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 <oliver.upton@linux.dev>

diff --git a/arch/arm64/kvm/hyp/vhe/tlb.c b/arch/arm64/kvm/hyp/vhe/tlb.c
index 46bd43f61d76f5dc1676cfad45a64830e138a526..f3f2e142e4f44581c8f2f3f6d164b36bb2e5e045 100644 (file)
--- 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();