Subject: Re: [v1][KVM][PATCH 1/1] kvm:ppc:booehv: direct ISI exception to Guest

From: Scott Wood <[email-masked]>
Date: Tue, 7 May 2013 18:40:43 -0500

On 05/07/2013 06:06:30 AM, Tiejun Chen wrote:
> We also can direct ISI exception to Guest like DSI.
>=20
> Signed-off-by: Tiejun Chen <[email-masked]>
> ---
>  arch/powerpc/kvm/booke_emulate.c |    3 +++
>  arch/powerpc/kvm/e500mc.c        |    3 ++-
>  2 files changed, 5 insertions(+), 1 deletion(-)

Are you seeing a real performance improvement from this?  This will =20
interfere somewhat with using the VF bit, if we were to ever do so, =20
since VF only affects data accesses (and so the guest would see an ISI =20
storm rather than a machine check if it tries to execute from such an =20
address).

-Scott=