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Message-Id: <1216123958-10717-14-git-send-email-avi@qumranet.com> Date: Tue, 15 Jul 2008 15:12:32 +0300 From: Avi Kivity <avi@...ranet.com> To: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Mohammed Gamal <m.gamal005@...il.com> Subject: [PATCH 13/19] KVM: x86 emulator: Fix HLT instruction From: Mohammed Gamal <m.gamal005@...il.com> 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 <m.gamal005@...il.com> Signed-off-by: Avi Kivity <avi@...ranet.com> --- arch/x86/kvm/x86_emulate.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c index 18ca25c..8bc63f6 100644 --- a/arch/x86/kvm/x86_emulate.c +++ b/arch/x86/kvm/x86_emulate.c @@ -1731,7 +1731,7 @@ special_insn: 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; -- 1.5.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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