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[2620:137:e000::1:20]) by mx.google.com with ESMTP id z11-20020a170902834b00b00193300007f9si36938778pln.253.2023.01.20.23.48.28; Fri, 20 Jan 2023 23:48:39 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@asahilina.net header.s=default header.b=Jxe2YsZX; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=asahilina.net Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229766AbjAUHnW (ORCPT + 99 others); Sat, 21 Jan 2023 02:43:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229450AbjAUHnV (ORCPT ); Sat, 21 Jan 2023 02:43:21 -0500 Received: from mail.marcansoft.com (marcansoft.com [212.63.210.85]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A77F63E20 for ; Fri, 20 Jan 2023 23:43:19 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: linasend@asahilina.net) by mail.marcansoft.com (Postfix) with ESMTPSA id C8F9541EF0; Sat, 21 Jan 2023 07:43:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=asahilina.net; s=default; t=1674286997; bh=3/HH/e70fh1sArvce9tWJI5BZ4sJUWCbJ03o78bSh0Y=; h=From:To:Cc:Subject:Date; b=Jxe2YsZXl+FVkMrc9H7YYXVt9xACJevd6FMEVBHgpXEHqdlDTasGUSi+2Eu7/3qVC yf1ZRIGV6A4+eUI4qP6RTYSzQmFPvS9i2GAqbuudx94/lPTe8Imzus1ixC9jLsKQ+T VNN6EbtVcFvqVDr+2iAJtt762oicS6z0sntpYUOIxheSycn7+3E7rokapJze/GK6cr FCAIY+IOItdhNhflWB2399Ja02zOSRQhuezRydPEi8hozyV/pLb/nyE8E+7Mad6irq ovX/6LXEPqsTo1Zunc+++j4a4TFIzbIclo+lOXKvFZyWjM01YjminNP9tz9K6yCaGV iKobfTnt7979Q== From: Asahi Lina To: Hector Martin , Sven Peter Cc: Alyssa Rosenzweig , asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Asahi Lina Subject: [PATCH] soc: apple: rtkit: Add a private pointer to apple_rtkit_shmem Date: Sat, 21 Jan 2023 16:42:53 +0900 Message-Id: <20230121074253.9774-1-lina@asahilina.net> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1755617500622484644?= X-GMAIL-MSGID: =?utf-8?q?1755617500622484644?= This allows downstream consumers to keep track of private data for shmem mappings. In particular, the Rust abstraction will use this to safely drop data associated with a mapping when it is unmapped. Signed-off-by: Asahi Lina Reviewed-by: Sven Peter Signed-off-by: Eric Curtin Reviewed-by: Eric Curtin --- include/linux/soc/apple/rtkit.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/soc/apple/rtkit.h b/include/linux/soc/apple/rtkit.h index 62bfa37b5adb..1a9888a1797a 100644 --- a/include/linux/soc/apple/rtkit.h +++ b/include/linux/soc/apple/rtkit.h @@ -22,6 +22,7 @@ * @size: Size of the shared memory buffer. * @iova: Device VA of shared memory buffer. * @is_mapped: Shared memory buffer is managed by the co-processor. + * @private: Private data pointer for the parent driver. */ struct apple_rtkit_shmem { @@ -30,6 +31,7 @@ struct apple_rtkit_shmem { size_t size; dma_addr_t iova; bool is_mapped; + void *private; }; /*