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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 11/16] x86: don't set sysenter_entry in vmcs when !CONFIG_PV
The symbol will not be available when PV is disabled.
Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
v2: new
---
xen/arch/x86/hvm/vmx/vmcs.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/xen/arch/x86/hvm/vmx/vmcs.c b/xen/arch/x86/hvm/vmx/vmcs.c
index d9747b4..282677a 100644
--- a/xen/arch/x86/hvm/vmx/vmcs.c
+++ b/xen/arch/x86/hvm/vmx/vmcs.c
@@ -1159,9 +1159,16 @@ static int construct_vmcs(struct vcpu *v)
__vmwrite(HOST_CS_SELECTOR, __HYPERVISOR_CS);
__vmwrite(HOST_RIP, (unsigned long)vmx_asm_vmexit_handler);
+#ifdef CONFIG_PV
/* Host SYSENTER CS:RIP. */
__vmwrite(HOST_SYSENTER_CS, __HYPERVISOR_CS);
__vmwrite(HOST_SYSENTER_EIP, (unsigned long)sysenter_entry);
+#else
+ /*
+ * Should something be put here for debugging purpose? We never
+ * set it up in the first place.
+ */
+#endif
/* MSR intercepts. */
__vmwrite(VM_EXIT_MSR_LOAD_COUNT, 0);
--
git-series 0.9.1
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