From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christian Ehrhardt Date: Thu, 21 Aug 2008 14:13:41 +0000 Subject: Re: [PATCH 4/4] kvmppc: convert wrteei to wrtee as kvm guest optimization Message-Id: <48AD7815.70107@linux.vnet.ibm.com> List-Id: References: <1219142204-12044-1-git-send-email-ehrhardt@linux.vnet.ibm.com> <1219142204-12044-5-git-send-email-ehrhardt@linux.vnet.ibm.com> <81439C52-0CB6-4C46-9A97-3D30B84F58AF@kernel.crashing.org> In-Reply-To: <81439C52-0CB6-4C46-9A97-3D30B84F58AF@kernel.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: Kumar Gala Cc: linuxppc-dev@ozlabs.org, hollisb@us.ibm.com, kvm-ppc@vger.kernel.org Kumar Gala wrote: > > On Aug 19, 2008, at 5:36 AM, ehrhardt@linux.vnet.ibm.com wrote: > >> From: Christian Ehrhardt >> >> Dependent on the already existing CONFIG_KVM_GUEST config option this=20 >> patch >> changes wrteei to wrtee allowing the hypervisor to rewrite those to=20 >> nontrapping >> instructions. Maybe we should split the kvm guest otpimizations in=20 >> two parts >> one for the overhead free optimizations and on for the rest that=20 >> might add >> some complexity for non virtualized execution (like this one). >> >> Signed-off-by: Christian Ehrhardt >> --- > > So this commit message doesnt explain why 'wrtee' facilities doing=20 > whatever optimization and 'wrteei' doesnt. > yep I only explained it elsewhere. I'll add it here too in the next version - thanks Kumar (and fix the word otpimizations) --=20 Gr=FCsse / regards,=20 Christian Ehrhardt IBM Linux Technology Center, Open Virtualization