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| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-08-22 10:59:01 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-08-22 10:59:01 +0200 |
| commit | 84e6af58707520baf59c1c86c29237419e439afb (patch) | |
| tree | 7895c5efbad165a8424933af8ff93a6d187a3c05 /xen/arch/x86/hvm/irq.c | |
| parent | 375a1035002fb257087756a86e6caeda649fc0f1 (diff) | |
| download | xen-84e6af58707520baf59c1c86c29237419e439afb.tar.gz xen-84e6af58707520baf59c1c86c29237419e439afb.tar.bz2 xen-84e6af58707520baf59c1c86c29237419e439afb.zip | |
Nested VMX: Update APIC-v(RVI/SVI) when vmexit to L1
If enabling APIC-v, all interrupts to L1 are delivered through APIC-v.
But when L2 is running, external interrupt will casue L1 vmexit with
reason external interrupt. Then L1 will pick up the interrupt through
vmcs12. when L1 ack the interrupt, since the APIC-v is enabled when
L1 is running, so APIC-v hardware still will do vEOI updating. The problem
is that the interrupt is delivered not through APIC-v hardware, this means
SVI/RVI/vPPR are not setting, but hardware required them when doing vEOI
updating. The solution is that, when L1 tried to pick up the interrupt
from vmcs12, then hypervisor will help to update the SVI/RVI/vPPR to make
sure the following vEOI updating and vPPR updating corrently.
Also, since interrupt is delivered through vmcs12, so APIC-v hardware will
not cleare vIRR and hypervisor need to clear it before L1 running.
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: "Dong, Eddie" <eddie.dong@intel.com>
Diffstat (limited to 'xen/arch/x86/hvm/irq.c')
| -rw-r--r-- | xen/arch/x86/hvm/irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/irq.c b/xen/arch/x86/hvm/irq.c index 9eae5de21a..6a6fb68eab 100644 --- a/xen/arch/x86/hvm/irq.c +++ b/xen/arch/x86/hvm/irq.c @@ -437,7 +437,7 @@ struct hvm_intack hvm_vcpu_ack_pending_irq( intack.vector = (uint8_t)vector; break; case hvm_intsrc_lapic: - if ( !vlapic_ack_pending_irq(v, intack.vector) ) + if ( !vlapic_ack_pending_irq(v, intack.vector, 0) ) intack = hvm_intack_none; break; case hvm_intsrc_vector: |