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[Xen-devel] Why CR0.WP is always set in HVM domain

In "arch/x86/hvm/vmx/vmx.c", vmx_update_guest_cr(), the CR0.WP is always
set as following code:
        v->arch.hvm_vcpu.hw_cr[0] =
            v->arch.hvm_vcpu.guest_cr[0] |
            X86_CR0_PE | X86_CR0_NE | X86_CR0_PG | X86_CR0_WP;

I'm wondering are there any special reason for this? I try to check
shadow code and didn't find any clue.
Can anyone give me some hints?

Yunhong Jiang

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