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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 D15B8C7618B for ; Thu, 25 Jul 2019 15:38:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A57872166E for ; Thu, 25 Jul 2019 15:38:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="KUjDTrbk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A57872166E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5CRhDVf7AmEcgZgaTRuO0B6RKBSDQD30tZgWvyl5euo=; b=KUjDTrbkqmaB5B o8yCpwbsCkeQBwZ9Kgl9T9M2H6Rm3tAjXOt2AlrERhJ+Yk2WmQVZwUeWCjlVVSoCMlUfwVK+xVruG psvJUt4NJwyWEDXm9kCcCxGYlJdXaatDnRhSBSm/9pLmTHDBroBoPyvkGGwPkIP00H6SeOnnSGWBz LtGDk7NqgX+imoI/Flq6+iPcugMFKCZPrmSlyzVUdRU6F23kVduuzKK1mJRMw5e93TV3LQF/8nTHM TSJ8Noj4ArQlilWuV+3vWscuwrFhVM52WCsOMb6+XrP9ohfkYBxjZ5BnrCdmKS4XYj2ItJM+ALKHF uqHGsjrmklRj4IaZrNqw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqfof-0005x8-Tl; Thu, 25 Jul 2019 15:38:02 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hqfnH-0004pb-GH for linux-arm-kernel@lists.infradead.org; Thu, 25 Jul 2019 15:36:36 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1512C1688; Thu, 25 Jul 2019 08:36:35 -0700 (PDT) Received: from filthy-habits.cambridge.arm.com (filthy-habits.cambridge.arm.com [10.1.197.61]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 64DBE3F71A; Thu, 25 Jul 2019 08:36:33 -0700 (PDT) From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Subject: [PATCH v3 05/10] KVM: arm/arm64: vgic-its: Invalidate MSI-LPI translation cache on disabling LPIs Date: Thu, 25 Jul 2019 16:35:38 +0100 Message-Id: <20190725153543.24386-6-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190725153543.24386-1-maz@kernel.org> References: <20190725153543.24386-1-maz@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190725_083635_606628_98BC1C22 X-CRM114-Status: GOOD ( 10.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Suzuki K Poulose , Marc Zyngier , Andre Przywara , "Raslan, KarimAllah" , Christoffer Dall , Eric Auger , James Morse , "Saidi, Ali" , Zenghui Yu , Julien Thierry Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Marc Zyngier If a vcpu disables LPIs at its redistributor level, we need to make sure we won't pend more interrupts. For this, we need to invalidate the LPI translation cache. Signed-off-by: Marc Zyngier --- virt/kvm/arm/vgic/vgic-mmio-v3.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index 936962abc38d..cb60da48810d 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -192,8 +192,10 @@ static void vgic_mmio_write_v3r_ctlr(struct kvm_vcpu *vcpu, vgic_cpu->lpis_enabled = val & GICR_CTLR_ENABLE_LPIS; - if (was_enabled && !vgic_cpu->lpis_enabled) + if (was_enabled && !vgic_cpu->lpis_enabled) { vgic_flush_pending_lpis(vcpu); + vgic_its_invalidate_cache(vcpu->kvm); + } if (!was_enabled && vgic_cpu->lpis_enabled) vgic_enable_lpis(vcpu); -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel