[PATCH v3 15/21] KVM: arm64: Convert memslot cache-flushing code to generic page-table API

Will Deacon
2020-08-25T09:45:25Z

From: Quentin Perret <qperret@google.com>

Convert stage2_flush_memslot() to call the kvm_pgtable_stage2_flush()
function of the generic page-table code instead of walking the page-table
directly.

Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
---
arch/arm64/kvm/mmu.c | 13 +------------
1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index ca2c37c91e0b..d4b0716a6ab4 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -455,21 +455,10 @@ static void stage2_flush_p4ds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
static void stage2_flush_memslot(struct kvm *kvm,
struct kvm_memory_slot *memslot)
{
- struct kvm_s2_mmu *mmu = &kvm->arch.mmu;
phys_addr_t addr = memslot->base_gfn << PAGE_SHIFT;
phys_addr_t end = addr + PAGE_SIZE * memslot->npages;
- phys_addr_t next;
- pgd_t *pgd;
-
- pgd = mmu->pgd + stage2_pgd_index(kvm, addr);
- do {
- next = stage2_pgd_addr_end(kvm, addr, end);
- if (!stage2_pgd_none(kvm, *pgd))
- stage2_flush_p4ds(mmu, pgd, addr, next);

- if (next != end)
- cond_resched_lock(&kvm->mmu_lock);
- } while (pgd++, addr = next, addr != end);
+ stage2_apply_range_resched(kvm, addr, end, kvm_pgtable_stage2_flush);
}

/**
--
2.28.0.297.g1956fa8f8d-goog