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 X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 84AB0C388F7 for ; Tue, 3 Nov 2020 13:21:41 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DEFE0206CA for ; Tue, 3 Nov 2020 13:21:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DEFE0206CA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 5991D87243; Tue, 3 Nov 2020 13:21:40 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0PcgpShzmjN1; Tue, 3 Nov 2020 13:21:39 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id C4DD08723C; Tue, 3 Nov 2020 13:21:39 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id AA906C088B; Tue, 3 Nov 2020 13:21:39 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id C66B5C0051 for ; Tue, 3 Nov 2020 13:21:37 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id ADA9187243 for ; Tue, 3 Nov 2020 13:21:37 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NMSNtFVhJQMn for ; Tue, 3 Nov 2020 13:21:37 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by hemlock.osuosl.org (Postfix) with ESMTPS id 11F738723C for ; Tue, 3 Nov 2020 13:21:37 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id 517183A5; Tue, 3 Nov 2020 14:21:35 +0100 (CET) Date: Tue, 3 Nov 2020 14:21:34 +0100 From: Joerg Roedel To: Suravee Suthikulpanit Subject: Re: [PATCH] iommu/amd: Increase interrupt remapping table limit to 512 entries Message-ID: <20201103132133.GF22888@8bytes.org> References: <20201015025002.87997-1-suravee.suthikulpanit@amd.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20201015025002.87997-1-suravee.suthikulpanit@amd.com> User-Agent: Mutt/1.10.1 (2018-07-13) Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Thu, Oct 15, 2020 at 02:50:02AM +0000, Suravee Suthikulpanit wrote: > Certain device drivers allocate IO queues on a per-cpu basis. > On AMD EPYC platform, which can support up-to 256 cpu threads, > this can exceed the current MAX_IRQ_PER_TABLE limit of 256, > and result in the error message: > > AMD-Vi: Failed to allocate IRTE > > This has been observed with certain NVME devices. > > AMD IOMMU hardware can actually support upto 512 interrupt > remapping table entries. Therefore, update the driver to > match the hardware limit. > > Please note that this also increases the size of interrupt remapping > table to 8KB per device when using the 128-bit IRTE format. > > Signed-off-by: Suravee Suthikulpanit > --- > drivers/iommu/amd/amd_iommu_types.h | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) Applied for 5.10, thanks. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu