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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-20 14:45:50 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-01-20 14:45:50 -0800 |
| commit | f4bcd8ccddb02833340652e9f46f5127828eb79d (patch) | |
| tree | 8e00cf5d56b332b129284c070316be1b25d4c3fb /arch/x86/boot/cpuflags.h | |
| parent | 7fe67a1180db49d41a3f764c379a08f8e31580ec (diff) | |
| parent | da2b6fb990cf782b18952f534ec7323453bc4fc9 (diff) | |
Merge branch 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 kernel address space randomization support from Peter Anvin:
"This enables kernel address space randomization for x86"
* 'x86-kaslr-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, kaslr: Clarify RANDOMIZE_BASE_MAX_OFFSET
x86, kaslr: Remove unused including <linux/version.h>
x86, kaslr: Use char array to gain sizeof sanity
x86, kaslr: Add a circular multiply for better bit diffusion
x86, kaslr: Mix entropy sources together as needed
x86/relocs: Add percpu fixup for GNU ld 2.23
x86, boot: Rename get_flags() and check_flags() to *_cpuflags()
x86, kaslr: Raise the maximum virtual address to -1 GiB on x86_64
x86, kaslr: Report kernel offset on panic
x86, kaslr: Select random position from e820 maps
x86, kaslr: Provide randomness functions
x86, kaslr: Return location from decompress_kernel
x86, boot: Move CPU flags out of cpucheck
x86, relocs: Add more per-cpu gold special cases
Diffstat (limited to 'arch/x86/boot/cpuflags.h')
| -rw-r--r-- | arch/x86/boot/cpuflags.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/boot/cpuflags.h b/arch/x86/boot/cpuflags.h new file mode 100644 index 00000000000..ea97697e51e --- /dev/null +++ b/arch/x86/boot/cpuflags.h @@ -0,0 +1,19 @@ +#ifndef BOOT_CPUFLAGS_H +#define BOOT_CPUFLAGS_H + +#include <asm/cpufeature.h> +#include <asm/processor-flags.h> + +struct cpu_features { + int level; /* Family, or 64 for x86-64 */ + int model; + u32 flags[NCAPINTS]; +}; + +extern struct cpu_features cpu; +extern u32 cpu_vendor[3]; + +int has_eflag(unsigned long mask); +void get_cpuflags(void); + +#endif |