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drivers:hv: Export a function that maps Linux CPU num onto Hyper-V proc num

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This patch exposes the mapping between Linux CPU number and Hyper-V virtual
processor number.  This is necessary because the hypervisor needs to know which
virtual processors to target when making a mapping in the Interrupt Redirection
Table in the I/O MMU.

Signed-off-by: Jake Oshins <jakeo@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jake Oshins
2015-12-14 16:01:39 -08:00
committed by Greg Kroah-Hartman
parent 17efbee8ba
commit 619848bd07
2 changed files with 19 additions and 0 deletions
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include/linux/hyperv.h
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@@ -983,6 +983,8 @@ int vmbus_allocate_mmio(struct resource **new, struct hv_device *device_obj,
resource_size_t size, resource_size_t align,
bool fb_overlap_ok);
int vmbus_cpu_number_to_vp_number(int cpu_number);
/**
* VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device
*