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| author | Jan Beulich <jbeulich@suse.com> | 2013-07-17 08:47:18 +0200 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2013-07-17 08:47:18 +0200 |
| commit | 303066fdb1e4fe816e48acd665453f58b8399e81 (patch) | |
| tree | 61cd57057814cf581bc20e42476b702f8e9f8cdf /xen/arch/x86/hvm/vlapic.c | |
| parent | 85047d9e4f4afeb73bca1e98f705a2f4f1d51c03 (diff) | |
| download | xen-303066fdb1e4fe816e48acd665453f58b8399e81.tar.gz xen-303066fdb1e4fe816e48acd665453f58b8399e81.tar.bz2 xen-303066fdb1e4fe816e48acd665453f58b8399e81.zip | |
VMX: fix interaction of APIC-V and Viridian emulation
Viridian using a synthetic MSR for issuing EOI notifications bypasses
the normal in-processor handling, which would clear
GUEST_INTR_STATUS.SVI. Hence we need to do this in software in order
for future interrupts to get delivered.
Based on analysis by Yang Z Zhang <yang.z.zhang@intel.com>.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'xen/arch/x86/hvm/vlapic.c')
| -rw-r--r-- | xen/arch/x86/hvm/vlapic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xen/arch/x86/hvm/vlapic.c b/xen/arch/x86/hvm/vlapic.c index e039ed0945..7a154f9ac2 100644 --- a/xen/arch/x86/hvm/vlapic.c +++ b/xen/arch/x86/hvm/vlapic.c @@ -386,6 +386,9 @@ void vlapic_EOI_set(struct vlapic *vlapic) vlapic_clear_vector(vector, &vlapic->regs->data[APIC_ISR]); + if ( hvm_funcs.handle_eoi ) + hvm_funcs.handle_eoi(vector); + if ( vlapic_test_and_clear_vector(vector, &vlapic->regs->data[APIC_TMR]) ) vioapic_update_EOI(vlapic_domain(vlapic), vector); |