From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from exactco.de (exactco.de [176.9.10.151]) (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 D457922FAFD; Tue, 2 Sep 2025 16:51:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=176.9.10.151 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756831863; cv=none; b=DJ31ctSlYnagHkI93XrA/6PtP02NGAXgZrx6Y+UtosTTxga/e4KY5F6niWE9uDGuuTBGTGXVGTCT3Asy3pCUUr610Dmdbf7kjw+HJ20apNSUTTemr6BbkAoWIZpiC697xopjbm9YQRpm46GFUqXvMW+aaSXxuLCCoxPtn1AJqLc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756831863; c=relaxed/simple; bh=1i0JvEXxzeQhDhQ3QadruQc9Pqg2kkvDSoZvHpUJGLQ=; h=Date:Message-Id:To:Cc:Subject:From:In-Reply-To:References: Mime-Version:Content-Type; b=fY1ShZWvBpGcpkFlmYFp4rt/ts77ncIjvneKwIf7e1Iqm97RQQe6gPuz+Qp8UMxP9BedIw5ogykAE4ewSWzi0ZIblIHTaMjiRYit7Aklf04Irn2kVbEdrWyxWYBlspgMkNfblqaMTTTgW0sysoQiRFqMkFvRDSNs7mBRNTi1Y+U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=exactcode.com; spf=pass smtp.mailfrom=exactco.de; dkim=pass (2048-bit key) header.d=exactco.de header.i=@exactco.de header.b=Qob79FtR; arc=none smtp.client-ip=176.9.10.151 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=exactcode.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=exactco.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=exactco.de header.i=@exactco.de header.b="Qob79FtR" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=exactco.de; s=x; h=Sender:Content-Transfer-Encoding:Content-Type:Mime-Version:References: In-Reply-To:From:Subject:Cc:To:Message-Id:Date:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=U1NVNZzFNPKLfNEMAY0syXFR4s/LQ4mHFlghr5myPvw=; b=Qob79FtRilIUogJOs+Phf9f5LH wUMKGXBZ+HLpXL6d+U2n0QC+gxURNeC3DyY8bY3n4SpzwtE771nl4iYJeJD9w5QACk4veXweDbHKj uzVDjM5oiINTeCOWCPsjDZiP7MdbAUVfq9Xakjx42wS1r/eHvtCxYiQPYMV3bCHo6GmaCqW5geTJO I9cyR3g6bCdPLDyPRmjcWoA6HhcFWo9L7Yoh1aIU97Fpp5kxCmLwotxFv+PFAV6aRplusCdT35ahr v4kFh3iNoTlBPNQEvXpWc66fSVtG1Z8q+FSB6gDDs3XoAZuZfphP6/A7Um1DTDqw85Q/g0AN/uxod bmUEm6EQ==; Date: Tue, 02 Sep 2025 18:51:01 +0200 (CEST) Message-Id: <20250902.185101.101005511917098882.rene@exactcode.com> To: glaubitz@physik.fu-berlin.de Cc: kernel@mkarcher.dialup.fu-berlin.de, linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org, andreas@gaisler.com, anthony.yznaga@oracle.com Subject: Re: [PATCH 3/4] sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara From: Rene Rebe In-Reply-To: References: <20250826160312.2070-4-kernel@mkarcher.dialup.fu-berlin.de> <20250902.184011.440504961051160142.rene@exactcode.com> X-Mailer: Mew version 6.10 on Emacs 30.2 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=iso-8859-1 Content-Transfer-Encoding: quoted-printable Sender: rene@exactco.de From: John Paul Adrian Glaubitz > Hi Rene, > = > On Tue, 2025-09-02 at 18:40 +0200, Rene Rebe wrote: > > Hi, > > = > > From: Michael Karcher > > = > > > Fixes: 7ae3aaf53f16 ("sparc64: Convert NGcopy_{from,to}_user to a= ccurate exception reporting.") > > > Signed-off-by: Michael Karcher > > = > > Tested-by: Ren=E9 Rebe # UltraSparc T4 SPARC T= 4-1 Server > = > Thanks for the testing! However, this actually needs to be tested on = a SPARC T1 > as both T2 and T4 have their own implementation that is being used. T= esting on a > T4 will therefore not invoke this particular code unless you modify t= he kernel in > head_64.S to employ the Niagara 1 code on Niagara 4. Ah right, sorry, IIRC you wrote that :-/ > Do you happen to have a SPARC T1? Unfortuantely not. A T2 user might have one, but I could also modify the kernel and use the less optimized T1 code if that helps, ... Ren=E9 > Adrian > = > -- = > .''`. John Paul Adrian Glaubitz > : :' : Debian Developer > `. `' Physicist > `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913 -- = Ren=E9 Rebe, ExactCODE GmbH, Berlin, Germany https://exactcode.com | https://t2linux.com | https://rene.rebe.de