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KVM: VMX: remove setting of shadow_base_ptes for EPT 

The EPT present/writable bits use the same position as normal
pagetable bits.

Since direct_map passes ACC_ALL to mmu_set_spte, thus always setting
the writable bit on sptes, use the generic PT_PRESENT shadow_base_pte.

Also pass present/writable error code information from EPT violation
to generic pagefault handler.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2010-10-22 14:18:15 -02:00 committed by Avi Kivity
parent 83bcacb1a5
commit ff1fcb9ebd
1 changed files with 1 additions and 3 deletions
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4
arch/x86/kvm/vmx.c
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@ -3476,7 +3476,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu)
gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
trace_kvm_page_fault(gpa, exit_qualification);
return kvm_mmu_page_fault(vcpu, gpa & PAGE_MASK, 0);
return kvm_mmu_page_fault(vcpu, gpa, exit_qualification & 0x3);
}
static u64 ept_rsvd_mask(u64 spte, int level)
@ -4409,8 +4409,6 @@ static int __init vmx_init(void)
if (enable_ept) {
bypass_guest_pf = 0;
kvm_mmu_set_base_ptes(VMX_EPT_READABLE_MASK |
VMX_EPT_WRITABLE_MASK);
kvm_mmu_set_mask_ptes(0ull, 0ull, 0ull, 0ull,
VMX_EPT_EXECUTABLE_MASK);
kvm_enable_tdp();