Commit-ID: 5dedade6dfa243c130b85d1e4daba6f027805033 Gitweb: http://git.kernel.org/tip/5dedade6dfa243c130b85d1e4daba6f027805033 Author: Borislav Petkov <b...@suse.de> AuthorDate: Mon, 9 Jan 2017 12:41:43 +0100 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Mon, 9 Jan 2017 23:11:13 +0100
x86/CPU: Add native CPUID variants returning a single datum ... similarly to the cpuid_<reg>() variants. Signed-off-by: Borislav Petkov <b...@suse.de> Link: http://lkml.kernel.org/r/20170109114147.5082-2...@alien8.de Signed-off-by: Thomas Gleixner <t...@linutronix.de> --- arch/x86/include/asm/processor.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index eaf1005..1be64da 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -219,6 +219,24 @@ 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));
