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    Subject[PATCH 4/13] KVM: vmx: hack set_cr0_no_modeswitch() to actually do modeswitch
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    Date
    From: Markus Rechberger <markus.rechberger@amd.com>
    From: Joerg Roedel <joerg.roedel@amd.com>

    The whole thing is rotten, but this allows vmx to boot with the guest reboot
    fix.

    Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
    Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
    Signed-off-by: Avi Kivity <avi@qumranet.com>

    Index: linux-2.6/drivers/kvm/vmx.c
    ===================================================================
    --- linux-2.6.orig/drivers/kvm/vmx.c
    +++ linux-2.6/drivers/kvm/vmx.c
    @@ -791,6 +791,9 @@ static void vmx_set_cr0(struct kvm_vcpu
    */
    static void vmx_set_cr0_no_modeswitch(struct kvm_vcpu *vcpu, unsigned long cr0)
    {
    + if (!vcpu->rmode.active && !(cr0 & CR0_PE_MASK))
    + enter_rmode(vcpu);
    +
    vcpu->rmode.active = ((cr0 & CR0_PE_MASK) == 0);
    update_exception_bitmap(vcpu);
    vmcs_writel(CR0_READ_SHADOW, cr0);
    -
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