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=-3.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 07167CA9EAF for ; Sun, 27 Oct 2019 14:43:04 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 7413221D7F for ; Sun, 27 Oct 2019 14:43:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="lY2qHe/i" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7413221D7F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id DB91E4A830; Sun, 27 Oct 2019 10:43:02 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@kernel.org Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9mxcg6rH2B-q; Sun, 27 Oct 2019 10:43:00 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 38AB54AC66; Sun, 27 Oct 2019 10:43:00 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 277764A830 for ; Sun, 27 Oct 2019 10:42:59 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4aRjEL4FoXor for ; Sun, 27 Oct 2019 10:42:58 -0400 (EDT) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id D33474A54B for ; Sun, 27 Oct 2019 10:42:57 -0400 (EDT) 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 3EC9C214AF; Sun, 27 Oct 2019 14:42:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572187376; bh=Z87iQ8r/Zs8QcHm3AWQm907d97xyGfDqeydhOv6+qW0=; h=From:To:Cc:Subject:Date:From; b=lY2qHe/iLt950wPLoFxO3l+pqV07HyjzDcZOOSGPuoTg2qpjUodwg/p6vq6ZV82E3 LDg8F45yQf1Twd30WPOHlGJduXqVa/X584wgbYFmqF2MASA/VH0UREfNpM7BS3JJGI ymIEj8EX9q/MBXSmohYdvehoXOJDBx/N6trlOwM8= From: Marc Zyngier To: kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Subject: [PATCH v2 00/36] irqchip/gic-v4: GICv4.1 architecture support Date: Sun, 27 Oct 2019 14:41:58 +0000 Message-Id: <20191027144234.8395-1-maz@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Cc: Lorenzo Pieralisi , Jason Cooper , Robert Richter , Jayachandran C , Thomas Gleixner X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu 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 Notes: - This series has uncovered a behaviour that looks like a HW bug on the Cavium ThunderX (aka TX1) platform (see patch #10). I'd very much welcome some clarification from the Marvell/Cavium folks on Cc, as well as an official erratum number if this happens to be an actual bug - I plan to take the first seven patches into 5.5 in order to reduce the size of the backlog: * patch #1 and #3 are good performance optimisations * patches #4 through to #7 are nice cleanups Do shout if you see any issue with this. * From v1: - A bunch of minor reworks after Zenghui Yu's review - A workaround for what looks like a new and unexpected TX1 bug - A subtle reorder of the series so that some patches can go in early Marc Zyngier (36): 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-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-v3: Detect GICv4.1 supporting RVPEID irqchip/gic-v3: Add GICv4.1 VPEID size discovery irqchip/gic-v3: Workaround Cavium TX1 erratum when reading GICD_TYPER2 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 | 1102 +++++++++++++++++++++--- drivers/irqchip/irq-gic-v3.c | 46 +- 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, 1492 insertions(+), 175 deletions(-) -- 2.20.1 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm