30 lines
1.1 KiB
Diff
30 lines
1.1 KiB
Diff
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# HG changeset patch
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# User Keir Fraser <keir@xen.org>
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# Date 1292954974 0
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# Node ID b5418c045d029e8bf5eadfd4e1ef0b1822da7186
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# Parent ff1b80ccecd9ed049cc694ab117100e83eab179f
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x86 hvm ept: Remove EPT guest linear address validation
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For EPT violation resulting from an attempt to load the guest PDPTEs
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as part of the execution of the MOV CR instruction, the EPT_GLA_VALID
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is not valid. This situation should not happen in most situation,
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since we always populate guest memory. But this is not ture for PAE
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guest under the PoD/Page sharing situation. In that situation, a page
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pointed by CR3 may be un-populated, and we need handle it in such
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situation.
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Signed-off-by: Jiang, Yunhong <yunhong.jiang@intel.com>
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--- a/xen/arch/x86/hvm/vmx/vmx.c
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+++ b/xen/arch/x86/hvm/vmx/vmx.c
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@@ -2129,8 +2129,7 @@ static void ept_handle_violation(unsigne
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__trace_var(TRC_HVM_NPF, 0, sizeof(_d), (unsigned char *)&_d);
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}
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- if ( (qualification & EPT_GLA_VALID) &&
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- hvm_hap_nested_page_fault(gfn) )
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+ if ( hvm_hap_nested_page_fault(gfn) )
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return;
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/* Everything else is an error. */
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