From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793269129; b=5qz/ltT0E87SX8g8bHVwrO4DxVbDuA2kWjo1A4oP2ehuM5n/Wxwyoz97gaCn6AtzC8yT +5Uv0DRRHZnpW+YJzpDNn6yfZtFv3se6ZCpCrplSzKPUIT+0x8z9KZqZXw+pi8hRrStDX zeRCNQPiKxhe6C4R7hzOyV78FQYerDWLMO9iVHrOaxEEDD049GyYiFxgzT53xpx3QSH2h PmHQYV/is1vwu22eyhSyJEaizGN0ZkzCYteli/Uo7C0XnA9gmQJ2L1ecqB3QGHGbIm+Vp ORGySrxr2VVsfF+6C/G+TlZDcGy9swB3CcQJN5R4ijKKJtZCrDiI2slaDXTzu5GgBag== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793269129; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer; bh=TMyNi9h8uZB0CnN21h3FMGgHT3Z+cop+m15S7SnkkEE=; b=KhBbgC8NX4ltHYyuiEt1jEfyWLxK6rgH9uHmnzKLBd+GWc40wYcJJF69xR9BCbKaFbJE NANcUhEP4DNcYsSFPP9YAyd5Jw4ret1ts9fjAi6IKWXtYBrO5vzxHIrJ2c2F5GPGlKt/U xjYve+xJszHb9spJ0kZak0TtUyG9/nxn5nBLFIvW9byk1PFHmbbo+DxxsenT2CZI5Bgx7 tLm7PDhzOTyly8yX6FQChQ5cEpOkX4CzG1ZfndpKT08GS7VG2nTy7cluKk1rONsc2UDOE GCsfYwWwLPEQDVHPZtGFsO4LAxNfoY7okKuXRZULwtj+csXRvAytjOZ2RTgLuBzUjJw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=kLNZ1CIW; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 999B8606A31F; Thu, 29 Oct 2026 10:18:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=kLNZ1CIW Received: by smtp.kernel.org (Postfix) with ESMTPSA id 800F61F01829; Thu, 29 Oct 2026 10:18:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793269129; bh=TMyNi9h8uZB0CnN21h3FMGgHT3Z+cop+m15S7SnkkEE=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=kLNZ1CIW2YxK0uST8iiMQenMa7zmpUsZAyb4dVyOsejE+jvn/l9vgOMmNecd2xd48 jLuQs/kZGYQg+ozRL0n6IhurzDdCEhRo34ZyLlqHTCgjl56zP1w8mAoLGwaHEUlos7 XtKu82hBX81C7OX3yfRMEihSQnbDEBI2nDB5BE+JjQhabRsawia8vcrJ8sEz9TwHaa dtUbAzMsCJdShBOyvNoLtEIOdw2tn8qslCCM+VFfnQBLkn2doBYK8ZhpkAck2GUgT2 U9roVrXu+3qvHtQcvut7xEHw4hDV12vHibzvr+Li4hyvn13zMM43+TVQEF3TCOgmVg rK6RMcRR8tWpA== From: "Mike Rapoport (Microsoft)" Date: Thu, 29 Oct 2026 12:18:38 +0200 Subject: [PATCH 2/2] mm/cma: accept memory of CMA areas reserved at a fixed address X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261029-cma-multi-v1-2-2cbced8b5cb7@kernel.org> References: <20261029-cma-multi-v1-0-2cbced8b5cb7@kernel.org> In-Reply-To: <20261029-cma-multi-v1-0-2cbced8b5cb7@kernel.org> To: Andrew Morton , David Hildenbrand Cc: Kiryl Shutsemau , "Liam R. Howlett" , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org X-Mailer: b4 0.16.1-dev CMA areas allocated from memblock have their memory accepted by memblock_alloc_range_nid(), but areas reserved at a fixed address with memblock_reserve() are not. If a fixed CMA area is requested by the cma=@ command line parameter, it may be in regular RAM and on TDX and SEV-SNP guests it must be accepted. Accept the memory of fixed CMA areas as well, so that all CMA areas are accepted regardless of how they were reserved. Fixes: 75d090fd167a ("x86/tdx: Add unaccepted memory support") Cc: stable@vger.kernel.org Signed-off-by: Mike Rapoport (Microsoft) --- mm/cma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/cma.c b/mm/cma.c index 0035efb1130a5..f61d52796f4ef 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -381,6 +381,8 @@ static int __init cma_fixed_reserve(phys_addr_t base, phys_addr_t size) return -EBUSY; } + accept_memory(base, size); + return 0; } -- 2.53.0