diff options
| author | Quentin Perret | 2020-09-11 14:25:22 +0100 |
|---|---|---|
| committer | Marc Zyngier | 2020-09-11 15:51:14 +0100 |
| commit | 93c66b40d728178722706a306df15ce92c819cd6 (patch) | |
| tree | 20511d096f6d015be2bb03e4a67c0a3a9286d3df /arch/arm64/include/asm | |
| parent | cc38d61cace392a5f064f2981ce6009bb158de21 (diff) | |
KVM: arm64: Add support for stage-2 cache flushing in generic page-table
Add support for cache flushing a range of the stage-2 address space to
the generic page-table code.
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200911132529.19844-15-will@kernel.org
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/kvm_pgtable.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h index 5ae6006a6098..77c027456c61 100644 --- a/arch/arm64/include/asm/kvm_pgtable.h +++ b/arch/arm64/include/asm/kvm_pgtable.h @@ -249,6 +249,21 @@ kvm_pte_t kvm_pgtable_stage2_mkold(struct kvm_pgtable *pgt, u64 addr); bool kvm_pgtable_stage2_is_young(struct kvm_pgtable *pgt, u64 addr); /** + * kvm_pgtable_stage2_flush_range() - Clean and invalidate data cache to Point + * of Coherency for guest stage-2 address + * range. + * @pgt: Page-table structure initialised by kvm_pgtable_stage2_init(). + * @addr: Intermediate physical address from which to flush. + * @size: Size of the range. + * + * The offset of @addr within a page is ignored and @size is rounded-up to + * the next page boundary. + * + * Return: 0 on success, negative error code on failure. + */ +int kvm_pgtable_stage2_flush(struct kvm_pgtable *pgt, u64 addr, u64 size); + +/** * kvm_pgtable_walk() - Walk a page-table. * @pgt: Page-table structure initialised by kvm_pgtable_*_init(). * @addr: Input address for the start of the walk. |