From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.alien8.de (mail.alien8.de [65.109.113.108]) (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 5ED2E20C46A; Wed, 19 Mar 2025 09:54:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=65.109.113.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742378072; cv=none; b=nnFq7Bat0OAlmk73M8nOkFgDPlBrYbD1jByHPDMKuLNKjYhV615u2btSesB/uTDghtb5snK6c3tShwv/yG8gVSXoOdJ1Ez1pa/KqBUj2mdwiH0wFj5vSKNmvMI2xhDlRcnrhFzsP7Rc9/+wUkN2qOL46E1S7AMTprN6O3AZez/4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742378072; c=relaxed/simple; bh=lcoJ/v4BNuTTqccAlT6cjQRIb0xerJabIpRrnhkHsKw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=mUaEqYQB/9H1qE78kA/X5Gbi9sGgd+XicgXVMrIjxr/LsLJKyooyZ2v+4ehKimUUPJZUmj+5mKm5OXF41jqmCUmFJ2MsQ3npAfoRZNFfWq5/limVQ1irb8C0TuQnKthKB8Rrwz+bshlqKXk7n2fthxASgxxRw+EdEqPyoL13dj8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de; spf=pass smtp.mailfrom=alien8.de; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b=JzKpmuwD; arc=none smtp.client-ip=65.109.113.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=alien8.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alien8.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (4096-bit key) header.d=alien8.de header.i=@alien8.de header.b="JzKpmuwD" Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTP id 31DE140E0196; Wed, 19 Mar 2025 09:54:25 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at mail.alien8.de Received: from mail.alien8.de ([127.0.0.1]) by localhost (mail.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 7o_IzpU70EBJ; Wed, 19 Mar 2025 09:54:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=alien8; t=1742378060; bh=WCsCMxOWpa+mMujFNfUXyDBBuoL0FWWVO1W19Vodfps=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=JzKpmuwDLK1ETFX64FYT4xFx9IikmURRnkz5ACuMJ13afZgaSouvNkf25lYnv6Pf4 CJk8dgqmTeheB9hOoDB3N7js8OyLZEwZ0INF4jPNWdSM9zyOIvMvSqYN5kiHKNoCEe YqUDi0vGQ0Wb0ComGOwNZBtAAiMZg9yzTnjVr01ONoJ4ieEkbmneNuMV+05Jso3zwf 21cBF/7gjpEXSxzQpRWMbcqYG/qwxeq0UVQxvPmhA/WeY9XlLM6zxneO+qycBLJpmp QtLx9YB8hnOQGtrQkcuQeHR0wLxXMRLsW9IBaOshTef026zpeLg6zBU3B1PxMEaAWt 6Xlo/73ycex0r6qaY3ZM6w/iESuH/qidl78nVP+r/+vpQzVGFURipWlGhsvR+geqX1 E/+d3LTM0LK4er7V7vacZ/H3l3/z48vDvctFmMNXPhVzRXVa75rsvN+CudgTyvt2cL V31+GyYwoHmmttifB4hyJhsX7QLVqWZRgeIRGl9tzN2OT4tryJSZwfiFP6sZSp7o5n BGIAL/s1oKU9yvgGF/eijdIDU7ub+VSnZp8MQHFWkSGLA5wJQkeKN89ecp9BwI7/ku lrKF3xsJQKIBBvr2nWTlE0fdkjM080lzmNUUV9UB5IQpoQP61P4GzXFh2pNWnSysRr /eoWf3DVNE81i5T7chPOBo+E= Received: from zn.tnic (pd95303ce.dip0.t-ipconnect.de [217.83.3.206]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) by mail.alien8.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 67C1340E015E; Wed, 19 Mar 2025 09:54:03 +0000 (UTC) Date: Wed, 19 Mar 2025 10:53:57 +0100 From: Borislav Petkov To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, xingwei lee , yuxin wang , Marius Fleischer , Ingo Molnar , Andrew Morton , Linus Torvalds , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Rik van Riel , "H. Peter Anvin" , Peter Xu , x86@kernel.org, Dan Carpenter Subject: Re: [tip: x86/mm] x86/mm/pat: Fix VM_PAT handling when fork() fails in copy_page_range() Message-ID: <20250319095357.GAZ9qUNaWSORZMXdRK@fat_crate.local> References: <20241029210331.1339581-1-david@redhat.com> <174100624258.10177.4534865061014070904.tip-bot2@tip-bot2> 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 Wed, Mar 19, 2025 at 09:15:25AM +0100, David Hildenbrand wrote: > @Ingo, can you drop this patch for now? It's supposed to be "!get_pat_info" > here, and I want to re-verify now that a couple of months passed, whether > it's all working as expected with that. > > (we could actually complain if get_pat_info() would fail at this point, let > me think about that) > > I'll resend once I get to it. Thanks! That patch is deep into the x86/mm branch. We could - rebase: not good, especially one week before the merge window - send a revert: probably better along with an explanation why we're reverting - do a small fix which disables it ontop - fix it properly: probably best! :-) Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette