From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (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 70E9938B7AA; Fri, 29 May 2026 06:03:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780034622; cv=none; b=mgozEkquRjjKspeuZSAn5UWP3qsvs18OdZrlWA/JUFpgIJ9gq3oYpkv9F6Nq8Syr85kdZA/gyjtF9P8wwpLJkI+yZnI8+YCvXIWOntRm0DWSUOA/9xChomQYIKWsFhpsW1BUFjDjdB71eJ3SkBeMARfDfsJzYBw+ivrFVZ815n0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780034622; c=relaxed/simple; bh=azyEsUy11K9vnAl2wpTXXwsKzMrJnt5yH0Sb1Ijv/V0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=FvMN+CQi4kdWV9ohTBOkcdUTXn3H9xcRt0ZRGodHt6hEAQt7ux+qNaYEJRIAehy7HMpwx6dkKlwSVFqIMKV0RxSdgBfaqIrS60pMRnqzcSVUo7Rn9GiLMaUcl50BQ1rd0j62YRwNRTAhzi1fC8n1tAsFF1fTOP6e0VmPW3oPf0M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ngggiqfx; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ngggiqfx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1780034620; x=1811570620; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=azyEsUy11K9vnAl2wpTXXwsKzMrJnt5yH0Sb1Ijv/V0=; b=ngggiqfxfDHW4dPoYvDLLHSrtEDtOXmazq7T1Oo6p++xqBv6c9/iUoyr 0JiX/xMcz8ZCZLvzTdMi7vH+VzQ7onU/mq6OI77o7MiusUEt+yqMmqNZl lPT8fPI/mQGBovRAyCXva7DiL7Dh/CgLDEolArqsm1BCndsqN38EIN/P7 M1wurw+gkR1HXR9Wjki1yjC/XHYXch3kENF/iQuC0RbcLq+5EXFoBVSMb 66NrejcrOIZf/FkYkwzvfOm4tu8VeFs008wDo9fLnSqh7taTcd8C4zrUo 9rltivuVIjC483NkxTCbTPyPsnDKRlhzQoLoXZGu+H06TctLXVECejBFo w==; X-CSE-ConnectionGUID: eVBi5/l8Tg20a83o+J0fiA== X-CSE-MsgGUID: QGWtgzMMQuCnRj+P6Ro/tg== X-IronPort-AV: E=McAfee;i="6800,10657,11800"; a="106333966" X-IronPort-AV: E=Sophos;i="6.24,174,1774335600"; d="scan'208";a="106333966" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 23:03:40 -0700 X-CSE-ConnectionGUID: 7VA9ccfSQamvHxf8NSJxbg== X-CSE-MsgGUID: MasJ3534QweKVPiGb6JzFA== X-ExtLoop1: 1 Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 May 2026 23:03:35 -0700 Message-ID: <027de4e2-b3a0-4a02-b827-31163388bd6f@linux.intel.com> Date: Fri, 29 May 2026 14:02:50 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/7] PCI/ATS: Ensure pci_ats_supported() is PF-aware for VFs To: Pranjal Shrivastava , iommu@lists.linux.dev, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Joerg Roedel , Will Deacon , Bjorn Helgaas , David Woodhouse , Robin Murphy , Suravee Suthikulpanit , Jason Gunthorpe , Nicolin Chen , David Matlack , Samiullah Khawaja , Daniel Mentz , Pasha Tatashin , Mostafa Saleh , Jason Gunthorpe References: <20260528202353.3422206-1-praan@google.com> <20260528202353.3422206-2-praan@google.com> Content-Language: en-US From: Baolu Lu In-Reply-To: <20260528202353.3422206-2-praan@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/29/26 04:23, Pranjal Shrivastava wrote: > Update pci_ats_supported() to additionally check the associated PF's > status when called on a VF. This ensures that PF-level quirks and > untrusted status are correctly propagated to VFs, providing a robust > support check that aligns with the kernel's PF-centric ATS configuration > model and is immune to the timing of VF-specific fixups. > > Reviewed-by: Jason Gunthorpe > Reviewed-by: Samiullah Khawaja > Reviewed-by: Nicolin Chen > Signed-off-by: Pranjal Shrivastava > --- > drivers/pci/ats.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) Reviewed-by: Lu Baolu