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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 737E0CA9EAF for ; Sun, 27 Oct 2019 14:45:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 451F121E6F for ; Sun, 27 Oct 2019 14:45:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572187511; bh=G89DNts1Mk+ZkFZ1zrEi0DKxHIKypo53heYw+LgA7vQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MjIpz4cBhUTOt5Yf7694tPZsIIZCw4UMYoQDOLB4iJ8NK6Vxr5f+QX3HRj6qLPFd5 C0UAg0mrnw9SaDU78SlRu2swgWcdMIgroCgRkf6PwA/8kZfAAEwOFRIBydFyF589vo mktU6yXEmUFfezjxMGcCn4BCEc/8ugkSKTD4YYwE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727376AbfJ0OpK (ORCPT ); Sun, 27 Oct 2019 10:45:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:38098 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726817AbfJ0OpJ (ORCPT ); Sun, 27 Oct 2019 10:45:09 -0400 Received: from localhost.localdomain (82-132-239-15.dab.02.net [82.132.239.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A261E21850; Sun, 27 Oct 2019 14:45:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572187509; bh=G89DNts1Mk+ZkFZ1zrEi0DKxHIKypo53heYw+LgA7vQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OjPTFRunxrGQwBJo0ZIv4wKHz2LQqkPC6bEOFh8gA2tyZ86uJIfSXkBNFpL8epMjw KI7kfgRp11gWDC+WwO77kgKtTtYKdAhSrLkYLh2N2nm6Uc1UoOAKGU6EQBhdZ6CGg9 6377i9zzzw0TTqWGR95PwUm6I8XxnaeFwVW6na4o= From: Marc Zyngier To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Cc: Eric Auger , James Morse , Julien Thierry , Suzuki K Poulose , Thomas Gleixner , Jason Cooper , Lorenzo Pieralisi , Andrew Murray , Zenghui Yu , Jayachandran C , Robert Richter Subject: [PATCH v2 19/36] irqchip/gic-v4.1: Add VPE INVALL callback Date: Sun, 27 Oct 2019 14:42:17 +0000 Message-Id: <20191027144234.8395-20-maz@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191027144234.8395-1-maz@kernel.org> References: <20191027144234.8395-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org GICv4.1 redistributors have a VPE-aware INVALL register. Progress! We can now emulate a guest-requested INVALL without emiting a VINVALL command. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic-v3-its.c | 14 ++++++++++++++ include/linux/irqchip/arm-gic-v3.h | 3 +++ 2 files changed, 17 insertions(+) diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index f7effd453729..10bd156aa042 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -3511,6 +3511,19 @@ static void its_vpe_4_1_deschedule(struct its_vpe *vpe, } } +static void its_vpe_4_1_invall(struct its_vpe *vpe) +{ + void __iomem *rdbase; + u64 val; + + val = GICR_INVLPIR_V; + val |= FIELD_PREP(GICR_INVLPIR_VPEID, vpe->vpe_id); + + /* Target the redistributor this vPE is currently known on */ + rdbase = per_cpu_ptr(gic_rdists->rdist, vpe->col_idx)->rd_base; + gic_write_lpir(val, rdbase + GICR_INVALLR); +} + static int its_vpe_4_1_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) { struct its_vpe *vpe = irq_data_get_irq_chip_data(d); @@ -3526,6 +3539,7 @@ static int its_vpe_4_1_set_vcpu_affinity(struct irq_data *d, void *vcpu_info) return 0; case INVALL_VPE: + its_vpe_4_1_invall(vpe); return 0; default: diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 6fd89d77b2b2..b69f60792554 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -247,6 +247,9 @@ #define GICR_TYPER_COMMON_LPI_AFF GENMASK_ULL(25, 24) #define GICR_TYPER_AFFINITY GENMASK_ULL(63, 32) +#define GICR_INVLPIR_VPEID GENMASK_ULL(47, 32) +#define GICR_INVLPIR_V GENMASK_ULL(63, 63) + #define GIC_V3_REDIST_SIZE 0x20000 #define LPI_PROP_GROUP1 (1 << 1) -- 2.20.1