xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86, cpu: Support the features flags in new CPUID leaf 7

Browse Source 
Intel has defined CPUID leaf 7 as the next set of feature flags (see
the AVX specification, version 007).  Add support for this new feature
flags word.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <tip-*@vger.kernel.org>
This commit is contained in:
H. Peter Anvin
2010-07-07 17:29:18 -07:00
parent 24da9c26f3
commit bdc802dcca
3 changed files with 21 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
arch/x86/include/asm/cpufeature.h
View File

@@ -6,7 +6,7 @@
#include <asm/required-features.h>
#define NCAPINTS 9 /* N 32-bit words worth of info */
#define NCAPINTS 10 /* N 32-bit words worth of info */
/*
* Note: If the comment begins with a quoted string, that string is used
@@ -159,14 +159,14 @@
/*
* Auxiliary flags: Linux defined - For features scattered in various
* CPUID levels like 0x6, 0xA etc
* CPUID levels like 0x6, 0xA etc, word 7
*/
#define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */
#define X86_FEATURE_ARAT (7*32+ 1) /* Always Running APIC Timer */
#define X86_FEATURE_CPB (7*32+ 2) /* AMD Core Performance Boost */
#define X86_FEATURE_EPB (7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */
/* Virtualization flags: Linux defined */
/* Virtualization flags: Linux defined, word 8 */
#define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */
#define X86_FEATURE_VNMI (8*32+ 1) /* Intel Virtual NMI */
#define X86_FEATURE_FLEXPRIORITY (8*32+ 2) /* Intel FlexPriority */
@@ -177,6 +177,9 @@
#define X86_FEATURE_SVML (8*32+7) /* "svm_lock" AMD SVM locking MSR */
#define X86_FEATURE_NRIPS (8*32+8) /* "nrip_save" AMD SVM next_rip save */
/* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
#define X86_FEATURE_FSGSBASE (9*32+0) /* {RD/WR}{FS/GS}BASE instructions*/
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#include <asm/asm.h>
@@ -197,7 +200,9 @@ extern const char * const x86_power_flags[32];
(((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \
(((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \
(((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \
(((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) ) \
(((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) || \
(((bit)>>5)==8 && (1UL<<((bit)&31) & REQUIRED_MASK8)) || \
(((bit)>>5)==9 && (1UL<<((bit)&31) & REQUIRED_MASK9)) ) \
? 1 : \
test_cpu_cap(c, bit))