Drivers: hv: Allocate the paravisor SynIC pages when required

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Confidential VMBus requires interacting with two SynICs -- one
provided by the host hypervisor, and one provided by the paravisor.
Each SynIC requires its own message and event pages.

Refactor and extend the existing code to add allocating and freeing
the message and event pages for the paravisor SynIC when it is
present.

Signed-off-by: Roman Kisel <romank@linux.microsoft.com>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

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Roman Kisel 2025-10-08 16:34:09 -07:00 • committed by Wei Liu

parent 163224c189

commit 226494e5ee

2 changed files with 112 additions and 90 deletions

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184

drivers/hv/hv.c

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18

drivers/hv/hyperv_vmbus.h

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