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[2620:137:e000::1:20]) by mx.google.com with ESMTP id g184-20020a636bc1000000b0047586ee5f6asi11682401pgc.857.2022.11.21.06.39.35; Mon, 21 Nov 2022 06:39:50 -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=@linutronix.de header.s=2020 header.b=Zw1WnrzA; dkim=neutral (no key) header.i=@linutronix.de; 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=NONE sp=QUARANTINE dis=NONE) header.from=linutronix.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231670AbiKUOjN (ORCPT + 99 others); Mon, 21 Nov 2022 09:39:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231613AbiKUOhx (ORCPT ); Mon, 21 Nov 2022 09:37:53 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BF5875DAB; Mon, 21 Nov 2022 06:37:52 -0800 (PST) Message-ID: <20221121091326.714126704@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1669041471; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=+EnVp4kAb6M4W1pf5Y3h6BpyD9pQdSwPS/mCr1aM3ww=; b=Zw1WnrzAhW2up7twI+QxubPCa4I1ZK2c3o5rGU6fH4IYZUd/1rEWW1gHXFNBfsYp805KzJ 1tB9TRT1vGnUCqeSAaX5uNniKyDknyfJXOTtPRjVwK+WDLc3JkjNtOaKelsrLDH7HyO4iP +MaZf+Zp4qbyY5LkleRNHMfT8OD3biFFuHNkahjK6YzcpOV/oeibxArFfS3lElaAgUO/qX WiPsT3uT5vxWiTm5RbsZLWKdbXY0Usgyi6rU25PK1CQ3xNgqwlP6xCQUaXd97FuqyTnd+C EcIf08lYKDL5c8A6XD8vWDZqTN+QR7uJim0I2zhoIka84UTGeEjK0senCcQWYw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1669041471; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=+EnVp4kAb6M4W1pf5Y3h6BpyD9pQdSwPS/mCr1aM3ww=; b=ELjM57HbrvBL5+yH7YAMmSzY8RlotfKMsHr7QVOlEx/lM61n/mY523aTsbT2U0eHOphGAq lLyAGCdaanIuhTAQ== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Joerg Roedel , Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Marc Zyngier , Greg Kroah-Hartman , Jason Gunthorpe , Dave Jiang , Alex Williamson , Kevin Tian , Dan Williams , Logan Gunthorpe , Ashok Raj , Jon Mason , Allen Hubbe Subject: [patch V2 04/33] genirq/msi: Add size info to struct msi_domain_info References: <20221121083657.157152924@linutronix.de> MIME-Version: 1.0 Date: Mon, 21 Nov 2022 15:37:51 +0100 (CET) X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS 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?1750116954966275193?= X-GMAIL-MSGID: =?utf-8?q?1750116954966275193?= To allow proper range checking especially for dynamic allocations add a size field to struct msi_domain_info. If the field is 0 then the size is unknown or unlimited (up to MSI_MAX_INDEX) to provide backwards compability. Signed-off-by: Thomas Gleixner --- include/linux/msi.h | 2 ++ 1 file changed, 2 insertions(+) --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -414,6 +414,7 @@ struct msi_domain_ops { * struct msi_domain_info - MSI interrupt domain data * @flags: Flags to decribe features and capabilities * @bus_token: The domain bus token + * @hwsize: The hardware table size (0 if unknown/unlimited) * @ops: The callback data structure * @chip: Optional: associated interrupt chip * @chip_data: Optional: associated interrupt chip data @@ -425,6 +426,7 @@ struct msi_domain_ops { struct msi_domain_info { u32 flags; enum irq_domain_bus_token bus_token; + unsigned int hwsize; struct msi_domain_ops *ops; struct irq_chip *chip; void *chip_data;