From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/arch/arm/Kconfig | 416 ++++++++++++++++++----------------------------------------
1 files changed, 132 insertions(+), 284 deletions(-)
diff --git a/kernel/arch/arm/Kconfig b/kernel/arch/arm/Kconfig
index 019ef14..f6ce22c 100644
--- a/kernel/arch/arm/Kconfig
+++ b/kernel/arch/arm/Kconfig
@@ -2,40 +2,56 @@
config ARM
bool
default y
- select ARCH_CLOCKSOURCE_DATA
- select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID && !KEXEC
+ select ARCH_32BIT_OFF_T
+ select ARCH_HAS_BINFMT_FLAT
select ARCH_HAS_DEBUG_VIRTUAL if MMU
select ARCH_HAS_DEVMEM_IS_ALLOWED
+ select ARCH_HAS_DMA_WRITE_COMBINE if !ARM_DMA_MEM_BUFFERABLE
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_FORTIFY_SOURCE
+ select ARCH_HAS_KEEPINITRD
select ARCH_HAS_KCOV
select ARCH_HAS_MEMBARRIER_SYNC_CORE
+ select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
select ARCH_HAS_PTE_SPECIAL if ARM_LPAE
select ARCH_HAS_PHYS_TO_DMA
+ select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX if MMU && !XIP_KERNEL
- select ARCH_HAS_STRICT_MODULE_RWX if MMU
+ select ARCH_HAS_STRICT_MODULE_RWX if MMU && (!ROCKCHIP_MINI_KERNEL || STRICT_KERNEL_RWX)
+ select ARCH_HAS_SYNC_DMA_FOR_DEVICE if SWIOTLB
+ select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
+ select ARCH_HAS_TEARDOWN_DMA_OPS if MMU
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAS_GCOV_PROFILE_ALL
+ select ARCH_KEEP_MEMBLOCK
select ARCH_MIGHT_HAVE_PC_PARPORT
+ select ARCH_NO_SG_CHAIN if !ARM_HAS_SG_CHAIN
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
+ select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_IPC_PARSE_VERSION
- select BUILDTIME_EXTABLE_SORT if MMU
+ select ARCH_WANT_LD_ORPHAN_WARN
+ select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
+ select BUILDTIME_TABLE_SORT if MMU
select CLONE_BACKWARDS
- select CPU_PM if (SUSPEND || CPU_IDLE)
+ select CPU_PM if SUSPEND || CPU_IDLE
select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
- select DMA_DIRECT_OPS if !MMU
+ select DMA_DECLARE_COHERENT
+ select DMA_OPS
+ select DMA_REMAP if MMU
select EDAC_SUPPORT
select EDAC_ATOMIC_SCRUB
select GENERIC_ALLOCATOR
select GENERIC_ARCH_TOPOLOGY if ARM_CPU_TOPOLOGY
- select GENERIC_ATOMIC64 if (CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI)
+ select GENERIC_ATOMIC64 if CPU_V7M || CPU_V6 || !CPU_32v6K || !AEABI
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select GENERIC_IRQ_IPI if SMP
+ select ARCH_WANTS_IRQ_RAW if GENERIC_IRQ_IPI
select GENERIC_CPU_AUTOPROBE
select GENERIC_EARLY_IOREMAP
select GENERIC_IDLE_POLL_SETUP
@@ -49,12 +65,13 @@
select GENERIC_STRNLEN_USER
select HANDLE_DOMAIN_IRQ
select HARDIRQS_SW_RESEND
- select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
+ select HAVE_ARCH_AUDITSYSCALL if AEABI && !OABI_COMPAT
select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6
- select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU && !PREEMPT_RT_BASE
+ select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
select HAVE_ARCH_MMAP_RND_BITS if MMU
- select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
+ select HAVE_ARCH_SECCOMP
+ select HAVE_ARCH_SECCOMP_FILTER if AEABI && !OABI_COMPAT
select HAVE_ARCH_THREAD_STRUCT_WHITELIST
select HAVE_ARCH_TRACEHOOK
select HAVE_ARM_SMCCC if CPU_V7
@@ -63,17 +80,17 @@
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL
select HAVE_DMA_CONTIGUOUS if MMU
- select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
+ select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE
select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU
select HAVE_EXIT_THREAD
- select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
- select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)
- select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) && (CC_IS_GCC || CLANG_VERSION >= 100000)
+ select HAVE_FAST_GUP if ARM_LPAE
+ select HAVE_FTRACE_MCOUNT_RECORD if !XIP_KERNEL
+ select HAVE_FUNCTION_GRAPH_TRACER if !THUMB2_KERNEL && !CC_IS_CLANG
+ select HAVE_FUNCTION_TRACER if !XIP_KERNEL
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_GCC_PLUGINS
- select HAVE_GENERIC_DMA_COHERENT
- select HAVE_HW_BREAKPOINT if (PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7))
+ select HAVE_HW_BREAKPOINT if PERF_EVENTS && (CPU_V6 || CPU_V6K || CPU_V7)
select HAVE_IDE if PCI || ISA || PCMCIA
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_KERNEL_GZIP
@@ -82,17 +99,15 @@
select HAVE_KERNEL_LZO
select HAVE_KERNEL_XZ
select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
- select HAVE_KRETPROBES if (HAVE_KPROBES)
- select HAVE_MEMBLOCK
+ select HAVE_KRETPROBES if HAVE_KPROBES
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI
- select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
+ select HAVE_OPROFILE if HAVE_PERF_EVENTS
select HAVE_OPTPROBES if !THUMB2_KERNEL
select HAVE_PERF_EVENTS
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
- select HAVE_PREEMPT_LAZY
- select HAVE_RCU_TABLE_FREE if (SMP && ARM_LPAE)
+ select MMU_GATHER_RCU_TABLE_FREE if SMP && ARM_LPAE
select HAVE_REGS_AND_STACK_ACCESS_API
select HAVE_RSEQ
select HAVE_STACKPROTECTOR
@@ -102,14 +117,13 @@
select IRQ_FORCED_THREADING
select MODULES_USE_ELF_REL
select NEED_DMA_MAP_STATE
- select NO_BOOTMEM
select OF_EARLY_FLATTREE if OF
- select OF_RESERVED_MEM if OF
select OLD_SIGACTION
select OLD_SIGSUSPEND3
+ select PCI_SYSCALL if PCI
select PERF_USE_VMALLOC
- select REFCOUNT_FULL
select RTC_LIB
+ select SET_FS
select SYS_SUPPORTS_APM_EMULATION
# Above selects are sorted alphabetically; please add new ones
# according to that. Thanks.
@@ -122,7 +136,6 @@
<http://www.arm.linux.org.uk/>.
config ARM_HAS_SG_CHAIN
- select ARCH_HAS_SG_CHAIN
bool
config ARM_DMA_USE_IOMMU
@@ -151,9 +164,6 @@
endif
-config MIGHT_HAVE_PCI
- bool
-
config SYS_SUPPORTS_APM_EMULATION
bool
@@ -166,21 +176,6 @@
config NO_IOPORT_MAP
bool
-
-config EISA
- bool
- ---help---
- The Extended Industry Standard Architecture (EISA) bus was
- developed as an open alternative to the IBM MicroChannel bus.
-
- The EISA bus provided some of the features of the IBM MicroChannel
- bus while maintaining backward compatibility with cards made for
- the older ISA bus. The EISA bus saw limited use between 1988 and
- 1995 when it was made obsolete by the PCI bus.
-
- Say Y here if you are building a kernel for an EISA-based machine.
-
- Otherwise, say N.
config SBUS
bool
@@ -196,10 +191,6 @@
config TRACE_IRQFLAGS_SUPPORT
bool
default !CPU_V7M
-
-config RWSEM_XCHGADD_ALGORITHM
- bool
- default y
config ARCH_HAS_ILOG2_U32
bool
@@ -280,11 +271,7 @@
depends on !ARM_PATCH_PHYS_VIRT
default DRAM_BASE if !MMU
default 0x00000000 if ARCH_EBSA110 || \
- ARCH_FOOTBRIDGE || \
- ARCH_INTEGRATOR || \
- ARCH_IOP13XX || \
- ARCH_KS8695 || \
- ARCH_REALVIEW
+ ARCH_FOOTBRIDGE
default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
default 0x20000000 if ARCH_S5PV210
default 0xc0000000 if ARCH_SA1100
@@ -330,6 +317,9 @@
config ARCH_MULTIPLATFORM
bool "Allow multiple platforms to be selected"
depends on MMU
+ select ARCH_FLATMEM_ENABLE
+ select ARCH_SPARSEMEM_ENABLE
+ select ARCH_SELECT_MEMORY_MODEL
select ARM_HAS_SG_CHAIN
select ARM_PATCH_PHYS_VIRT
select AUTO_ZRELADDR
@@ -337,8 +327,8 @@
select COMMON_CLK
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_MULTI_HANDLER
- select MIGHT_HAVE_PCI
- select PCI_DOMAINS if PCI
+ select HAVE_PCI
+ select PCI_DOMAINS_GENERIC if PCI
select SPARSE_IRQ
select USE_OF
@@ -381,6 +371,7 @@
select CPU_ARM920T
select GENERIC_CLOCKEVENTS
select GPIOLIB
+ select HAVE_LEGACY_CLK
help
This enables support for the Cirrus EP93xx series of CPUs.
@@ -396,28 +387,6 @@
Support for systems based on the DC21285 companion chip
("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
-config ARCH_NETX
- bool "Hilscher NetX based"
- select ARM_VIC
- select CLKSRC_MMIO
- select CPU_ARM926T
- select GENERIC_CLOCKEVENTS
- help
- This enables support for systems based on the Hilscher NetX Soc
-
-config ARCH_IOP13XX
- bool "IOP13xx-based"
- depends on MMU
- select CPU_XSC3
- select NEED_MACH_MEMORY_H
- select NEED_RET_TO_USER
- select PCI
- select PLAT_IOP
- select VMSPLIT_1G
- select SPARSE_IRQ
- help
- Support for Intel's IOP13XX (XScale) family of processors.
-
config ARCH_IOP32X
bool "IOP32x-based"
depends on MMU
@@ -425,35 +394,26 @@
select GPIO_IOP
select GPIOLIB
select NEED_RET_TO_USER
- select PCI
+ select FORCE_PCI
select PLAT_IOP
help
Support for Intel's 80219 and IOP32X (XScale) family of
processors.
-
-config ARCH_IOP33X
- bool "IOP33x-based"
- depends on MMU
- select CPU_XSCALE
- select GPIO_IOP
- select GPIOLIB
- select NEED_RET_TO_USER
- select PCI
- select PLAT_IOP
- help
- Support for Intel's IOP33X (XScale) family of processors.
config ARCH_IXP4XX
bool "IXP4xx-based"
depends on MMU
select ARCH_HAS_DMA_SET_COHERENT_MASK
select ARCH_SUPPORTS_BIG_ENDIAN
- select CLKSRC_MMIO
select CPU_XSCALE
select DMABOUNCE if PCI
select GENERIC_CLOCKEVENTS
+ select GENERIC_IRQ_MULTI_HANDLER
+ select GPIO_IXP4XX
select GPIOLIB
- select MIGHT_HAVE_PCI
+ select HAVE_PCI
+ select IXP4XX_IRQ
+ select IXP4XX_TIMER
select NEED_MACH_IO_H
select USB_EHCI_BIG_ENDIAN_DESC
select USB_EHCI_BIG_ENDIAN_MMIO
@@ -466,7 +426,7 @@
select GENERIC_CLOCKEVENTS
select GENERIC_IRQ_MULTI_HANDLER
select GPIOLIB
- select MIGHT_HAVE_PCI
+ select HAVE_PCI
select MVEBU_MBUS
select PINCTRL
select PINCTRL_DOVE
@@ -476,48 +436,6 @@
help
Support for the Marvell Dove SoC 88AP510
-config ARCH_KS8695
- bool "Micrel/Kendin KS8695"
- select CLKSRC_MMIO
- select CPU_ARM922T
- select GENERIC_CLOCKEVENTS
- select GPIOLIB
- select NEED_MACH_MEMORY_H
- help
- Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
- System-on-Chip devices.
-
-config ARCH_W90X900
- bool "Nuvoton W90X900 CPU"
- select CLKDEV_LOOKUP
- select CLKSRC_MMIO
- select CPU_ARM926T
- select GENERIC_CLOCKEVENTS
- select GPIOLIB
- help
- Support for Nuvoton (Winbond logic dept.) ARM9 processor,
- At present, the w90x900 has been renamed nuc900, regarding
- the ARM series product line, you can login the following
- link address to know more.
-
- <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
- ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
-
-config ARCH_LPC32XX
- bool "NXP LPC32XX"
- select ARM_AMBA
- select CLKDEV_LOOKUP
- select CLKSRC_LPC32XX
- select COMMON_CLK
- select CPU_ARM926T
- select GENERIC_CLOCKEVENTS
- select GENERIC_IRQ_MULTI_HANDLER
- select GPIOLIB
- select SPARSE_IRQ
- select USE_OF
- help
- Support for the NXP LPC32XX family of processors
-
config ARCH_PXA
bool "PXA2xx/PXA3xx-based"
depends on MMU
@@ -525,7 +443,6 @@
select ARM_CPU_SUSPEND if PM
select AUTO_ZRELADDR
select COMMON_CLK
- select CLKDEV_LOOKUP
select CLKSRC_PXA
select CLKSRC_MMIO
select TIMER_OF
@@ -547,7 +464,7 @@
select ARCH_ACORN
select ARCH_MAY_HAVE_PC_FDC
select ARCH_SPARSEMEM_ENABLE
- select ARCH_USES_GETTIMEOFFSET
+ select ARM_HAS_SG_CHAIN
select CPU_SA110
select FIQ
select HAVE_IDE
@@ -564,10 +481,10 @@
bool "SA1100-based"
select ARCH_MTD_XIP
select ARCH_SPARSEMEM_ENABLE
- select CLKDEV_LOOKUP
select CLKSRC_MMIO
select CLKSRC_PXA
select TIMER_OF if OF
+ select COMMON_CLK
select CPU_FREQ
select CPU_SA1100
select GENERIC_CLOCKEVENTS
@@ -584,14 +501,12 @@
config ARCH_S3C24XX
bool "Samsung S3C24XX SoCs"
select ATAGS
- select CLKDEV_LOOKUP
select CLKSRC_SAMSUNG_PWM
select GENERIC_CLOCKEVENTS
select GPIO_SAMSUNG
select GPIOLIB
select GENERIC_IRQ_MULTI_HANDLER
select HAVE_S3C2410_I2C if I2C
- select HAVE_S3C2410_WATCHDOG if WATCHDOG
select HAVE_S3C_RTC if RTC_CLASS
select NEED_MACH_IO_H
select S3C2410_WATCHDOG
@@ -604,29 +519,9 @@
(<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or the
Samsung SMDK2410 development board (and derivatives).
-config ARCH_DAVINCI
- bool "TI DaVinci"
- select ARCH_HAS_HOLES_MEMORYMODEL
- select COMMON_CLK
- select CPU_ARM926T
- select GENERIC_ALLOCATOR
- select GENERIC_CLOCKEVENTS
- select GENERIC_IRQ_CHIP
- select GPIOLIB
- select HAVE_IDE
- select PM_GENERIC_DOMAINS if PM
- select PM_GENERIC_DOMAINS_OF if PM && OF
- select REGMAP_MMIO
- select RESET_CONTROLLER
- select USE_OF
- select ZONE_DMA
- help
- Support for TI's DaVinci platform.
-
config ARCH_OMAP1
bool "TI OMAP1"
depends on MMU
- select ARCH_HAS_HOLES_MEMORYMODEL
select ARCH_OMAP
select CLKDEV_LOOKUP
select CLKSRC_MMIO
@@ -635,6 +530,7 @@
select GENERIC_IRQ_MULTI_HANDLER
select GPIOLIB
select HAVE_IDE
+ select HAVE_LEGACY_CLK
select IRQ_DOMAIN
select NEED_MACH_IO_H if PCCARD
select NEED_MACH_MEMORY_H
@@ -706,6 +602,7 @@
select ARM_GIC_V3_ITS if PCI
select ARM_PSCI
select HAVE_ARM_ARCH_TIMER
+ select ARCH_SUPPORTS_BIG_ENDIAN
#
# This is sorted alphabetically by mach-* pathname. However, plat-*
@@ -743,7 +640,6 @@
source "arch/arm/mach-ep93xx/Kconfig"
source "arch/arm/mach-exynos/Kconfig"
-source "arch/arm/plat-samsung/Kconfig"
source "arch/arm/mach-footbridge/Kconfig"
@@ -757,33 +653,31 @@
source "arch/arm/mach-integrator/Kconfig"
-source "arch/arm/mach-iop13xx/Kconfig"
-
source "arch/arm/mach-iop32x/Kconfig"
-
-source "arch/arm/mach-iop33x/Kconfig"
source "arch/arm/mach-ixp4xx/Kconfig"
source "arch/arm/mach-keystone/Kconfig"
-source "arch/arm/mach-ks8695/Kconfig"
+source "arch/arm/mach-lpc32xx/Kconfig"
source "arch/arm/mach-mediatek/Kconfig"
source "arch/arm/mach-meson/Kconfig"
+source "arch/arm/mach-milbeaut/Kconfig"
+
source "arch/arm/mach-mmp/Kconfig"
source "arch/arm/mach-moxart/Kconfig"
+
+source "arch/arm/mach-mstar/Kconfig"
source "arch/arm/mach-mv78xx0/Kconfig"
source "arch/arm/mach-mvebu/Kconfig"
source "arch/arm/mach-mxs/Kconfig"
-
-source "arch/arm/mach-netx/Kconfig"
source "arch/arm/mach-nomadik/Kconfig"
@@ -810,13 +704,15 @@
source "arch/arm/mach-qcom/Kconfig"
+source "arch/arm/mach-rda/Kconfig"
+
+source "arch/arm/mach-realtek/Kconfig"
+
source "arch/arm/mach-realview/Kconfig"
source "arch/arm/mach-rockchip/Kconfig"
-source "arch/arm/mach-s3c24xx/Kconfig"
-
-source "arch/arm/mach-s3c64xx/Kconfig"
+source "arch/arm/mach-s3c/Kconfig"
source "arch/arm/mach-s5pv210/Kconfig"
@@ -847,11 +743,8 @@
source "arch/arm/mach-versatile/Kconfig"
source "arch/arm/mach-vexpress/Kconfig"
-source "arch/arm/plat-versatile/Kconfig"
source "arch/arm/mach-vt8500/Kconfig"
-
-source "arch/arm/mach-w90x900/Kconfig"
source "arch/arm/mach-zx/Kconfig"
@@ -914,9 +807,7 @@
config PLAT_VERSATILE
bool
-source "arch/arm/firmware/Kconfig"
-
-source arch/arm/mm/Kconfig
+source "arch/arm/mm/Kconfig"
config IWMMXT
bool "Enable iWMMXt support"
@@ -1134,7 +1025,7 @@
depends on CPU_V7
help
This option enables the workaround for the 775420 Cortex-A9 (r2p2,
- r2p6,r2p8,r2p10,r3p0) erratum. In case a date cache maintenance
+ r2p6,r2p8,r2p10,r3p0) erratum. In case a data cache maintenance
operation aborts with MMU exception, it might cause the processor
to deadlock. This workaround puts DSB before executing ISB if
an abort may occur on cache maintenance.
@@ -1191,6 +1082,14 @@
DMB NSHST or DMB ISHST instruction followed by a mix of Cacheable
and Device/Strongly-Ordered loads and stores might cause deadlock
+config ARM_ERRATA_857271
+ bool "ARM errata: A12: CPU might deadlock under some very rare internal conditions"
+ depends on CPU_V7
+ help
+ This option enables the workaround for the 857271 Cortex-A12
+ (all revs) erratum. Under very rare timing conditions, the CPU might
+ hang. The workaround is expected to have a < 1% performance impact.
+
config ARM_ERRATA_852421
bool "ARM errata: A17: DMB ST might fail to create order between stores"
depends on CPU_V7
@@ -1209,6 +1108,16 @@
lead to either a data corruption or a CPU deadlock. Not fixed in
any Cortex-A17 cores yet.
This is identical to Cortex-A12 erratum 852422. It is a separate
+ config option from the A12 erratum due to the way errata are checked
+ for and handled.
+
+config ARM_ERRATA_857272
+ bool "ARM errata: A17: CPU might deadlock under some very rare internal conditions"
+ depends on CPU_V7
+ help
+ This option enables the workaround for the 857272 Cortex-A17 erratum.
+ This erratum is not known to be fixed in any A17 revision.
+ This is identical to Cortex-A12 erratum 857271. It is a separate
config option from the A12 erratum due to the way errata are checked
for and handled.
@@ -1236,45 +1145,23 @@
config ISA_DMA_API
bool
-config PCI
- bool "PCI support" if MIGHT_HAVE_PCI
- help
- Find out whether you have a PCI motherboard. PCI is the name of a
- bus system, i.e. the way the CPU talks to the other stuff inside
- your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
- VESA. If you have PCI, say Y, otherwise N.
-
-config PCI_DOMAINS
- bool "Support for multiple PCI domains"
- depends on PCI
- help
- Enable PCI domains kernel management. Say Y if your machine
- has a PCI bus hierarchy that requires more than one PCI
- domain (aka segment) to be correctly managed. Say N otherwise.
-
- If you don't know what to do here, say N.
-
-config PCI_DOMAINS_GENERIC
- def_bool PCI_DOMAINS
-
config PCI_NANOENGINE
bool "BSE nanoEngine PCI support"
depends on SA1100_NANOENGINE
help
Enable PCI on the BSE nanoEngine board.
-config PCI_SYSCALL
- def_bool PCI
-
-config PCI_HOST_ITE8152
- bool
- depends on PCI && MACH_ARMCORE
- default y
- select DMABOUNCE
-
-source "drivers/pci/Kconfig"
-
-source "drivers/pcmcia/Kconfig"
+config ARM_ERRATA_814220
+ bool "ARM errata: Cache maintenance by set/way operations can execute out of order"
+ depends on CPU_V7
+ help
+ The v7 ARM states that all cache and branch predictor maintenance
+ operations that do not specify an address execute, relative to
+ each other, in program order.
+ However, because of this erratum, an L2 set/way cache maintenance
+ operation can overtake an L1 set/way cache maintenance operation.
+ This ERRATA only affected the Cortex-A7 and present in r0p2, r0p3,
+ r0p4, r0p5.
endmenu
@@ -1307,8 +1194,8 @@
uniprocessor machines. On a uniprocessor machine, the kernel
will run faster if you say N here.
- See also <file:Documentation/x86/i386/IO-APIC.txt>,
- <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO available at
+ See also <file:Documentation/x86/i386/IO-APIC.rst>,
+ <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO available at
<http://tldp.org/HOWTO/SMP-HOWTO.html>.
If you don't know what to do here, say N.
@@ -1353,19 +1240,17 @@
config HAVE_ARM_SCU
bool
help
- This option enables support for the ARM system coherency unit
+ This option enables support for the ARM snoop control unit
config HAVE_ARM_ARCH_TIMER
bool "Architected timer support"
depends on CPU_V7
select ARM_ARCH_TIMER
- select GENERIC_CLOCKEVENTS
help
This option enables support for the ARM architected timer
config HAVE_ARM_TWD
bool
- select TIMER_OF if OF
help
This options enables support for the ARM timer and watchdog unit
@@ -1472,12 +1357,13 @@
int
default 2048 if ARCH_SOCFPGA
default 1024 if ARCH_BRCMSTB || ARCH_RENESAS || ARCH_TEGRA || \
- ARCH_ZYNQ
+ ARCH_ZYNQ || ARCH_ASPEED
default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
default 416 if ARCH_SUNXI
default 392 if ARCH_U8500
default 352 if ARCH_VT8500
+ default 288 if ARCH_ROCKCHIP
default 264 if MACH_H4700
default 0
help
@@ -1539,37 +1425,6 @@
If unsure, say N.
-config THUMB2_AVOID_R_ARM_THM_JUMP11
- bool "Work around buggy Thumb-2 short branch relocations in gas"
- depends on THUMB2_KERNEL && MODULES
- default y
- help
- Various binutils versions can resolve Thumb-2 branches to
- locally-defined, preemptible global symbols as short-range "b.n"
- branch instructions.
-
- This is a problem, because there's no guarantee the final
- destination of the symbol, or any candidate locations for a
- trampoline, are within range of the branch. For this reason, the
- kernel does not support fixing up the R_ARM_THM_JUMP11 (102)
- relocation in modules at all, and it makes little sense to add
- support.
-
- The symptom is that the kernel fails with an "unsupported
- relocation" error when loading some modules.
-
- Until fixed tools are available, passing
- -fno-optimize-sibling-calls to gcc should prevent gcc generating
- code which hits this problem, at the cost of a bit of extra runtime
- stack usage in some cases.
-
- The problem is described in more detail at:
- https://bugs.launchpad.net/binutils-linaro/+bug/725126
-
- Only Thumb-2 kernels are affected.
-
- Unless you are sure your tools don't have this problem, say Y.
-
config ARM_PATCH_IDIV
bool "Runtime patch udiv/sdiv instructions into __aeabi_{u}idiv()"
depends on CPU_32v7 && !XIP_KERNEL
@@ -1626,24 +1481,18 @@
UNPREDICTABLE (in fact it can be predicted that it won't work
at all). If in doubt say N.
-config ARCH_HAS_HOLES_MEMORYMODEL
+config ARCH_SELECT_MEMORY_MODEL
+ bool
+
+config ARCH_FLATMEM_ENABLE
bool
config ARCH_SPARSEMEM_ENABLE
bool
-
-config ARCH_SPARSEMEM_DEFAULT
- def_bool ARCH_SPARSEMEM_ENABLE
-
-config ARCH_SELECT_MEMORY_MODEL
- def_bool ARCH_SPARSEMEM_ENABLE
+ select SPARSEMEM_STATIC if SPARSEMEM
config HAVE_ARCH_PFN_VALID
- def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
-
-config HAVE_GENERIC_GUP
def_bool y
- depends on ARM_LPAE
config HIGHMEM
bool "High Memory Support"
@@ -1766,20 +1615,6 @@
However, if the CPU data cache is using a write-allocate mode,
this option is unlikely to provide any performance gain.
-config SECCOMP
- bool
- prompt "Enable seccomp to safely compute untrusted bytecode"
- ---help---
- This kernel feature is useful for number crunching applications
- that may need to compute untrusted bytecode during their
- execution. By using pipes or other transports made available to
- the process as file descriptors supporting the read/write
- syscalls, it's possible to isolate those applications in
- their own address space using seccomp. Once seccomp is
- enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
- and the task is only allowed to execute a few safe syscalls
- defined by each seccomp mode.
-
config PARAVIRT
bool "Enable paravirtualization code"
help
@@ -1790,7 +1625,6 @@
config PARAVIRT_TIME_ACCOUNTING
bool "Paravirtual steal time accounting"
select PARAVIRT
- default n
help
Select this option to enable fine granularity task steal time
accounting. Time spent executing other tasks in parallel with
@@ -1816,6 +1650,21 @@
select PARAVIRT
help
Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
+
+config STACKPROTECTOR_PER_TASK
+ bool "Use a unique stack canary value for each task"
+ depends on GCC_PLUGINS && STACKPROTECTOR && SMP && !XIP_DEFLATED_DATA
+ select GCC_PLUGIN_ARM_SSP_PER_TASK
+ default y
+ help
+ Due to the fact that GCC uses an ordinary symbol reference from
+ which to load the value of the stack canary, this value can only
+ change at reboot time on SMP systems, and all tasks running in the
+ kernel's address space are forced to use the same canary value for
+ the entire duration that the system is up.
+
+ Enable this option to switch to a different method that uses a
+ different canary value for each task.
endmenu
@@ -1849,7 +1698,7 @@
# TEXT and BSS so we preserve their values in the config files.
config ZBOOT_ROM_TEXT
hex "Compressed ROM boot loader base address"
- default "0"
+ default 0x0
help
The physical address at which the ROM-able zImage is to be
placed in the target. Platforms which normally make use of
@@ -1860,7 +1709,7 @@
config ZBOOT_ROM_BSS
hex "Compressed ROM boot loader BSS address"
- default "0"
+ default 0x0
help
The base address of an area of read/write memory in the target
for the ROM-able zImage which must be available while the
@@ -1943,7 +1792,6 @@
choice
prompt "Kernel command line type" if CMDLINE != ""
default CMDLINE_FROM_BOOTLOADER
- depends on ATAGS
config CMDLINE_FROM_BOOTLOADER
bool "Use bootloader kernel arguments if available"
@@ -2041,7 +1889,7 @@
kdump/kexec. The crash dump kernel must be compiled to a
memory address not used by the main kernel
- For more details see Documentation/kdump/kdump.txt
+ For more details see Documentation/admin-guide/kdump/kdump.rst
config AUTO_ZRELADDR
bool "Auto calculation of the decompressed kernel image address"
@@ -2061,9 +1909,9 @@
select UCS2_STRING
select EFI_PARAMS_FROM_FDT
select EFI_STUB
- select EFI_ARMSTUB
+ select EFI_GENERIC_STUB
select EFI_RUNTIME_WRAPPERS
- ---help---
+ help
This option provides support for runtime services provided
by UEFI firmware (such as non-volatile variables, realtime
clock, and platform reset). A UEFI stub is also provided to
@@ -2105,7 +1953,7 @@
config FPE_NWFPE
bool "NWFPE math emulation"
depends on (!AEABI || OABI_COMPAT) && !THUMB2_KERNEL
- ---help---
+ help
Say Y to include the NWFPE floating point emulator in the kernel.
This is necessary to run most binaries. Linux does not currently
support floating point hardware so you need to say Y here even if
@@ -2129,7 +1977,7 @@
config FPE_FASTFPE
bool "FastFPE math emulation (EXPERIMENTAL)"
depends on (!AEABI || OABI_COMPAT) && !CPU_32v3
- ---help---
+ help
Say Y here to include the FAST floating point emulator in the kernel.
This is an experimental much faster emulator which now also has full
precision for the mantissa. It does not support any exceptions.
@@ -2147,7 +1995,7 @@
Say Y to include VFP support code in the kernel. This is needed
if your hardware includes a VFP unit.
- Please see <file:Documentation/arm/VFP/release-notes.txt> for
+ Please see <file:Documentation/arm/vfp/release-notes.rst> for
release notes and additional status information.
Say N if your target does not have VFP hardware.
@@ -2166,7 +2014,7 @@
config KERNEL_MODE_NEON
bool "Support for NEON in kernel mode"
- depends on NEON && AEABI && !PREEMPT_RT_BASE
+ depends on NEON && AEABI
help
Say Y to include support for NEON in kernel mode.
@@ -2198,4 +2046,4 @@
source "arch/arm/crypto/Kconfig"
endif
-source "arch/arm/kvm/Kconfig"
+source "arch/arm/Kconfig.assembler"
--
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