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| author |   Ingo Molnar <mingo@kernel.org> | 2015-02-19 12:06:04 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-19 12:31:34 +0100 |
| commit | a267b0a349bb021c010e36a2a13e1e16657b1b0f (patch) | |
| tree | 4438a10ecc864f15ce6f37c1764fffa995a9a175 /arch/x86/include | |
| parent | Merge branch 'tip-x86-mm' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/urgent (diff) | |
| parent | x86, mm/ASLR: Fix stack randomization on 64-bit systems (diff) | |
| download | linux-dev-a267b0a349bb021c010e36a2a13e1e16657b1b0f.tar.xz linux-dev-a267b0a349bb021c010e36a2a13e1e16657b1b0f.zip | |
Merge branch 'tip-x86-kaslr' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/urgent
Pull ASLR and kASLR fixes from Borislav Petkov:
- Add a global flag announcing KASLR state so that relevant code can do
informed decisions based on its setting. (Jiri Kosina)
- Fix a stack randomization entropy decrease bug. (Hector Marco-Gisbert)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/page_types.h | 3 | ||||
| -rw-r--r-- | arch/x86/include/uapi/asm/bootparam.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/page_types.h b/arch/x86/include/asm/page_types.h index f97fbe3abb67..3d43ce36eaba 100644 --- a/arch/x86/include/asm/page_types.h +++ b/arch/x86/include/asm/page_types.h @@ -3,6 +3,7 @@ #include <linux/const.h> #include <linux/types.h> +#include <asm/bootparam.h> /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 @@ -51,6 +52,8 @@ extern int devmem_is_allowed(unsigned long pagenr); extern unsigned long max_low_pfn_mapped; extern unsigned long max_pfn_mapped; +extern bool kaslr_enabled; + static inline phys_addr_t get_max_mapped(void) { return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; diff --git a/arch/x86/include/uapi/asm/bootparam.h b/arch/x86/include/uapi/asm/bootparam.h index 225b0988043a..44e6dd7e36a2 100644 --- a/arch/x86/include/uapi/asm/bootparam.h +++ b/arch/x86/include/uapi/asm/bootparam.h @@ -7,6 +7,7 @@ #define SETUP_DTB 2 #define SETUP_PCI 3 #define SETUP_EFI 4 +#define SETUP_KASLR 5 /* ram_size flags */ #define RAMDISK_IMAGE_START_MASK 0x07FF |