From 55e858b75808347378e5117c3c2339f46cc03575 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Sun, 11 Jan 2015 14:10:10 +0100 Subject: [PATCH] arm64: KVM: Fix TLB invalidation by IPA/VMID It took about two years for someone to notice that the IPA passed to TLBI IPAS2E1IS must be shifted by 12 bits. Clearly our reviewing is not as good as it should be... Paper bag time for me. Reported-by: Mario Smarduch Tested-by: Mario Smarduch Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall Signed-off-by: Paolo Bonzini --- arch/arm64/kvm/hyp.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/kvm/hyp.S b/arch/arm64/kvm/hyp.S index fbe909fb0a1a..c3ca89c27c6b 100644 --- a/arch/arm64/kvm/hyp.S +++ b/arch/arm64/kvm/hyp.S @@ -1014,6 +1014,7 @@ ENTRY(__kvm_tlb_flush_vmid_ipa) * Instead, we invalidate Stage-2 for this IPA, and the * whole of Stage-1. Weep... */ + lsr x1, x1, #12 tlbi ipas2e1is, x1 /* * We have to ensure completion of the invalidation at Stage-2, -- 2.20.1