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| author | Juergen Gross <jgross@suse.com> | 2020-08-15 12:06:41 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-08-15 13:52:12 +0200 |
| commit | 7c9f80cb76ec9f14c3b25509168b1a2f7942e418 (patch) | |
| tree | afd8e0afa227d9d95aa8a290382d687701f3a385 /arch/x86 | |
| parent | x86/paravirt: Remove set_pte_at() pv-op (diff) | |
| download | linux-7c9f80cb76ec9f14c3b25509168b1a2f7942e418.tar.xz linux-7c9f80cb76ec9f14c3b25509168b1a2f7942e418.zip | |
x86/paravirt: Avoid needless paravirt step clearing page table entries
pte_clear() et al are based on two paravirt steps today: one step to
create a page table entry with all zeroes, and one step to write this
entry value.
Drop the first step as it is completely useless.
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200815100641.26362-7-jgross@suse.com
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/paravirt.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index f0464b88ea1e..d25cc6830e89 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -448,7 +448,7 @@ static inline pudval_t pud_val(pud_t pud) static inline void pud_clear(pud_t *pudp) { - set_pud(pudp, __pud(0)); + set_pud(pudp, native_make_pud(0)); } static inline void set_p4d(p4d_t *p4dp, p4d_t p4d) @@ -485,15 +485,15 @@ static inline void __set_pgd(pgd_t *pgdp, pgd_t pgd) } while (0) #define pgd_clear(pgdp) do { \ - if (pgtable_l5_enabled()) \ - set_pgd(pgdp, __pgd(0)); \ + if (pgtable_l5_enabled()) \ + set_pgd(pgdp, native_make_pgd(0)); \ } while (0) #endif /* CONFIG_PGTABLE_LEVELS == 5 */ static inline void p4d_clear(p4d_t *p4dp) { - set_p4d(p4dp, __p4d(0)); + set_p4d(p4dp, native_make_p4d(0)); } static inline void set_pte_atomic(pte_t *ptep, pte_t pte) @@ -504,12 +504,12 @@ static inline void set_pte_atomic(pte_t *ptep, pte_t pte) static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - set_pte(ptep, __pte(0)); + set_pte(ptep, native_make_pte(0)); } static inline void pmd_clear(pmd_t *pmdp) { - set_pmd(pmdp, __pmd(0)); + set_pmd(pmdp, native_make_pmd(0)); } #define __HAVE_ARCH_START_CONTEXT_SWITCH |