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From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org,
	kvmarm@lists.cs.columbia.edu
Cc: James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Eric Auger <eric.auger@redhat.com>,
	Hector Martin <marcan@marcan.st>,
	Mark Rutland <mark.rutland@arm.com>,
	kernel-team@android.com
Subject: [PATCH v3 9/9] irqchip/apple-aic: Advertise some level of vGICv3 compatibility
Date: Mon, 10 May 2021 14:48:24 +0100	[thread overview]
Message-ID: <20210510134824.1910399-10-maz@kernel.org> (raw)
In-Reply-To: <20210510134824.1910399-1-maz@kernel.org>

The CPUs in the Apple M1 SoC partially implement a virtual GICv3
CPU interface, although one that is incapable of HW deactivation
of interrupts.

Advertise the support to KVM.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 drivers/irqchip/irq-apple-aic.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index c179e27062fd..a44370c018e2 100644
--- a/drivers/irqchip/irq-apple-aic.c
+++ b/drivers/irqchip/irq-apple-aic.c
@@ -50,6 +50,7 @@
 #include <linux/cpuhotplug.h>
 #include <linux/io.h>
 #include <linux/irqchip.h>
+#include <linux/irqchip/arm-vgic-info.h>
 #include <linux/irqdomain.h>
 #include <linux/limits.h>
 #include <linux/of_address.h>
@@ -787,6 +788,11 @@ static int aic_init_cpu(unsigned int cpu)
 	return 0;
 }
 
+static struct gic_kvm_info vgic_info __initdata = {
+	.type			= GIC_V3,
+	.no_hw_deactivation	= true,
+};
+
 static int __init aic_of_ic_init(struct device_node *node, struct device_node *parent)
 {
 	int i;
@@ -843,6 +849,8 @@ static int __init aic_of_ic_init(struct device_node *node, struct device_node *p
 			  "irqchip/apple-aic/ipi:starting",
 			  aic_init_cpu, NULL);
 
+	vgic_set_kvm_info(&vgic_info);
+
 	pr_info("Initialized with %d IRQs, %d FIQs, %d vIPIs\n",
 		irqc->nr_hw, AIC_NR_FIQ, AIC_NR_SWIPI);
 
-- 
2.29.2


  parent reply	other threads:[~2021-05-10 13:56 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-10 13:48 [PATCH v3 0/9] KVM: arm64: Initial host support for the Apple M1 Marc Zyngier
2021-05-10 13:48 ` [PATCH v3 1/9] irqchip/gic: Split vGIC probing information from the GIC code Marc Zyngier
2021-05-18 16:51   ` Alexandru Elisei
2021-05-10 13:48 ` [PATCH v3 2/9] KVM: arm64: Handle physical FIQ as an IRQ while running a guest Marc Zyngier
2021-05-20 17:46   ` Alexandru Elisei
2021-05-10 13:48 ` [PATCH v3 3/9] KVM: arm64: vgic: Be tolerant to the lack of maintenance interrupt Marc Zyngier
2021-05-10 16:19   ` Mark Rutland
2021-05-10 17:44     ` Marc Zyngier
2021-05-11 11:13       ` Mark Rutland
2021-05-10 13:48 ` [PATCH v3 4/9] KVM: arm64: vgic: Let an interrupt controller advertise lack of HW deactivation Marc Zyngier
2021-05-21 17:01   ` Alexandru Elisei
2021-05-24 17:17     ` Marc Zyngier
2021-05-10 13:48 ` [PATCH v3 5/9] KVM: arm64: vgic: move irq->get_input_level into an ops structure Marc Zyngier
2021-05-10 13:48 ` [PATCH v3 6/9] KVM: arm64: vgic: Implement SW-driven deactivation Marc Zyngier
2021-05-24 16:53   ` Alexandru Elisei
2021-05-24 17:43     ` Marc Zyngier
2021-05-10 13:48 ` [PATCH v3 7/9] KVM: arm64: timer: Refactor IRQ configuration Marc Zyngier
2021-05-14 12:46   ` Zenghui Yu
2021-05-24 17:48     ` Marc Zyngier
2021-05-10 13:48 ` [PATCH v3 8/9] KVM: arm64: timer: Add support for SW-based deactivation Marc Zyngier
2021-05-10 13:48 ` Marc Zyngier [this message]
2021-05-12 16:22 ` [PATCH v3 0/9] KVM: arm64: Initial host support for the Apple M1 Alexandru Elisei
2021-05-12 16:33   ` Marc Zyngier

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