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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 fixes from Ingo Molnar:
 "A handful of fixes: a kexec linking fix, an AMD MWAITX fix, a vmware
  guest support fix when built under Clang, and new CPU model number
  definitions"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add Comet Lake to the Intel CPU models header
  lib/string: Make memzero_explicit() inline instead of external
  x86/cpu/vmware: Use the full form of INL in VMWARE_PORT
  x86/asm: Fix MWAITX C-state hint value
This commit is contained in:
Linus Torvalds 2019-10-12 14:46:14 -07:00
commit fcb45a2848
6 changed files with 27 additions and 26 deletions
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21
include/linux/string.h
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@ -227,7 +227,26 @@ static inline bool strstarts(const char *str, const char *prefix)
}
size_t memweight(const void *ptr, size_t bytes);
void memzero_explicit(void *s, size_t count);
/**
* memzero_explicit - Fill a region of memory (e.g. sensitive
* keying data) with 0s.
* @s: Pointer to the start of the area.
* @count: The size of the area.
*
* Note: usually using memset() is just fine (!), but in cases
* where clearing out _local_ data at the end of a scope is
* necessary, memzero_explicit() should be used instead in
* order to prevent the compiler from optimising away zeroing.
*
* memzero_explicit() doesn't need an arch-specific version as
* it just invokes the one of memset() implicitly.
*/
static inline void memzero_explicit(void *s, size_t count)
{
memset(s, 0, count);
barrier_data(s);
}
/**
* kbasename - return the last part of a pathname.