add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/x86/kernel/sys_x86_64.c
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@@ -21,8 +21,6 @@
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 #include <asm/elf.h>
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 #include <asm/ia32.h>
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-#include <asm/syscalls.h>
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-#include <asm/mpx.h>
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 /*
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  * Align a virtual address to avoid aliasing in the I$ on AMD F15h.
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@@ -70,9 +68,6 @@
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 	if (*str == 0)
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 		return 1;
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-	if (*str == '=')
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-		str++;
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-
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 	if (!strcmp(str, "32"))
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 		va_align.flags = ALIGN_VA_32;
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 	else if (!strcmp(str, "64"))
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@@ -82,11 +77,11 @@
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 	else if (!strcmp(str, "on"))
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 		va_align.flags = ALIGN_VA_32 | ALIGN_VA_64;
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 	else
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-		return 0;
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+		pr_warn("invalid option value: 'align_va_addr=%s'\n", str);
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 	return 1;
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 }
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-__setup("align_va_addr", control_va_addr_alignment);
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+__setup("align_va_addr=", control_va_addr_alignment);
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 SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
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 		unsigned long, prot, unsigned long, flags,
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@@ -105,7 +100,7 @@
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 static void find_start_end(unsigned long addr, unsigned long flags,
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 		unsigned long *begin, unsigned long *end)
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 {
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-	if (!in_compat_syscall() && (flags & MAP_32BIT)) {
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+	if (!in_32bit_syscall() && (flags & MAP_32BIT)) {
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 		/* This is usually used needed to map code in small
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 		   model, so it needs to be in the first 31bit. Limit
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 		   it to that.  This means we need to move the
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@@ -122,7 +117,7 @@
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 	}
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 	*begin	= get_mmap_base(1);
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-	if (in_compat_syscall())
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+	if (in_32bit_syscall())
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 		*end = task_size_32bit();
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 	else
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 		*end = task_size_64bit(addr > DEFAULT_MAP_WINDOW);
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@@ -136,10 +131,6 @@
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 	struct vm_area_struct *vma;
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 	struct vm_unmapped_area_info info;
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 	unsigned long begin, end;
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-
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-	addr = mpx_unmapped_area_check(addr, len, flags);
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-	if (IS_ERR_VALUE(addr))
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-		return addr;
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 	if (flags & MAP_FIXED)
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 		return addr;
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@@ -180,10 +171,6 @@
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 	unsigned long addr = addr0;
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 	struct vm_unmapped_area_info info;
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-	addr = mpx_unmapped_area_check(addr, len, flags);
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-	if (IS_ERR_VALUE(addr))
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-		return addr;
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-
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 	/* requested length too big for entire address space */
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 	if (len > TASK_SIZE)
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 		return -ENOMEM;
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@@ -193,7 +180,7 @@
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 		return addr;
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 	/* for MAP_32BIT mappings we force the legacy mmap base */
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-	if (!in_compat_syscall() && (flags & MAP_32BIT))
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+	if (!in_32bit_syscall() && (flags & MAP_32BIT))
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 		goto bottomup;
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 	/* requesting a specific address */
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@@ -217,9 +204,10 @@
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 	 * If hint address is above DEFAULT_MAP_WINDOW, look for unmapped area
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 	 * in the full address space.
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 	 *
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-	 * !in_compat_syscall() check to avoid high addresses for x32.
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+	 * !in_32bit_syscall() check to avoid high addresses for x32
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+	 * (and make it no op on native i386).
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 	 */
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-	if (addr > DEFAULT_MAP_WINDOW && !in_compat_syscall())
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+	if (addr > DEFAULT_MAP_WINDOW && !in_32bit_syscall())
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 		info.high_limit += TASK_SIZE_MAX - DEFAULT_MAP_WINDOW;
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 	info.align_mask = 0;