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Message-ID: <1567066988-23376-3-git-send-email-jan.dakinevich@virtuozzo.com>
Date: Thu, 29 Aug 2019 08:23:20 +0000
From: Jan Dakinevich <jan.dakinevich@...tuozzo.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC: Jan Dakinevich <jan.dakinevich@...tuozzo.com>,
Denis Lunev <den@...tuozzo.com>,
Roman Kagan <rkagan@...tuozzo.com>,
Denis Plotnikov <dplotnikov@...tuozzo.com>,
Paolo Bonzini <pbonzini@...hat.com>,
Radim Krčmář <rkrcmar@...hat.com>,
Sean Christopherson <sean.j.christopherson@...el.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Jim Mattson <jmattson@...gle.com>,
Joerg Roedel <joro@...tes.org>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
"x86@...nel.org" <x86@...nel.org>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: [PATCH v3 2/2] KVM: x86: set ctxt->have_exception in
x86_decode_insn()
x86_emulate_instruction() takes into account ctxt->have_exception flag
during instruction decoding, but in practice this flag is never set in
x86_decode_insn().
Fixes: 6ea6e84 ("KVM: x86: inject exceptions produced by x86_decode_insn")
Cc: Denis Lunev <den@...tuozzo.com>
Cc: Roman Kagan <rkagan@...tuozzo.com>
Cc: Denis Plotnikov <dplotnikov@...tuozzo.com>
Signed-off-by: Jan Dakinevich <jan.dakinevich@...tuozzo.com>
---
arch/x86/kvm/emulate.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index bef3c3c..698efb8 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -5416,6 +5416,8 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
ctxt->memopp->addr.mem.ea + ctxt->_eip);
done:
+ if (rc == X86EMUL_PROPAGATE_FAULT)
+ ctxt->have_exception = true;
return (rc != X86EMUL_CONTINUE) ? EMULATION_FAILED : EMULATION_OK;
}
--
2.1.4
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