* [RHEL 8.2 virt PATCH 1/3] KVM: nVMX: Don't emulate instructions in guest mode
[not found] <20200310141152.29029-1-jmaloy@redhat.com>
@ 2020-03-10 14:11 ` Jon Maloy
2020-03-10 14:37 ` Greg KH
0 siblings, 1 reply; 3+ messages in thread
From: Jon Maloy @ 2020-03-10 14:11 UTC (permalink / raw)
To: jmaloy, rhkernel-list
Cc: Paolo Bonzini, Paul Lai, Vitaly Kuznetsov, stable, Oliver Upton
From: Paolo Bonzini <pbonzini@redhat.com>
vmx_check_intercept is not yet fully implemented. To avoid emulating
instructions disallowed by the L1 hypervisor, refuse to emulate
instructions by default.
Cc: stable@vger.kernel.org
[Made commit, added commit msg - Oliver]
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 07721feee46b4b248402133228235318199b05ec)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
arch/x86/kvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index f6f98f7895bf..5e9c77c818a7 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7199,7 +7199,7 @@ static int vmx_check_intercept(struct kvm_vcpu *vcpu,
}
/* TODO: check more intercepts... */
- return X86EMUL_CONTINUE;
+ return X86EMUL_UNHANDLEABLE;
}
#ifdef CONFIG_X86_64
--
2.18.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [RHEL 8.2 virt PATCH 1/3] KVM: nVMX: Don't emulate instructions in guest mode
2020-03-10 14:11 ` [RHEL 8.2 virt PATCH 1/3] KVM: nVMX: Don't emulate instructions in guest mode Jon Maloy
@ 2020-03-10 14:37 ` Greg KH
0 siblings, 0 replies; 3+ messages in thread
From: Greg KH @ 2020-03-10 14:37 UTC (permalink / raw)
To: Jon Maloy
Cc: rhkernel-list, Paolo Bonzini, Paul Lai, Vitaly Kuznetsov, stable,
Oliver Upton
On Tue, Mar 10, 2020 at 10:11:50AM -0400, Jon Maloy wrote:
> From: Paolo Bonzini <pbonzini@redhat.com>
>
> vmx_check_intercept is not yet fully implemented. To avoid emulating
> instructions disallowed by the L1 hypervisor, refuse to emulate
> instructions by default.
>
> Cc: stable@vger.kernel.org
> [Made commit, added commit msg - Oliver]
> Signed-off-by: Oliver Upton <oupton@google.com>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>
> (cherry picked from commit 07721feee46b4b248402133228235318199b05ec)
> Signed-off-by: Jon Maloy <jmaloy@redhat.com>
> ---
> arch/x86/kvm/vmx/vmx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Please fix your email system to not mail public people internal Red
Hat-specific things :(
^ permalink raw reply [flat|nested] 3+ messages in thread
* [RHEL 8.2 virt PATCH 1/3] KVM: nVMX: Don't emulate instructions in guest mode
[not found] <20200310135743.27633-1-jmaloy@redhat.com>
@ 2020-03-10 13:57 ` Jon Maloy
0 siblings, 0 replies; 3+ messages in thread
From: Jon Maloy @ 2020-03-10 13:57 UTC (permalink / raw)
To: jmaloy; +Cc: Paolo Bonzini, stable, Oliver Upton
From: Paolo Bonzini <pbonzini@redhat.com>
vmx_check_intercept is not yet fully implemented. To avoid emulating
instructions disallowed by the L1 hypervisor, refuse to emulate
instructions by default.
Cc: stable@vger.kernel.org
[Made commit, added commit msg - Oliver]
Signed-off-by: Oliver Upton <oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 07721feee46b4b248402133228235318199b05ec)
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
---
arch/x86/kvm/vmx/vmx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index f6f98f7895bf..5e9c77c818a7 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7199,7 +7199,7 @@ static int vmx_check_intercept(struct kvm_vcpu *vcpu,
}
/* TODO: check more intercepts... */
- return X86EMUL_CONTINUE;
+ return X86EMUL_UNHANDLEABLE;
}
#ifdef CONFIG_X86_64
--
2.18.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-03-10 14:37 UTC | newest]
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[not found] <20200310141152.29029-1-jmaloy@redhat.com>
2020-03-10 14:11 ` [RHEL 8.2 virt PATCH 1/3] KVM: nVMX: Don't emulate instructions in guest mode Jon Maloy
2020-03-10 14:37 ` Greg KH
[not found] <20200310135743.27633-1-jmaloy@redhat.com>
2020-03-10 13:57 ` Jon Maloy
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