x86: hv: Add function to allocate zeroed page for Hyper-V

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Hyper-V assumes page size to be 4K. While this assumption holds true on
x86 architecture, it might not  be true for ARM64 architecture. Hence
define hyper-v specific function to allocate a zeroed page which can
have a different implementation on ARM64 architecture to handle the
conflict between hyper-v's assumed page size and actual guest page size.

Signed-off-by: Himadri Pandya <himadri18.07@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Himadri Pandya 2019-07-30 09:49:43 +00:00 • committed by Sasha Levin

parent 0541a22594

commit fa36dcdf8b

2 changed files with 9 additions and 0 deletions

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8

arch/x86/hyperv/hv_init.c

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1

arch/x86/include/asm/mshyperv.h

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