From 38ce26bf26666779565c2770e7ef36c02e0212d7 Mon Sep 17 00:00:00 2001 From: Oliver Upton Date: Wed, 18 Oct 2023 23:32:08 +0000 Subject: [PATCH] KVM: arm64: Don't zero VTTBR in __tlb_switch_to_host() HCR_EL2.TGE=0 is sufficient to disable stage-2 translation, so there's no need to explicitly zero VTTBR_EL2. Link: https://lore.kernel.org/r/20231018233212.2888027-2-oliver.upton@linux.dev Signed-off-by: Oliver Upton --- arch/arm64/kvm/hyp/vhe/tlb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/vhe/tlb.c b/arch/arm64/kvm/hyp/vhe/tlb.c index 46bd43f61d76f..f3f2e142e4f44 100644 --- a/arch/arm64/kvm/hyp/vhe/tlb.c +++ b/arch/arm64/kvm/hyp/vhe/tlb.c @@ -66,7 +66,6 @@ static void __tlb_switch_to_host(struct tlb_inv_context *cxt) * We're done with the TLB operation, let's restore the host's * view of HCR_EL2. */ - write_sysreg(0, vttbr_el2); write_sysreg(HCR_HOST_VHE_FLAGS, hcr_el2); isb();