From 19fdfa0d133ae216e9d1c69a8333fe63fcf8e584 Mon Sep 17 00:00:00 2001 From: Mohammed Gamal Date: Sun, 6 Jul 2008 16:51:26 +0300 Subject: [PATCH] KVM: x86 emulator: Fix HLT instruction This patch fixes issue encountered with HLT instruction under FreeDOS's HIMEM XMS Driver. The HLT instruction jumped directly to the done label and skips updating the EIP value, therefore causing the guest to spin endlessly on the same instruction. The patch changes the instruction so that it writes back the updated EIP value. Signed-off-by: Mohammed Gamal Signed-off-by: Avi Kivity --- arch/x86/kvm/x86_emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 18ca25c2d4a4..8bc63f62fbbd 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -1731,7 +1731,7 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) break; case 0xf4: /* hlt */ ctxt->vcpu->arch.halt_request = 1; - goto done; + break; case 0xf5: /* cmc */ /* complement carry flag from eflags reg */ ctxt->eflags ^= EFLG_CF; -- GitLab