From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 503D018A6D3; Sat, 22 Mar 2025 07:29:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742628542; cv=none; b=gxHrF4oUHj9wRrJVKw9Av7rqR107Tokhdrjwp0tJRkVf8bkzB/oIkGrUpHC793rxLFuV2GQXjmGNMRfUE2il/6/a1/jdbOQVhyL1TAgtoQ2zsgjRbhyIryYdBvaGm+HcaYTuYHsiLypVdb8C+0sUwy1GGxHtZlKwA2pk0iP9gfQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742628542; c=relaxed/simple; bh=8KQ5iiw5zSx3Kwqm+V4tw6kGTtVvzAUfJdYNkPur63U=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=L6PRIGtSWwZhgsF886/BQcaOJfKGwbIu2st9n76DQkrwapUrhYxw9eieyuapCgobvbrYICaDtgrx+82Yn28exUZJlh4pf+n+z/NW1w9CqwoYKPi7vFqdKCcWN1BxPO3KqMDCt1cPL9Ca2MOD/XBMXZtAlNrkqg9XCrOilxdCYF4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ENEYF2Rn; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ENEYF2Rn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A19CFC4CEDD; Sat, 22 Mar 2025 07:28:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1742628541; bh=8KQ5iiw5zSx3Kwqm+V4tw6kGTtVvzAUfJdYNkPur63U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ENEYF2RnjC0899xY0ZxDknuq9ZI6OnXM81cqCkB5cHhSrsVIk1KfN/YWQHRdUAz/c aBqSSBOCvDrDATIyeBt1+BAQU1QCHan++4s5fgXzmezlhLkO6tjxUW2VIJMhzt807r aJmD/qMvmewclfkIxjSmOAGf9ooDM/LFTmJI/PV0pAWonsfSd7cEUVnDPUZyMzhMyw FbclhttqkSa/fgXZtTGaVi6tcwgH/ul5FY+xFbdXpjMooV60GVfmotaEs3ud3Y8kUV WOwvddZStGvM+SQOU7NlgNOWQhS0nJ1Xtj0wCO9/EwZCn0+ATkCO9zs1TXvprWbvEN AmmXnxC7vcbYg== Date: Sat, 22 Mar 2025 08:28:54 +0100 From: Ingo Molnar To: david@ixit.cz Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Kees Cook , Jonathan Cameron , Lars-Peter Clausen , linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, Mateusz =?utf-8?Q?Jo=C5=84czyk?= , Andy Lutomirski , Brian Gerst , Juergen Gross , Josh Poimboeuf , Kees Cook Subject: Re: [PATCH v3 7/7] x86/Kconfig: Document release year of glibc 2.3.3 Message-ID: References: <20250321-x86_x2apic-v3-0-b0cbaa6fa338@ixit.cz> <20250321-x86_x2apic-v3-7-b0cbaa6fa338@ixit.cz> 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 Content-Transfer-Encoding: 8bit In-Reply-To: <20250321-x86_x2apic-v3-7-b0cbaa6fa338@ixit.cz> * David Heidelberg via B4 Relay wrote: > From: Mateusz Jończyk > > I wonder how many people were checking their glibc version when > considering whether to enable this option. > > Signed-off-by: Mateusz Jończyk > Signed-off-by: David Heidelberg > --- > arch/x86/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index ba6ba3a7011554d9cb58fb0acf48d541da8ed69b..22dd962f8e5c86741a512e12596bd940cd1dae97 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -2225,7 +2225,7 @@ config HOTPLUG_CPU > > config COMPAT_VDSO > def_bool n > - prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)" > + prompt "Workaround for glibc 2.3.2 / 2.3.3 (released in year 2003/2004)" > depends on COMPAT_32 > help > Certain buggy versions of glibc will crash if they are So I applied this patch, because it's an obvious improvement over the status quo - but I think we should finally remove COMPAT_VDSO... Thanks, Ingo