Message ID | 20210609174418.249585-13-jason@jlekstrand.net (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=hiWS=LD=lists.freedesktop.org=dri-devel-bounces@kernel.org> 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=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 28288C48BCF for <dri-devel@archiver.kernel.org>; Wed, 9 Jun 2021 17:45:01 +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 EEB67613BD for <dri-devel@archiver.kernel.org>; Wed, 9 Jun 2021 17:45:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EEB67613BD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BA56E6EABE; Wed, 9 Jun 2021 17:44:46 +0000 (UTC) Received: from mail-pg1-x52d.google.com (mail-pg1-x52d.google.com [IPv6:2607:f8b0:4864:20::52d]) by gabe.freedesktop.org (Postfix) with ESMTPS id D4BA86EAB2 for <dri-devel@lists.freedesktop.org>; Wed, 9 Jun 2021 17:44:44 +0000 (UTC) Received: by mail-pg1-x52d.google.com with SMTP id o9so17313802pgd.2 for <dri-devel@lists.freedesktop.org>; Wed, 09 Jun 2021 10:44:44 -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=p9LihMbkz0D/b2xxGApls+quCG+XTK2bjRKq93kZNxc=; b=PSgQB/YHZuvFwR8mOo+24INTrD9lsmkpetu2QnUVOgbarZDlvXm/ZeaOtIQZZ+fXO/ x+UlPXnhrEI2Ajp6zrO2qa2kRn/utazjU6Lo2vcxV9Dx8h77jfdjDUHpODWA8yj/xwl4 WVnZgm5g/JqdoTanHm1q96UVCZSqSqGMkecwn8pDytTuWEvZvjWbvJxzyfxJlOMExpaX nzagp5vraI30dIMnX4dKbk2K2TaWJtT+XorBxzZ8bjeabX6sa7uELoACbIPmgEHBb9co UMzEQTSyj4042ZANeWyq0GHofOxYb4WPKRY+MVXoArr32yIyiQBURg+8pC5C6rZapGbK qnPw== 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=p9LihMbkz0D/b2xxGApls+quCG+XTK2bjRKq93kZNxc=; b=P3wHQBAoLHqEeY3latiSQPYsIGBQicXx0eye2rzm8kUbnfNALXzOxhbz8blwS+pHqy TQ2xRfYRmgwIlGCxtLRg53mtloL9rkQpz8l/1EUXziBZgCoBBhRxJ9SI4+5qqlA6GUhX p24b5bf5PTnsZMSr+0V586T3/r8oB5EiP/S7JS6iJElTucNJnQFVFlS+/JDSLYyFkytS 3rXiEhgwsa212GrgRX4eL30h7oW0jepoKKmHPy+qnc3rt+uiBnBvqdj/F6cQsgt1PTqz Aj9XNKZ24klKBv3baPwOtH96rvE6eCXJnAQbU2OKeTb00WhcwZj64UapYIFLzcylhIht LJzw== X-Gm-Message-State: AOAM531B+cGasXXfQFKCqcrcMdIg0TK52piny0Ip8hNdsHXTuyyIf79Q GAI97RzwUydkSDbrGu2Aj39Y6rtM2Ol63w== X-Google-Smtp-Source: ABdhPJx3zyxQBM7eFLkCc0WRAUboQ3OAY042f5+qRWsYx5RpSP5oN+VLx7VixFHDQERMnIhiXlCGJA== X-Received: by 2002:a62:5547:0:b029:2ec:8f20:4e2 with SMTP id j68-20020a6255470000b02902ec8f2004e2mr914243pfb.71.1623260684060; Wed, 09 Jun 2021 10:44:44 -0700 (PDT) Received: from omlet.lan (jfdmzpr04-ext.jf.intel.com. [134.134.137.73]) by smtp.gmail.com with ESMTPSA id b10sm208619pfi.122.2021.06.09.10.44.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Jun 2021 10:44:43 -0700 (PDT) From: Jason Ekstrand <jason@jlekstrand.net> To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH 12/31] drm/i915/gem: Disallow creating contexts with too many engines Date: Wed, 9 Jun 2021 12:43:59 -0500 Message-Id: <20210609174418.249585-13-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210609174418.249585-1-jason@jlekstrand.net> References: <20210609174418.249585-1-jason@jlekstrand.net> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development <dri-devel.lists.freedesktop.org> List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe> List-Archive: <https://lists.freedesktop.org/archives/dri-devel> List-Post: <mailto:dri-devel@lists.freedesktop.org> List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help> List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Jason Ekstrand <jason@jlekstrand.net> Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org> |
Series |
drm/i915/gem: ioctl clean-ups (v6)
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expand
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diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 5eca91ded3423..0ba8506fb966f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1639,11 +1639,11 @@ set_engines(struct i915_gem_context *ctx, return -EINVAL; } - /* - * Note that I915_EXEC_RING_MASK limits execbuf to only using the - * first 64 engines defined here. - */ num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines); + /* RING_MASK has no shift so we can use it directly here */ + if (num_engines > I915_EXEC_RING_MASK + 1) + return -EINVAL; + set.engines = alloc_engines(num_engines); if (!set.engines) return -ENOMEM;