shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

x86/CPU: Add native CPUID variants returning a single datum

Browse Source 
commit 5dedade6df upstream.

... similarly to the cpuid_<reg>() variants.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20170109114147.5082-2-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Evalds Iodzevics <evalds.iodzevics@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Borislav Petkov
2017-01-09 12:41:43 +01:00
committed by Chris
parent 627c028382
commit 660227e156
1 changed files with 18 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
arch/x86/include/asm/processor.h
View File

@@ -213,6 +213,24 @@ static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
: "memory");
}
#define native_cpuid_reg(reg) \
static inline unsigned int native_cpuid_##reg(unsigned int op) \
{ \
unsigned int eax = op, ebx, ecx = 0, edx; \
\
native_cpuid(&eax, &ebx, &ecx, &edx); \
\
return reg; \
}
/*
* Native CPUID functions returning a single datum.
*/
native_cpuid_reg(eax)
native_cpuid_reg(ebx)
native_cpuid_reg(ecx)
native_cpuid_reg(edx)
static inline void load_cr3(pgd_t *pgdir)
{
write_cr3(__pa(pgdir));