KVM: PPC: Book3S HV: Implement virtual mode H_PAGE_INIT handler

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Implement a virtual mode handler for the H_CALL H_PAGE_INIT which can be
used to zero or copy a guest page. The page is defined to be 4k and must
be 4k aligned.

The in-kernel handler halves the time to handle this H_CALL compared to
handling it in userspace for a radix guest.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

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Suraj Jitindar Singh 2019-03-22 17:05:44 +11:00 • committed by Paul Mackerras

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commit 2d34d1c3bb

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arch/powerpc/kvm/book3s_hv.c

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