From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4F9052F4328; Thu, 12 Jun 2025 16:41:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749746512; cv=none; b=HxXh/ATH6UKKy9LmGpsYfUgZqCJij8260xheVffJyqCBUIf65eLNU6sbo8ctXD73WTmRn2IWhHrQhdZFZ7jO9R/vyjBw2kSNsiK9fdAd6fTd4zhsEC3MAPrLtpXxzs9cjPVAn6vAzsS4XACsfMjEqtQYOWaLuJVMmzhd79wk7yo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749746512; c=relaxed/simple; bh=5t+OfqRxBNY0otd+hCK8+p6HJn7sVOoMugiU6orqbPU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=R6dLMhCOTq3GweOha1/1EeS+jgq14QioixpbzEduQvNaD9YaE1yeMoKO95ScUHpAoQnhZuXvMOLQLdbSON8rixD9v5itpd6dVJG1J0p06eo3/jCka9jruy3MYYVZqzJUySY4ubFKW8dh+4tU4BcsW8618PD5EYH7GyrNBDb9uRE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=nnqA2QU0; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="nnqA2QU0" Received: from [10.0.14.36] (unknown [70.37.26.35]) by linux.microsoft.com (Postfix) with ESMTPSA id C08C5201C775; Thu, 12 Jun 2025 09:41:45 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C08C5201C775 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1749746505; bh=rAURiPYzIbhtzpwq01PbrWPnhV9LWw4IG8DX+DBis4Y=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=nnqA2QU0+L6Ka+53mgsErhf9aWZLvAG5xLwXHN5bA3B4jzTCWA1ZnQq1u42dJXLEb cTwA5pvgcwMsRvkoQWw2tbnGY/9hanhK0QR8lgC8lFpkBHyqw7pQcYFq003Tzpdydr +BlL/6BByrj2Cfnn75jq8R2ZXTt6Xhh8pJcUu/pg= Message-ID: <57ad1095-89ba-4044-91ce-1ab37bcc79dd@linux.microsoft.com> Date: Thu, 12 Jun 2025 09:41:45 -0700 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/2] PCI: Reduce FLR delay to 10ms for MSFT devices To: Christoph Hellwig Cc: Niklas Cassel , linux-pci@vger.kernel.org, shyamsaini@linux.microsoft.com, code@tyhicks.com, Okaya@kernel.org, bhelgaas@google.com, linux-kernel@vger.kernel.org References: <20250611000552.1989795-1-grwhyte@linux.microsoft.com> <1ccbaac5-7866-42f6-b324-cb9e851579e6@linux.microsoft.com> Content-Language: en-US From: Graham Whyte In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/11/2025 11:31 PM, Christoph Hellwig wrote: > On Wed, Jun 11, 2025 at 01:08:21PM -0700, Graham Whyte wrote: >> We can ask our HW engineers to implement function readiness but we need >> to be able to support exiting products, hence why posting it as a quirk. > > Your report sounds like it works perfectly fine, it's just that you > want to reduce the delay. For that you'll need to stick to the standard > methods instead of adding quirks, which are for buggy hardware that does > not otherwise work. Bjorn, what would you recommend as next steps here?