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

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Implement a real 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 real mode handler halves the time to handle this H_CALL
compared to handling it in userspace for a hash 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 17:05:45 +11:00 • committed by Paul Mackerras

parent 2d34d1c3bb

commit eadfb1c5f8

3 changed files with 147 additions and 1 deletions

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2

arch/powerpc/include/asm/kvm_ppc.h

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144

arch/powerpc/kvm/book3s_hv_rm_mmu.c

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2

arch/powerpc/kvm/book3s_hv_rmhandlers.S

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