From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sender4-op-o11.zoho.com (sender4-op-o11.zoho.com [136.143.188.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F0F12ED870 for ; Sat, 4 Jul 2026 04:47:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.11 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783140447; cv=pass; b=mBjdpiBEIyRl+EevuzVwLUKnxqN0y0uthraLF/DNLKitU1/5aeMvifjYMmJZmGkiMBp7ZlTTjx/A4EBL3Nbq0+ZxK3ErwOLkMEyOIDcL5K67V29sROniClQOkV8aSeOJQ/FyS5E3AZZQ2A7YWMfxv+M6ziUxTzMrSVU9P78ssbM= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783140447; c=relaxed/simple; bh=Tvf5Hc0SK7ZbQaTipFm4SZO869kcuY12ln5Z9N7dQso=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=jyA5W9lfOaLmX7VAcbfEnLNXuGyHoLoIej4hLiMfRl4WYltZtOJcXf5Hs99LAMU56Citss+ovAvMzuqkcwGCKLwENlelhS5EHCIndIF6JHM0amAEVWcbxBEBAHU+/OW0aspiHIf6ci++oK5ppFpyKTvnKraNzcS2WBWdh+Xxal8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b=S9FSdPx5; arc=pass smtp.client-ip=136.143.188.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b="S9FSdPx5" ARC-Seal: i=1; a=rsa-sha256; t=1783140422; cv=none; d=zohomail.com; s=zohoarc; b=THjF/0SP8mksH40DdfewQUbCE4++PJSvZcCaDAjP8A8cZeedgrqtrUTUgocwPqpIc1k/Dx7aNvs9V0GIcy9ot1naRw4c26cmjq7so0yHsFxehN/V5l/zVXSF1MEI0UnOzgn4x97QhbFR3waUMJYRvi5NvMRHUIod7qxLvyLvC+U= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1783140422; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=Atfhk1xwLRF50ypmBJ4bx96WXbHzkEXym39L2zvevJI=; b=UmY7rCksVGe5Zn4rAwmuMP7OaQpPhXRKfK/vb85g9Wbu7rcNyDRlNT5gh5RrLbRFgQq5M536HOPd7kiopszORgxoAJ3uHU0ZwFbg4RPYlYILz7i87aODekaxkJFTFfdERyibHJt4ZbIQPbfO/yeAwHibJwERTMwj3WWq8FcxEkE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=adrian.larumbe@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1783140422; s=zohomail; d=collabora.com; i=adrian.larumbe@collabora.com; h=From:From:Subject:Subject:Date:Date:Message-Id:Message-Id:MIME-Version:Content-Type:Content-Transfer-Encoding:To:To:Cc:Cc:Reply-To; bh=Atfhk1xwLRF50ypmBJ4bx96WXbHzkEXym39L2zvevJI=; b=S9FSdPx57O983F7QdVlRSx2EtnC3/fGejtVXljvxcQ5vr8MlJyh6YozRHcv+PY1x jUBsdH+vtG6LZEaNpFPTcYtZrMR2SQkqRXv//uGwz8gq3TQVvrBHerW7Z7QDGeMLWr5 JN3ciZ94LxKIG12LZPey0I7k1dwB+Rh5fdsvGkek= Received: by mx.zohomail.com with SMTPS id 1783140419931842.8332238353531; Fri, 3 Jul 2026 21:46:59 -0700 (PDT) From: =?utf-8?q?Adri=C3=A1n_Larumbe?= Subject: [PATCH v4 0/3] Add vm_bind param check to ensure no overlap with kbo AS carveout Date: Sat, 04 Jul 2026 05:46:43 +0100 Message-Id: <20260704-vm_bind_checks-v4-0-4705b6ca9f8a@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/23N0QrCIBgF4FcJrzPUzX9bV71HRKj716w1Q0uK2 LvnFkG0Lg+c850nCegtBrJePInHaIN1fQr5ckFMq/oDUlunTAQTwIDnNJ732vb13rRoToHmwAq pFYNKMZJGF4+NvU/gdvfO4aaPaK6jMjZaG67OP6bHyMfeB4dfPHLKaCWBVyUwoTDbGNd1SjuvV sadyXgQxTdRzQiRCC250kpnsin4PyL7IsScyBJRSoQiZw0Ygb/EMAwvNG+uGUgBAAA= X-Change-ID: 20260614-vm_bind_checks-46075ba069a0 To: Boris Brezillon , Steven Price , Liviu Dudau , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Heiko Stuebner , Grant Likely Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, =?utf-8?q?Adri=C3=A1n_Larumbe?= , Sashiko X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2544; i=adrian.larumbe@collabora.com; h=from:subject:message-id; bh=Tvf5Hc0SK7ZbQaTipFm4SZO869kcuY12ln5Z9N7dQso=; b=owEB7QES/pANAwAKAQ4mfkzuU0M9AcsmYgBqSJA/p2vjfOFkajlQfQyiFwbcZsJ0HWzu1c2Kd S8X4+Ot3eGJAbMEAAEKAB0WIQQyQDDowAUXXfk3B6QOJn5M7lNDPQUCakiQPwAKCRAOJn5M7lND PcrLDACLXHsitC7H4fig5p/FN1/1ghsuxJyNg/9h7aSSoS9iasVX9Iz6FWeVrS8Oi4Jir3WP3sw 3AnaKasbHBHNb/JgzBTd0WVslq2Mbf/KoN23T+Ctji8/VOcZCM/uo+Alh/tVabMqoF1gdwNfdt3 tYWZo0u35osxv0bNhgd0NCUzOIeRd1YbwI41XcgJYUElADOhy1WYMG5dsEC1WA9OAHfww1rk91X X79Xh6Te7Y80eCesZzo8udlP65rC0f6xl3BY37HdueABjgeVFEVxR3KsXj9n/UYHiPwblw4oTma +XAt0XrAsc5JEEsCmqBVLXOScXxJUn51tp9JPPgVrbIsRLxRF+EH/PgSmiuLhfAF6riyAMtmZp+ W2tifCYM84DxCFVtlEt0ZEYowwHDBnwmnlBW4O4r2WE66axZJQL8jxMYAoZB/sh4Xdl8ju/eYP4 t/AaAamYtOA1Ek9pUcOsdQ5Ov6oxP+cnwDTGg7v7AOCg9Z/FkokpVdTtewvWLn/ua8qC4= X-Developer-Key: i=adrian.larumbe@collabora.com; a=openpgp; fpr=324030E8C005175DF93707A40E267E4CEE53433D Just a quick check to make sure user-supplied vm_bind regions aren't clashing with the region reserved for kernel bo's. I tried to introduce a similar check for panthor_vm_alloc_va(), to throw back an error when mappings of kernel bo's against specific addresses fall within the auto_va region. However that is not possible, since there's one FW region that must be mapped right at CSF_MCU_SHARED_REGION_START. That is usually not a problem, since drm_mm_insert_node_in_range() will pick the next one available. v3 also comes with an early bind range overflow check for sparse mappings. Signed-off-by: Adrián Larumbe --- Changes in v4: - Deleted commit that passes single operation to panthor_vm_prepare_unmap_op_ctx. - Moved overflow check one step above in the call stack. - Rearranged the commits in the series. - Link to v3: https://patch.msgid.link/20260629-vm_bind_checks-v3-0-85e6740f6c2e@collabora.com Changes in v3: - Fixed off-by-one error for user va range calculations. - Added new commit for panthor_vm_prepare_unmap_op_ctx to take a whole operation. - Added commit with bind range early overflow check. - Link to v2: https://patch.msgid.link/20260619-vm_bind_checks-v2-0-b51abab35f71@collabora.com Changes in v2: - Simplified user VA range with kernel BO range overlap to a single statement. - Link to v1: https://patch.msgid.link/20260616-vm_bind_checks-v1-0-956198602ae3@collabora.com To: Boris Brezillon To: Steven Price To: Liviu Dudau To: Maarten Lankhorst To: Maxime Ripard To: Thomas Zimmermann To: David Airlie To: Simona Vetter To: Heiko Stuebner To: Grant Likely To: Adrián Larumbe Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org --- Adrián Larumbe (3): drm/panthor: Check for sparse binding range overflow drm/panthor: Add vm_bind region with kbo range overlap check drm/panthor: Fix comment to reflect actual struct field name drivers/gpu/drm/panthor/panthor_mmu.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) --- base-commit: 8fca3d8dbebf8d960dad7b10db3cb4a61139454b change-id: 20260614-vm_bind_checks-46075ba069a0 Best regards, -- Adrián Larumbe