From patchwork Thu Jan 19 23:44:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gavin Shan X-Patchwork-Id: 13108963 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 7E242C46467 for ; Thu, 19 Jan 2023 23:46:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230291AbjASXp6 (ORCPT ); Thu, 19 Jan 2023 18:45:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230198AbjASXps (ORCPT ); Thu, 19 Jan 2023 18:45:48 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 678489F3A7 for ; Thu, 19 Jan 2023 15:45:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1674171901; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=O26wXFwfbNKvM1Y0zBYnBKMX3ek+hLU/5IsgmYQVXCM=; b=cY50m2btmzgGftu2cjElblqkO8HwMGuMuDP1GkZWEfv0nnqkj9CLEnLoV014HmZMRzSt2l OGTTKP5YO3jb55H7bhm46Qwlpt3tJItsdYZwPJI768kmcwb2VthzkluGfRA6HgfvW5/aD/ InJRqkkyCQbkpSt9PIkBSCWNSV/qWHg= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-647-X1kbE4T6MuiqRklvwNWn7Q-1; Thu, 19 Jan 2023 18:44:56 -0500 X-MC-Unique: X1kbE4T6MuiqRklvwNWn7Q-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 161D63806104; Thu, 19 Jan 2023 23:44:55 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-98.bne.redhat.com [10.64.54.98]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CABE72166B2A; Thu, 19 Jan 2023 23:44:47 +0000 (UTC) From: Gavin Shan To: kvmarm@lists.linux.dev Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, pbonzini@redhat.com, corbet@lwn.net, maz@kernel.org, oliver.upton@linux.dev, will@kernel.org, gshan@redhat.com, ricarkol@google.com, eric.auger@redhat.com, yuzhe@nfschina.com, renzhengeek@gmail.com, reijiw@google.com, ardb@kernel.org, Julia.Lawall@inria.fr, yuzenghui@huawei.com, seanjc@google.com, shan.gavin@gmail.com Subject: [PATCH v2 0/3] Improve dirty ring warning report Date: Fri, 20 Jan 2023 07:44:02 +0800 Message-Id: <20230119234405.349644-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org It has been known case where no running VCPU context exists when the vgic/its tables are saved. There are other two unknown cases where we don't have the running VCPU context: (a) restore vgic3 LPI pending status. (b) restoring vgic3 pending tables. PATCH[1] adds unified helper vgic_write_guest_lock() PATCH[2 - 3] allows no-running-vcpu context for (a) and (b) v1: https://lore.kernel.org/kvmarm/20230116040405.260935-1-gshan@redhat.com/T/#t Changelog ========= v2: * Add unified helper vgic_write_guest_lock() (Oliver) * Dropped two patches to refactor mark_page_dirty_in_slot() (Sean) Gavin Shan (3): KVM: arm64: Add helper vgic_write_guest_lock() KVM: arm64: Allow no running vcpu on restoring vgic3 LPI pending status KVM: arm64: Allow no running vcpu on saving vgic3 pending table Documentation/virt/kvm/api.rst | 10 +++++++--- arch/arm64/kvm/vgic-sys-reg-v3.c | 1 + arch/arm64/kvm/vgic/vgic-irqfd.c | 1 + arch/arm64/kvm/vgic/vgic-its.c | 13 +++++-------- arch/arm64/kvm/vgic/vgic-mmio-v2.c | 1 + arch/arm64/kvm/vgic/vgic-mmio.c | 1 + arch/arm64/kvm/vgic/vgic-v3.c | 4 ++-- arch/arm64/kvm/vgic/vgic-v4.c | 1 + arch/arm64/kvm/vgic/vgic.c | 1 + arch/arm64/kvm/vgic/vgic.h | 13 +++++++++++++ include/kvm/arm_vgic.h | 2 +- 11 files changed, 34 insertions(+), 14 deletions(-) Reviewed-by: Oliver Upton