On 05.11.2013, at 18:22, Cédric Le Goater <clg@xxxxxxxxxx> wrote:
> If the host is in little endian order, there is no need to byte-swap
> in little endian guests.
>
> Signed-off-by: Cédric Le Goater <clg@xxxxxxxxxx>
> ---
> arch/powerpc/include/asm/kvm_book3s.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
> index ac06434..6974aa0 100644
> --- a/arch/powerpc/include/asm/kvm_book3s.h
> +++ b/arch/powerpc/include/asm/kvm_book3s.h
> @@ -272,7 +272,11 @@ static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
>
> static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
> {
> +#ifdef __LITTLE_ENDIAN__
> + return !(vcpu->arch.shared->msr & MSR_LE);
> +#else
> return vcpu->arch.shared->msr & MSR_LE;
> +#endif
> }
>
> static inline bool kvmppc_is_bigendian(struct kvm_vcpu *vcpu)
... and suddenly is_bigendian() becomes true for little endian guests on little endian hosts?
Alex
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