* [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe
@ 2010-08-02 3:35 Avi Kivity
2010-08-02 7:48 ` Paolo Bonzini
0 siblings, 1 reply; 4+ messages in thread
From: Avi Kivity @ 2010-08-02 3:35 UTC (permalink / raw)
To: kvm, Marcelo Tosatti
LMSW is documented not to be able to set cr0.pe; make it so.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index dc1ecff..05f80f7 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3212,7 +3212,7 @@ twobyte_insn:
c->dst.val = ops->get_cr(0, ctxt->vcpu);
break;
case 6: /* lmsw */
- ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0ful) |
+ ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0eul) |
(c->src.val & 0x0f), ctxt->vcpu);
c->dst.type = OP_NONE;
break;
--
1.7.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe
2010-08-02 3:35 [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe Avi Kivity
@ 2010-08-02 7:48 ` Paolo Bonzini
2010-08-02 7:51 ` Avi Kivity
0 siblings, 1 reply; 4+ messages in thread
From: Paolo Bonzini @ 2010-08-02 7:48 UTC (permalink / raw)
To: Avi Kivity; +Cc: kvm, Marcelo Tosatti
On 08/02/2010 05:35 AM, Avi Kivity wrote:
> LMSW is documented not to be able to set cr0.pe; make it so.
The code is correct, but LMSW is documented not to be able to _clear_
cr0.pe. :)
Paolo
> Signed-off-by: Avi Kivity<avi@redhat.com>
> ---
> arch/x86/kvm/emulate.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
> index dc1ecff..05f80f7 100644
> --- a/arch/x86/kvm/emulate.c
> +++ b/arch/x86/kvm/emulate.c
> @@ -3212,7 +3212,7 @@ twobyte_insn:
> c->dst.val = ops->get_cr(0, ctxt->vcpu);
> break;
> case 6: /* lmsw */
> - ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0ful) |
> + ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0eul) |
> (c->src.val & 0x0f), ctxt->vcpu);
> c->dst.type = OP_NONE;
> break;
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe
2010-08-02 7:48 ` Paolo Bonzini
@ 2010-08-02 7:51 ` Avi Kivity
0 siblings, 0 replies; 4+ messages in thread
From: Avi Kivity @ 2010-08-02 7:51 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: kvm, Marcelo Tosatti
On 08/02/2010 10:48 AM, Paolo Bonzini wrote:
> On 08/02/2010 05:35 AM, Avi Kivity wrote:
>> LMSW is documented not to be able to set cr0.pe; make it so.
>
> The code is correct, but LMSW is documented not to be able to _clear_
> cr0.pe. :)
Right, thinko.
--
error compiling committee.c: too many arguments to function
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe
@ 2010-08-01 15:37 Avi Kivity
0 siblings, 0 replies; 4+ messages in thread
From: Avi Kivity @ 2010-08-01 15:37 UTC (permalink / raw)
To: Marcelo Tosatti, kvm
LMSW is documented not to be able to set cr0.pe; make it so.
Signed-off-by: Avi Kivity <avi@redhat.com>
---
arch/x86/kvm/emulate.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index dc1ecff..05f80f7 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -3212,7 +3212,7 @@ twobyte_insn:
c->dst.val = ops->get_cr(0, ctxt->vcpu);
break;
case 6: /* lmsw */
- ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0ful) |
+ ops->set_cr(0, (ops->get_cr(0, ctxt->vcpu) & ~0x0eul) |
(c->src.val & 0x0f), ctxt->vcpu);
c->dst.type = OP_NONE;
break;
--
1.7.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-08-02 7:51 UTC | newest]
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2010-08-02 3:35 [PATCH] KVM: x86 emulator: fix LMSW able to clear cr0.pe Avi Kivity
2010-08-02 7:48 ` Paolo Bonzini
2010-08-02 7:51 ` Avi Kivity
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2010-08-01 15:37 Avi Kivity
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