File 5215d135-Nested-VMX-Clear-APIC-v-control-bit-in... of Package xen

Overview Repositories Revisions Requests Users Attributes Meta

File 5215d135-Nested-VMX-Clear-APIC-v-control-bit-in-vmcs02.patch of Package xen (Revision 82ce8e4a87bd483ad42ae7f82d508a2c)

Currently displaying revision 82ce8e4a87bd483ad42ae7f82d508a2c , Show latest

# Commit 375a1035002fb257087756a86e6caeda649fc0f1
# Date 2013-08-22 10:52:05 +0200
# Author Yang Zhang <yang.z.zhang@Intel.com>
# Committer Jan Beulich <jbeulich@suse.com>
Nested VMX: Clear APIC-v control bit in vmcs02

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

Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: "Dong, Eddie" <eddie.dong@intel.com>

--- 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(
     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(stru
     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);
 }

Places

File 5215d135-Nested-VMX-Clear-APIC-v-control-bit-in-vmcs02.patch of Package xen (Revision 82ce8e4a87bd483ad42ae7f82d508a2c)

Places