From patchwork Thu Dec 10 14:26:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 341819 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43BACC4361B for ; Thu, 10 Dec 2020 19:28:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EABCD229C4 for ; Thu, 10 Dec 2020 19:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390353AbgLJT1m (ORCPT ); Thu, 10 Dec 2020 14:27:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:38456 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727700AbgLJOa1 (ORCPT ); Thu, 10 Dec 2020 09:30:27 -0500 From: Greg Kroah-Hartman Authentication-Results: mail.kernel.org; dkim=permerror (bad message/signature format) To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jerry Snitselaar , Suravee Suthikulpanit , Will Deacon Subject: [PATCH 4.9 36/45] iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs Date: Thu, 10 Dec 2020 15:26:50 +0100 Message-Id: <20201210142604.134660122@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201210142602.361598591@linuxfoundation.org> References: <20201210142602.361598591@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Suravee Suthikulpanit commit 4165bf015ba9454f45beaad621d16c516d5c5afe upstream. According to the AMD IOMMU spec, the commit 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries") also requires the interrupt table length (IntTabLen) to be set to 9 (power of 2) in the device table mapping entry (DTE). Fixes: 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries") Reported-by: Jerry Snitselaar Signed-off-by: Suravee Suthikulpanit Reviewed-by: Jerry Snitselaar Link: https://lore.kernel.org/r/20201207091920.3052-1-suravee.suthikulpanit@amd.com Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- drivers/iommu/amd_iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3661,7 +3661,7 @@ static struct irq_chip amd_ir_chip; #define DTE_IRQ_PHYS_ADDR_MASK (((1ULL << 45)-1) << 6) #define DTE_IRQ_REMAP_INTCTL (2ULL << 60) -#define DTE_IRQ_TABLE_LEN (8ULL << 1) +#define DTE_IRQ_TABLE_LEN (9ULL << 1) #define DTE_IRQ_REMAP_ENABLE 1ULL static void set_dte_irq_entry(u16 devid, struct irq_remap_table *table)