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Mon, 12 Jun 2023 11:51:59 +0000 (UTC) Date: Mon, 12 Jun 2023 13:51:54 +0200 From: Borislav Petkov To: David Laight Cc: Breno Leitao , "tglx@linutronix.de" , "pawan.kumar.gupta@linux.intel.com" , "paul@paul-moore.com" , "leit@meta.com" , "x86@kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] cpu/bugs: Disable CPU mitigations at compilation time Message-ID: <20230612115154.GEZIcG2tWkn8I0+E2t@fat_crate.local> References: <20230203120615.1121272-1-leitao@debian.org> <20230609173343.GDZINid4EgJGnkW7HK@fat_crate.local> <543116e1a8cf4b7a8b086c850374f99e@AcuMS.aculab.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <543116e1a8cf4b7a8b086c850374f99e@AcuMS.aculab.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 12, 2023 at 11:22:15AM +0000, David Laight wrote: > I can definitely justify compiling them all out. > For instance embedded systems with limited userspace and > (pretty much) everything running as root. Nothing's stopping you from adding "mitigations=off" to your grub config. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette