From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EF8F3C61DD3 for ; Mon, 31 Aug 2026 07:41:52 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9D28110E266; Mon, 31 Aug 2026 07:41:52 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="jrbakBRm"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) by gabe.freedesktop.org (Postfix) with ESMTPS id E028F10E266 for ; Mon, 31 Aug 2026 07:41:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788162111; x=1819698111; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=5qsVsRED4LXgJkWgsVIre+Z7Iy3pOZWZ8j+uKBCIr0A=; b=jrbakBRmm3UsnMbbKuzBmDMYjrDisXWeXUpmoxz3NnBcuwL/skoKuNyU ODQjqjQBui5hVk9DsfvTbncHWkUFIr7ecS6ZgRNY/+TYy8Wof0L+fQPH6 dQh3/KADQtniueOO1J2epOUd7v5Vlikn6Gns9TO96xypZ3xZvfJGudzet i123k3SyIpHr6RFjfX8UsP20YfdwaEtLoLsMArnv/XEBjNRIQ2no9SmuX zBP0y3kG6MSd8xtlau/barJ5+7TJxuXsjMmxFvztmZkyU5CoIduLGbiTU iTNj13wicFfRbHqWNJA9jNRWZhAZBDTmbugrePsvbO2zzmkZMCsqEfFIb w==; X-CSE-ConnectionGUID: rgjk4BtuQOGTusJsx3hIPg== X-CSE-MsgGUID: AUC5aXQNS4aY6bJQ77/hzw== X-IronPort-AV: E=McAfee;i="6800,10657,11891"; a="99161515" X-IronPort-AV: E=Sophos;i="6.25,252,1779174000"; d="scan'208";a="99161515" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 00:41:50 -0700 X-CSE-ConnectionGUID: oGYjlS8xRFKp24cUFD2yhA== X-CSE-MsgGUID: JuxYL03DSK2UF5m7YV4zfA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,252,1779174000"; d="scan'208";a="272517555" Received: from black.igk.intel.com ([10.91.253.5]) by orviesa004.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2026 00:41:49 -0700 Date: Mon, 31 Aug 2026 09:41:45 +0200 From: Raag Jadav To: "Tauro, Riana" Cc: "Poosa, Karthik" , intel-xe@lists.freedesktop.org, rodrigo.vivi@intel.com, anshuman.gupta@intel.com, badal.nilawar@intel.com, sk.anirban@intel.com, mallesh.koujalagi@intel.com, soham.purkait@intel.com Subject: Re: [PATCH 2/2] drm/xe/hwmon: Increase timeout for mailbox power limits Message-ID: References: <20260729171546.3368457-1-karthik.poosa@intel.com> <20260729171546.3368457-3-karthik.poosa@intel.com> <2c61329e-a7d0-4524-b585-5d10fd970ffe@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On Mon, Aug 31, 2026 at 12:39:50PM +0530, Tauro, Riana wrote: > On 31-08-2026 12:24, Poosa, Karthik wrote: > > On 31-08-2026 10:59, Tauro, Riana wrote: > > > On 29-07-2026 22:45, Karthik Poosa wrote: > > > > Mailbox power limit operations can occasionally take longer than the > > > > current 1 ms timeout, causing sporadic failures. Why? > > > > Increase the timeout to 10 ms and rename PL_WRITE_MBX_TIMEOUT_MS to > > > > PL_MBX_TIMEOUT_MS to better reflect its usage. > > > > > > Why is the timeout applicable only for power and not the other > > > attribute reads? > > > > Because the timeout is seen only with mailbox power limit commands only, > > default 1ms timeout wasn't enough here. > > Any reason why this is not seen for the other reads? +1, these things should be coming from a hard spec with valid technical justification and not some random email asking us to do so. Raag