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Thu, 4 Apr 2024 14:44:05 +0000 (UTC) Date: Thu, 4 Apr 2024 16:44:00 +0200 From: Borislav Petkov To: Klara Modin Cc: Josh Poimboeuf , "Kaplan, David" , Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-tip-commits@vger.kernel.org" , "Peter Zijlstra (Intel)" , "x86@kernel.org" , David Howells Subject: Re: [PATCH -v2] x86/retpoline: Ensure default return thunk isn't used at runtime Message-ID: <20240404144400.GEZg68sPtF1xTFmUUH@fat_crate.local> References: <20240104132623.GFZZax/wyf5Y3rMX5G@fat_crate.local> <20240207175010.nrr34b2pp3ewe3ga@treble> <20240207185328.GEZcPRqPsNInRXyNMj@fat_crate.local> <20240207194919.qw4jk2ykadjn5d4e@treble> <20240212104348.GCZcn2ZPr445KUyQ7k@fat_crate.local> <78e0d19c-b77a-4169-a80f-2eef91f4a1d6@gmail.com> <20240403173059.GJZg2SUwS8MXw7CdwF@fat_crate.local> <20240403204113.GLZg2-6f0nH0Ne9CQt@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=utf-8 Content-Disposition: inline In-Reply-To: On Thu, Apr 04, 2024 at 12:25:42AM +0200, Klara Modin wrote: > All the more reason to continue then, even if only for nostalgia ;) Here's an argument for you: please save the environment by using only 64-bit hw. :-P > Jokes aside, I do run -next kernels regularly for my daily drivers (which > are x86_64), but it's honestly not very often I notice bugs there that > affect me. They have all been pretty minor or very obvious and would > probably have been caught regardless, but I'll of course still report them. That's good. What you could also do is build random configs on linux-next - "make randconfig" - and see if you catch something weird there. And maybe then try to boot them in a VM and see what explodes. In general, testing linux-next is a very good idea because it helps us catch crap early and fix it before it hits the official releases. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette