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Mon, 29 Apr 2024 14:05:12 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by knuth.suse.de (Postfix) with ESMTP id 7D59334F8E0; Mon, 29 Apr 2024 14:05:12 +0200 (CEST) Date: Mon, 29 Apr 2024 14:05:12 +0200 (CEST) From: Michael Matz To: Borislav Petkov cc: Jiri Slaby , Ard Biesheuvel , linux-kernel@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , Song Liu , Ricardo Ribalda , Fangrui Song , Arthur Eubanks , stable@vger.kernel.org Subject: Re: [PATCH] x86/purgatory: Switch to the position-independent small code model In-Reply-To: <20240420131717.GAZiPAXY9EAYnHajaw@fat_crate.local> Message-ID: <836c267f-a028-acce-8b19-180162a5febc@suse.de> References: <20240418201705.3673200-2-ardb+git@google.com> <3f23b551-4815-4a06-9217-ff5beeb80df2@kernel.org> <20240420131717.GAZiPAXY9EAYnHajaw@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Level: * X-Spamd-Result: default: False [1.03 / 50.00]; HFILTER_HOSTNAME_UNKNOWN(2.50)[]; BAYES_HAM(-2.36)[97.02%]; HFILTER_HELO_IP_A(1.00)[knuth.suse.de]; NEURAL_HAM_LONG(-1.00)[-1.000]; RDNS_NONE(1.00)[]; HFILTER_HELO_NORES_A_OR_MX(0.30)[knuth.suse.de]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_NO_TLS_LAST(0.10)[]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; ARC_NA(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCPT_COUNT_TWELVE(0.00)[15]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; MISSING_XM_UA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; MID_RHS_MATCH_FROM(0.00)[]; DNSWL_BLOCKED(0.00)[2a07:de40:a101:3:9249:faff:fe06:959:from]; TAGGED_RCPT(0.00)[git]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim] X-Spam-Score: 1.03 X-Spam-Flag: NO X-Rspamd-Queue-Id: AA1461F390 X-Spamd-Bar: + Hello, On Sat, 20 Apr 2024, Borislav Petkov wrote: > Interesting. I thought gcc doesn't have problems here yet and was > talking to Matz on Thu about it and it seems he's forgotten about his > statement too that "you should simply stop using -mcmodel=large. Noone > should use it." :-) It may be so ingrained in my brain that I'm not _always_ saying it when talking about the large code model over a beer. And indeed I know of no particular problems with it vis GCC, but that doesn't mean it's a good idea to use :-) So once again: "everyone should simply stop using -mcmodel=large. Noone should use it." So the patch goes strictly into the direction of betterment of the universe. :) Ciao, Michael.