KVM: PPC: e500: Save/restore SPE state

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This is done lazily.  The SPE save will be done only if the guest has
used SPE since the last preemption or heavyweight exit.  Restore will be
done only on demand, when enabling MSR_SPE in the shadow MSR, in response
to an SPE fault or mtmsr emulation.

For SPEFSCR, Linux already switches it on context switch (non-lazily), so
the only remaining bit is to save it between qemu and the guest.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

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Scott Wood 2011-06-14 18:34:31 -05:00 • committed by Avi Kivity

parent ecee273fc4

commit 4cd35f675b

7 changed files with 148 additions and 17 deletions

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6

arch/powerpc/include/asm/kvm_host.h

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arch/powerpc/include/asm/reg_booke.h

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7

arch/powerpc/kernel/asm-offsets.c

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arch/powerpc/kvm/booke.c

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arch/powerpc/kvm/booke.h

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arch/powerpc/kvm/booke_interrupts.S

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arch/powerpc/kvm/e500.c

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