Commit-ID: 28e3ace70c3d2ea47a62dffe046011d1b74ee839 Gitweb: https://git.kernel.org/tip/28e3ace70c3d2ea47a62dffe046011d1b74ee839 Author: Borislav Petkov <b...@suse.de> AuthorDate: Fri, 29 Mar 2019 20:00:38 +0100 Committer: Borislav Petkov <b...@suse.de> CommitDate: Mon, 8 Apr 2019 12:14:16 +0200
x86/mm: Convert some slow-path static_cpu_has() callers to boot_cpu_has() Using static_cpu_has() is pointless on those paths, convert them to the boot_cpu_has() variant. No functional changes. Signed-off-by: Borislav Petkov <b...@suse.de> Cc: Andy Lutomirski <l...@kernel.org> Cc: Dave Hansen <dave.han...@linux.intel.com> Cc: "H. Peter Anvin" <h...@zytor.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: x...@kernel.org Link: https://lkml.kernel.org/r/20190330112022.28888-5...@alien8.de --- arch/x86/mm/dump_pagetables.c | 4 ++-- arch/x86/mm/pgtable.c | 4 ++-- arch/x86/mm/pti.c | 2 +- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/mm/dump_pagetables.c b/arch/x86/mm/dump_pagetables.c index ee8f8ab46941..7b71ac15b235 100644 --- a/arch/x86/mm/dump_pagetables.c +++ b/arch/x86/mm/dump_pagetables.c @@ -577,7 +577,7 @@ void ptdump_walk_pgd_level(struct seq_file *m, pgd_t *pgd) void ptdump_walk_pgd_level_debugfs(struct seq_file *m, pgd_t *pgd, bool user) { #ifdef CONFIG_PAGE_TABLE_ISOLATION - if (user && static_cpu_has(X86_FEATURE_PTI)) + if (user && boot_cpu_has(X86_FEATURE_PTI)) pgd = kernel_to_user_pgdp(pgd); #endif ptdump_walk_pgd_level_core(m, pgd, false, false); @@ -590,7 +590,7 @@ void ptdump_walk_user_pgd_level_checkwx(void) pgd_t *pgd = INIT_PGD; if (!(__supported_pte_mask & _PAGE_NX) || - !static_cpu_has(X86_FEATURE_PTI)) + !boot_cpu_has(X86_FEATURE_PTI)) return; pr_info("x86/mm: Checking user space page tables\n"); diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 7bd01709a091..3dbf440d4114 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -190,7 +190,7 @@ static void pgd_dtor(pgd_t *pgd) * when PTI is enabled. We need them to map the per-process LDT into the * user-space page-table. */ -#define PREALLOCATED_USER_PMDS (static_cpu_has(X86_FEATURE_PTI) ? \ +#define PREALLOCATED_USER_PMDS (boot_cpu_has(X86_FEATURE_PTI) ? \ KERNEL_PGD_PTRS : 0) #define MAX_PREALLOCATED_USER_PMDS KERNEL_PGD_PTRS @@ -292,7 +292,7 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp) #ifdef CONFIG_PAGE_TABLE_ISOLATION - if (!static_cpu_has(X86_FEATURE_PTI)) + if (!boot_cpu_has(X86_FEATURE_PTI)) return; pgdp = kernel_to_user_pgdp(pgdp); diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c index 4fee5c3003ed..8c9a54ebda60 100644 --- a/arch/x86/mm/pti.c +++ b/arch/x86/mm/pti.c @@ -626,7 +626,7 @@ void pti_set_kernel_image_nonglobal(void) */ void __init pti_init(void) { - if (!static_cpu_has(X86_FEATURE_PTI)) + if (!boot_cpu_has(X86_FEATURE_PTI)) return; pr_info("enabled\n");
