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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9695CC9830E for ; Thu, 24 Sep 2026 10:09:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B3C6710F431; Thu, 24 Sep 2026 10:09:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="dnSLogll"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id F329B10F431 for ; Thu, 24 Sep 2026 10:09:29 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id A1F2C43D1F; Thu, 24 Sep 2026 10:09:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 507301F000FF; Thu, 24 Sep 2026 10:09:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790244569; bh=T/L8GH36WphB4FWEap/OQWo2XNq0RD33mRMiQ8zqE3c=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=dnSLogllfOwGPjiiYgYeYNLUbV922KBGPQBr1iWfsc0tB53dUpUKxf7Bdtcpcr3bI N/yMdNt2Ov0UkVr3MhgwO2+hKGw0VJvasN8PtaGsg7DTl5Ql1ufzTr95NdJDCRfBOD wRMGS47TdnCWOSqXI+wAq/TqxOS5zw8/ZLyamBfgIKhWLJU98AI0JXzOWvht07ccMo 2JB/877rqVQmvUlpiMOQYNo009UWntXGbqTXDczrJzMPMIo32vZaRkqz6B5foRNisc tn0L4hnJrri/j4++dOckyGH9o5Ual1j5zyEjqvpx9L8hqj3USKaRp7UJIrXQt3YkOi q/ADwv496KpUg== From: "Aneesh Kumar K.V (Arm)" To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev Cc: "Aneesh Kumar K.V (Arm)" , Andrew Morton , Baoquan He , Mike Rapoport , Pasha Tatashin , Pratyush Yadav , Catalin Marinas , =?UTF-8?q?Christian=20K=C3=B6nig?= , Jason Gunthorpe , Joerg Roedel , Marc Zyngier , Marek Szyprowski , Robin Murphy , Steven Price , Sumit Semwal , Suzuki K Poulose , Thomas Gleixner , Will Deacon , Russell King , Benjamin Gaignard , Brian Starkey , John Stultz , Mark Rutland , Radu Rendec , "T.J. Mercier" , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Ritesh Harjani , Shrikanth Hegde , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Kiryl Shutsemau , Rick Edgecombe , "K . Y . Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Paolo Bonzini , Vitaly Kuznetsov , Andy Lutomirski , Peter Zijlstra , dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v8 13/14] mm: Assert CoCo shared allocations may sleep Date: Thu, 24 Sep 2026 15:35:28 +0530 Message-ID: <20260924100529.1398790-14-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260924100529.1398790-1-aneesh.kumar@kernel.org> References: <20260924100529.1398790-1-aneesh.kumar@kernel.org> 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On platforms with memory encryption, alloc_cc_shared_pages_node() transitions the allocated memory to the shared state. set_memory_decrypted() may sleep, so the transition must run from a sleepable context. Cc: Andrew Morton Signed-off-by: Aneesh Kumar K.V (Arm) --- mm/cc_shared.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/cc_shared.c b/mm/cc_shared.c index 9eb79832a702..6f68a3f44ef8 100644 --- a/mm/cc_shared.c +++ b/mm/cc_shared.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -106,6 +107,8 @@ static int __alloc_cc_shared_pages_node(int nid, gfp_t gfp, unsigned int order; int ret; + might_sleep(); + ret = cc_shared_calc_layout(requested, &layout); if (ret) return ret; -- 2.43.0