KVM: PPC: Teach MMIO Signedness

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The guest I was trying to get to run uses the LHA and LHAU instructions.
Those instructions basically do a load, but also sign extend the result.

Since we need to fill our registers by hand when doing MMIO, we also need
to sign extend manually.

This patch implements sign extended MMIO and the LHA(U) instructions.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Alexander Graf 2010-02-19 11:00:30 +01:00 • committed by Avi Kivity

parent b104d06632

commit 3587d5348c

4 changed files with 47 additions and 0 deletions

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1

arch/powerpc/include/asm/kvm_host.h

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3

arch/powerpc/include/asm/kvm_ppc.h

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14

arch/powerpc/kvm/emulate.c

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29

arch/powerpc/kvm/powerpc.c

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