel
2386	2374	image and used at boot time. If the boot loader provides a
2387	2375	command line at boot time, it is appended to this string to
..	..	@@ -2396,8 +2384,8 @@
2396	2384
2397	2385	config CMDLINE_OVERRIDE
2398	2386	bool "Built-in command line overrides boot loader arguments"
2399		- depends on CMDLINE_BOOL
2400		- ---help---
	2387	+ depends on CMDLINE_BOOL && CMDLINE != ""
	2388	+ help
2401	2389	Set this option to 'Y' to have the kernel ignore the boot loader
2402	2390	command line, and use ONLY the built-in command line.
2403	2391
..	..	@@ -2407,7 +2395,7 @@
2407	2395	config MODIFY_LDT_SYSCALL
2408	2396	bool "Enable the LDT (local descriptor table)" if EXPERT
2409	2397	default y
2410		- ---help---
	2398	+ help
2411	2399	Linux can allow user programs to install a per-process x86
2412	2400	Local Descriptor Table (LDT) using the modify_ldt(2) system
2413	2401	call. This is required to run 16-bit or segmented code such as
..	..	@@ -2423,6 +2411,88 @@
2423	2411	source "kernel/livepatch/Kconfig"
2424	2412
2425	2413	endmenu
	2414	+
	2415	+config CC_HAS_SLS
	2416	+ def_bool $(cc-option,-mharden-sls=all)
	2417	+
	2418	+config CC_HAS_RETURN_THUNK
	2419	+ def_bool $(cc-option,-mfunction-return=thunk-extern)
	2420	+
	2421	+menuconfig SPECULATION_MITIGATIONS
	2422	+ bool "Mitigations for speculative execution vulnerabilities"
	2423	+ default y
	2424	+ help
	2425	+ Say Y here to enable options which enable mitigations for
	2426	+ speculative execution hardware vulnerabilities.
	2427	+
	2428	+ If you say N, all mitigations will be disabled. You really
	2429	+ should know what you are doing to say so.
	2430	+
	2431	+if SPECULATION_MITIGATIONS
	2432	+
	2433	+config PAGE_TABLE_ISOLATION
	2434	+ bool "Remove the kernel mapping in user mode"
	2435	+ default y
	2436	+ depends on (X86_64 \|\| X86_PAE)
	2437	+ help
	2438	+ This feature reduces the number of hardware side channels by
	2439	+ ensuring that the majority of kernel addresses are not mapped
	2440	+ into userspace.
	2441	+
	2442	+ See Documentation/x86/pti.rst for more details.
	2443	+
	2444	+config RETPOLINE
	2445	+ bool "Avoid speculative indirect branches in kernel"
	2446	+ default y
	2447	+ help
	2448	+ Compile kernel with the retpoline compiler options to guard against
	2449	+ kernel-to-user data leaks by avoiding speculative indirect
	2450	+ branches. Requires a compiler with -mindirect-branch=thunk-extern
	2451	+ support for full protection. The kernel may run slower.
	2452	+
	2453	+config RETHUNK
	2454	+ bool "Enable return-thunks"
	2455	+ depends on RETPOLINE && CC_HAS_RETURN_THUNK
	2456	+ default y if X86_64
	2457	+ help
	2458	+ Compile the kernel with the return-thunks compiler option to guard
	2459	+ against kernel-to-user data leaks by avoiding return speculation.
	2460	+ Requires a compiler with -mfunction-return=thunk-extern
	2461	+ support for full protection. The kernel may run slower.
	2462	+
	2463	+config CPU_UNRET_ENTRY
	2464	+ bool "Enable UNRET on kernel entry"
	2465	+ depends on CPU_SUP_AMD && RETHUNK && X86_64
	2466	+ default y
	2467	+ help
	2468	+ Compile the kernel with support for the retbleed=unret mitigation.
	2469	+
	2470	+config CPU_IBPB_ENTRY
	2471	+ bool "Enable IBPB on kernel entry"
	2472	+ depends on CPU_SUP_AMD && X86_64
	2473	+ default y
	2474	+ help
	2475	+ Compile the kernel with support for the retbleed=ibpb mitigation.
	2476	+
	2477	+config CPU_IBRS_ENTRY
	2478	+ bool "Enable IBRS on kernel entry"
	2479	+ depends on CPU_SUP_INTEL && X86_64
	2480	+ default y
	2481	+ help
	2482	+ Compile the kernel with support for the spectre_v2=ibrs mitigation.
	2483	+ This mitigates both spectre_v2 and retbleed at great cost to
	2484	+ performance.
	2485	+
	2486	+config SLS
	2487	+ bool "Mitigate Straight-Line-Speculation"
	2488	+ depends on CC_HAS_SLS && X86_64
	2489	+ default n
	2490	+ help
	2491	+ Compile the kernel with straight-line-speculation options to guard
	2492	+ against straight line speculation. The kernel image might be slightly
	2493	+ larger.
	2494	+
	2495	+endif
2426	2496
2427	2497	config ARCH_HAS_ADD_PAGES
2428	2498	def_bool y
..	..	@@ -2456,7 +2526,7 @@
2456	2526
2457	2527	config ARCH_HIBERNATION_HEADER
2458	2528	def_bool y
2459		- depends on X86_64 && HIBERNATION
	2529	+ depends on HIBERNATION
2460	2530
2461	2531	source "kernel/power/Kconfig"
2462	2532
..	..	@@ -2471,7 +2541,7 @@
2471	2541	menuconfig APM
2472	2542	tristate "APM (Advanced Power Management) BIOS support"
2473	2543	depends on X86_32 && PM_SLEEP
2474		- ---help---
	2544	+ help
2475	2545	APM is a BIOS specification for saving power using several different
2476	2546	techniques. This is mostly useful for battery powered laptops with
2477	2547	APM compliant BIOSes. If you say Y here, the system time will be
..	..	@@ -2486,7 +2556,7 @@
2486	2556	machines with more than one CPU.
2487	2557
2488	2558	In order to use APM, you will need supporting software. For location
2489		- and more information, read <file:Documentation/power/apm-acpi.txt>
	2559	+ and more information, read <file:Documentation/power/apm-acpi.rst>
2490	2560	and the Battery Powered Linux mini-HOWTO, available from
2491	2561	<http://www.tldp.org/docs.html#howto>.
2492	2562
..	..	@@ -2531,14 +2601,14 @@
2531	2601
2532	2602	config APM_IGNORE_USER_SUSPEND
2533	2603	bool "Ignore USER SUSPEND"
2534		- ---help---
	2604	+ help
2535	2605	This option will ignore USER SUSPEND requests. On machines with a
2536	2606	compliant APM BIOS, you want to say N. However, on the NEC Versa M
2537	2607	series notebooks, it is necessary to say Y because of a BIOS bug.
2538	2608
2539	2609	config APM_DO_ENABLE
2540	2610	bool "Enable PM at boot time"
2541		- ---help---
	2611	+ help
2542	2612	Enable APM features at boot time. From page 36 of the APM BIOS
2543	2613	specification: "When disabled, the APM BIOS does not automatically
2544	2614	power manage devices, enter the Standby State, enter the Suspend
..	..	@@ -2556,7 +2626,7 @@
2556	2626	config APM_CPU_IDLE
2557	2627	depends on CPU_IDLE
2558	2628	bool "Make CPU Idle calls when idle"
2559		- ---help---
	2629	+ help
2560	2630	Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
2561	2631	On some machines, this can activate improved power savings, such as
2562	2632	a slowed CPU clock rate, when the machine is idle. These idle calls
..	..	@@ -2567,7 +2637,7 @@
2567	2637
2568	2638	config APM_DISPLAY_BLANK
2569	2639	bool "Enable console blanking using APM"
2570		- ---help---
	2640	+ help
2571	2641	Enable console blanking using the APM. Some laptops can use this to
2572	2642	turn off the LCD backlight when the screen blanker of the Linux
2573	2643	virtual console blanks the screen. Note that this is only used by
..	..	@@ -2580,7 +2650,7 @@
2580	2650
2581	2651	config APM_ALLOW_INTS
2582	2652	bool "Allow interrupts during APM BIOS calls"
2583		- ---help---
	2653	+ help
2584	2654	Normally we disable external interrupts while we are making calls to
2585	2655	the APM BIOS as a measure to lessen the effects of a badly behaving
2586	2656	BIOS implementation. The BIOS should reenable interrupts if it
..	..	@@ -2601,20 +2671,11 @@
2601	2671
2602	2672	menu "Bus options (PCI etc.)"
2603	2673
2604		-config PCI
2605		- bool "PCI support"
2606		- default y
2607		- ---help---
2608		- Find out whether you have a PCI motherboard. PCI is the name of a
2609		- bus system, i.e. the way the CPU talks to the other stuff inside
2610		- your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
2611		- VESA. If you have PCI, say Y, otherwise N.
2612		-
2613	2674	choice
2614	2675	prompt "PCI access mode"
2615	2676	depends on X86_32 && PCI
2616	2677	default PCI_GOANY
2617		- ---help---
	2678	+ help
2618	2679	On PCI systems, the BIOS can be used to detect the PCI devices and
2619	2680	determine their configuration. However, some old PCI motherboards
2620	2681	have BIOS bugs and may crash if this is done. Also, some embedded
..	..	@@ -2671,10 +2732,6 @@
2671	2732	depends on PCI && XEN
2672	2733	select SWIOTLB_XEN
2673	2734
2674		-config PCI_DOMAINS
2675		- def_bool y
2676		- depends on PCI
2677		-
2678	2735	config MMCONF_FAM10H
2679	2736	def_bool y
2680	2737	depends on X86_64 && PCI_MMCONFIG && ACPI
..	..	@@ -2691,8 +2748,6 @@
2691	2748	is known to be incomplete.
2692	2749
2693	2750	You should say N unless you know you need this.
2694		-
2695		-source "drivers/pci/Kconfig"
2696	2751
2697	2752	config ISA_BUS
2698	2753	bool "ISA bus support on modern systems" if EXPERT
..	..	@@ -2717,34 +2772,16 @@
2717	2772
2718	2773	config ISA
2719	2774	bool "ISA support"
2720		- ---help---
	2775	+ help
2721	2776	Find out whether you have ISA slots on your motherboard. ISA is the
2722	2777	name of a bus system, i.e. the way the CPU talks to the other stuff
2723	2778	inside your box. Other bus systems are PCI, EISA, MicroChannel
2724	2779	(MCA) or VESA. ISA is an older system, now being displaced by PCI;
2725	2780	newer boards don't support it. If you have ISA, say Y, otherwise N.
2726	2781
2727		-config EISA
2728		- bool "EISA support"
2729		- depends on ISA
2730		- ---help---
2731		- The Extended Industry Standard Architecture (EISA) bus was
2732		- developed as an open alternative to the IBM MicroChannel bus.
2733		-
2734		- The EISA bus provided some of the features of the IBM MicroChannel
2735		- bus while maintaining backward compatibility with cards made for
2736		- the older ISA bus. The EISA bus saw limited use between 1988 and
2737		- 1995 when it was made obsolete by the PCI bus.
2738		-
2739		- Say Y here if you are building a kernel for an EISA-based machine.
2740		-
2741		- Otherwise, say N.
2742		-
2743		-source "drivers/eisa/Kconfig"
2744		-
2745	2782	config SCx200
2746	2783	tristate "NatSemi SCx200 support"
2747		- ---help---
	2784	+ help
2748	2785	This provides basic support for National Semiconductor's
2749	2786	(now AMD's) Geode processors. The driver probes for the
2750	2787	PCI-IDs of several on-chip devices, so its a good dependency
..	..	@@ -2756,7 +2793,7 @@
2756	2793	tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
2757	2794	depends on SCx200
2758	2795	default y
2759		- ---help---
	2796	+ help
2760	2797	This driver provides a clocksource built upon the on-chip
2761	2798	27MHz high-resolution timer. Its also a workaround for
2762	2799	NSC Geode SC-1100's buggy TSC, which loses time when the
..	..	@@ -2770,20 +2807,21 @@
2770	2807	select OF
2771	2808	select OF_PROMTREE
2772	2809	select IRQ_DOMAIN
2773		- ---help---
	2810	+ select OLPC_EC
	2811	+ help
2774	2812	Add support for detecting the unique features of the OLPC
2775	2813	XO hardware.
2776	2814
2777	2815	config OLPC_XO1_PM
2778	2816	bool "OLPC XO-1 Power Management"
2779	2817	depends on OLPC && MFD_CS5535=y && PM_SLEEP
2780		- ---help---
	2818	+ help
2781	2819	Add support for poweroff and suspend of the OLPC XO-1 laptop.
2782	2820
2783	2821	config OLPC_XO1_RTC
2784	2822	bool "OLPC XO-1 Real Time Clock"
2785	2823	depends on OLPC_XO1_PM && RTC_DRV_CMOS
2786		- ---help---
	2824	+ help
2787	2825	Add support for the XO-1 real time clock, which can be used as a
2788	2826	programmable wakeup source.
2789	2827
..	..	@@ -2792,7 +2830,7 @@
2792	2830	depends on OLPC && OLPC_XO1_PM && GPIO_CS5535=y
2793	2831	depends on INPUT=y
2794	2832	select POWER_SUPPLY
2795		- ---help---
	2833	+ help
2796	2834	Add support for SCI-based features of the OLPC XO-1 laptop:
2797	2835	- EC-driven system wakeups
2798	2836	- Power button
..	..	@@ -2805,7 +2843,7 @@
2805	2843	bool "OLPC XO-1.5 SCI extras"
2806	2844	depends on OLPC && ACPI
2807	2845	select POWER_SUPPLY
2808		- ---help---
	2846	+ help
2809	2847	Add support for SCI-based features of the OLPC XO-1.5 laptop:
2810	2848	- EC-driven system wakeups
2811	2849	- AC adapter status updates
..	..	@@ -2814,7 +2852,7 @@
2814	2852	config ALIX
2815	2853	bool "PCEngines ALIX System Support (LED setup)"
2816	2854	select GPIOLIB
2817		- ---help---
	2855	+ help
2818	2856	This option enables system support for the PCEngines ALIX.
2819	2857	At present this just sets up LEDs for GPIO control on
2820	2858	ALIX2/3/6 boards. However, other system specific setup should
..	..	@@ -2828,14 +2866,14 @@
2828	2866	config NET5501
2829	2867	bool "Soekris Engineering net5501 System Support (LEDS, GPIO, etc)"
2830	2868	select GPIOLIB
2831		- ---help---
	2869	+ help
2832	2870	This option enables system support for the Soekris Engineering net5501.
2833	2871
2834	2872	config GEOS
2835	2873	bool "Traverse Technologies GEOS System Support (LEDS, GPIO, etc)"
2836	2874	select GPIOLIB
2837	2875	depends on DMI
2838		- ---help---
	2876	+ help
2839	2877	This option enables system support for the Traverse Technologies GEOS.
2840	2878
2841	2879	config TS5500
..	..	@@ -2844,7 +2882,7 @@
2844	2882	select CHECK_SIGNATURE
2845	2883	select NEW_LEDS
2846	2884	select LEDS_CLASS
2847		- ---help---
	2885	+ help
2848	2886	This option enables system support for the Technologic Systems TS-5500.
2849	2887
2850	2888	endif # X86_32
..	..	@@ -2852,18 +2890,6 @@
2852	2890	config AMD_NB
2853	2891	def_bool y
2854	2892	depends on CPU_SUP_AMD && PCI
2855		-
2856		-source "drivers/pcmcia/Kconfig"
2857		-
2858		-config RAPIDIO
2859		- tristate "RapidIO support"
2860		- depends on PCI
2861		- default n
2862		- help
2863		- If enabled this option will include drivers and the core
2864		- infrastructure code to support RapidIO interconnect devices.
2865		-
2866		-source "drivers/rapidio/Kconfig"
2867	2893
2868	2894	config X86_SYSFB
2869	2895	bool "Mark VGA/VBE/EFI FB as generic system framebuffer"
..	..	@@ -2903,7 +2929,7 @@
2903	2929	select BINFMT_ELF
2904	2930	select COMPAT_BINFMT_ELF
2905	2931	select COMPAT_OLD_SIGACTION
2906		- ---help---
	2932	+ help
2907	2933	Include code to run legacy 32-bit programs under a
2908	2934	64-bit kernel. You should likely turn this on, unless you're
2909	2935	100% sure that you don't have any 32-bit programs left.
..	..	@@ -2911,13 +2937,19 @@
2911	2937	config IA32_AOUT
2912	2938	tristate "IA32 a.out support"
2913	2939	depends on IA32_EMULATION
2914		- ---help---
	2940	+ depends on BROKEN
	2941	+ help
2915	2942	Support old a.out binaries in the 32bit emulation.
2916	2943
2917	2944	config X86_X32
2918	2945	bool "x32 ABI for 64-bit mode"
2919	2946	depends on X86_64
2920		- ---help---
	2947	+ # llvm-objcopy does not convert x86_64 .note.gnu.property or
	2948	+ # compressed debug sections to x86_x32 properly:
	2949	+ # https://github.com/ClangBuiltLinux/linux/issues/514
	2950	+ # https://github.com/ClangBuiltLinux/linux/issues/1141
	2951	+ depends on $(success,$(OBJCOPY) --version \| head -n1 \| grep -qv llvm)
	2952	+ help
2921	2953	Include code to run binaries for the x32 native 32-bit ABI
2922	2954	for 64-bit processors. An x32 process gets access to the
2923	2955	full 64-bit register file and wide data path while leaving
..	..	@@ -2953,17 +2985,8 @@
2953	2985	def_bool y
2954	2986	depends on X86_32
2955	2987
2956		-config X86_DEV_DMA_OPS
2957		- bool
2958		- depends on X86_64 \|\| STA2X11
2959		-
2960		-config X86_DMA_REMAP
2961		- bool
2962		- depends on STA2X11
2963		-
2964		-config HAVE_GENERIC_GUP
2965		- def_bool y
2966		-
2967	2988	source "drivers/firmware/Kconfig"
2968	2989
2969	2990	source "arch/x86/kvm/Kconfig"
	2991	+
	2992	+source "arch/x86/Kconfig.assembler"