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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 91354CA6007 for ; Thu, 8 Oct 2026 14:00:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XWXXDeeV53B/m361hRle3+Xmxm44t7ymweByDk8fCNA=; b=M6NPtmu+9w4tom DrUVRa+8oEsr46nJwohAmqrrS9xw1ci+qcTU3gZex+jN3k7+uTuRFSdyjkwSZ5oPGn8qbNhTgP6bb MBLhyH3Do+0CmvPP4ySf8kVGBveJ6Bls5ogmFOSR0wFbbxTdEkvXOpQecnts0rp0w+Tmj9OJmlov7 efwipKI1PGKdiqp6FDP6pfaueURR4EsOrnx9fCpRQAa6+lz/AWOirUaS0v3C4U56kCJEF2B7Tjn7E P+krycUqthkwkdG5RA7WFx71RvQGiVva8zSXR51gNbYadO6MlfQ41wba+lebMCUfvTKARDDksZY9R h+LbToDcOOj8BSjM62Vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xEofg-00000004UwB-3ftd; Thu, 08 Oct 2026 14:00:32 +0000 Received: from out30-98.freemail.mail.aliyun.com ([115.124.30.98]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xEofc-00000004UuK-167m; Thu, 08 Oct 2026 14:00:31 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1791468024; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=FBuc6cEA3FSukWGLiG7pSKsJM1xn0XaUlxaBeMxT7xM=; b=E9DbqZePubd15kiyoibpupwl1JHanuhxa7e+NMmEo0BSlQHN1fRgq21eukhM6BzkCW3dLtQViaECmD/AjZh2B203+bYPDZ9ymmRuqmiuNU4c7tiTw8nwS57CgSdqxH55bYf/SCOM4RfEdWnpV4drlJy9QAhvaY1Pi8LgLKt9PyY= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R531e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam011083073210;MF=fangyu.yu@linux.alibaba.com;NM=1;PH=DS;RN=19;SR=0;TI=SMTPD_---0XCQTvmE_1791468022; Received: from localhost.localdomain(mailfrom:fangyu.yu@linux.alibaba.com fp:SMTPD_---0XCQTvmE_1791468022 cluster:ay36) by smtp.aliyun-inc.com; Thu, 08 Oct 2026 22:00:23 +0800 From: fangyu.yu@linux.alibaba.com To: tomasz.jeznach@linux.dev, joro@8bytes.org, will@kernel.org, robin.murphy@arm.com, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, jroedel@suse.de, zong.li@sifive.com, andrew.jones@oss.qualcomm.com, jgg@nvidia.com, jgg@ziepe.ca Cc: fangyu.yu@linux.alibaba.com, guoren@kernel.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, kvm-riscv@lists.infradead.org Subject: [RFC PATCH 2/3] iommu/riscv: Extract IRQ forwarding payload validation Date: Thu, 8 Oct 2026 22:00:00 +0800 Message-Id: <20261008140001.94508-3-fangyu.yu@linux.alibaba.com> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20261008140001.94508-1-fangyu.yu@linux.alibaba.com> References: <20261008140001.94508-1-fangyu.yu@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261008_070028_564323_12F94DA9 X-CRM114-Status: UNSURE ( 7.89 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org From: Fangyu Yu Move the owner and MSI address mask/pattern checks from riscv_iommu_ir_activate() into a separate helper so a second forwarding backend can validate the same fields. No functional change. Signed-off-by: Fangyu Yu --- drivers/iommu/riscv/iommu-ir.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/riscv/iommu-ir.c b/drivers/iommu/riscv/iommu-ir.c index b3f0a56475ed..b96baff9986d 100644 --- a/drivers/iommu/riscv/iommu-ir.c +++ b/drivers/iommu/riscv/iommu-ir.c @@ -104,15 +104,10 @@ static void riscv_iommu_ir_set_target(struct riscv_iommu_msipte *msipte, } } -static int riscv_iommu_ir_activate(struct riscv_iommu_msi_table *msi_table, - struct riscv_iommu_device *iommu, - struct riscv_iommu_ir_vcpu_info *vcpu_info) +static int riscv_iommu_ir_validate_vcpu_info(const struct riscv_iommu_ir_vcpu_info *vcpu_info) { u64 pattern = vcpu_info->msi_addr_pattern; u64 mask = vcpu_info->msi_addr_mask; - u64 required_caps = 0; - size_t nr_ptes; - int ret; if (!vcpu_info->owner || (pattern & mask) || ((pattern | mask) & ~RISCV_IOMMU_DC_MSI_ADDR_MASK)) @@ -129,6 +124,21 @@ static int riscv_iommu_ir_activate(struct riscv_iommu_msi_table *msi_table, return -EINVAL; } + return 0; +} + +static int riscv_iommu_ir_activate(struct riscv_iommu_msi_table *msi_table, + struct riscv_iommu_device *iommu, + struct riscv_iommu_ir_vcpu_info *vcpu_info) +{ + u64 required_caps = 0; + size_t nr_ptes; + int ret; + + ret = riscv_iommu_ir_validate_vcpu_info(vcpu_info); + if (ret) + return ret; + nr_ptes = riscv_iommu_ir_nr_ptes(vcpu_info); ret = riscv_iommu_ir_validate_targets(vcpu_info, nr_ptes, &required_caps); -- 2.50.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv