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author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-08-22 10:50:13 +0200 |
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committer | Jan Beulich <jbeulich@suse.com> | 2013-08-22 10:50:13 +0200 |
commit | b35d0a26983843c092bfa353fd6b9aa8c3bf4886 (patch) | |
tree | 24a69d20c4f69e5b60621ec201e8152d47ccc0e9 /xen/arch/x86/hvm/vlapic.c | |
parent | 7fb5c6b9ef22915e3fcac95cd44857f4457ba783 (diff) | |
download | xen-b35d0a26983843c092bfa353fd6b9aa8c3bf4886.tar.gz xen-b35d0a26983843c092bfa353fd6b9aa8c3bf4886.tar.bz2 xen-b35d0a26983843c092bfa353fd6b9aa8c3bf4886.zip |
Nested VMX: Force check ISR when L2 is running
External interrupt is allowed to notify CPU only when it has higher
priority than current in servicing interrupt. With APIC-v, the priority
comparing is done by hardware and hardware will inject the interrupt to
VCPU when it recognizes an interrupt. Currently, there is no virtual
APIC-v feature available for L1 to use, so when L2 is running, we still need
to compare interrupt priority with ISR in hypervisor instead via hardware.
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/vlapic.c')
-rw-r--r-- | xen/arch/x86/hvm/vlapic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c index 7a154f9ac2..f1530fdedb 100644 --- a/xen/arch/x86/hvm/vlapic.c +++ b/xen/arch/x86/hvm/vlapic.c @@ -37,6 +37,7 @@ #include <asm/hvm/io.h> #include <asm/hvm/support.h> #include <asm/hvm/vmx/vmx.h> +#include <asm/hvm/nestedhvm.h> #include <public/hvm/ioreq.h> #include <public/hvm/params.h> @@ -1037,7 +1038,8 @@ int vlapic_has_pending_irq(struct vcpu *v) if ( irr == -1 ) return -1; - if ( vlapic_virtual_intr_delivery_enabled() ) + if ( vlapic_virtual_intr_delivery_enabled() && + !nestedhvm_vcpu_in_guestmode(v) ) return irr; isr = vlapic_find_highest_isr(vlapic); |