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 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 103CCCF9C72 for ; Thu, 20 Nov 2025 17:26:07 +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:References:In-Reply-To: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:List-Owner; bh=pzRNVgh2o0L2ZH++RtGlfEjZNIRYnQnAE4e/sfdNAYU=; b=ZUmlozquloLsdWenP7qj5g6ry0 JXd2P/SwxkIrvsTmieawbKoWwE+xNhHl3/z5AJ6rrgOOMRxrXTxPCek+BwRSELEL6yyIkMvJRf9Ny VLM0PyUo3zD2MOjaoQVAUodcRbt6GSMGmnxZTKhJla1QpeCiTAfjlKre8TpHjn295K800AbO9KC1z AFVXFgUQZ4xSW4KC4ga0/dAfa/gyKEwTxKs/NeMypVmiz2HyPP8juD9ZeVZ0AvwdYehnPu3RA3fyi Lvb16QxSJGtpZRarHegxBBZmQOq62T6V+SbnFKba0H2DNi6SS9qeQPeWbAomcBLCKTx842psW09oV H0tlph4Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vM8Pw-000000075bH-0084; Thu, 20 Nov 2025 17:26:00 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vM8Ps-000000075Y8-2khN for linux-arm-kernel@lists.infradead.org; Thu, 20 Nov 2025 17:25:57 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 5600444278; Thu, 20 Nov 2025 17:25:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35CA2C19421; Thu, 20 Nov 2025 17:25:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763659556; bh=IOHO43jIEbpZ6exgIFp7G66rSWGZrGpoQxbfZnY9qH8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T6noQmbjh2ZSHgRNeHXmad4h7H1wCYx1kSyoQoVbVya7x+TBgCnweEjPNEvvM23tL ACd4InInLMH/QCKhYsvDvyHP9N3xMu84VwQ/rLmtdwKUrnOpdhLGv8sSGnMWG+1gNp RQSJbvfbixUBIzozs4E4riRwGJfAbX1lO7C3R0LSiV9WfD+HWs+iUb793VXBnTxl+6 /GnYVnQ0TUXta0xijqrm6JMR4Sg9voN8ntjvctC3pi8oJwvTBz24J+mbkUEeSI+Hwy 5QaKH9sxEbVoOAlNHcBOQKwcvpFoR8lGA94rV2Bd7gdhbLjcLwcX9Q11NNmttAwTP7 3pRsvWIm2UlgA== 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 4.98.2) (envelope-from ) id 1vM8Pq-00000006y6g-10ZB; Thu, 20 Nov 2025 17:25:54 +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 , Christoffer Dall , Fuad Tabba , Mark Brown Subject: [PATCH v4 02/49] irqchip/gic: Expose CPU interface VA to KVM Date: Thu, 20 Nov 2025 17:24:52 +0000 Message-ID: <20251120172540.2267180-3-maz@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20251120172540.2267180-1-maz@kernel.org> References: <20251120172540.2267180-1-maz@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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, oupton@kernel.org, yuzenghui@huawei.com, christoffer.dall@arm.com, tabba@google.com, broonie@kernel.org 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-20251120_092556_776311_599DAB8F X-CRM114-Status: GOOD ( 14.23 ) 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 Future changes will require KVM to be able to perform deactivations by writing to the physical CPU interface. Add the corresponding VA to the kvm_info structure, and let KVM stash it. Tested-by: Fuad Tabba Signed-off-by: Marc Zyngier --- arch/arm64/kvm/vgic/vgic-v2.c | 1 + drivers/irqchip/irq-gic.c | 3 +++ include/kvm/arm_vgic.h | 3 +++ include/linux/irqchip/arm-vgic-info.h | 2 ++ 4 files changed, 9 insertions(+) diff --git a/arch/arm64/kvm/vgic/vgic-v2.c b/arch/arm64/kvm/vgic/vgic-v2.c index 381673f03c395..441efef80d609 100644 --- a/arch/arm64/kvm/vgic/vgic-v2.c +++ b/arch/arm64/kvm/vgic/vgic-v2.c @@ -385,6 +385,7 @@ int vgic_v2_probe(const struct gic_kvm_info *info) kvm_vgic_global_state.can_emulate_gicv2 = true; kvm_vgic_global_state.vcpu_base = info->vcpu.start; + kvm_vgic_global_state.gicc_base = info->gicc_base; kvm_vgic_global_state.type = VGIC_V2; kvm_vgic_global_state.max_gic_vcpus = VGIC_V2_MAX_CPUS; diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 1269ab8eb726a..ec70c84e9f91d 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -1459,6 +1459,8 @@ static void __init gic_of_setup_kvm_info(struct device_node *node) if (ret) return; + gic_v2_kvm_info.gicc_base = gic_data[0].cpu_base.common_base; + if (static_branch_likely(&supports_deactivate_key)) vgic_set_kvm_info(&gic_v2_kvm_info); } @@ -1620,6 +1622,7 @@ static void __init gic_acpi_setup_kvm_info(void) return; gic_v2_kvm_info.maint_irq = irq; + gic_v2_kvm_info.gicc_base = gic_data[0].cpu_base.common_base; vgic_set_kvm_info(&gic_v2_kvm_info); } diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 7a0b972eb1b12..577723f5599bd 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -59,6 +59,9 @@ struct vgic_global { /* virtual control interface mapping, HYP VA */ void __iomem *vctrl_hyp; + /* Physical CPU interface, kernel VA */ + void __iomem *gicc_base; + /* Number of implemented list registers */ int nr_lr; diff --git a/include/linux/irqchip/arm-vgic-info.h b/include/linux/irqchip/arm-vgic-info.h index a470a73a805aa..67d9d960273b9 100644 --- a/include/linux/irqchip/arm-vgic-info.h +++ b/include/linux/irqchip/arm-vgic-info.h @@ -24,6 +24,8 @@ struct gic_kvm_info { enum gic_type type; /* Virtual CPU interface */ struct resource vcpu; + /* GICv2 GICC VA */ + void __iomem *gicc_base; /* Interrupt number */ unsigned int maint_irq; /* No interrupt mask, no need to use the above field */ -- 2.47.3