From mboxrd@z Thu Jan 1 00:00:00 1970 From: "tiejun.chen" Subject: Re: [v1][KVM][PATCH 1/1] kvm:ppc:booehv: direct ISI exception to Guest Date: Wed, 8 May 2013 09:53:50 +0800 Message-ID: <5189B02E.3000109@windriver.com> References: <1367970043.3398.39@snotra> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit Cc: , , , To: Scott Wood Return-path: In-Reply-To: <1367970043.3398.39@snotra> Sender: kvm-ppc-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 05/08/2013 07:40 AM, Scott Wood wrote: > On 05/07/2013 06:06:30 AM, Tiejun Chen wrote: >> We also can direct ISI exception to Guest like DSI. >> >> Signed-off-by: Tiejun Chen >> --- >> 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 interfere No. But after we reduce the exit to host, shouldn't this improve performance? > somewhat with using the VF bit, if we were to ever do so, since VF only affects Sorry, what is the VF you said? Tiejun