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| author | Feng Wu <feng.wu@intel.com> | 2015-05-19 11:07:16 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-05-19 15:51:17 +0200 |
| commit | f6b3c72c23661e5534cd2eede16e9bac7ebb761c (patch) | |
| tree | 9a4033e16059ae731bd8fc5420a942b9dcecaadc /arch/x86/kernel/irqinit.c | |
| parent | x86/irq/msi: Implement irq_set_vcpu_affinity for remapped MSI irqs (diff) | |
| download | linux-f6b3c72c23661e5534cd2eede16e9bac7ebb761c.tar.xz linux-f6b3c72c23661e5534cd2eede16e9bac7ebb761c.zip | |
x86/irq: Define a global vector for VT-d Posted-Interrupts
Currently, we use a global vector as the Posted-Interrupts
Notification Event for all the vCPUs in the system. We need
to introduce another global vector for VT-d Posted-Interrtups,
which will be used to wakeup the sleep vCPU when an external
interrupt from a direct-assigned device happens for that vCPU.
[ tglx: Removed a gazillion of extra newlines ]
Signed-off-by: Feng Wu <feng.wu@intel.com>
Cc: jiang.liu@linux.intel.com
Link: http://lkml.kernel.org/r/1432026437-16560-4-git-send-email-feng.wu@intel.com
Suggested-by: Yang Zhang <yang.z.zhang@intel.com>
Acked-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/irqinit.c')
| -rw-r--r-- | arch/x86/kernel/irqinit.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c index dc1e08d23552..680723a8e4b6 100644 --- a/arch/x86/kernel/irqinit.c +++ b/arch/x86/kernel/irqinit.c @@ -144,6 +144,8 @@ static void __init apic_intr_init(void) #ifdef CONFIG_HAVE_KVM /* IPI for KVM to deliver posted interrupt */ alloc_intr_gate(POSTED_INTR_VECTOR, kvm_posted_intr_ipi); + /* IPI for KVM to deliver interrupt to wake up tasks */ + alloc_intr_gate(POSTED_INTR_WAKEUP_VECTOR, kvm_posted_intr_wakeup_ipi); #endif /* IPI vectors for APIC spurious and error interrupts */ |