Received: by 2002:ab2:69cc:0:b0:1fd:c486:4f03 with SMTP id n12csp185088lqp; Tue, 11 Jun 2024 00:52:10 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCVMtGIaNXerOJhkd7Zls59/uCmuVj001mEkA+gnDMoIYwLkKKq+AOmk0GwQcnTdDNG8qVU5ndN8CtHjjdO47T0yIH+6YziLEeSXk6niyQ== X-Google-Smtp-Source: AGHT+IFckFI/5R6EfD1Plt+1DP3NE7TPyCR+A/nCE04sN4URJOEUF6E/mqe7gI1YtYqMicwaeZlM X-Received: by 2002:a05:620a:4408:b0:795:4a2b:e1ea with SMTP id af79cd13be357-7954a2bf898mr1340758085a.61.1718092330459; Tue, 11 Jun 2024 00:52:10 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1718092330; cv=pass; d=google.com; s=arc-20160816; b=f0GXQHYyyhHl37Zc7336yH+2Vf+/rsiN2aS1iN9HJoCMQgY6IgmimSKN14Aq8KrJX3 ul3pndZclqMzXY8FaTdAvp8znASn+kshuXs5N5K0jB9EeFyez8ksHgnbOsmEbk1PWWPV Sk7qs8id9oHoSAOmgBa92F6a0AfVrhx8b0Q3pJ0bxbS/RxuxU7Nje3r8dvQr7Qf+Xztk JhxA0RBkEhmcEuoS5st3VIbvyM2U6GEHHHQ2DKEjkMBZ++3bFfjnKJ+6cYHkTFduq+pk fsFx85mX9iu7O9RQ3EXrxnseJjVr4DU4cdlmW1C1A5Qlu8fpwKjKySNE+27mezFHpODU dmmw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :list-unsubscribe:list-subscribe:list-id:precedence:date:message-id :dkim-signature:dkim-signature:dkim-signature:dkim-signature; bh=YY6599wFFzdy0TBNwgmL61p4WEu6o/zs6yDLoP6cq7Y=; fh=sbuUteBaWfQRm28yBC+az1nm+K0esTGs8glJBsKykuc=; b=fQqGkTpJ4TQiIrc2YYGb18c0nlhruNeK57A5S+YGV84vr8hlILYoEkqCJ56R2ad9fz naNhSgb6FxRQvbSY1jqlVzlKdlZgS6AUbSSHNeETvJ1YboJZ0v1i/Fta7tRudfYM4sNr KyqsXPkAAT+LGfX30BJGc05MNyjxPS7qoQkIhGBdK4e9YLIcKvgN8bZvd1rLbYZhB3it zx73vtbBYS0svmLeFegMff4cx0nW7dGttYN+fBQ6gvFBHF/Ry2yYTrul3FEjjoiHdkPK cOfo+g6K8kLnOZeYhFx+Y9JDrReEgMMWHpBlzTkPMdXVzaEyg5eZs3g07YKW2GaLLdoL mNTQ==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="WAvpQg/I"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="WAvpQg/I"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.de dkim=pass dkdomain=suse.de dkim=pass dkdomain=suse.de dmarc=pass fromdomain=suse.de); spf=pass (google.com: domain of linux-kernel+bounces-209422-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-209422-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Return-Path: Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id af79cd13be357-795594d0034si680912585a.457.2024.06.11.00.52.10 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jun 2024 00:52:10 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-209422-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="WAvpQg/I"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b="WAvpQg/I"; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519; arc=pass (i=1 spf=pass spfdomain=suse.de dkim=pass dkdomain=suse.de dkim=pass dkdomain=suse.de dmarc=pass fromdomain=suse.de); spf=pass (google.com: domain of linux-kernel+bounces-209422-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-209422-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 230761C20FA8 for ; Tue, 11 Jun 2024 07:52:10 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 0695D172BCC; Tue, 11 Jun 2024 07:51:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="WAvpQg/I"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="TjHFGjkH"; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b="WAvpQg/I"; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b="TjHFGjkH" Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 54A47172BCA for ; Tue, 11 Jun 2024 07:50:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718092260; cv=none; b=g8cTFy4c+gr48ErWpX9LnNgNf9bcb2iwt26f5MOPRRSBrA3PBwwueaNH0zxYMTAHIC8rG2OhJjXHtHzhbUv1WRJyhbqj6RN7Qj+wq3E2dLQGLzQcjgcdDXzwUMk0nKv9vb/W6I8jZQLdxRnIe8d8zNL6JGdtOi5iE3u9M65utek= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718092260; c=relaxed/simple; bh=v03v89tB+qCtOUTrrFciXdqewSVm/9tuKvS+IPixR8Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ENSPjTTvDsDreSJprUMQbFV11PCg+Ir/V76sMzO216LF0KBiQIZ9V5R7UUFrcI0lH6yTPdQNExWlek86Kyjk0OttN30Jd6WtB3clv2PXoSfL/ez0xXR5SRw294AzhDQbcp8U7GfGqyuxZ6nmFXO07In3hrffrPXUr1MVzAvZEK4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de; spf=pass smtp.mailfrom=suse.de; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=WAvpQg/I; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=TjHFGjkH; dkim=pass (1024-bit key) header.d=suse.de header.i=@suse.de header.b=WAvpQg/I; dkim=permerror (0-bit key) header.d=suse.de header.i=@suse.de header.b=TjHFGjkH; arc=none smtp.client-ip=195.135.223.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=suse.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.de Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 7131720558; Tue, 11 Jun 2024 07:50:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1718092256; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=YY6599wFFzdy0TBNwgmL61p4WEu6o/zs6yDLoP6cq7Y=; b=WAvpQg/IKI2NSa52C1Wb2abehwgJ9jpnupFOpXlQFLKHAFnIjbrDnGesEi0hnK2Wj6nJnt 22DbiMgMEz+Dz3nKBZP98bjMrfLpicgDDMBSmLRgiwcAZgUIcgHwNJndW5O24Ma1aGqrmI jx/p7S6fmO4n48IjxjVzjGbIWHWVDzI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1718092256; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=YY6599wFFzdy0TBNwgmL61p4WEu6o/zs6yDLoP6cq7Y=; b=TjHFGjkHCN6A961POtsgk5EIZtLvRq4sDFByldmfrBRzV0hq4YydCpl3b8BgZlcviiUg17 bVs+d1AjppucbrCQ== Authentication-Results: smtp-out2.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1718092256; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=YY6599wFFzdy0TBNwgmL61p4WEu6o/zs6yDLoP6cq7Y=; b=WAvpQg/IKI2NSa52C1Wb2abehwgJ9jpnupFOpXlQFLKHAFnIjbrDnGesEi0hnK2Wj6nJnt 22DbiMgMEz+Dz3nKBZP98bjMrfLpicgDDMBSmLRgiwcAZgUIcgHwNJndW5O24Ma1aGqrmI jx/p7S6fmO4n48IjxjVzjGbIWHWVDzI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1718092256; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=YY6599wFFzdy0TBNwgmL61p4WEu6o/zs6yDLoP6cq7Y=; b=TjHFGjkHCN6A961POtsgk5EIZtLvRq4sDFByldmfrBRzV0hq4YydCpl3b8BgZlcviiUg17 bVs+d1AjppucbrCQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 31DB713A55; Tue, 11 Jun 2024 07:50:56 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id aZRsCuABaGaUUgAAD6G6ig (envelope-from ); Tue, 11 Jun 2024 07:50:56 +0000 Message-ID: <766908de-922c-4d71-bb04-29dbe4d1d64d@suse.de> Date: Tue, 11 Jun 2024 09:50:55 +0200 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] drm/fbdev-dma: fix getting smem_start To: Peng Fan , "Peng Fan (OSS)" , Maarten Lankhorst , Maxime Ripard , David Airlie , Daniel Vetter , Javier Martinez Canillas Cc: "dri-devel@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" References: <20240604080328.4024838-1-peng.fan@oss.nxp.com> <8f4a6d80-dd3e-422f-88af-d26f50c973ff@suse.de> Content-Language: en-US From: Thomas Zimmermann Autocrypt: addr=tzimmermann@suse.de; keydata= xsBNBFs50uABCADEHPidWt974CaxBVbrIBwqcq/WURinJ3+2WlIrKWspiP83vfZKaXhFYsdg XH47fDVbPPj+d6tQrw5lPQCyqjwrCPYnq3WlIBnGPJ4/jreTL6V+qfKRDlGLWFjZcsrPJGE0 BeB5BbqP5erN1qylK9i3gPoQjXGhpBpQYwRrEyQyjuvk+Ev0K1Jc5tVDeJAuau3TGNgah4Yc hdHm3bkPjz9EErV85RwvImQ1dptvx6s7xzwXTgGAsaYZsL8WCwDaTuqFa1d1jjlaxg6+tZsB 9GluwvIhSezPgnEmimZDkGnZRRSFiGP8yjqTjjWuf0bSj5rUnTGiyLyRZRNGcXmu6hjlABEB AAHNJ1Rob21hcyBaaW1tZXJtYW5uIDx0emltbWVybWFubkBzdXNlLmRlPsLAjgQTAQgAOAIb AwULCQgHAgYVCgkICwIEFgIDAQIeAQIXgBYhBHIX+6yM6c9jRKFo5WgNwR1TC3ojBQJftODH AAoJEGgNwR1TC3ojx1wH/0hKGWugiqDgLNXLRD/4TfHBEKmxIrmfu9Z5t7vwUKfwhFL6hqvo lXPJJKQpQ2z8+X2vZm/slsLn7J1yjrOsoJhKABDi+3QWWSGkaGwRJAdPVVyJMfJRNNNIKwVb U6B1BkX2XDKDGffF4TxlOpSQzdtNI/9gleOoUA8+jy8knnDYzjBNOZqLG2FuTdicBXblz0Mf vg41gd9kCwYXDnD91rJU8tzylXv03E75NCaTxTM+FBXPmsAVYQ4GYhhgFt8S2UWMoaaABLDe 7l5FdnLdDEcbmd8uLU2CaG4W2cLrUaI4jz2XbkcPQkqTQ3EB67hYkjiEE6Zy3ggOitiQGcqp j//OwE0EWznS4AEIAMYmP4M/V+T5RY5at/g7rUdNsLhWv1APYrh9RQefODYHrNRHUE9eosYb T6XMryR9hT8XlGOYRwKWwiQBoWSDiTMo/Xi29jUnn4BXfI2px2DTXwc22LKtLAgTRjP+qbU6 3Y0xnQN29UGDbYgyyK51DW3H0If2a3JNsheAAK+Xc9baj0LGIc8T9uiEWHBnCH+RdhgATnWW GKdDegUR5BkDfDg5O/FISymJBHx2Dyoklv5g4BzkgqTqwmaYzsl8UxZKvbaxq0zbehDda8lv hFXodNFMAgTLJlLuDYOGLK2AwbrS3Sp0AEbkpdJBb44qVlGm5bApZouHeJ/+n+7r12+lqdsA EQEAAcLAdgQYAQgAIAIbDBYhBHIX+6yM6c9jRKFo5WgNwR1TC3ojBQJftOH6AAoJEGgNwR1T C3ojVSkIALpAPkIJPQoURPb1VWjh34l0HlglmYHvZszJWTXYwavHR8+k6Baa6H7ufXNQtThR yIxJrQLW6rV5lm7TjhffEhxVCn37+cg0zZ3j7zIsSS0rx/aMwi6VhFJA5hfn3T0TtrijKP4A SAQO9xD1Zk9/61JWk8OysuIh7MXkl0fxbRKWE93XeQBhIJHQfnc+YBLprdnxR446Sh8Wn/2D Ya8cavuWf2zrB6cZurs048xe0UbSW5AOSo4V9M0jzYI4nZqTmPxYyXbm30Kvmz0rYVRaitYJ 4kyYYMhuULvrJDMjZRvaNe52tkKAvMevcGdt38H4KSVXAylqyQOW5zvPc4/sq9c= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Flag: NO X-Spam-Score: -4.29 X-Spam-Level: X-Spamd-Result: default: False [-4.29 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; XM_UA_NO_VERSION(0.01)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_TO(0.00)[nxp.com,oss.nxp.com,linux.intel.com,kernel.org,gmail.com,ffwll.ch,redhat.com]; TO_DN_EQ_ADDR_SOME(0.00)[]; ARC_NA(0.00)[]; RCPT_COUNT_SEVEN(0.00)[9]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FUZZY_BLOCKED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo] Hi Am 11.06.24 um 03:00 schrieb Peng Fan: >> Subject: Re: [PATCH] drm/fbdev-dma: fix getting smem_start >> >> Hi >> >> Am 04.06.24 um 10:03 schrieb Peng Fan (OSS): >>> From: Peng Fan >>> >>> If 'info->screen_buffer' locates in vmalloc address space, >>> virt_to_page will not be able to get correct results. With >>> CONFIG_DEBUG_VM and CONFIG_DEBUG_VIRTUAL enabled on ARM64, >> there is dump below: >> >> Which graphics driver triggers this bug? > It is NXP i.MX95 DPU driver which is still in NXP downstream repo. Which DRM memory manager does that driver use? I'm asking because if the driver allocates BOs via vmalloc(), should it really use fbdev-dma? Best regards Thomas > > Thanks, > Peng. -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)