On 03.06.2011, at 01:16, Scott Wood wrote:
> 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@xxxxxxxxxxxxx>
> Signed-off-by: Scott Wood <scottwood@xxxxxxxxxxxxx>
> ---
> arch/powerpc/include/asm/kvm_host.h | 6 ++
> arch/powerpc/include/asm/reg_booke.h | 1 +
> arch/powerpc/kernel/asm-offsets.c | 7 +++
> arch/powerpc/kvm/booke.c | 84 +++++++++++++++++++++++++++++++++-
> arch/powerpc/kvm/booke.h | 22 +++------
> arch/powerpc/kvm/booke_interrupts.S | 38 +++++++++++++++
> arch/powerpc/kvm/e500.c | 15 ++----
> 7 files changed, 148 insertions(+), 25 deletions(-)
>
[...]
> diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
> index 318dbc6..43923c3 100644
> --- a/arch/powerpc/kvm/e500.c
> +++ b/arch/powerpc/kvm/e500.c
> @@ -1,5 +1,5 @@
> /*
> - * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved.
> + * Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
> *
> * Author: Yu Liu, <yu.liu@xxxxxxxxxxxxx>
> *
> @@ -25,14 +25,6 @@
> #include "booke.h"
> #include "e500_tlb.h"
>
> -void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
> -{
> -}
> -
> -void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
> -{
> -}
> -
How did this slip in? :)
Alex
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