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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 1BE40C4CECF for ; Mon, 23 Sep 2019 18:26:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E898B20665 for ; Mon, 23 Sep 2019 18:26:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569263190; bh=PYQSpfP3R9Qt4GNq67LYTzixIBSTBWF8HlFGWKRu6ZE=; h=From:To:Cc:Subject:Date:List-ID:From; b=FajMXTchezhl0t4duTKSfSNp70sNIkJ/e2v9Vd3vlDchhK7Mo6jZmBLIuB72AseI1 xKyJ/K21bz5LP3BD68EkMDYZw9eCIFUhCqIkR0w4eRvAhnsn5GEFhQgAtKEyI/4UST ibZRQ1EihOgLMqri8jN6zqnJbmzAepzsGwazxFWg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438242AbfIWS03 (ORCPT ); Mon, 23 Sep 2019 14:26:29 -0400 Received: from foss.arm.com ([217.140.110.172]:46600 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731405AbfIWS02 (ORCPT ); Mon, 23 Sep 2019 14:26:28 -0400 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 ED436142F; Mon, 23 Sep 2019 11:26:27 -0700 (PDT) Received: from big-swifty.lan (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EEC353F694; Mon, 23 Sep 2019 11:26:24 -0700 (PDT) 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 Subject: [PATCH 00/35] irqchip/gic-v4: GICv4.1 architecture support Date: Mon, 23 Sep 2019 19:25:31 +0100 Message-Id: <20190923182606.32100-1-maz@kernel.org> X-Mailer: git-send-email 2.20.1 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 [Apologies for posting this during the merge window, I'm fighting against another deadline which is incompatible with the -rc1 time frame] This rather long series expands the existing GICv4 support to deal with the new GICv4.1 architecture, which comes with a set of major improvements compared to v4.0: - One architectural doorbell per vcpu, instead of one doorbell per VLPI - Doorbell entirely managed by the HW, with an "at most once" delivery guarantee per non-residency phase and only when requested by the hypervisor - A shared memory scheme between ITSs and redistributors, allowing for an optimised residency sequence (the use of VMOVP becomes less frequent) - Support for direct virtual SGI delivery (the injection path still involves the hypervisor), at the cost of losing the active state on SGIs. It shouldn't be a big deal, but some guest operating systems might notice (Linux definitely won't care) On the other hand, public documentation is not available yet, so that's a bit annoying.. The series is roughly organised in 5 parts: (1) A bunch of reworks to make the checking of some features more straightforward, (2) VPE table allocation, new flavours of VMAPP/VMOVP commands (3) v4.1 doorbell management (4) Virtual SGI support (5) Plumbing of virtual SGIs in KVM Note that patch #1 has been previously posted, and forms the base of this work. This has had *very little* testing on a fairly early model, and some behaviours are unexpected (the VSGI feature clearly misbehaves). But it is in a shape that should make it possible to review and even debug. Consider this an opportunity to influence the shape of this code at an early stage! ;-) Marc Zyngier (35): KVM: arm64: vgic-v4: Move the GICv4 residency flow to be driven by vcpu_load/put irqchip/gic-v3-its: Factor out wait_for_syncr primitive irqchip/gic-v3-its: Allow LPI invalidation via the DirectLPI interface irqchip/gic-v3: Detect GICv4.1 supporting RVPEID irqchip/gic-v3: Add GICv4.1 VPEID size discovery irqchip/gic-v3-its: Make is_v4 use a TYPER copy irqchip/gic-v3-its: Kill its->ite_size and use TYPER copy instead irqchip/gic-v3-its: Kill its->device_ids and use TYPER copy instead irqchip/gic-v3-its: Add get_vlpi_map() helper irqchip/gic-v4.1: VPE table (aka GICR_VPROPBASER) allocation irqchip/gic-v4.1: Implement the v4.1 flavour of VMAPP irqchip/gic-v4.1: Don't use the VPE proxy if RVPEID is set irqchip/gic-v4.1: Implement the v4.1 flavour of VMOVP irqchip/gic-v4.1: Plumb skeletal VPE irqchip irqchip/gic-v4.1: Add mask/unmask doorbell callbacks irqchip/gic-v4.1: Add VPE residency callback irqchip/gic-v4.1: Add VPE eviction callback irqchip/gic-v4.1: Add VPE INVALL callback irqchip/gic-v4.1: Suppress per-VLPI doorbell irqchip/gic-v4.1: Allow direct invalidation of VLPIs irqchip/gic-v4.1: Advertise support v4.1 to KVM irqchip/gic-v4.1: Map the ITS SGIR register page irqchip/gic-v4.1: Plumb skeletal VSGI irqchip irqchip/gic-v4.1: Add initial SGI configuration irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks irqchip/gic-v4.1: Plumb get/set_irqchip_state SGI callbacks irqchip/gic-v4.1: Plumb set_vcpu_affinity SGI callbacks irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer irqchip/gic-v4.1: Add VSGI allocation/teardown irqchip/gic-v4.1: Add VSGI property setup irqchip/gic-v4.1: Eagerly vmap vPEs KVM: arm64: GICv4.1: Let doorbells be auto-enabled KVM: arm64: GICv4.1: Add direct injection capability to SGI registers KVM: arm64: GICv4.1: Configure SGIs as HW interrupts KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs arch/arm/include/asm/arch_gicv3.h | 2 + arch/arm64/include/asm/arch_gicv3.h | 1 + drivers/irqchip/irq-gic-v3-its.c | 1099 +++++++++++++++++++++--- drivers/irqchip/irq-gic-v3.c | 25 +- drivers/irqchip/irq-gic-v4.c | 143 ++- include/kvm/arm_vgic.h | 5 +- include/linux/irqchip/arm-gic-common.h | 2 + include/linux/irqchip/arm-gic-v3.h | 75 +- include/linux/irqchip/arm-gic-v4.h | 45 +- virt/kvm/arm/arm.c | 12 +- virt/kvm/arm/vgic/vgic-debug.c | 14 +- virt/kvm/arm/vgic/vgic-mmio-v3.c | 15 +- virt/kvm/arm/vgic/vgic-mmio.c | 88 +- virt/kvm/arm/vgic/vgic-v3.c | 5 + virt/kvm/arm/vgic/vgic-v4.c | 106 ++- virt/kvm/arm/vgic/vgic.c | 4 - virt/kvm/arm/vgic/vgic.h | 2 - 17 files changed, 1466 insertions(+), 177 deletions(-) -- 2.20.1