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| author | K. Y. Srinivasan <kys@microsoft.com> | 2013-02-03 17:22:39 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-02-12 16:27:15 -0800 |
| commit | bc2b0331e077f576369a2b6c75d15ed4de4ef91f (patch) | |
| tree | 49a62da6dae7fbc4cef8e887525d923d746cccec /arch/x86/include | |
| parent | db34bbb767bdfa1ebed7214b876fe01c5b7ee457 (diff) | |
| download | lwn-bc2b0331e077f576369a2b6c75d15ed4de4ef91f.tar.gz lwn-bc2b0331e077f576369a2b6c75d15ed4de4ef91f.zip | |
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')
| -rw-r--r-- | arch/x86/include/asm/irq_vectors.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 4 |
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index 1508e518c7e3..aac5fa62a86c 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, diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index 79ce5685ab64..c2934be2446a 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -11,4 +11,8 @@ struct ms_hyperv_info { extern struct ms_hyperv_info ms_hyperv; +void hyperv_callback_vector(void); +void hyperv_vector_handler(struct pt_regs *regs); +void hv_register_vmbus_handler(int irq, irq_handler_t handler); + #endif |