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Date: Tue, 1 Apr 2014 10:36:06 +0200 From: Ingo Molnar <mingo@...nel.org> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>, Thomas Gleixner <tglx@...utronix.de> Subject: [GIT PULL] x86/cpufeature changes for v3.15 Linus, Please pull the latest x86-cpufeature-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-cpufeature-for-linus # HEAD: da4aaa7d860c63a1bfd3c73cf8309afe2840c5b9 x86, cpufeature: If we disable CLFLUSH, we should disable CLFLUSHOPT Two refinements to clflushopt support. out-of-topic modifications in x86-cpufeature-for-linus: --------------------------------------------------------- drivers/gpu/drm/gma500/mmu.c # 840d283: x86, cpufeature: Rename X86_FEATU Thanks, Ingo ------------------> H. Peter Anvin (2): x86, cpufeature: Rename X86_FEATURE_CLFLSH to X86_FEATURE_CLFLUSH x86, cpufeature: If we disable CLFLUSH, we should disable CLFLUSHOPT arch/x86/include/asm/cpufeature.h | 4 ++-- arch/x86/kernel/cpu/common.c | 3 ++- arch/x86/kernel/smpboot.c | 2 +- arch/x86/kvm/cpuid.c | 2 +- drivers/gpu/drm/gma500/mmu.c | 2 +- 5 files changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index bc507d7..63211ef 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -37,7 +37,7 @@ #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_CLFLSH (0*32+19) /* "clflush" CLFLUSH instruction */ +#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 */ @@ -318,7 +318,7 @@ extern const char * const x86_power_flags[32]; #define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN) #define cpu_has_ds boot_cpu_has(X86_FEATURE_DS) #define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS) -#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLSH) +#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLUSH) #define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS) #define cpu_has_gbpages boot_cpu_has(X86_FEATURE_GBPAGES) #define cpu_has_arch_perfmon boot_cpu_has(X86_FEATURE_ARCH_PERFMON) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 8e28bf2..cca53d8 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1025,7 +1025,8 @@ __setup("show_msr=", setup_show_msr); static __init int setup_noclflush(char *arg) { - setup_clear_cpu_cap(X86_FEATURE_CLFLSH); + setup_clear_cpu_cap(X86_FEATURE_CLFLUSH); + setup_clear_cpu_cap(X86_FEATURE_CLFLUSHOPT); return 1; } __setup("noclflush", setup_noclflush); diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index a32da80..ffc78c3 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1379,7 +1379,7 @@ static inline void mwait_play_dead(void) if (!this_cpu_has(X86_FEATURE_MWAIT)) return; - if (!this_cpu_has(X86_FEATURE_CLFLSH)) + if (!this_cpu_has(X86_FEATURE_CLFLUSH)) return; if (__this_cpu_read(cpu_info.cpuid_level) < CPUID_MWAIT_LEAF) return; diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index c697625..e5503d8 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -263,7 +263,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, F(TSC) | F(MSR) | F(PAE) | F(MCE) | F(CX8) | F(APIC) | 0 /* Reserved */ | F(SEP) | F(MTRR) | F(PGE) | F(MCA) | F(CMOV) | - F(PAT) | F(PSE36) | 0 /* PSN */ | F(CLFLSH) | + F(PAT) | F(PSE36) | 0 /* PSN */ | F(CLFLUSH) | 0 /* Reserved, DS, ACPI */ | F(MMX) | F(FXSR) | F(XMM) | F(XMM2) | F(SELFSNOOP) | 0 /* HTT, TM, Reserved, PBE */; diff --git a/drivers/gpu/drm/gma500/mmu.c b/drivers/gpu/drm/gma500/mmu.c index 49bac41..c3e67ba 100644 --- a/drivers/gpu/drm/gma500/mmu.c +++ b/drivers/gpu/drm/gma500/mmu.c @@ -520,7 +520,7 @@ struct psb_mmu_driver *psb_mmu_driver_init(uint8_t __iomem * registers, driver->has_clflush = 0; - if (boot_cpu_has(X86_FEATURE_CLFLSH)) { + if (boot_cpu_has(X86_FEATURE_CLFLUSH)) { uint32_t tfms, misc, cap0, cap4, clflush_size; /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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