From: Nadav Amit <namit@cs.technion.ac.il>
To: mtosatti@redhat.com, pbonzini@redhat.com, hpa@zytor.com
Cc: gleb@kernel.org, tglx@linutronix.de, mingo@redhat.com,
x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Nadav Amit <namit@cs.technion.ac.il>
Subject: [PATCH 2/5] KVM: vmx: handle_dr does not handle RSP correctly
Date: Wed, 7 May 2014 15:32:49 +0300 [thread overview]
Message-ID: <1399465972-4026-3-git-send-email-namit@cs.technion.ac.il> (raw)
In-Reply-To: <1399465972-4026-1-git-send-email-namit@cs.technion.ac.il>
The RSP register is not automatically cached, causing mov DR instruction with
RSP to fail. Instead the regular register accessing interface should be used.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
---
arch/x86/kvm/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 72b8012..0e2793f 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5142,7 +5142,7 @@ static int handle_dr(struct kvm_vcpu *vcpu)
return 1;
kvm_register_write(vcpu, reg, val);
} else
- if (kvm_set_dr(vcpu, dr, vcpu->arch.regs[reg]))
+ if (kvm_set_dr(vcpu, dr, kvm_register_read(vcpu, reg)))
return 1;
skip_emulated_instruction(vcpu);
--
1.9.1
next prev parent reply other threads:[~2014-05-07 12:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-07 12:32 [PATCH 0/5] KVM: x86: Fix exit handler and emulation bugs Nadav Amit
2014-05-07 12:32 ` [PATCH 1/5] KVM: x86: Emulator does not calculate address correctly Nadav Amit
2014-05-07 13:57 ` Paolo Bonzini
2014-05-07 15:21 ` Nadav Amit
2014-05-07 12:32 ` Nadav Amit [this message]
2014-05-07 12:32 ` [PATCH 3/5] KVM: x86: Mark bit 7 in long-mode PDPTE according to 1GB pages support Nadav Amit
2014-05-07 12:32 ` [PATCH 4/5] KVM: x86: Wrong register masking in 64-bit mode Nadav Amit
2014-05-07 14:50 ` Bandan Das
2014-05-07 15:24 ` Paolo Bonzini
2014-05-07 16:11 ` Nadav Amit
2014-05-07 15:52 ` Paolo Bonzini
2014-05-08 12:27 ` Nadav Amit
2014-05-07 12:32 ` [PATCH 5/5] KVM: x86: Fix wrong masking on relative jump/call Nadav Amit
2014-05-07 14:43 ` Bandan Das
2014-05-07 15:57 ` Nadav Amit
2014-05-07 15:59 ` Paolo Bonzini
2014-05-07 16:00 ` [PATCH 0/5] KVM: x86: Fix exit handler and emulation bugs Paolo Bonzini
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