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Hermes SMTP Server) with ESMTPA ID 0539108f3a14b27640c2679d028594e8; Tue, 16 Aug 2022 16:16:40 +0000 (UTC) Message-ID: Date: Tue, 16 Aug 2022 12:16:36 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:102.0) Gecko/20100101 Thunderbird/102.1.2 Subject: Re: [PATCH 0/3] x86: make pat and mtrr independent from each other To: Thorsten Leemhuis Cc: jbeulich@suse.com, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , "Rafael J. Wysocki" , Pavel Machek , Andy Lutomirski , Peter Zijlstra , Boris Ostrovsky , regressions@lists.linux.dev, xen-devel@lists.xenproject.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Juergen Gross References: <20220715142549.25223-1-jgross@suse.com> <32ed59c9-c894-c426-dd27-3602625cf3b1@netscape.net> <8d148826-62a5-95f9-8662-be14f56a6336@netscape.net> <6b40ecc3-a2d3-3efd-4a19-2faf737f098b@leemhuis.info> Content-Language: en-US From: Chuck Zmudzinski In-Reply-To: <6b40ecc3-a2d3-3efd-4a19-2faf737f098b@leemhuis.info> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Mailer: WebService/1.1.20531 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.aol Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 8/16/2022 10:41 AM, Thorsten Leemhuis wrote: > On 15.08.22 20:17, Chuck Zmudzinski wrote: > > On 8/15/2022 2:00 PM, Thorsten Leemhuis wrote: > > > >> And FWIW: I've seen indicators that a solution to resolve this is > >> hopefully pretty close now. > > > > That's good to know. But I must ask, can you provide a link to a public > > discussion that indicates a fix is close? > > I just searched for the commit id of the culprit yesterday like this: > https://lore.kernel.org/all/?q=bdd8b6c982* > > Which brought me to this message, which looks like Boris applied a > slightly(?) modified version of Jan's patch to a branch that afaik is > regularly pushed to Linus: > https://lore.kernel.org/all/166055884287.401.612271624942869534.tip-bot2@tip-bot2/ > > So unless problems show up in linux-next I expect this will land in > master soon (and a bit later be backported to stable due to the CC > stable tag). OK, that's exactly the kind of thing I am looking for. It would be nice if regzbot could have found that patch in that tree and display it in the web interface as a notable patch. Currently, regzbot is only linking to a dead patch that does not even fix the regression as a notable patch associated with this regression. If regzbot is not yet smart enough to find it, could you take the time to manually intervene with a regzbot command so that patch is displayed as a notable patch for this regression? > > > Or do you know a fix is close > > because of private discussions? That distinction is important to me > > because open source software is much less useful to me if the solutions > > to problems are not discussed openly (except, of course, for solutions > > to security vulnerabilities that are not yet public). > > You IMHO are expecting a bit too much here IMHO. Solutions to problems > in open source software get discussed on various, sometimes private > channels all the time. Just take conferences for example, where people > discuss them during talks, meetings, or in one-to-ones over coffee; > sometimes they are the only way to solve complex problems. But as you > can see from above link it's not like anybody is trying to sneak things > into the kernel. > > Ciao, Thorsten Well, as a user of Linux, I would like to see more of those discussions in the open, especially if they relate directly to a fix of a regression tracked by regzbot. it would be helpful for me to decide questions such as, does it make sense for me to keep using the foo project to provide a feature, or should I switch to project baz that provides the same feature? In any case, watching what Linus actually chooses to commit into mainline gives me a pretty good clue about such questions. Best regards, Chuck