From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 1CFA02DC78E for ; Wed, 30 Apr 2025 08:51:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746003104; cv=none; b=XToj2DN2YRazMwnMtY85qBjEtScWrbb5NsmUDV2LZ2BTUALXzLgsAYCP47JihDGTNl1cf1ba9DHRP35jWDFv/8xX9UNUPmtTm2yBMubEuMJomZshV6WS0DZvBTUiPp+QHqVikWZ8R1CoVYuF0b61Xf12e9knQ7Lqyn4cIIddExQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746003104; c=relaxed/simple; bh=+ukcY9Uz2AZwtZ68dyBujts0qhXFtak2XbG6PuD9ITc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PNB+Hu/72owk/wCpGubKrmqy3s0XuTzo26NZGAnilTSCOFcDdiJxOhLB+udI5UOE8VEfHpgYL6ZRh5d2s31izcxPkiBFIEVar2yEhqLnc9jI42PVGwv+yObXoNdRupSQbwMq7U64uXfE5iEu0TWTlPOyC3BCerphERJCSbLQgb8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=TNu8orOv; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="TNu8orOv" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=8GD8iADsizFhGDNZ/ZNaL/JWIzc9hg98Nf1McXX3ZhY=; b=TNu8orOviKyKi1Nq00fTveWOCw /Dj5RYLwN79mk2Yqy+zBlyAIi+GzbB9zHP4OrZwjgEnUZuQgiHty3Lfcx8sbX1iKerpGYPYdUU3ux 41r3IOkQ5f0NS3jDExMqx1TU00QUr+H//1J1iSRTFMFr4QkInXZUHYvUYmlbIx7sL9suqXoYK3BCJ i53A+tk+1+WvYf6mghQnKuKrSLki0zhhprHa6kN/sO+XRqvb353Gaa/1eKTvDDzgy7IXEg+brf71z BLQCK83boPnqloXiVW9A2WmSvi/z100Pp6K0dmo/JR2Qa/MpbInUruP5QhUra3g4roqMKXkJNtBJg 03jti8Ag==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98.1 #2 (Red Hat Linux)) id 1uA3AE-0000000DkK7-48ae; Wed, 30 Apr 2025 08:51:35 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 540FD300642; Wed, 30 Apr 2025 10:51:34 +0200 (CEST) Date: Wed, 30 Apr 2025 10:51:34 +0200 From: Peter Zijlstra To: "Borah, Chaitanya Kumar" Cc: Jani Nikula , "luto@kernel.org" , "intel-gfx@lists.freedesktop.org" , "intel-xe@lists.freedesktop.org" , "Kurmi, Suresh Kumar" , "Saarinen, Jani" , "De Marchi, Lucas" , "linux-kernel@vger.kernel.org" , Ingo Molnar , "hughd@google.com" Subject: Re: [REGRESSION] x86/efi: Make efi_enter/leave_mm() use the use_/unuse_temporary_mm() machinery (linux-next) Message-ID: <20250430085134.GI4439@noisy.programming.kicks-ass.net> References: <87selrwdct.fsf@intel.com> <20250429182904.GL4198@noisy.programming.kicks-ass.net> 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 Content-Disposition: inline In-Reply-To: On Wed, Apr 30, 2025 at 08:47:43AM +0000, Borah, Chaitanya Kumar wrote: > > > > -----Original Message----- > > From: Peter Zijlstra > > Sent: Tuesday, April 29, 2025 11:59 PM > > To: Jani Nikula > > Cc: Borah, Chaitanya Kumar ; > > luto@kernel.org; intel-gfx@lists.freedesktop.org; intel- > > xe@lists.freedesktop.org; Kurmi, Suresh Kumar > > ; Saarinen, Jani ; > > De Marchi, Lucas ; linux-kernel@vger.kernel.org; > > Ingo Molnar > > Subject: Re: [REGRESSION] x86/efi: Make efi_enter/leave_mm() use the > > use_/unuse_temporary_mm() machinery (linux-next) > > > > On Tue, Apr 29, 2025 at 12:01:22PM +0300, Jani Nikula wrote: > > > On Thu, 24 Apr 2025, "Borah, Chaitanya Kumar" > > wrote: > > > > +Andy, Ingo > > > > > > > > Friendly reminder. > > > > Issue is still seen on latest linux-next runs. > > > > > > > > https://intel-gfx-ci.01.org/tree/linux-next/next-20250424/bat-rpls-4 > > > > /boot0.txt > > > > > > > > Regards > > > > > > > > Chaitanya > > > > > > Andy, Ingo - > > > > > > Commit e7021e2fe0b4 ("x86/efi: Make efi_enter/leave_mm() use the > > > use_/unuse_temporary_mm() machinery") on linux-next regresses as > > > reported by Chaitanya > > > > > > Please look into it. > > > > Does your kernel include the below? > > This change has not yet landed in linux-next. However, making local change on top of next-20250429 seems to help us. > > Important to note that we don't CONFIG_DEBUG_VM=y as mentioned by Hugh. > > Any idea when this lands in linux-next? This is the top commit in tip/x86/alternatives and should already be in -next, Ingo, any idea what is going wrong?