[Xen-devel] [PATCH v3 3/4] Nested VMX: Clear APIC-v control bit in vmcs02

[Yang Zhang <yang.z.zhang@xxxxxxxxx>]

From: Yang Zhang <yang.z.zhang@xxxxxxxxx>

There is no vAPIC-v supporting, so mask APIC-v control bit when
constructing vmcs02.

Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
---
 xen/arch/x86/hvm/vmx/vvmx.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
index 5dfbc54..4792019 100644
--- a/xen/arch/x86/hvm/vmx/vvmx.c
+++ b/xen/arch/x86/hvm/vmx/vvmx.c
@@ -613,8 +613,15 @@ void nvmx_update_secondary_exec_control(struct vcpu *v,
     u32 shadow_cntrl;
     struct nestedvcpu *nvcpu = &vcpu_nestedhvm(v);
     struct nestedvmx *nvmx = &vcpu_2_nvmx(v);
+    u32 apicv_bit = SECONDARY_EXEC_APIC_REGISTER_VIRT |
+                    SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY;
 
+    host_cntrl &= ~apicv_bit;
     shadow_cntrl = __get_vvmcs(nvcpu->nv_vvmcx, SECONDARY_VM_EXEC_CONTROL);
+
+    /* No vAPIC-v support, so it shouldn't be set in vmcs12. */
+    ASSERT( !(shadow_cntrl & apicv_bit) );
+
     nvmx->ept.enabled = !!(shadow_cntrl & SECONDARY_EXEC_ENABLE_EPT);
     shadow_cntrl |= host_cntrl;
     __vmwrite(SECONDARY_VM_EXEC_CONTROL, shadow_cntrl);
@@ -625,7 +632,12 @@ static void nvmx_update_pin_control(struct vcpu *v, 
unsigned long host_cntrl)
     u32 shadow_cntrl;
     struct nestedvcpu *nvcpu = &vcpu_nestedhvm(v);
 
+    host_cntrl &= ~PIN_BASED_POSTED_INTERRUPT;
     shadow_cntrl = __get_vvmcs(nvcpu->nv_vvmcx, PIN_BASED_VM_EXEC_CONTROL);
+
+    /* No vAPIC-v support, so it shouldn't be set in vmcs12. */
+    ASSERT( !(shadow_cntrl & PIN_BASED_POSTED_INTERRUPT) );
+
     shadow_cntrl |= host_cntrl;
     __vmwrite(PIN_BASED_VM_EXEC_CONTROL, shadow_cntrl);
 }
-- 
1.7.1


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