From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rPmTc0XxWzDqYn for ; Wed, 8 Jun 2016 21:31:00 +1000 (AEST) Message-ID: <1465385458.13854.11.camel@ellerman.id.au> Subject: Re: Kernel 4.7: PAGE_GUARDED and _PAGE_NO_CACHE From: Michael Ellerman To: Christian Zigotzky , "Aneesh Kumar K.V" , Benjamin Herrenschmidt , linuxppc-dev@lists.ozlabs.org, darren@stevens-zone.net, Michael Ellerman , Julian Margetson , Adrian Cox , "R.T.Dickinson" , "R.T.Dickinson" , Pat Wall , Pat Wall , "contact@a-eon.com" , Matthew Leaman , luigi burdo , Christian Zigotzky Date: Wed, 08 Jun 2016 21:30:58 +1000 In-Reply-To: <409c2f4c-52bf-8f46-8a29-c6f384c75946@xenosoft.de> References: <8B4C4AB7-5C17-4992-935A-361153472793@xenosoft.de> <1463990507.3078.16.camel@kernel.crashing.org> <1464088614.3078.79.camel@kernel.crashing.org> <1298e1f6-beb7-5487-72a1-366ebd140c17@xenosoft.de> <87d1obqxg9.fsf@skywalker.in.ibm.com> <9690f9a4-70c7-8acc-42d0-779bcc93db52@xenosoft.de> <66397458-c40a-4e83-c5e5-0ba69fb48986@xenosoft.de> <874m99uibc.fsf@skywalker.in.ibm.com> <1465174304.12265.0.camel@ellerman.id.au> <50194690-18ac-edfd-42cb-8f1cc96055c9@xenosoft.de> <1465354334.14294.4.camel@ellerman.id.au> <409c2f4c-52bf-8f46-8a29-c6f384c75946@xenosoft.de> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Wed, 2016-06-08 at 12:58 +0200, Christian Zigotzky wrote: > On 08 June 2016 at 04:52 AM, Michael Ellerman wrote: > > On Tue, 2016-06-07 at 22:17 +0200, Christian Zigotzky wrote: > > > 764041e0f43cc7846f6d8eb246d65b53cc06c764 is the first bad commit > > > commit 764041e0f43cc7846f6d8eb246d65b53cc06c764 > > > Author: Aneesh Kumar K.V > > > Date: Fri Apr 29 23:26:09 2016 +1000 > > > > > > powerpc/mm/radix: Add checks in slice code to catch radix usage > > > > > > Radix doesn't need slice support. Catch incorrect usage of slice code > > > when radix is enabled. > > > > > > Signed-off-by: Aneesh Kumar K.V > > > Signed-off-by: Michael Ellerman > > > > > Hmm, I find that hard to believe. But maybe I'm missing something. > > > > Can you checkout Linus' master and then revert that commit? > > > $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git linux-git > $ git checkout > Your branch is up-to-date with 'origin/master'. > > $ git revert 764041e0f43cc7846f6d8eb246d65b53cc06c764 -m 1 > error: Mainline was specified but commit 764041e0f43cc7846f6d8eb246d65b53cc06c764 is not a merge. > fatal: revert failed > > How can I checkout Linus' master and then revert that commit? It's not a merge, so just plain git revert: $ git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git linux-git $ cd linux-git $ git revert 764041e0f43cc7846f6d8eb246d65b53cc06c764 [master 5dd9737a173e] Revert "powerpc/mm/radix: Add checks in slice code to catch radix usage" 1 file changed, 16 deletions(-) cheers