Commit 76259cca authored by Oliver Upton's avatar Oliver Upton
Browse files

KVM: arm64: Return EAGAIN for invalid PTE in attr walker 

Return EAGAIN for invalid PTEs in the attr walker, signaling to the
caller that any serialization and/or invalidation can be elided.

Link: https://lore.kernel.org/r/20221202185156.696189-4-oliver.upton@linux.dev


Signed-off-by: default avatarOliver Upton <oliver.upton@linux.dev>
parent ddcadb29

arch/arm64/kvm/hyp/pgtable.c

+1 −1
Original line number Diff line number Diff line
@@ -1048,7 +1048,7 @@ static int stage2_attr_walker(const struct kvm_pgtable_visit_ctx *ctx, 
	struct kvm_pgtable_mm_ops *mm_ops = ctx->mm_ops;



	if (!kvm_pte_valid(ctx->old))

		return 0;

		return -EAGAIN;



	data->level = ctx->level;

	data->pte = pte;