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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16000C433F5 for ; Mon, 24 Jan 2022 23:47:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2362656AbiAXXmp (ORCPT ); Mon, 24 Jan 2022 18:42:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1844616AbiAXXJy (ORCPT ); Mon, 24 Jan 2022 18:09:54 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 06DDEC09F825; Mon, 24 Jan 2022 13:17:58 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B8122B81061; Mon, 24 Jan 2022 21:17:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DABA9C340E4; Mon, 24 Jan 2022 21:17:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643059075; bh=o9mh0CAuKVwblnD04YxsdWNf415LLvY4f8KISait108=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JgXWoP6z7V+LlnZz5VUf1vKVswJB+TN1ZoeeSz3C+08T9JS23ys/e9+SQJ3JX+mBA X8Rg7lGFX5Q3sGMx7jxqpXrKE6OqS/h80q9klHqx92QRCzIHAR2S0thHZV6A0SBVxs xpuHcgdKgTjIDVubGhHNWZ4FXI3UHNrnrrEGGyVM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Maxim Levitsky , Joerg Roedel , Sasha Levin Subject: [PATCH 5.16 0496/1039] iommu/amd: X2apic mode: mask/unmask interrupts on suspend/resume Date: Mon, 24 Jan 2022 19:38:05 +0100 Message-Id: <20220124184141.922088375@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184125.121143506@linuxfoundation.org> References: <20220124184125.121143506@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Maxim Levitsky [ Upstream commit 1980105e3cfc2215c75b4f6b172661d675c467d1 ] Use IRQCHIP_MASK_ON_SUSPEND to make the core irq code to mask the iommu interrupt on suspend and unmask it on the resume. Since now the unmask function updates the INTX settings, that will restore them on resume from s3/s4. Since IRQCHIP_MASK_ON_SUSPEND is only effective for interrupts which are not wakeup sources, remove IRQCHIP_SKIP_SET_WAKE flag and instead implement a dummy .irq_set_wake which doesn't allow the interrupt to become a wakeup source. Fixes: 66929812955bb ("iommu/amd: Add support for X2APIC IOMMU interrupts") Signed-off-by: Maxim Levitsky Link: https://lore.kernel.org/r/20211123161038.48009-5-mlevitsk@redhat.com Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/amd/init.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 9e895bb8086a6..b94822fc2c9f7 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -2104,6 +2104,11 @@ static int intcapxt_set_affinity(struct irq_data *irqd, return 0; } +static int intcapxt_set_wake(struct irq_data *irqd, unsigned int on) +{ + return on ? -EOPNOTSUPP : 0; +} + static struct irq_chip intcapxt_controller = { .name = "IOMMU-MSI", .irq_unmask = intcapxt_unmask_irq, @@ -2111,7 +2116,8 @@ static struct irq_chip intcapxt_controller = { .irq_ack = irq_chip_ack_parent, .irq_retrigger = irq_chip_retrigger_hierarchy, .irq_set_affinity = intcapxt_set_affinity, - .flags = IRQCHIP_SKIP_SET_WAKE, + .irq_set_wake = intcapxt_set_wake, + .flags = IRQCHIP_MASK_ON_SUSPEND, }; static const struct irq_domain_ops intcapxt_domain_ops = { -- 2.34.1