From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Murphy Subject: Re: [RFC PATCH v1 02/18] x86: Secure Memory Encryption (SME) build enablement Date: Wed, 27 Apr 2016 18:07:34 +0100 Message-ID: <5720F1D6.7020400@arm.com> References: <20160426225553.13567.19459.stgit@tlendack-t1.amdoffice.net> <20160426225614.13567.47487.stgit@tlendack-t1.amdoffice.net> <20160322130150.GB16528@xo-6d-61-c0.localdomain> <5720D810.9060602@amd.com> <20160427153010.GA7861@amd> <20160427154140.GK21011@pd.tnic> <20160427164137.GA11779@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20160427164137.GA11779@amd> Sender: kvm-owner@vger.kernel.org To: Pavel Machek , Borislav Petkov Cc: linux-efi@vger.kernel.org, kvm@vger.kernel.org, =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Matt Fleming , x86@kernel.org, linux-mm@kvack.org, Alexander Potapenko , "H. Peter Anvin" , linux-arch@vger.kernel.org, Jonathan Corbet , linux-doc@vger.kernel.org, kasan-dev@googlegroups.com, Ingo Molnar , Andrey Ryabinin , Tom Lendacky , Arnd Bergmann , Thomas Gleixner , Dmitry Vyukov , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Paolo Bonzini List-Id: linux-efi@vger.kernel.org On 27/04/16 17:41, Pavel Machek wrote: > On Wed 2016-04-27 17:41:40, Borislav Petkov wrote: >> On Wed, Apr 27, 2016 at 05:30:10PM +0200, Pavel Machek wrote: >>> Doing it early will break bisect, right? >> >> How exactly? Please do tell. > > Hey look, SME slowed down 30% since being initially merged into > kernel! As opposed to "well, bisection shows these n+1 complicated changes are all fine and the crash is down to this Kconfig patch", presumably. I'm sure we all love spending a whole afternoon only to find that, right? :P Robin. > Pavel >