Messages in this thread Patch in this message | | | From | "Kirill A. Shutemov" <> | Subject | [PATCH] x86/mm: Avoid paravirtualization calls in native_set_p4d() | Date | Wed, 28 Feb 2018 18:00:22 +0300 |
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p4d_val() and pgd_val() are paravirtualized and we should avoid using them in native_set_p4d().
Let's replace them with native_p4d_val() and native_pgd_val().
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Fixes: 91f606a8fa68 ("x86/mm: Replace compile-time checks for 5-level paging with runtime-time checks") --- arch/x86/include/asm/pgtable_64.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 81dda8d1d0bd..163e01a0631d 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -224,9 +224,9 @@ static inline void native_set_p4d(p4d_t *p4dp, p4d_t p4d) return; } - pgd = native_make_pgd(p4d_val(p4d)); + pgd = native_make_pgd(native_p4d_val(p4d)); pgd = pti_set_user_pgd((pgd_t *)p4dp, pgd); - *p4dp = native_make_p4d(pgd_val(pgd)); + *p4dp = native_make_p4d(native_pgd_val(pgd)); } static inline void native_p4d_clear(p4d_t *p4d) -- 2.16.1
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