From: Paolo Bonzini <pbonzini@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: Re: [PATCH 3/8] KVM: Activate fpu on clts
Date: Tue, 02 Feb 2010 09:16:44 +0100 [thread overview]
Message-ID: <4B67DF6C.3000507@redhat.com> (raw)
In-Reply-To: <1264080712-3981-4-git-send-email-avi@redhat.com>
On 01/21/2010 02:31 PM, Avi Kivity wrote:
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index feca59f..09207ba 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -3266,6 +3266,7 @@ int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address)
> int emulate_clts(struct kvm_vcpu *vcpu)
> {
> kvm_x86_ops->set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS));
> + kvm_x86_ops->fpu_activate(vcpu);
> return X86EMUL_CONTINUE;
> }
Can this code be reached if CLTS is executed in real mode? That would
cause a NULL-pointer access on VMX.
Paolo
next prev parent reply other threads:[~2010-02-02 8:40 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-21 13:31 [PATCH 0/8] cr0/cr4/efer/fpu miscellaneous bits Avi Kivity
2010-01-21 13:31 ` [PATCH 1/8] KVM: Allow kvm_load_guest_fpu() even when !vcpu->fpu_active Avi Kivity
2010-01-21 13:31 ` [PATCH 2/8] KVM: Drop kvm_{load,put}_guest_fpu() exports Avi Kivity
2010-01-21 13:31 ` [PATCH 3/8] KVM: Activate fpu on clts Avi Kivity
2010-01-23 18:56 ` Marcelo Tosatti
2010-01-24 7:20 ` Avi Kivity
2010-02-02 8:16 ` Paolo Bonzini [this message]
2010-02-03 10:23 ` Gleb Natapov
2010-02-04 13:05 ` Avi Kivity
2010-02-04 13:11 ` Gleb Natapov
2010-02-04 17:56 ` Avi Kivity
2010-02-07 12:25 ` Avi Kivity
2010-01-21 13:31 ` [PATCH 4/8] KVM: Add a helper for checking if the guest is in protected mode Avi Kivity
2010-01-21 13:31 ` [PATCH 5/8] KVM: Move cr0/cr4/efer related helpers to x86.h Avi Kivity
2010-01-21 13:31 ` [PATCH 6/8] KVM: Rename vcpu->shadow_efer to efer Avi Kivity
2010-01-21 13:31 ` [PATCH 7/8] KVM: Optimize kvm_read_cr[04]_bits() Avi Kivity
2010-02-05 8:26 ` Jan Kiszka
2010-02-07 12:05 ` Avi Kivity
2010-02-07 12:33 ` Jan Kiszka
2010-02-07 12:37 ` Avi Kivity
2010-02-07 13:20 ` Jan Kiszka
2010-01-21 13:31 ` [PATCH 8/8] KVM: trace guest fpu loads and unloads Avi Kivity
2010-01-23 19:02 ` [PATCH 0/8] cr0/cr4/efer/fpu miscellaneous bits Marcelo Tosatti
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