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KVM: VMX: Fix EPT with WP bit change during paging

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QNX update WP bit when paging enabled, which is not covered yet. This one fix
QNX boot with EPT.

Cc: stable@kernel.org
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Sheng Yang 2009-08-19 09:52:18 +08:00 committed by Avi Kivity
parent d9048d3278
commit 95eb84a758
1 changed files with 3 additions and 3 deletions
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6
arch/x86/kvm/vmx.c
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@ -1642,7 +1642,6 @@ static void ept_update_paging_mode_cr0(unsigned long *hw_cr0,
CPU_BASED_CR3_STORE_EXITING));
vcpu->arch.cr0 = cr0;
vmx_set_cr4(vcpu, vcpu->arch.cr4);
*hw_cr0 &= ~X86_CR0_WP;
} else if (!is_paging(vcpu)) {
/* From nonpaging to paging */
vmcs_write32(CPU_BASED_VM_EXEC_CONTROL,
@ -1651,9 +1650,10 @@ static void ept_update_paging_mode_cr0(unsigned long *hw_cr0,
CPU_BASED_CR3_STORE_EXITING));
vcpu->arch.cr0 = cr0;
vmx_set_cr4(vcpu, vcpu->arch.cr4);
if (!(vcpu->arch.cr0 & X86_CR0_WP))
*hw_cr0 &= ~X86_CR0_WP;
}
if (!(cr0 & X86_CR0_WP))
*hw_cr0 &= ~X86_CR0_WP;
}
static void ept_update_paging_mode_cr4(unsigned long *hw_cr4,