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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA8EDC433FE for ; Tue, 11 Oct 2022 09:08:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229574AbiJKJIp (ORCPT ); Tue, 11 Oct 2022 05:08:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229477AbiJKJIo (ORCPT ); Tue, 11 Oct 2022 05:08:44 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E0D61182C for ; Tue, 11 Oct 2022 02:08:43 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9E58061162 for ; Tue, 11 Oct 2022 09:08:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 17554C433C1; Tue, 11 Oct 2022 09:08:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1665479322; bh=V07c6zERjtkGzCyja5fYGKCrw2kdM5CZDpl2KPEbxi8=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=NJ/Y9oX5WGsnB0nZbiY/HTUxU3UDYROI6xe/whhhJ+t9Kaq7rXFCXaI5xlc9w8uKR Ks1VX6c5G5XPoDFtlosoBivJ2nq79YQiYko+zsHG95C5nvAENGYRUOHcg+lZa0Lzyt F8Arbh4FHgiLIF6fdbhaOklklWdPjqFCbKsbvRGZ9Q5GdvvmTulcyH0v4aUUASdGrc 82I5D1BxvldNEvRsSkTx+gX8cvfVafMgMAdbDt0cir/2Q4wLHoqzgSEAtm8Gos5h4f qFph11900KX/MCeTck5Xz2Phxo+6cd8T5WPDWAWKvqfl+P9yN2B2+ny/oTmAqDsRYn /CFTSRzC9DXZg== From: Kalle Valo To: Youghandhar Chintala Cc: , , Douglas Anderson Subject: Re: [PATCH] wifi: ath10k: Delay the unmapping of the buffer References: <20220816044310.19101-1-quic_youghand@quicinc.com> Date: Tue, 11 Oct 2022 12:08:36 +0300 In-Reply-To: <20220816044310.19101-1-quic_youghand@quicinc.com> (Youghandhar Chintala's message of "Tue, 16 Aug 2022 10:13:10 +0530") Message-ID: <87lepmohgr.fsf@kernel.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Youghandhar Chintala writes: > We are seeing a corner case where host receiving copy completion for WMI > command though copy engine is processing it. Once host receives the > copy completion, host is unmapping corresponding memory which results > in SMMU fault. To avoid such conditions though host receives copy > completion, as a work around we are adding a delay to unmap the memory > for WMI end point. > > Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.2.0-01387-QCAHLSWMTPLZ-1 > > Tested-by: Douglas Anderson > Signed-off-by: Youghandhar Chintala Please describe the actual bug in more detail (symptoms etc). Basically I would like to see information so that if there's a bug report I can easily pinpoint that this patch fixes it. Currently I have no idea how this bug affects the users. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches