From patchwork Sun Jan 12 17:08:28 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 13936486 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 27C35E77188 for ; Sun, 12 Jan 2025 17:11:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=mpBu9RavHdcH7vWc/kdhsQ489MwQZIDsWif440iCdUs=; b=yrTaeSxVKDqEaRZZZp8u6iq4T9 xqsd5oicx6SF0j2KWuZxQCbzF5uZ8wrRJ62rX9mAzGUZ29KCPnJ+y9cT7uE/C3HpGyIo3DPSf+mjz YJWbfYKhY/50yPyxMZWHyo5pBrR+dnHLurulboIwwg5DWd2ZS0CXDh4OP6SIKbxUsNs7xZoCsm0fY UE/k7Th/A65nGngl1p1FIq8J/PPZwBidf0kNFdAL1X/yJ6v/uKHsZShHaYotO3IGWzc8/l1dsdKKc ZaFopXHcEISS/h4afr5/QY5f7R7oofdXaLYQmsAE3ZvAKCS/O7BuLiCYdWY6Jh6HV3CgfIbSG1XYx ZY6VCTvQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tX1Ul-000000038NA-1YAt; Sun, 12 Jan 2025 17:11:27 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tX1SG-000000037et-259b for linux-arm-kernel@lists.infradead.org; Sun, 12 Jan 2025 17:08:53 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 1C7E0A40388; Sun, 12 Jan 2025 17:07:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 94E75C4CEDF; Sun, 12 Jan 2025 17:08:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1736701730; bh=ltGcXV/WVvzdPg+NYIBes+nZMKBH831xK6fnn/akLnw=; h=From:To:Cc:Subject:Date:From; b=Di8vsgyGqxtp03nq8SuQk1tSaUAfb16RYfkJB86Vj/8hRf84jXguQD+rzBjLwyo3Y mhl9DqBJnbX75Clu9loN59d0VU0PG0l7cdWDUvUdN8VDjmhQzbVd/eJQg97GIbc+WN 5WgKzK8OHcIccXgwp7HXFoHAdnT4lClo4KUWpK1KqvHqNQcVemIe7iZ5f7TMaj0NWL Rnv8EKGAjXFC9YQ1OMwAYIhThdd7kv1D4fraUPrFbuFmL9MjFruh1HnjWQWK+Q+0rd K3TDIhLkbzY00nQGbNf41MUTYkNLtH0iUxf1DMkYjEcIbIumePk+/zZ+g9IuZ+LFhA yu7Ufz6sgcmqg== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1tX1SC-00BNxR-CH; Sun, 12 Jan 2025 17:08:48 +0000 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: Joey Gouly , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Andre Przywara , Eric Auger Subject: [PATCH v2 00/17] KVM: arm64: Add NV GICv3 support Date: Sun, 12 Jan 2025 17:08:28 +0000 Message-Id: <20250112170845.1181891-1-maz@kernel.org> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, andre.przywara@arm.com, eric.auger@redhat.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250112_090852_659309_DF48272E X-CRM114-Status: GOOD ( 12.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Here's a respin of the NV support for GICv3. The integration branch containing this (and the rest of the NV stack) is still at [2]. * From v1 [1]: - Fix the default value for the MI INTID to PPI9, instead of something fairly random... - Fail KVM initialisation if asking for NV on HW without a virtual GICv3. [1] https://lore.kernel.org/r/20241217151331.934077-1-maz@kernel.org [2] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=kvm-arm64/nv-next Andre Przywara (1): KVM: arm64: nv: Allow userland to set VGIC maintenance IRQ Jintack Lim (1): KVM: arm64: nv: Respect virtual HCR_EL2.TWx setting Marc Zyngier (13): arm64: sysreg: Add layout for ICH_HCR_EL2 arm64: sysreg: Add layout for ICH_VTR_EL2 arm64: sysreg: Add layout for ICH_MISR_EL2 KVM: arm64: nv: Load timer before the GIC KVM: arm64: nv: Add ICH_*_EL2 registers to vpcu_sysreg KVM: arm64: nv: Plumb handling of GICv3 EL2 accesses KVM: arm64: nv: Sanitise ICH_HCR_EL2 accesses KVM: arm64: nv: Nested GICv3 emulation KVM: arm64: nv: Handle L2->L1 transition on interrupt injection KVM: arm64: nv: Add Maintenance Interrupt emulation KVM: arm64: nv: Propagate used_lrs between L1 and L0 contexts KVM: arm64: nv: Fold GICv3 host trapping requirements into guest setup KVM: arm64: nv: Fail KVM init if asking for NV without GICv3 Oliver Upton (2): KVM: arm64: Move host SVE/SME state flags out of vCPU KVM: arm64: nv: Request vPE doorbell upon nested ERET to L2 .../virt/kvm/devices/arm-vgic-v3.rst | 12 +- arch/arm64/include/asm/kvm_emulate.h | 13 + arch/arm64/include/asm/kvm_host.h | 71 ++- arch/arm64/include/asm/kvm_hyp.h | 2 + arch/arm64/include/asm/sysreg.h | 30 -- arch/arm64/include/uapi/asm/kvm.h | 1 + arch/arm64/kvm/Makefile | 2 +- arch/arm64/kvm/arm.c | 20 +- arch/arm64/kvm/emulate-nested.c | 18 +- arch/arm64/kvm/fpsimd.c | 12 +- arch/arm64/kvm/handle_exit.c | 6 +- arch/arm64/kvm/hyp/vgic-v3-sr.c | 16 +- arch/arm64/kvm/nested.c | 12 + arch/arm64/kvm/sys_regs.c | 95 +++- arch/arm64/kvm/vgic-sys-reg-v3.c | 8 +- arch/arm64/kvm/vgic/vgic-init.c | 29 ++ arch/arm64/kvm/vgic/vgic-kvm-device.c | 29 +- arch/arm64/kvm/vgic/vgic-v3-nested.c | 409 ++++++++++++++++++ arch/arm64/kvm/vgic/vgic-v3.c | 44 +- arch/arm64/kvm/vgic/vgic-v4.c | 18 +- arch/arm64/kvm/vgic/vgic.c | 38 ++ arch/arm64/kvm/vgic/vgic.h | 6 + arch/arm64/tools/sysreg | 48 ++ drivers/irqchip/irq-apple-aic.c | 8 +- include/kvm/arm_vgic.h | 10 + tools/arch/arm/include/uapi/asm/kvm.h | 1 + tools/arch/arm64/include/asm/sysreg.h | 30 -- 27 files changed, 855 insertions(+), 133 deletions(-) create mode 100644 arch/arm64/kvm/vgic/vgic-v3-nested.c