[Xen-devel][PATCH]Fix a error to boot 32bit vista

["Xin, Xiaohui" <xiaohui.xin@xxxxxxxxx>]

This patch fixes an error to boot 32bit vista. The shadow code uses hvm_get_guest_ctrl_reg(v, 4) to test whether the PAE enabled or not.

But it is not always right. In some cases, when hypervisor calls hvm_get_guest_ctrl_reg(v, 4) between vmxassist_invoke and vmxassist_restore,

the value of CR4 is not always right. And then the guest will get wrong shadow modes.

The patch uses the d->arch.hvm_vmx.cpu_state to test if the PAE is enabled.

 

Signed-off-by: Xiaohui Xin <xiaohui.xin@xxxxxxxxx>

 

Attachment: 0921-2.diff
Description: 0921-2.diff

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