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| author | Alex Williamson <alex.williamson@redhat.com> | 2021-02-22 20:14:24 +0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2021-02-22 20:14:24 +0300 |
| commit | 72d6e4871f0457dc9e498f8437ea344ee6b78075 (patch) | |
| tree | 44a6975d7f0818086e34b8e84e3164527fac36f4 /arch/arm64/include/asm/pgtable.h | |
| parent | b9abef43a08ef7faa33477cccb0c08c64eb2b8bf (diff) | |
| parent | 3e10585335b7967326ca7b4118cada0d2d00a2ab (diff) | |
| download | linux-72d6e4871f0457dc9e498f8437ea344ee6b78075.tar.xz | |
Merge commit '3e10585335b7967326ca7b4118cada0d2d00a2ab' into v5.12/vfio/next
Update to new follow_pte() definition
Diffstat (limited to 'arch/arm64/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 501562793ce2..e17b96d0e4b5 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -980,7 +980,17 @@ static inline bool arch_faults_on_old_pte(void) return !cpu_has_hw_af(); } -#define arch_faults_on_old_pte arch_faults_on_old_pte +#define arch_faults_on_old_pte arch_faults_on_old_pte + +/* + * Experimentally, it's cheap to set the access flag in hardware and we + * benefit from prefaulting mappings as 'old' to start with. + */ +static inline bool arch_wants_old_prefaulted_pte(void) +{ + return !arch_faults_on_old_pte(); +} +#define arch_wants_old_prefaulted_pte arch_wants_old_prefaulted_pte #endif /* !__ASSEMBLY__ */ |