diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2012-11-28 19:50:27 (GMT) |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-11-29 21:23:02 (GMT) |
| commit | 094ab1db7cb7833cd4c820acd868fc26acf3f08e (patch) | |
| tree | 8f68b528df0673c9a2d98a72d7bca18ca8c5045c /arch/x86 | |
| parent | e5bb8ad862a97a0facc83f3b81731de919fec6ad (diff) | |
| download | linux-094ab1db7cb7833cd4c820acd868fc26acf3f08e.tar.xz | |
x86, 386 removal: Remove CONFIG_INVLPG
All 486+ CPUs support INVLPG, so remove the fallback 386 support
code.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1354132230-21854-6-git-send-email-hpa@linux.intel.com
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig.cpu | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 6 | ||||
| -rw-r--r-- | arch/x86/include/asm/tlbflush.h | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 3 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/intel.c | 4 | ||||
| -rw-r--r-- | arch/x86/mm/tlb.c | 8 |
6 files changed, 3 insertions, 25 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 8e5867c..d3bdc18 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -328,10 +328,6 @@ config X86_INVD_BUG config X86_WP_WORKS_OK def_bool y -config X86_INVLPG - def_bool y - depends on X86_32 - config X86_POPAD_OK def_bool y depends on X86_32 diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 8c297aa..ff8dd62 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -312,12 +312,6 @@ extern const char * const x86_power_flags[32]; #define cpu_has_cx16 boot_cpu_has(X86_FEATURE_CX16) #define cpu_has_eager_fpu boot_cpu_has(X86_FEATURE_EAGER_FPU) -#if defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_64) -# define cpu_has_invlpg 1 -#else -# define cpu_has_invlpg (boot_cpu_data.x86 > 3) -#endif - #ifdef CONFIG_X86_64 #undef cpu_has_vme diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h index 74a4433..0fee48e 100644 --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -56,10 +56,7 @@ static inline void __flush_tlb_all(void) static inline void __flush_tlb_one(unsigned long addr) { - if (cpu_has_invlpg) __flush_tlb_single(addr); - else - __flush_tlb(); } #define TLB_FLUSH_ALL -1UL diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 1b7d165..a025d8c 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -753,9 +753,6 @@ static unsigned int __cpuinit amd_size_cache(struct cpuinfo_x86 *c, static void __cpuinit cpu_set_tlb_flushall_shift(struct cpuinfo_x86 *c) { - if (!cpu_has_invlpg) - return; - tlb_flushall_shift = 5; if (c->x86 <= 0x11) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 198e019..fcaabd0 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -612,10 +612,6 @@ static void __cpuinit intel_tlb_lookup(const unsigned char desc) static void __cpuinit intel_tlb_flushall_shift_set(struct cpuinfo_x86 *c) { - if (!cpu_has_invlpg) { - tlb_flushall_shift = -1; - return; - } switch ((c->x86 << 8) + c->x86_model) { case 0x60f: /* original 65 nm celeron/pentium/core2/xeon, "Merom"/"Conroe" */ case 0x616: /* single-core 65 nm celeron/core2solo "Merom-L"/"Conroe-L" */ diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 60f926c..13a6b29 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -104,7 +104,7 @@ static void flush_tlb_func(void *info) return; if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK) { - if (f->flush_end == TLB_FLUSH_ALL || !cpu_has_invlpg) + if (f->flush_end == TLB_FLUSH_ALL) local_flush_tlb(); else if (!f->flush_end) __flush_tlb_single(f->flush_start); @@ -337,10 +337,8 @@ static const struct file_operations fops_tlbflush = { static int __cpuinit create_tlb_flushall_shift(void) { - if (cpu_has_invlpg) { - debugfs_create_file("tlb_flushall_shift", S_IRUSR | S_IWUSR, - arch_debugfs_dir, NULL, &fops_tlbflush); - } + debugfs_create_file("tlb_flushall_shift", S_IRUSR | S_IWUSR, + arch_debugfs_dir, NULL, &fops_tlbflush); return 0; } late_initcall(create_tlb_flushall_shift); |