[tip:x86/cpu] x86/cpufeature: Remove cpu_has_gbpages

tip-bot for Borislav Petkov
2016-03-31T13:03:31Z

Commit-ID: b8291adc191abec2095f03a130ac91506d345cae
Gitweb: http://git.kernel.org/tip/b8291adc191abec2095f03a130ac91506d345cae
Author: Borislav Petkov <bp@suse.de>
AuthorDate: Tue, 29 Mar 2016 17:41:58 +0200
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Thu, 31 Mar 2016 13:35:08 +0200

x86/cpufeature: Remove cpu_has_gbpages

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1459266123-21878-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/include/asm/cpufeature.h | 1 -
arch/x86/kvm/mmu.c | 3 ++-
arch/x86/mm/hugetlbpage.c | 4 ++--
arch/x86/mm/init.c | 2 +-
arch/x86/mm/ioremap.c | 2 +-
arch/x86/mm/pageattr.c | 2 +-
6 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 3da7aec..693b4aa 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -130,7 +130,6 @@ extern const char * const x86_bug_flags[NBUGINTS*32];
#define cpu_has_avx boot_cpu_has(X86_FEATURE_AVX)
#define cpu_has_avx2 boot_cpu_has(X86_FEATURE_AVX2)
#define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLUSH)
-#define cpu_has_gbpages boot_cpu_has(X86_FEATURE_GBPAGES)
#define cpu_has_pat boot_cpu_has(X86_FEATURE_PAT)
#define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE)
#define cpu_has_xsaves boot_cpu_has(X86_FEATURE_XSAVES)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 70e95d0..bc1e0b6 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3836,7 +3836,8 @@ reset_tdp_shadow_zero_bits_mask(struct kvm_vcpu *vcpu,
__reset_rsvds_bits_mask(vcpu, &context->shadow_zero_check,
boot_cpu_data.x86_phys_bits,
context->shadow_root_level, false,
- cpu_has_gbpages, true, true);
+ boot_cpu_has(X86_FEATURE_GBPAGES),
+ true, true);
else
__reset_rsvds_bits_mask_ept(&context->shadow_zero_check,
boot_cpu_data.x86_phys_bits,
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 740d7ac..14a9505 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -162,7 +162,7 @@ static __init int setup_hugepagesz(char *opt)
unsigned long ps = memparse(opt, &opt);
if (ps == PMD_SIZE) {
hugetlb_add_hstate(PMD_SHIFT - PAGE_SHIFT);
- } else if (ps == PUD_SIZE && cpu_has_gbpages) {
+ } else if (ps == PUD_SIZE && boot_cpu_has(X86_FEATURE_GBPAGES)) {
hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
} else {
printk(KERN_ERR "hugepagesz: Unsupported page size %lu M\n",
@@ -177,7 +177,7 @@ __setup("hugepagesz=", setup_hugepagesz);
static __init int gigantic_pages_init(void)
{
/* With compaction or CMA we can allocate gigantic pages at runtime */
- if (cpu_has_gbpages && !size_to_hstate(1UL << PUD_SHIFT))
+ if (boot_cpu_has(X86_FEATURE_GBPAGES) && !size_to_hstate(1UL << PUD_SHIFT))
hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
return 0;
}
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 9d56f27..14377e9 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -173,7 +173,7 @@ static void __init probe_page_size_mask(void)
__supported_pte_mask &= ~_PAGE_GLOBAL;

/* Enable 1 GB linear kernel mappings if available: */
- if (direct_gbpages && cpu_has_gbpages) {
+ if (direct_gbpages && boot_cpu_has(X86_FEATURE_GBPAGES)) {
printk(KERN_INFO "Using GB pages for direct mapping\n");
page_size_mask |= 1 << PG_LEVEL_1G;
} else {
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 0d8d53d..5a116ac 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -378,7 +378,7 @@ EXPORT_SYMBOL(iounmap);
int __init arch_ioremap_pud_supported(void)
{
#ifdef CONFIG_X86_64
- return cpu_has_gbpages;
+ return boot_cpu_has(X86_FEATURE_GBPAGES);
#else
return 0;
#endif
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 01be9ec..fb20c2e 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -1055,7 +1055,7 @@ static int populate_pud(struct cpa_data *cpa, unsigned long start, pgd_t *pgd,
/*
* Map everything starting from the Gb boundary, possibly with 1G pages
*/
- while (cpu_has_gbpages && end - start >= PUD_SIZE) {
+ while (boot_cpu_has(X86_FEATURE_GBPAGES) && end - start >= PUD_SIZE) {
set_pud(pud, __pud(cpa->pfn << PAGE_SHIFT | _PAGE_PSE |
massage_pgprot(pud_pgprot)));