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 X-Spam-Level: X-Spam-Status: No, score=-14.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 591A3C433E0 for ; Wed, 6 Jan 2021 15:10:08 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id EA35722BF3 for ; Wed, 6 Jan 2021 15:10:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EA35722BF3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 57D2289CAF; Wed, 6 Jan 2021 15:10:07 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id A53A389CAF for ; Wed, 6 Jan 2021 15:10:06 +0000 (UTC) IronPort-SDR: 63yL4htEcATdQkx6mEW3GcQc4uZGwteejFJnGvnbkUPvU/0cHQAnN6qfJCEcF2N3Frgmh4sWxS Zd+gDqWL3nNA== X-IronPort-AV: E=McAfee;i="6000,8403,9855"; a="174713335" X-IronPort-AV: E=Sophos;i="5.78,480,1599548400"; d="scan'208";a="174713335" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2021 07:10:06 -0800 IronPort-SDR: jaaSzFIDFIMXgiZ0IR8nq+eMNtaPWE5ygLj9aTpLCSAws92rLv6jkMDebxTcoMoM0BYee4fmI9 fQmyZ2AxFCBQ== X-IronPort-AV: E=Sophos;i="5.78,480,1599548400"; d="scan'208";a="422193089" Received: from vbratanx-mobl.ger.corp.intel.com (HELO [10.252.38.40]) ([10.252.38.40]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2021 07:10:05 -0800 To: Chris Wilson , intel-gfx@lists.freedesktop.org References: <20210106123939.18435-1-chris@chris-wilson.co.uk> From: Tvrtko Ursulin Organization: Intel Corporation UK Plc Message-ID: <8b055b6d-e260-e8df-2ef2-b4898b874dc9@linux.intel.com> Date: Wed, 6 Jan 2021 15:10:02 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20210106123939.18435-1-chris@chris-wilson.co.uk> Content-Language: en-US Subject: Re: [Intel-gfx] [PATCH 1/4] drm/i915/selftests: Break out of the lrc layout test after register mismatch X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On 06/01/2021 12:39, Chris Wilson wrote: > AFter detecting a register mismatch between the protocontext and the > image generated by HW, immediately break out of the double loop. > (Otherwise we end up a second configuing error message.) s/configuing/confusing/? No use of dumping all differences? Why it is confusing? Regards, Tvrtko > > Signed-off-by: Chris Wilson > --- > drivers/gpu/drm/i915/gt/selftest_lrc.c | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c > index 3485cb7c431d..920979a89413 100644 > --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c > +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c > @@ -164,7 +164,7 @@ static int live_lrc_layout(void *arg) > > dw = 0; > do { > - u32 lri = hw[dw]; > + u32 lri = READ_ONCE(hw[dw]); > > if (lri == 0) { > dw++; > @@ -197,9 +197,11 @@ static int live_lrc_layout(void *arg) > dw++; > > while (lri) { > - if (hw[dw] != lrc[dw]) { > + u32 offset = READ_ONCE(hw[dw]); > + > + if (offset != lrc[dw]) { > pr_err("%s: Different registers found at dword %d, expected %x, found %x\n", > - engine->name, dw, hw[dw], lrc[dw]); > + engine->name, dw, offset, lrc[dw]); > err = -EINVAL; > break; > } > @@ -211,7 +213,7 @@ static int live_lrc_layout(void *arg) > dw += 2; > lri -= 2; > } > - } while ((lrc[dw] & ~BIT(0)) != MI_BATCH_BUFFER_END); > + } while (!err && (lrc[dw] & ~BIT(0)) != MI_BATCH_BUFFER_END); > > if (err) { > pr_info("%s: HW register image:\n", engine->name); > _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx