From patchwork Thu Jul 15 22:38:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12381193 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 DBAB8C636C8 for ; Thu, 15 Jul 2021 22:39:17 +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 A9B57613D4 for ; Thu, 15 Jul 2021 22:39:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A9B57613D4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net 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 E395C6E49D; Thu, 15 Jul 2021 22:39:12 +0000 (UTC) Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by gabe.freedesktop.org (Postfix) with ESMTPS id E65B26E455 for ; Thu, 15 Jul 2021 22:39:10 +0000 (UTC) Received: by mail-pf1-x432.google.com with SMTP id 21so7015107pfp.3 for ; Thu, 15 Jul 2021 15:39:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=AXY3KUSW9Nh3jlxZEN6OgRLzanV/GR5AneGVxHmy0Rg=; b=kqUpwV6SpnVPxpNNHUoiua+b0BFXa7TwcPp0f2fdqwmRAxuYmILKe3TS2/6yKzXpJw 9D7ohHP2eJz6O4a7ZQ6sQ3K4uUG9J+elfYONhpfWCshkDUNGFAPfUuJlUjKVcAJeHuUD UiXkQqWxju1BfFv8dwcjtHjxDXn/Z3gA2/Dgys+hnG/pd5lWZjkdO/zhzQngwBOBQWp0 G2EJujXaPeNxbUKU6Bh9H6RHOfL6cZHTqYnoowBZzE9qNvMd+z9JDZFNLlMJrbDS/1er LSexYes86mgbfMmTEquCmw2L/OaG0zJ7Lvyj/k7Kg+RCY/RtYZysJ2gef0ggWzcwycmY ixkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=AXY3KUSW9Nh3jlxZEN6OgRLzanV/GR5AneGVxHmy0Rg=; b=Sy4nl3yjMmgAIDSZldlWxdzGA+q2cZCXJLrmErzVXosxwSgIgxOsAh9mLn1OEcDKxe 6zyk4kt9q2XQMgv9Gts1jaUYsII0QBqBnyiNmQa7vmbHz+ZquURmqXvW5C62NNnfxJQt xLCy2oIxJimmsJNABHDLrWJemzPvYOOjVlUFeBMTki7hwszCzFDb20IAuhoYp+7tAFkv 7Ties6o9YNXEpaULA1A+pJHRzJy07bIMaYEx/9cfaYL7YK/Tib8yAAgeNtqMhCdEQCvu ztQUKsqVgw1ru4tkyDkzz3yV+qkUd+uwOm16h5hY19qG8orTHDxOVP5y2vfbOWOliWdz c6og== X-Gm-Message-State: AOAM533ayP0dhY73fToTO21rrDaLaT3Ce7E6WTydTNn+eMD87Jt0rQDy FzcEiGZTquAOPy3Hmn7sEu2Ojl0ikS3vGw== X-Google-Smtp-Source: ABdhPJzQX8E8UVcB1zrEXImj+Oi23KhE7NSH48pEGzl3eTjznEtBZhLoKoF8NeAqcahNMD2b+QdbZQ== X-Received: by 2002:a05:6a00:1582:b029:333:a366:fe47 with SMTP id u2-20020a056a001582b0290333a366fe47mr2470827pfk.0.1626388749378; Thu, 15 Jul 2021 15:39:09 -0700 (PDT) Received: from omlet.com ([134.134.137.87]) by smtp.gmail.com with ESMTPSA id ft7sm9959459pjb.32.2021.07.15.15.39.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Jul 2021 15:39:09 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 15 Jul 2021 17:38:54 -0500 Message-Id: <20210715223900.1840576-2-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210715223900.1840576-1-jason@jlekstrand.net> References: <20210715223900.1840576-1-jason@jlekstrand.net> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/7] drm/i915/gem: Check object_can_migrate from object_migrate 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: , Cc: Matthew Auld Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" We don't roll them together entirely because there are still a couple cases where we want a separate can_migrate check. For instance, the display code checks that you can migrate a buffer to LMEM before it accepts it in fb_create. The dma-buf import code also uses it to do an early check and return a different error code if someone tries to attach a LMEM-only dma-buf to another driver. However, no one actually wants to call object_migrate when can_migrate has failed. The stated intention is for self-tests but none of those actually take advantage of this unsafe migration. Signed-off-by: Jason Ekstrand Cc: Daniel Vetter Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/gem/i915_gem_object.c | 13 ++----------- .../gpu/drm/i915/gem/selftests/i915_gem_migrate.c | 15 --------------- 2 files changed, 2 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index 9da7b288b7ede..f2244ae09a613 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -584,12 +584,6 @@ bool i915_gem_object_can_migrate(struct drm_i915_gem_object *obj, * completed yet, and to accomplish that, i915_gem_object_wait_migration() * must be called. * - * This function is a bit more permissive than i915_gem_object_can_migrate() - * to allow for migrating objects where the caller knows exactly what is - * happening. For example within selftests. More specifically this - * function allows migrating I915_BO_ALLOC_USER objects to regions - * that are not in the list of allowable regions. - * * Note: the @ww parameter is not used yet, but included to make sure * callers put some effort into obtaining a valid ww ctx if one is * available. @@ -616,11 +610,8 @@ int i915_gem_object_migrate(struct drm_i915_gem_object *obj, if (obj->mm.region == mr) return 0; - if (!i915_gem_object_evictable(obj)) - return -EBUSY; - - if (!obj->ops->migrate) - return -EOPNOTSUPP; + if (!i915_gem_object_can_migrate(obj, id)) + return -EINVAL; return obj->ops->migrate(obj, mr); } diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c index 0b7144d2991ca..28a700f08b49a 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_migrate.c @@ -61,11 +61,6 @@ static int igt_create_migrate(struct intel_gt *gt, enum intel_region_id src, if (err) continue; - if (!i915_gem_object_can_migrate(obj, dst)) { - err = -EINVAL; - continue; - } - err = i915_gem_object_migrate(obj, &ww, dst); if (err) continue; @@ -114,11 +109,6 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww, return err; if (i915_gem_object_is_lmem(obj)) { - if (!i915_gem_object_can_migrate(obj, INTEL_REGION_SMEM)) { - pr_err("object can't migrate to smem.\n"); - return -EINVAL; - } - err = i915_gem_object_migrate(obj, ww, INTEL_REGION_SMEM); if (err) { pr_err("Object failed migration to smem\n"); @@ -137,11 +127,6 @@ static int lmem_pages_migrate_one(struct i915_gem_ww_ctx *ww, } } else { - if (!i915_gem_object_can_migrate(obj, INTEL_REGION_LMEM)) { - pr_err("object can't migrate to lmem.\n"); - return -EINVAL; - } - err = i915_gem_object_migrate(obj, ww, INTEL_REGION_LMEM); if (err) { pr_err("Object failed migration to lmem\n");