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authorK. Y. Srinivasan <kys@microsoft.com>2013-02-03 17:22:39 -0800
committerH. Peter Anvin <hpa@linux.intel.com>2013-02-12 16:27:15 -0800
commitbc2b0331e077f576369a2b6c75d15ed4de4ef91f (patch)
tree49a62da6dae7fbc4cef8e887525d923d746cccec /arch/x86/include/asm/irq_vectors.h
parentdb34bbb767bdfa1ebed7214b876fe01c5b7ee457 (diff)
downloadlinux-bc2b0331e077f576369a2b6c75d15ed4de4ef91f.tar.gz
X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts
Starting with win8, vmbus interrupts can be delivered on any VCPU in the guest and furthermore can be concurrently active on multiple VCPUs. Support this interrupt delivery model by setting up a separate IDT entry for Hyper-V vmbus. interrupts. I would like to thank Jan Beulich <JBeulich@suse.com> and Thomas Gleixner <tglx@linutronix.de>, for their help. In this version of the patch, based on the feedback, I have merged the IDT vector for Xen and Hyper-V and made the necessary adjustments. Furhermore, based on Jan's feedback I have added the necessary compilation switches. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Link: http://lkml.kernel.org/r/1359940959-32168-3-git-send-email-kys@microsoft.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/include/asm/irq_vectors.h')
-rw-r--r--arch/x86/include/asm/irq_vectors.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h
index 1508e518c7e..aac5fa62a86 100644
--- a/arch/x86/include/asm/irq_vectors.h
+++ b/arch/x86/include/asm/irq_vectors.h
@@ -109,8 +109,8 @@
#define UV_BAU_MESSAGE 0xf5
-/* Xen vector callback to receive events in a HVM domain */
-#define XEN_HVM_EVTCHN_CALLBACK 0xf3
+/* Vector on which hypervisor callbacks will be delivered */
+#define HYPERVISOR_CALLBACK_VECTOR 0xf3
/*
* Local APIC timer IRQ vector is on a different priority level,