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| author | Oliver Upton <oliver.upton@linux.dev> | 2023-02-13 22:33:10 +0000 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2023-02-13 22:33:10 +0000 |
| commit | 52b603628a2c06be38648aa025daa81e4355a7fc (patch) | |
| tree | cdaf10e6f49c254f45be23e0b7888c114cad1972 /arch/arm64/include/asm | |
| parent | e8789ab7047a824fa415948d511634fea0c3aea3 (diff) | |
| parent | 1dfc3e905089a0bcada268fb5691a605655e0319 (diff) | |
| download | linux-stable-52b603628a2c06be38648aa025daa81e4355a7fc.tar.gz linux-stable-52b603628a2c06be38648aa025daa81e4355a7fc.tar.bz2 linux-stable-52b603628a2c06be38648aa025daa81e4355a7fc.zip | |
Merge branch kvm-arm64/parallel-access-faults into kvmarm/next
* kvm-arm64/parallel-access-faults:
: Parallel stage-2 access fault handling
:
: The parallel faults changes that went in to 6.2 covered most stage-2
: aborts, with the exception of stage-2 access faults. Building on top of
: the new infrastructure, this series adds support for handling access
: faults (i.e. updating the access flag) in parallel.
:
: This is expected to provide a performance uplift for cores that do not
: implement FEAT_HAFDBS, such as those from the fruit company.
KVM: arm64: Condition HW AF updates on config option
KVM: arm64: Handle access faults behind the read lock
KVM: arm64: Don't serialize if the access flag isn't set
KVM: arm64: Return EAGAIN for invalid PTE in attr walker
KVM: arm64: Ignore EAGAIN for walks outside of a fault
KVM: arm64: Use KVM's pte type/helpers in handle_access_fault()
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/kvm_pgtable.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index 63f81b27a4e3..4cd6762bda80 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -71,6 +71,11 @@ static inline kvm_pte_t kvm_phys_to_pte(u64 pa) return pte; } +static inline kvm_pfn_t kvm_pte_to_pfn(kvm_pte_t pte) +{ + return __phys_to_pfn(kvm_pte_to_phys(pte)); +} + static inline u64 kvm_granule_shift(u32 level) { /* Assumes KVM_PGTABLE_MAX_LEVELS is 4 */ @@ -188,12 +193,15 @@ typedef bool (*kvm_pgtable_force_pte_cb_t)(u64 addr, u64 end, * children. * @KVM_PGTABLE_WALK_SHARED: Indicates the page-tables may be shared * with other software walkers. + * @KVM_PGTABLE_WALK_HANDLE_FAULT: Indicates the page-table walk was + * invoked from a fault handler. */ enum kvm_pgtable_walk_flags { KVM_PGTABLE_WALK_LEAF = BIT(0), KVM_PGTABLE_WALK_TABLE_PRE = BIT(1), KVM_PGTABLE_WALK_TABLE_POST = BIT(2), KVM_PGTABLE_WALK_SHARED = BIT(3), + KVM_PGTABLE_WALK_HANDLE_FAULT = BIT(4), }; struct kvm_pgtable_visit_ctx { |