On 2013-02-23 22:35, Jan Kiszka wrote:
> From: Jan Kiszka <jan.kis...@siemens.com>
> 
> Likely a typo, but a fatal one as kvm_set_cr0 performs checks on the
> state transition that may prevent loading L1's cr0.
> 
> Signed-off-by: Jan Kiszka <jan.kis...@siemens.com>
> ---
>  arch/x86/kvm/vmx.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 26d47e9..94f3b66 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -7429,7 +7429,7 @@ static void load_vmcs12_host_state(struct kvm_vcpu 
> *vcpu,
>        * fpu_active (which may have changed).
>        * Note that vmx_set_cr0 refers to efer set above.
>        */
> -     kvm_set_cr0(vcpu, vmcs12->host_cr0);
> +     vmx_set_cr0(vcpu, vmcs12->host_cr0);
>       /*
>        * If we did fpu_activate()/fpu_deactivate() during L2's run, we need
>        * to apply the same changes to L1's vmcs. We just set cr0 correctly,
> 

This one still applies, is necessary for nested unrestricted guest mode,
and I'm still convinced it's an appropriate way to fix the bug. How to
proceed?

Jan


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