X86: Handle Hyper-V vmbus interrupts as special hypervisor interrupts

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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>

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K. Y. Srinivasan 2013-02-03 17:22:39 -08:00 • committed by H. Peter Anvin

parent db34bbb767

commit bc2b0331e0

6 changed files with 68 additions and 7 deletions

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4

arch/x86/include/asm/irq_vectors.h

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4

arch/x86/include/asm/mshyperv.h

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44

arch/x86/kernel/cpu/mshyperv.c

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arch/x86/kernel/entry_32.S

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arch/x86/kernel/entry_64.S

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7

drivers/xen/events.c

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