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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-04 17:12:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-04 17:12:45 -0700
commite9c9eecabaa898ff3fedd98813ee4ac1a00d006a (patch)
treeb74ac36e0c766b5662bf78577ac0ae2e0274642b /arch
parent19d402c1e75077e2bcfe17f7fe5bcfc8deb74991 (diff)
parentaf0fa6f6b5851761e9fbf79eb14ba86e857b4e7b (diff)
Merge branch 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpufeature updates from Ingo Molnar: "The main changes in this cycle were: - Continued cleanups of CPU bugs mis-marked as 'missing features', by Borislav Petkov. - Detect the xsaves/xrstors feature and releated cleanup, by Fenghua Yu" * 'x86-cpufeature-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, cpu: Kill cpu_has_mp x86, amd: Cleanup init_amd x86/cpufeature: Add bug flags to /proc/cpuinfo x86, cpufeature: Convert more "features" to bugs x86/xsaves: Detect xsaves/xrstors feature x86/cpufeature.h: Reformat x86 feature macros
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/apic.h2
-rw-r--r--arch/x86/include/asm/cpufeature.h409
-rw-r--r--arch/x86/include/asm/fpu-internal.h2
-rw-r--r--arch/x86/include/asm/mwait.h2
-rw-r--r--arch/x86/include/uapi/asm/msr-index.h2
-rw-r--r--arch/x86/kernel/cpu/amd.c341
-rw-r--r--arch/x86/kernel/cpu/common.c9
-rw-r--r--arch/x86/kernel/cpu/intel.c4
-rw-r--r--arch/x86/kernel/cpu/mkcapflags.sh51
-rw-r--r--arch/x86/kernel/cpu/proc.c8
-rw-r--r--arch/x86/kernel/cpu/scattered.c1
11 files changed, 433 insertions, 398 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 19b0ebafcd3e..79752f2bdec5 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -99,7 +99,7 @@ static inline void native_apic_mem_write(u32 reg, u32 v)
{
volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
- alternative_io("movl %0, %1", "xchgl %0, %1", X86_FEATURE_11AP,
+ alternative_io("movl %0, %1", "xchgl %0, %1", X86_BUG_11AP,
ASM_OUTPUT2("=r" (v), "=m" (*addr)),
ASM_OUTPUT2("0" (v), "m" (*addr)));
}
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index e265ff95d16d..bb9b258d60e7 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -8,7 +8,7 @@
#include <asm/required-features.h>
#endif
-#define NCAPINTS 10 /* N 32-bit words worth of info */
+#define NCAPINTS 11 /* N 32-bit words worth of info */
#define NBUGINTS 1 /* N 32-bit bug flags */
/*
@@ -18,213 +18,218 @@
*/
/* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
-#define X86_FEATURE_FPU (0*32+ 0) /* Onboard FPU */
-#define X86_FEATURE_VME (0*32+ 1) /* Virtual Mode Extensions */
-#define X86_FEATURE_DE (0*32+ 2) /* Debugging Extensions */
-#define X86_FEATURE_PSE (0*32+ 3) /* Page Size Extensions */
-#define X86_FEATURE_TSC (0*32+ 4) /* Time Stamp Counter */
-#define X86_FEATURE_MSR (0*32+ 5) /* Model-Specific Registers */
-#define X86_FEATURE_PAE (0*32+ 6) /* Physical Address Extensions */
-#define X86_FEATURE_MCE (0*32+ 7) /* Machine Check Exception */
-#define X86_FEATURE_CX8 (0*32+ 8) /* CMPXCHG8 instruction */
-#define X86_FEATURE_APIC (0*32+ 9) /* Onboard APIC */
-#define X86_FEATURE_SEP (0*32+11) /* SYSENTER/SYSEXIT */
-#define X86_FEATURE_MTRR (0*32+12) /* Memory Type Range Registers */
-#define X86_FEATURE_PGE (0*32+13) /* Page Global Enable */
-#define X86_FEATURE_MCA (0*32+14) /* Machine Check Architecture */
-#define X86_FEATURE_CMOV (0*32+15) /* CMOV instructions */
+#define X86_FEATURE_FPU ( 0*32+ 0) /* Onboard FPU */
+#define X86_FEATURE_VME ( 0*32+ 1) /* Virtual Mode Extensions */
+#define X86_FEATURE_DE ( 0*32+ 2) /* Debugging Extensions */
+#define X86_FEATURE_PSE ( 0*32+ 3) /* Page Size Extensions */
+#define X86_FEATURE_TSC ( 0*32+ 4) /* Time Stamp Counter */
+#define X86_FEATURE_MSR ( 0*32+ 5) /* Model-Specific Registers */
+#define X86_FEATURE_PAE ( 0*32+ 6) /* Physical Address Extensions */
+#define X86_FEATURE_MCE ( 0*32+ 7) /* Machine Check Exception */
+#define X86_FEATURE_CX8 ( 0*32+ 8) /* CMPXCHG8 instruction */
+#define X86_FEATURE_APIC ( 0*32+ 9) /* Onboard APIC */
+#define X86_FEATURE_SEP ( 0*32+11) /* SYSENTER/SYSEXIT */
+#define X86_FEATURE_MTRR ( 0*32+12) /* Memory Type Range Registers */
+#define X86_FEATURE_PGE ( 0*32+13) /* Page Global Enable */
+#define X86_FEATURE_MCA ( 0*32+14) /* Machine Check Architecture */
+#define X86_FEATURE_CMOV ( 0*32+15) /* CMOV instructions */
/* (plus FCMOVcc, FCOMI with FPU) */
-#define X86_FEATURE_PAT (0*32+16) /* Page Attribute Table */
-#define X86_FEATURE_PSE36 (0*32+17) /* 36-bit PSEs */
-#define X86_FEATURE_PN (0*32+18) /* Processor serial number */
-#define X86_FEATURE_CLFLUSH (0*32+19) /* CLFLUSH instruction */
-#define X86_FEATURE_DS (0*32+21) /* "dts" Debug Store */
-#define X86_FEATURE_ACPI (0*32+22) /* ACPI via MSR */
-#define X86_FEATURE_MMX (0*32+23) /* Multimedia Extensions */
-#define X86_FEATURE_FXSR (0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */
-#define X86_FEATURE_XMM (0*32+25) /* "sse" */
-#define X86_FEATURE_XMM2 (0*32+26) /* "sse2" */
-#define X86_FEATURE_SELFSNOOP (0*32+27) /* "ss" CPU self snoop */
-#define X86_FEATURE_HT (0*32+28) /* Hyper-Threading */
-#define X86_FEATURE_ACC (0*32+29) /* "tm" Automatic clock control */
-#define X86_FEATURE_IA64 (0*32+30) /* IA-64 processor */
-#define X86_FEATURE_PBE (0*32+31) /* Pending Break Enable */
+#define X86_FEATURE_PAT ( 0*32+16) /* Page Attribute Table */
+#define X86_FEATURE_PSE36 ( 0*32+17) /* 36-bit PSEs */
+#define X86_FEATURE_PN ( 0*32+18) /* Processor serial number */
+#define X86_FEATURE_CLFLUSH ( 0*32+19) /* CLFLUSH instruction */
+#define X86_FEATURE_DS ( 0*32+21) /* "dts" Debug Store */
+#define X86_FEATURE_ACPI ( 0*32+22) /* ACPI via MSR */
+#define X86_FEATURE_MMX ( 0*32+23) /* Multimedia Extensions */
+#define X86_FEATURE_FXSR ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */
+#define X86_FEATURE_XMM ( 0*32+25) /* "sse" */
+#define X86_FEATURE_XMM2 ( 0*32+26) /* "sse2" */
+#define X86_FEATURE_SELFSNOOP ( 0*32+27) /* "ss" CPU self snoop */
+#define X86_FEATURE_HT ( 0*32+28) /* Hyper-Threading */
+#define X86_FEATURE_ACC ( 0*32+29) /* "tm" Automatic clock control */
+#define X86_FEATURE_IA64 ( 0*32+30) /* IA-64 processor */
+#define X86_FEATURE_PBE ( 0*32+31) /* Pending Break Enable */
/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
/* Don't duplicate feature flags which are redundant with Intel! */
-#define X86_FEATURE_SYSCALL (1*32+11) /* SYSCALL/SYSRET */
-#define X86_FEATURE_MP (1*32+19) /* MP Capable. */
-#define X86_FEATURE_NX (1*32+20) /* Execute Disable */
-#define X86_FEATURE_MMXEXT (1*32+22) /* AMD MMX extensions */
-#define X86_FEATURE_FXSR_OPT (1*32+25) /* FXSAVE/FXRSTOR optimizations */
-#define X86_FEATURE_GBPAGES (1*32+26) /* "pdpe1gb" GB pages */
-#define X86_FEATURE_RDTSCP (1*32+27) /* RDTSCP */
-#define X86_FEATURE_LM (1*32+29) /* Long Mode (x86-64) */
-#define X86_FEATURE_3DNOWEXT (1*32+30) /* AMD 3DNow! extensions */
-#define X86_FEATURE_3DNOW (1*32+31) /* 3DNow! */
+#define X86_FEATURE_SYSCALL ( 1*32+11) /* SYSCALL/SYSRET */
+#define X86_FEATURE_MP ( 1*32+19) /* MP Capable. */
+#define X86_FEATURE_NX ( 1*32+20) /* Execute Disable */
+#define X86_FEATURE_MMXEXT ( 1*32+22) /* AMD MMX extensions */
+#define X86_FEATURE_FXSR_OPT ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */
+#define X86_FEATURE_GBPAGES ( 1*32+26) /* "pdpe1gb" GB pages */
+#define X86_FEATURE_RDTSCP ( 1*32+27) /* RDTSCP */
+#define X86_FEATURE_LM ( 1*32+29) /* Long Mode (x86-64) */
+#define X86_FEATURE_3DNOWEXT ( 1*32+30) /* AMD 3DNow! extensions */
+#define X86_FEATURE_3DNOW ( 1*32+31) /* 3DNow! */
/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
-#define X86_FEATURE_RECOVERY (2*32+ 0) /* CPU in recovery mode */
-#define X86_FEATURE_LONGRUN (2*32+ 1) /* Longrun power control */
-#define X86_FEATURE_LRTI (2*32+ 3) /* LongRun table interface */
+#define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */
+#define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */
+#define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */
/* Other features, Linux-defined mapping, word 3 */
/* This range is used for feature bits which conflict or are synthesized */
-#define X86_FEATURE_CXMMX (3*32+ 0) /* Cyrix MMX extensions */
-#define X86_FEATURE_K6_MTRR (3*32+ 1) /* AMD K6 nonstandard MTRRs */
-#define X86_FEATURE_CYRIX_ARR (3*32+ 2) /* Cyrix ARRs (= MTRRs) */
-#define X86_FEATURE_CENTAUR_MCR (3*32+ 3) /* Centaur MCRs (= MTRRs) */
+#define X86_FEATURE_CXMMX ( 3*32+ 0) /* Cyrix MMX extensions */
+#define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */
+#define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */
+#define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */
/* cpu types for specific tunings: */
-#define X86_FEATURE_K8 (3*32+ 4) /* "" Opteron, Athlon64 */
-#define X86_FEATURE_K7 (3*32+ 5) /* "" Athlon */
-#define X86_FEATURE_P3 (3*32+ 6) /* "" P3 */
-#define X86_FEATURE_P4 (3*32+ 7) /* "" P4 */
-#define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
-#define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */
-#define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* "" FXSAVE leaks FOP/FIP/FOP */
-#define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */
-#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */
-#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */
-#define X86_FEATURE_SYSCALL32 (3*32+14) /* "" syscall in ia32 userspace */
-#define X86_FEATURE_SYSENTER32 (3*32+15) /* "" sysenter in ia32 userspace */
-#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well */
-#define X86_FEATURE_MFENCE_RDTSC (3*32+17) /* "" Mfence synchronizes RDTSC */
-#define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* "" Lfence synchronizes RDTSC */
-#define X86_FEATURE_11AP (3*32+19) /* "" Bad local APIC aka 11AP */
-#define X86_FEATURE_NOPL (3*32+20) /* The NOPL (0F 1F) instructions */
-#define X86_FEATURE_ALWAYS (3*32+21) /* "" Always-present feature */
-#define X86_FEATURE_XTOPOLOGY (3*32+22) /* cpu topology enum extensions */
-#define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */
-#define X86_FEATURE_NONSTOP_TSC (3*32+24) /* TSC does not stop in C states */
-#define X86_FEATURE_CLFLUSH_MONITOR (3*32+25) /* "" clflush reqd with monitor */
-#define X86_FEATURE_EXTD_APICID (3*32+26) /* has extended APICID (8 bits) */
-#define X86_FEATURE_AMD_DCM (3*32+27) /* multi-node processor */
-#define X86_FEATURE_APERFMPERF (3*32+28) /* APERFMPERF */
-#define X86_FEATURE_EAGER_FPU (3*32+29) /* "eagerfpu" Non lazy FPU restore */
-#define X86_FEATURE_NONSTOP_TSC_S3 (3*32+30) /* TSC doesn't stop in S3 state */
+#define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */
+#define X86_FEATURE_K7 ( 3*32+ 5) /* "" Athlon */
+#define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */
+#define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */
+#define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */
+#define X86_FEATURE_UP ( 3*32+ 9) /* smp kernel running on up */
+/* free, was #define X86_FEATURE_FXSAVE_LEAK ( 3*32+10) * "" FXSAVE leaks FOP/FIP/FOP */
+#define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */
+#define X86_FEATURE_PEBS ( 3*32+12) /* Precise-Event Based Sampling */
+#define X86_FEATURE_BTS ( 3*32+13) /* Branch Trace Store */
+#define X86_FEATURE_SYSCALL32 ( 3*32+14) /* "" syscall in ia32 userspace */
+#define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in ia32 userspace */
+#define X86_FEATURE_REP_GOOD ( 3*32+16) /* rep microcode works well */
+#define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */
+#define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */
+/* free, was #define X86_FEATURE_11AP ( 3*32+19) * "" Bad local APIC aka 11AP */
+#define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */
+#define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */
+#define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* cpu topology enum extensions */
+#define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */
+#define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */
+/* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */
+#define X86_FEATURE_EXTD_APICID ( 3*32+26) /* has extended APICID (8 bits) */
+#define X86_FEATURE_AMD_DCM ( 3*32+27) /* multi-node processor */
+#define X86_FEATURE_APERFMPERF ( 3*32+28) /* APERFMPERF */
+#define X86_FEATURE_EAGER_FPU ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */
+#define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
-#define X86_FEATURE_XMM3 (4*32+ 0) /* "pni" SSE-3 */
-#define X86_FEATURE_PCLMULQDQ (4*32+ 1) /* PCLMULQDQ instruction */
-#define X86_FEATURE_DTES64 (4*32+ 2) /* 64-bit Debug Store */
-#define X86_FEATURE_MWAIT (4*32+ 3) /* "monitor" Monitor/Mwait support */
-#define X86_FEATURE_DSCPL (4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */
-#define X86_FEATURE_VMX (4*32+ 5) /* Hardware virtualization */
-#define X86_FEATURE_SMX (4*32+ 6) /* Safer mode */
-#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
-#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
-#define X86_FEATURE_SSSE3 (4*32+ 9) /* Supplemental SSE-3 */
-#define X86_FEATURE_CID (4*32+10) /* Context ID */
-#define X86_FEATURE_FMA (4*32+12) /* Fused multiply-add */
-#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
-#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */
-#define X86_FEATURE_PDCM (4*32+15) /* Performance Capabilities */
-#define X86_FEATURE_PCID (4*32+17) /* Process Context Identifiers */
-#define X86_FEATURE_DCA (4*32+18) /* Direct Cache Access */
-#define X86_FEATURE_XMM4_1 (4*32+19) /* "sse4_1" SSE-4.1 */
-#define X86_FEATURE_XMM4_2 (4*32+20) /* "sse4_2" SSE-4.2 */
-#define X86_FEATURE_X2APIC (4*32+21) /* x2APIC */
-#define X86_FEATURE_MOVBE (4*32+22) /* MOVBE instruction */
-#define X86_FEATURE_POPCNT (4*32+23) /* POPCNT instruction */
-#define X86_FEATURE_TSC_DEADLINE_TIMER (4*32+24) /* Tsc deadline timer */
-#define X86_FEATURE_AES (4*32+25) /* AES instructions */
-#define X86_FEATURE_XSAVE (4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
-#define X86_FEATURE_OSXSAVE (4*32+27) /* "" XSAVE enabled in the OS */
-#define X86_FEATURE_AVX (4*32+28) /* Advanced Vector Extensions */
-#define X86_FEATURE_F16C (4*32+29) /* 16-bit fp conversions */
-#define X86_FEATURE_RDRAND (4*32+30) /* The RDRAND instruction */
-#define X86_FEATURE_HYPERVISOR (4*32+31) /* Running on a hypervisor */
+#define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */
+#define X86_FEATURE_PCLMULQDQ ( 4*32+ 1) /* PCLMULQDQ instruction */
+#define X86_FEATURE_DTES64 ( 4*32+ 2) /* 64-bit Debug Store */
+#define X86_FEATURE_MWAIT ( 4*32+ 3) /* "monitor" Monitor/Mwait support */
+#define X86_FEATURE_DSCPL ( 4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */
+#define X86_FEATURE_VMX ( 4*32+ 5) /* Hardware virtualization */
+#define X86_FEATURE_SMX ( 4*32+ 6) /* Safer mode */
+#define X86_FEATURE_EST ( 4*32+ 7) /* Enhanced SpeedStep */
+#define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */
+#define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */
+#define X86_FEATURE_CID ( 4*32+10) /* Context ID */
+#define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */
+#define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B */
+#define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */
+#define X86_FEATURE_PDCM ( 4*32+15) /* Performance Capabilities */
+#define X86_FEATURE_PCID ( 4*32+17) /* Process Context Identifiers */
+#define X86_FEATURE_DCA ( 4*32+18) /* Direct Cache Access */
+#define X86_FEATURE_XMM4_1 ( 4*32+19) /* "sse4_1" SSE-4.1 */
+#define X86_FEATURE_XMM4_2 ( 4*32+20) /* "sse4_2" SSE-4.2 */
+#define X86_FEATURE_X2APIC ( 4*32+21) /* x2APIC */
+#define X86_FEATURE_MOVBE ( 4*32+22) /* MOVBE instruction */
+#define X86_FEATURE_POPCNT ( 4*32+23) /* POPCNT instruction */
+#define X86_FEATURE_TSC_DEADLINE_TIMER ( 4*32+24) /* Tsc deadline timer */
+#define X86_FEATURE_AES ( 4*32+25) /* AES instructions */
+#define X86_FEATURE_XSAVE ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
+#define X86_FEATURE_OSXSAVE ( 4*32+27) /* "" XSAVE enabled in the OS */
+#define X86_FEATURE_AVX ( 4*32+28) /* Advanced Vector Extensions */
+#define X86_FEATURE_F16C ( 4*32+29) /* 16-bit fp conversions */
+#define X86_FEATURE_RDRAND ( 4*32+30) /* The RDRAND instruction */
+#define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */
/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
-#define X86_FEATURE_XSTORE (5*32+ 2) /* "rng" RNG present (xstore) */
-#define X86_FEATURE_XSTORE_EN (5*32+ 3) /* "rng_en" RNG enabled */
-#define X86_FEATURE_XCRYPT (5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */
-#define X86_FEATURE_XCRYPT_EN (5*32+ 7) /* "ace_en" on-CPU crypto enabled */
-#define X86_FEATURE_ACE2 (5*32+ 8) /* Advanced Cryptography Engine v2 */
-#define X86_FEATURE_ACE2_EN (5*32+ 9) /* ACE v2 enabled */
-#define X86_FEATURE_PHE (5*32+10) /* PadLock Hash Engine */
-#define X86_FEATURE_PHE_EN (5*32+11) /* PHE enabled */
-#define X86_FEATURE_PMM (5*32+12) /* PadLock Montgomery Multiplier */
-#define X86_FEATURE_PMM_EN (5*32+13) /* PMM enabled */
+#define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */
+#define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */
+#define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */
+#define X86_FEATURE_XCRYPT_EN ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */
+#define X86_FEATURE_ACE2 ( 5*32+ 8) /* Advanced Cryptography Engine v2 */
+#define X86_FEATURE_ACE2_EN ( 5*32+ 9) /* ACE v2 enabled */
+#define X86_FEATURE_PHE ( 5*32+10) /* PadLock Hash Engine */
+#define X86_FEATURE_PHE_EN ( 5*32+11) /* PHE enabled */
+#define X86_FEATURE_PMM ( 5*32+12) /* PadLock Montgomery Multiplier */
+#define X86_FEATURE_PMM_EN ( 5*32+13) /* PMM enabled */
/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
-#define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */
-#define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */
-#define X86_FEATURE_SVM (6*32+ 2) /* Secure virtual machine */
-#define X86_FEATURE_EXTAPIC (6*32+ 3) /* Extended APIC space */
-#define X86_FEATURE_CR8_LEGACY (6*32+ 4) /* CR8 in 32-bit mode */
-#define X86_FEATURE_ABM (6*32+ 5) /* Advanced bit manipulation */
-#define X86_FEATURE_SSE4A (6*32+ 6) /* SSE-4A */
-#define X86_FEATURE_MISALIGNSSE (6*32+ 7) /* Misaligned SSE mode */
-#define X86_FEATURE_3DNOWPREFETCH (6*32+ 8) /* 3DNow prefetch instructions */
-#define X86_FEATURE_OSVW (6*32+ 9) /* OS Visible Workaround */
-#define X86_FEATURE_IBS (6*32+10) /* Instruction Based Sampling */
-#define X86_FEATURE_XOP (6*32+11) /* extended AVX instructions */
-#define X86_FEATURE_SKINIT (6*32+12) /* SKINIT/STGI instructions */
-#define X86_FEATURE_WDT (6*32+13) /* Watchdog timer */
-#define X86_FEATURE_LWP (6*32+15) /* Light Weight Profiling */
-#define X86_FEATURE_FMA4 (6*32+16) /* 4 operands MAC instructions */
-#define X86_FEATURE_TCE (6*32+17) /* translation cache extension */
-#define X86_FEATURE_NODEID_MSR (6*32+19) /* NodeId MSR */
-#define X86_FEATURE_TBM (6*32+21) /* trailing bit manipulations */
-#define X86_FEATURE_TOPOEXT (6*32+22) /* topology extensions CPUID leafs */
-#define X86_FEATURE_PERFCTR_CORE (6*32+23) /* core performance counter extensions */
-#define X86_FEATURE_PERFCTR_NB (6*32+24) /* NB performance counter extensions */
-#define X86_FEATURE_PERFCTR_L2 (6*32+28) /* L2 performance counter extensions */
+#define X86_FEATURE_LAHF_LM ( 6*32+ 0) /* LAHF/SAHF in long mode */
+#define X86_FEATURE_CMP_LEGACY ( 6*32+ 1) /* If yes HyperThreading not valid */
+#define X86_FEATURE_SVM ( 6*32+ 2) /* Secure virtual machine */
+#define X86_FEATURE_EXTAPIC ( 6*32+ 3) /* Extended APIC space */
+#define X86_FEATURE_CR8_LEGACY ( 6*32+ 4) /* CR8 in 32-bit mode */
+#define X86_FEATURE_ABM ( 6*32+ 5) /* Advanced bit manipulation */
+#define X86_FEATURE_SSE4A ( 6*32+ 6) /* SSE-4A */
+#define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */
+#define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */
+#define X86_FEATURE_OSVW ( 6*32+ 9) /* OS Visible Workaround */
+#define X86_FEATURE_IBS ( 6*32+10) /* Instruction Based Sampling */
+#define X86_FEATURE_XOP ( 6*32+11) /* extended AVX instructions */
+#define X86_FEATURE_SKINIT ( 6*32+12) /* SKINIT/STGI instructions */
+#define X86_FEATURE_WDT ( 6*32+13) /* Watchdog timer */
+#define X86_FEATURE_LWP ( 6*32+15) /* Light Weight Profiling */
+#define X86_FEATURE_FMA4 ( 6*32+16) /* 4 operands MAC instructions */
+#define X86_FEATURE_TCE ( 6*32+17) /* translation cache extension */
+#define X86_FEATURE_NODEID_MSR ( 6*32+19) /* NodeId MSR */
+#define X86_FEATURE_TBM ( 6*32+21) /* trailing bit manipulations */
+#define X86_FEATURE_TOPOEXT ( 6*32+22) /* topology extensions CPUID leafs */
+#define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* core performance counter extensions */
+#define X86_FEATURE_PERFCTR_NB ( 6*32+24) /* NB performance counter extensions */
+#define X86_FEATURE_PERFCTR_L2 ( 6*32+28) /* L2 performance counter extensions */
/*
* Auxiliary flags: Linux defined - For features scattered in various
* 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 */
-#define X86_FEATURE_XSAVEOPT (7*32+ 4) /* Optimized Xsave */
-#define X86_FEATURE_PLN (7*32+ 5) /* Intel Power Limit Notification */
-#define X86_FEATURE_PTS (7*32+ 6) /* Intel Package Thermal Status */
-#define X86_FEATURE_DTHERM (7*32+ 7) /* Digital Thermal Sensor */
-#define X86_FEATURE_HW_PSTATE (7*32+ 8) /* AMD HW-PState */
-#define X86_FEATURE_PROC_FEEDBACK (7*32+ 9) /* AMD ProcFeedbackInterface */
+#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 */
+#define X86_FEATURE_PLN ( 7*32+ 5) /* Intel Power Limit Notification */
+#define X86_FEATURE_PTS ( 7*32+ 6) /* Intel Package Thermal Status */
+#define X86_FEATURE_DTHERM ( 7*32+ 7) /* Digital Thermal Sensor */
+#define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */
+#define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */
/* 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 */
-#define X86_FEATURE_EPT (8*32+ 3) /* Intel Extended Page Table */
-#define X86_FEATURE_VPID (8*32+ 4) /* Intel Virtual Processor ID */
-#define X86_FEATURE_NPT (8*32+ 5) /* AMD Nested Page Table support */
-#define X86_FEATURE_LBRV (8*32+ 6) /* AMD LBR Virtualization support */
-#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 */
-#define X86_FEATURE_TSCRATEMSR (8*32+ 9) /* "tsc_scale" AMD TSC scaling support */
-#define X86_FEATURE_VMCBCLEAN (8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */
-#define X86_FEATURE_FLUSHBYASID (8*32+11) /* AMD flush-by-ASID support */
-#define X86_FEATURE_DECODEASSISTS (8*32+12) /* AMD Decode Assists support */
-#define X86_FEATURE_PAUSEFILTER (8*32+13) /* AMD filtered pause intercept */
-#define X86_FEATURE_PFTHRESHOLD (8*32+14) /* AMD pause filter threshold */
+#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 */
+#define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */
+#define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */
+#define X86_FEATURE_NPT ( 8*32+ 5) /* AMD Nested Page Table support */
+#define X86_FEATURE_LBRV ( 8*32+ 6) /* AMD LBR Virtualization support */
+#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 */
+#define X86_FEATURE_TSCRATEMSR ( 8*32+ 9) /* "tsc_scale" AMD TSC scaling support */
+#define X86_FEATURE_VMCBCLEAN ( 8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */
+#define X86_FEATURE_FLUSHBYASID ( 8*32+11) /* AMD flush-by-ASID support */
+#define X86_FEATURE_DECODEASSISTS ( 8*32+12) /* AMD Decode Assists support */
+#define X86_FEATURE_PAUSEFILTER ( 8*32+13) /* AMD filtered pause intercept */
+#define X86_FEATURE_PFTHRESHOLD ( 8*32+14) /* AMD pause filter threshold */
/* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
-#define X86_FEATURE_FSGSBASE (9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
-#define X86_FEATURE_TSC_ADJUST (9*32+ 1) /* TSC adjustment MSR 0x3b */
-#define X86_FEATURE_BMI1 (9*32+ 3) /* 1st group bit manipulation extensions */
-#define X86_FEATURE_HLE (9*32+ 4) /* Hardware Lock Elision */
-#define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */
-#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Protection */
-#define X86_FEATURE_BMI2 (9*32+ 8) /* 2nd group bit manipulation extensions */
-#define X86_FEATURE_ERMS (9*32+ 9) /* Enhanced REP MOVSB/STOSB */
-#define X86_FEATURE_INVPCID (9*32+10) /* Invalidate Processor Context ID */
-#define X86_FEATURE_RTM (9*32+11) /* Restricted Transactional Memory */
-#define X86_FEATURE_MPX (9*32+14) /* Memory Protection Extension */
-#define X86_FEATURE_AVX512F (9*32+16) /* AVX-512 Foundation */
-#define X86_FEATURE_RDSEED (9*32+18) /* The RDSEED instruction */
-#define X86_FEATURE_ADX (9*32+19) /* The ADCX and ADOX instructions */
-#define X86_FEATURE_SMAP (9*32+20) /* Supervisor Mode Access Prevention */
-#define X86_FEATURE_CLFLUSHOPT (9*32+23) /* CLFLUSHOPT instruction */
-#define X86_FEATURE_AVX512PF (9*32+26) /* AVX-512 Prefetch */
-#define X86_FEATURE_AVX512ER (9*32+27) /* AVX-512 Exponential and Reciprocal */
-#define X86_FEATURE_AVX512CD (9*32+28) /* AVX-512 Conflict Detection */
+#define X86_FEATURE_FSGSBASE ( 9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
+#define X86_FEATURE_TSC_ADJUST ( 9*32+ 1) /* TSC adjustment MSR 0x3b */
+#define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */
+#define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */
+#define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */
+#define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */
+#define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */
+#define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB */
+#define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */
+#define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */
+#define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */
+#define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */
+#define X86_FEATURE_RDSEED ( 9*32+18) /* The RDSEED instruction */
+#define X86_FEATURE_ADX ( 9*32+19) /* The ADCX and ADOX instructions */
+#define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */
+#define X86_FEATURE_CLFLUSHOPT ( 9*32+23) /* CLFLUSHOPT instruction */
+#define X86_FEATURE_AVX512PF ( 9*32+26) /* AVX-512 Prefetch */
+#define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */
+#define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */
+
+/* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */
+#define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */
+#define X86_FEATURE_XSAVEC (10*32+ 1) /* XSAVEC */
+#define X86_FEATURE_XGETBV1 (10*32+ 2) /* XGETBV with ECX = 1 */
+#define X86_FEATURE_XSAVES (10*32+ 3) /* XSAVES/XRSTORS */
/*
* BUG word(s)
@@ -234,8 +239,11 @@
#define X86_BUG_F00F X86_BUG(0) /* Intel F00F */
#define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */
#define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */
-#define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* AMD Erratum 383 */
-#define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* AMD Erratum 400 */
+#define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */
+#define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */
+#define X86_BUG_11AP X86_BUG(5) /* Bad local APIC aka 11AP */
+#define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */
+#define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
@@ -245,6 +253,12 @@
extern const char * const x86_cap_flags[NCAPINTS*32];
extern const char * const x86_power_flags[32];
+/*
+ * In order to save room, we index into this array by doing
+ * X86_BUG_<name> - NCAPINTS*32.
+ */
+extern const char * const x86_bug_flags[NBUGINTS*32];
+
#define test_cpu_cap(c, bit) \
test_bit(bit, (unsigned long *)((c)->x86_capability))
@@ -301,7 +315,6 @@ extern const char * const x86_power_flags[32];
#define cpu_has_avx boot_cpu_has(X86_FEATURE_AVX)
#define cpu_has_avx2 boot_cpu_has(X86_FEATURE_AVX2)
#define cpu_has_ht boot_cpu_has(X86_FEATURE_HT)
-#define cpu_has_mp boot_cpu_has(X86_FEATURE_MP)
#define cpu_has_nx boot_cpu_has(X86_FEATURE_NX)
#define cpu_has_k6_mtrr boot_cpu_has(X86_FEATURE_K6_MTRR)
#define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR)
@@ -328,6 +341,7 @@ extern const char * const x86_power_flags[32];
#define cpu_has_x2apic boot_cpu_has(X86_FEATURE_X2APIC)
#define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE)
#define cpu_has_xsaveopt boot_cpu_has(X86_FEATURE_XSAVEOPT)
+#define cpu_has_xsaves boot_cpu_has(X86_FEATURE_XSAVES)
#define cpu_has_osxsave boot_cpu_has(X86_FEATURE_OSXSAVE)
#define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR)
#define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ)
@@ -347,9 +361,6 @@ extern const char * const x86_power_flags[32];
#undef cpu_has_pae
#define cpu_has_pae ___BUG___
-#undef cpu_has_mp
-#define cpu_has_mp 1
-
#undef cpu_has_k6_mtrr
#define cpu_has_k6_mtrr 0
@@ -539,20 +550,20 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
#define static_cpu_has_safe(bit) boot_cpu_has(bit)
#endif
-#define cpu_has_bug(c, bit) cpu_has(c, (bit))
-#define set_cpu_bug(c, bit) set_cpu_cap(c, (bit))
-#define clear_cpu_bug(c, bit) clear_cpu_cap(c, (bit));
+#define cpu_has_bug(c, bit) cpu_has(c, (bit))
+#define set_cpu_bug(c, bit) set_cpu_cap(c, (bit))
+#define clear_cpu_bug(c, bit) clear_cpu_cap(c, (bit))
-#define static_cpu_has_bug(bit) static_cpu_has((bit))
-#define boot_cpu_has_bug(bit) cpu_has_bug(&boot_cpu_data, (bit))
+#define static_cpu_has_bug(bit) static_cpu_has((bit))
+#define static_cpu_has_bug_safe(bit) static_cpu_has_safe((bit))
+#define boot_cpu_has_bug(bit) cpu_has_bug(&boot_cpu_data, (bit))
-#define MAX_CPU_FEATURES (NCAPINTS * 32)
-#define cpu_have_feature boot_cpu_has
+#define MAX_CPU_FEATURES (NCAPINTS * 32)
+#define cpu_have_feature boot_cpu_has
-#define CPU_FEATURE_TYPEFMT "x86,ven%04Xfam%04Xmod%04X"
-#define CPU_FEATURE_TYPEVAL boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
- boot_cpu_data.x86_model
+#define CPU_FEATURE_TYPEFMT "x86,ven%04Xfam%04Xmod%04X"
+#define CPU_FEATURE_TYPEVAL boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
+ boot_cpu_data.x86_model
#endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
-
#endif /* _ASM_X86_CPUFEATURE_H */
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 115e3689cd53..e3b85422cf12 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -293,7 +293,7 @@ static inline int restore_fpu_checking(struct task_struct *tsk)
/* AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception
is pending. Clear the x87 state here by setting it to fixed
values. "m" is a random variable that should be in L1 */
- if (unlikely(static_cpu_has_safe(X86_FEATURE_FXSAVE_LEAK))) {
+ if (unlikely(static_cpu_has_bug_safe(X86_BUG_FXSAVE_LEAK))) {
asm volatile(
"fnclex\n\t"
"emms\n\t"
diff --git a/arch/x86/include/asm/mwait.h b/arch/x86/include/asm/mwait.h
index 1da25a5f96f9..a1410db38a1a 100644
--- a/arch/x86/include/asm/mwait.h
+++ b/arch/x86/include/asm/mwait.h
@@ -43,7 +43,7 @@ static inline void __mwait(unsigned long eax, unsigned long ecx)
static inline void mwait_idle_with_hints(unsigned long eax, unsigned long ecx)
{
if (!current_set_polling_and_test()) {
- if (static_cpu_has(X86_FEATURE_CLFLUSH_MONITOR)) {
+ if (static_cpu_has_bug(X86_BUG_CLFLUSH_MONITOR)) {
mb();
clflush((void *)&current_thread_info()->flags);
mb();
diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
index eaefcc66c855..eac9e92fe181 100644
--- a/arch/x86/include/uapi/asm/msr-index.h
+++ b/arch/x86/include/uapi/asm/msr-index.h
@@ -297,6 +297,8 @@
#define MSR_IA32_TSC_ADJUST 0x0000003b
#define MSR_IA32_BNDCFGS 0x00000d90
+#define MSR_IA32_XSS 0x00000da0
+
#define FEATURE_CONTROL_LOCKED (1<<0)
#define FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX (1<<1)
#define FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX (1<<2)
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index ce8b8ff0e0ef..bc360d3df60e 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -8,6 +8,7 @@
#include <asm/processor.h>
#include <asm/apic.h>
#include <asm/cpu.h>
+#include <asm/smp.h>
#include <asm/pci-direct.h>
#ifdef CONFIG_X86_64
@@ -50,7 +51,6 @@ static inline int wrmsrl_amd_safe(unsigned msr, unsigned long long val)
return wrmsr_safe_regs(gprs);
}
-#ifdef CONFIG_X86_32
/*
* B step AMD K6 before B 9730xxxx have hardware bugs that can cause
* misexecution of code under Linux. Owners of such processors should
@@ -70,6 +70,7 @@ __asm__(".globl vide\n\t.align 4\nvide: ret");
static void init_amd_k5(struct cpuinfo_x86 *c)
{
+#ifdef CONFIG_X86_32
/*
* General Systems BIOSen alias the cpu frequency registers
* of the Elan at 0x000df000. Unfortuantly, one of the Linux
@@ -83,11 +84,12 @@ static void init_amd_k5(struct cpuinfo_x86 *c)
if (inl(CBAR) & CBAR_ENB)
outl(0 | CBAR_KEY, CBAR);
}
+#endif
}
-
static void init_amd_k6(struct cpuinfo_x86 *c)
{
+#ifdef CONFIG_X86_32
u32 l, h;
int mbytes = get_num_physpages() >> (20-PAGE_SHIFT);
@@ -176,10 +178,44 @@ static void init_amd_k6(struct cpuinfo_x86 *c)
/* placeholder for any needed mods */
return;
}
+#endif
}
-static void amd_k7_smp_check(struct cpuinfo_x86 *c)
+static void init_amd_k7(struct cpuinfo_x86 *c)
{
+#ifdef CONFIG_X86_32
+ u32 l, h;
+
+ /*
+ * Bit 15 of Athlon specific MSR 15, needs to be 0
+ * to enable SSE on Palomino/Morgan/Barton CPU's.
+ * If the BIOS didn't enable it already, enable it here.
+ */
+ if (c->x86_model >= 6 && c->x86_model <= 10) {
+ if (!cpu_has(c, X86_FEATURE_XMM)) {
+ printk(KERN_INFO "Enabling disabled K7/SSE Support.\n");
+ msr_clear_bit(MSR_K7_HWCR, 15);
+ set_cpu_cap(c, X86_FEATURE_XMM);
+ }
+ }
+
+ /*
+ * It's been determined by AMD that Athlons since model 8 stepping 1
+ * are more robust with CLK_CTL set to 200xxxxx instead of 600xxxxx
+ * As per AMD technical note 27212 0.2
+ */
+ if ((c->x86_model == 8 && c->x86_mask >= 1) || (c->x86_model > 8)) {
+ rdmsr(MSR_K7_CLK_CTL, l, h);
+ if ((l & 0xfff00000) != 0x20000000) {
+ printk(KERN_INFO
+ "CPU: CLK_CTL MSR was %x. Reprogramming to %x\n",
+ l, ((l & 0x000fffff)|0x20000000));
+ wrmsr(MSR_K7_CLK_CTL, (l & 0x000fffff)|0x20000000, h);
+ }
+ }
+
+ set_cpu_cap(c, X86_FEATURE_K7);
+
/* calling is from identify_secondary_cpu() ? */
if (!c->cpu_index)
return;
@@ -207,7 +243,7 @@ static void amd_k7_smp_check(struct cpuinfo_x86 *c)
if (((c->x86_model == 6) && (c->x86_mask >= 2)) ||
((c->x86_model == 7) && (c->x86_mask >= 1)) ||
(c->x86_model > 7))
- if (cpu_has_mp)
+ if (cpu_has(c, X86_FEATURE_MP))
return;
/* If we get here, not a certified SMP capable AMD system. */
@@ -219,45 +255,8 @@ static void amd_k7_smp_check(struct cpuinfo_x86 *c)
WARN_ONCE(1, "WARNING: This combination of AMD"
" processors is not suitable for SMP.\n");
add_taint(TAINT_CPU_OUT_OF_SPEC, LOCKDEP_NOW_UNRELIABLE);
-}
-
-static void init_amd_k7(struct cpuinfo_x86 *c)
-{
- u32 l, h;
-
- /*
- * Bit 15 of Athlon specific MSR 15, needs to be 0
- * to enable SSE on Palomino/Morgan/Barton CPU's.
- * If the BIOS didn't enable it already, enable it here.
- */
- if (c->x86_model >= 6 && c->x86_model <= 10) {
- if (!cpu_has(c, X86_FEATURE_XMM)) {
- printk(KERN_INFO "Enabling disabled K7/SSE Support.\n");
- msr_clear_bit(MSR_K7_HWCR, 15);
- set_cpu_cap(c, X86_FEATURE_XMM);
- }
- }
-
- /*
- * It's been determined by AMD that Athlons since model 8 stepping 1
- * are more robust with CLK_CTL set to 200xxxxx instead of 600xxxxx
- * As per AMD technical note 27212 0.2
- */
- if ((c->x86_model == 8 && c->x86_mask >= 1) || (c->x86_model > 8)) {
- rdmsr(MSR_K7_CLK_CTL, l, h);
- if ((l & 0xfff00000) != 0x20000000) {
- printk(KERN_INFO
- "CPU: CLK_CTL MSR was %x. Reprogramming to %x\n",
- l, ((l & 0x000fffff)|0x20000000));
- wrmsr(MSR_K7_CLK_CTL, (l & 0x000fffff)|0x20000000, h);
- }
- }
-
- set_cpu_cap(c, X86_FEATURE_K7);
-
- amd_k7_smp_check(c);
-}
#endif
+}
#ifdef CONFIG_NUMA
/*
@@ -446,6 +445,26 @@ static void early_init_amd_mc(struct cpuinfo_x86 *c)
static void bsp_init_amd(struct cpuinfo_x86 *c)
{
+
+#ifdef CONFIG_X86_64
+ if (c->x86 >= 0xf) {
+ unsigned long long tseg;
+
+ /*
+ * Split up direct mapping around the TSEG SMM area.
+ * Don't do it for gbpages because there seems very little
+ * benefit in doing so.
+ */
+ if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) {
+ unsigned long pfn = tseg >> PAGE_SHIFT;
+
+ printk(KERN_DEBUG "tseg: %010llx\n", tseg);
+ if (pfn_range_is_mapped(pfn, pfn + 1))
+ set_memory_4k((unsigned long)__va(tseg), 1);
+ }
+ }
+#endif
+
if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
if (c->x86 > 0x10 ||
@@ -515,101 +534,74 @@ static const int amd_erratum_383[];
static const int amd_erratum_400[];
static bool cpu_has_amd_erratum(struct cpuinfo_x86 *cpu, const int *erratum);
-static void init_amd(struct cpuinfo_x86 *c)
+static void init_amd_k8(struct cpuinfo_x86 *c)
{
- u32 dummy;
- unsigned long long value;
-
-#ifdef CONFIG_SMP
- /*
- * Disable TLB flush filter by setting HWCR.FFDIS on K8
- * bit 6 of msr C001_0015
- *
- * Errata 63 for SH-B3 steppings
- * Errata 122 for all steppings (F+ have it disabled by default)
- */
- if (c->x86 == 0xf)
- msr_set_bit(MSR_K7_HWCR, 6);
-#endif
+ u32 level;
+ u64 value;
- early_init_amd(c);
+ /* On C+ stepping K8 rep microcode works well for copy/memset */
+ level = cpuid_eax(1);
+ if ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
/*
- * Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- * 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway
+ * Some BIOSes incorrectly force this feature, but only K8 revision D
+ * (model = 0x14) and later actually support it.
+ * (AMD Erratum #110, docId: 25759).
*/
- clear_cpu_cap(c, 0*32+31);
-
-#ifdef CONFIG_X86_64
- /* On C+ stepping K8 rep microcode works well for copy/memset */
- if (c->x86 == 0xf) {
- u32 level;
-
- level = cpuid_eax(1);
- if ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
-
- /*
- * Some BIOSes incorrectly force this feature, but only K8
- * revision D (model = 0x14) and later actually support it.
- * (AMD Erratum #110, docId: 25759).
- */
- if (c->x86_model < 0x14 && cpu_has(c, X86_FEATURE_LAHF_LM)) {
- clear_cpu_cap(c, X86_FEATURE_LAHF_LM);
- if (!rdmsrl_amd_safe(0xc001100d, &value)) {
- value &= ~(1ULL << 32);
- wrmsrl_amd_safe(0xc001100d, value);
- }
+ if (c->x86_model < 0x14 && cpu_has(c, X86_FEATURE_LAHF_LM)) {
+ clear_cpu_cap(c, X86_FEATURE_LAHF_LM);
+ if (!rdmsrl_amd_safe(0xc001100d, &value)) {
+ value &= ~BIT_64(32);
+ wrmsrl_amd_safe(0xc001100d, value);
}
-
}
- if (c->x86 >= 0x10)
- set_cpu_cap(c, X86_FEATURE_REP_GOOD);
- /* get apicid instead of initial apic id from cpuid */
- c->apicid = hard_smp_processor_id();
-#else
+ if (!c->x86_model_id[0])
+ strcpy(c->x86_model_id, "Hammer");
+}
+
+static void init_amd_gh(struct cpuinfo_x86 *c)
+{
+#ifdef CONFIG_X86_64
+ /* do this for boot cpu */
+ if (c == &boot_cpu_data)
+ check_enable_amd_mmconf_dmi();
+
+ fam10h_check_enable_mmcfg();
+#endif
/*
- * FIXME: We should handle the K5 here. Set up the write
- * range and also turn on MSR 83 bits 4 and 31 (write alloc,
- * no bus pipeline)
+ * Disable GART TLB Walk Errors on Fam10h. We do this here because this
+ * is always needed when GART is enabled, even in a kernel which has no
+ * MCE support built in. BIOS should disable GartTlbWlk Errors already.
+ * If it doesn't, we do it here as suggested by the BKDG.
+ *
+ * Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=33012
*/
+ msr_set_bit(MSR_AMD64_MCx_MASK(4), 10);
- switch (c->x86) {
- case 4:
- init_amd_k5(c);
- break;
- case 5:
- init_amd_k6(c);
- break;
- case 6: /* An Athlon/Duron */
- init_amd_k7(c);
- break;
- }
+ /*
+ * On family 10h BIOS may not have properly enabled WC+ support, causing
+ * it to be converted to CD memtype. This may result in performance
+ * degradation for certain nested-paging guests. Prevent this conversion
+ * by clearing bit 24 in MSR_AMD64_BU_CFG2.
+ *
+ * NOTE: we want to use the _safe accessors so as not to #GP kvm
+ * guests on older kvm hosts.
+ */
+ msr_clear_bit(MSR_AMD64_BU_CFG2, 24);
- /* K6s reports MCEs but don't actually have all the MSRs */
- if (c->x86 < 6)
- clear_cpu_cap(c, X86_FEATURE_MCE);
-#endif
+ if (cpu_has_amd_erratum(c, amd_erratum_383))
+ set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH);
+}
- /* Enable workaround for FXSAVE leak */
- if (c->x86 >= 6)
- set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK);
-
- if (!c->x86_model_id[0]) {
- switch (c->x86) {
- case 0xf:
- /* Should distinguish Models here, but this is only
- a fallback anyways. */
- strcpy(c->x86_model_id, "Hammer");
- break;
- }
- }
+static void init_amd_bd(struct cpuinfo_x86 *c)
+{
+ u64 value;
/* re-enable TopologyExtensions if switched off by BIOS */
- if ((c->x86 == 0x15) &&
- (c->x86_model >= 0x10) && (c->x86_model <= 0x1f) &&
+ if ((c->x86_model >= 0x10) && (c->x86_model <= 0x1f) &&
!cpu_has(c, X86_FEATURE_TOPOEXT)) {
if (msr_set_bit(0xc0011005, 54) > 0) {
@@ -625,14 +617,60 @@ static void init_amd(struct cpuinfo_x86 *c)
* The way access filter has a performance penalty on some workloads.
* Disable it on the affected CPUs.
*/
- if ((c->x86 == 0x15) &&
- (c->x86_model >= 0x02) && (c->x86_model < 0x20)) {
-
+ if ((c->x86_model >= 0x02) && (c->x86_model < 0x20)) {
if (!rdmsrl_safe(0xc0011021, &value) && !(value & 0x1E)) {
value |= 0x1E;
wrmsrl_safe(0xc0011021, value);
}
}
+}
+
+static void init_amd(struct cpuinfo_x86 *c)
+{
+ u32 dummy;
+
+#ifdef CONFIG_SMP
+ /*
+ * Disable TLB flush filter by setting HWCR.FFDIS on K8
+ * bit 6 of msr C001_0015
+ *
+ * Errata 63 for SH-B3 steppings
+ * Errata 122 for all steppings (F+ have it disabled by default)
+ */
+ if (c->x86 == 0xf)
+ msr_set_bit(MSR_K7_HWCR, 6);
+#endif
+
+ early_init_amd(c);
+
+ /*
+ * Bit 31 in normal CPUID used for nonstandard 3DNow ID;
+ * 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway
+ */
+ clear_cpu_cap(c, 0*32+31);
+
+ if (c->x86 >= 0x10)
+ set_cpu_cap(c, X86_FEATURE_REP_GOOD);
+
+ /* get apicid instead of initial apic id from cpuid */
+ c->apicid = hard_smp_processor_id();
+
+ /* K6s reports MCEs but don't actually have all the MSRs */
+ if (c->x86 < 6)
+ clear_cpu_cap(c, X86_FEATURE_MCE);
+
+ switch (c->x86) {
+ case 4: init_amd_k5(c); break;
+ case 5: init_amd_k6(c); break;
+ case 6: init_amd_k7(c); break;
+ case 0xf: init_amd_k8(c); break;
+ case 0x10: init_amd_gh(c); break;
+ case 0x15: init_amd_bd(c); break;
+ }
+
+ /* Enable workaround for FXSAVE leak */
+ if (c->x86 >= 6)
+ set_cpu_bug(c, X86_BUG_FXSAVE_LEAK);
cpu_detect_cache_sizes(c);
@@ -656,33 +694,6 @@ static void init_amd(struct cpuinfo_x86 *c)
set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC);
}
-#ifdef CONFIG_X86_64
- if (c->x86 == 0x10) {
- /* do this for boot cpu */
- if (c == &boot_cpu_data)
- check_enable_amd_mmconf_dmi();
-
- fam10h_check_enable_mmcfg();
- }
-
- if (c == &boot_cpu_data && c->x86 >= 0xf) {
- unsigned long long tseg;
-
- /*
- * Split up direct mapping around the TSEG SMM area.
- * Don't do it for gbpages because there seems very little
- * benefit in doing so.
- */
- if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg)) {
- unsigned long pfn = tseg >> PAGE_SHIFT;
-
- printk(KERN_DEBUG "tseg: %010llx\n", tseg);
- if (pfn_range_is_mapped(pfn, pfn + 1))
- set_memory_4k((unsigned long)__va(tseg), 1);
- }
- }
-#endif
-
/*
* Family 0x12 and above processors have APIC timer
* running in deep C states.
@@ -690,34 +701,6 @@ static void init_amd(struct cpuinfo_x86 *c)
if (c->x86 > 0x11)
set_cpu_cap(c, X86_FEATURE_ARAT);
- if (c->x86 == 0x10) {
- /*
- * Disable GART TLB Walk Errors on Fam10h. We do this here
- * because this is always needed when GART is enabled, even in a
- * kernel which has no MCE support built in.
- * BIOS should disable GartTlbWlk Errors already. If
- * it doesn't, do it here as suggested by the BKDG.
- *
- * Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=33012
- */
- msr_set_bit(MSR_AMD64_MCx_MASK(4), 10);
-
- /*
- * On family 10h BIOS may not have properly enabled WC+ support,
- * causing it to be converted to CD memtype. This may result in
- * performance degradation for certain nested-paging guests.
- * Prevent this conversion by clearing bit 24 in
- * MSR_AMD64_BU_CFG2.
- *
- * NOTE: we want to use the _safe accessors so as not to #GP kvm
- * guests on older kvm hosts.
- */
- msr_clear_bit(MSR_AMD64_BU_CFG2, 24);
-
- if (cpu_has_amd_erratum(c, amd_erratum_383))
- set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH);
- }
-
if (cpu_has_amd_erratum(c, amd_erratum_400))
set_cpu_bug(c, X86_BUG_AMD_APIC_C1E);
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index ef1b93f18ed1..188a8c5cc094 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -634,6 +634,15 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
c->x86_capability[9] = ebx;
}
+ /* Extended state features: level 0x0000000d */
+ if (c->cpuid_level >= 0x0000000d) {
+ u32 eax, ebx, ecx, edx;
+
+ cpuid_count(0x0000000d, 1, &eax, &ebx, &ecx, &edx);
+
+ c->x86_capability[10] = eax;
+ }
+
/* AMD-defined flags: level 0x80000001 */
xlvl = cpuid_eax(0x80000000);
c->extended_cpuid_level = xlvl;
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index f9e4fdd3b877..9483ee5b3991 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -253,7 +253,7 @@ static void intel_workarounds(struct cpuinfo_x86 *c)
*/
if (cpu_has_apic && (c->x86<<8 | c->x86_model<<4) == 0x520 &&
(c->x86_mask < 0x6 || c->x86_mask == 0xb))
- set_cpu_cap(c, X86_FEATURE_11AP);
+ set_cpu_bug(c, X86_BUG_11AP);
#ifdef CONFIG_X86_INTEL_USERCOPY
@@ -402,7 +402,7 @@ static void init_intel(struct cpuinfo_x86 *c)
if (c->x86 == 6 && cpu_has_clflush &&
(c->x86_model == 29 || c->x86_model == 46 || c->x86_model == 47))
- set_cpu_cap(c, X86_FEATURE_CLFLUSH_MONITOR);
+ set_cpu_bug(c, X86_BUG_CLFLUSH_MONITOR);
#ifdef CONFIG_X86_64
if (c->x86 == 15)
diff --git a/arch/x86/kernel/cpu/mkcapflags.sh b/arch/x86/kernel/cpu/mkcapflags.sh
index 2bf616505499..e2b22df964cd 100644
--- a/arch/x86/kernel/cpu/mkcapflags.sh
+++ b/arch/x86/kernel/cpu/mkcapflags.sh
@@ -1,23 +1,25 @@
#!/bin/sh
#
-# Generate the x86_cap_flags[] array from include/asm/cpufeature.h
+# Generate the x86_cap/bug_flags[] arrays from include/asm/cpufeature.h
#
IN=$1
OUT=$2
-TABS="$(printf '\t\t\t\t\t')"
-trap 'rm "$OUT"' EXIT
+function dump_array()
+{
+ ARRAY=$1
+ SIZE=$2
+ PFX=$3
+ POSTFIX=$4
-(
- echo "#ifndef _ASM_X86_CPUFEATURE_H"
- echo "#include <asm/cpufeature.h>"
- echo "#endif"
- echo ""
- echo "const char * const x86_cap_flags[NCAPINTS*32] = {"
+ PFX_SZ=$(echo $PFX | wc -c)
+ TABS="$(printf '\t\t\t\t\t')"
+
+ echo "const char * const $ARRAY[$SIZE] = {"
- # Iterate through any input lines starting with #define X86_FEATURE_
- sed -n -e 's/\t/ /g' -e 's/^ *# *define *X86_FEATURE_//p' $IN |
+ # Iterate through any input lines starting with #define $PFX
+ sed -n -e 's/\t/ /g' -e "s/^ *# *define *$PFX//p" $IN |
while read i
do
# Name is everything up to the first whitespace
@@ -31,11 +33,32 @@ trap 'rm "$OUT"' EXIT
# Name is uppercase, VALUE is all lowercase
VALUE="$(echo "$VALUE" | tr A-Z a-z)"
- TABCOUNT=$(( ( 5*8 - 14 - $(echo "$NAME" | wc -c) ) / 8 ))
- printf "\t[%s]%.*s = %s,\n" \
- "X86_FEATURE_$NAME" "$TABCOUNT" "$TABS" "$VALUE"
+ if [ -n "$POSTFIX" ]; then
+ T=$(( $PFX_SZ + $(echo $POSTFIX | wc -c) + 2 ))
+ TABS="$(printf '\t\t\t\t\t\t')"
+ TABCOUNT=$(( ( 6*8 - ($T + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
+ printf "\t[%s - %s]%.*s = %s,\n" "$PFX$NAME" "$POSTFIX" "$TABCOUNT" "$TABS" "$VALUE"
+ else
+ TABCOUNT=$(( ( 5*8 - ($PFX_SZ + 1) - $(echo "$NAME" | wc -c) ) / 8 ))
+ printf "\t[%s]%.*s = %s,\n" "$PFX$NAME" "$TABCOUNT" "$TABS" "$VALUE"
+ fi
done
echo "};"
+}
+
+trap 'rm "$OUT"' EXIT
+
+(
+ echo "#ifndef _ASM_X86_CPUFEATURE_H"
+ echo "#include <asm/cpufeature.h>"
+ echo "#endif"
+ echo ""
+
+ dump_array "x86_cap_flags" "NCAPINTS*32" "X86_FEATURE_" ""
+ echo ""
+
+ dump_array "x86_bug_flags" "NBUGINTS*32" "X86_BUG_" "NCAPINTS*32"
+
) > $OUT
trap - EXIT
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 06fe3ed8b851..5433658e598d 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -97,6 +97,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
seq_printf(m, " %s", x86_cap_flags[i]);
+ seq_printf(m, "\nbugs\t\t:");
+ for (i = 0; i < 32*NBUGINTS; i++) {
+ unsigned int bug_bit = 32*NCAPINTS + i;
+
+ if (cpu_has_bug(c, bug_bit) && x86_bug_flags[i])
+ seq_printf(m, " %s", x86_bug_flags[i]);
+ }
+
seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
c->loops_per_jiffy/(500000/HZ),
(c->loops_per_jiffy/(5000/HZ)) % 100);
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
index b6f794aa1693..4a8013d55947 100644
--- a/arch/x86/kernel/cpu/scattered.c
+++ b/arch/x86/kernel/cpu/scattered.c
@@ -38,7 +38,6 @@ void init_scattered_cpuid_features(struct cpuinfo_x86 *c)
{ X86_FEATURE_PTS, CR_EAX, 6, 0x00000006, 0 },
{ X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006, 0 },
{ X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 },
- { X86_FEATURE_XSAVEOPT, CR_EAX, 0, 0x0000000d, 1 },
{ X86_FEATURE_HW_PSTATE, CR_EDX, 7, 0x80000007, 0 },
{ X86_FEATURE_CPB, CR_EDX, 9, 0x80000007, 0 },
{ X86_FEATURE_PROC_FEEDBACK, CR_EDX,11, 0x80000007, 0 },