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>,
Zenghui Yu <yuzenghui@huawei.com>,
kernel-team@android.com
Subject: [PATCH v4 9/9] irqchip/apple-aic: Advertise some level of vGICv3 compatibility
Date: Tue, 1 Jun 2021 11:40:05 +0100 [thread overview]
Message-ID: <20210601104005.81332-10-maz@kernel.org> (raw)
In-Reply-To: <20210601104005.81332-1-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, nor masking the maintenance interrupt.
Advertise the support to KVM.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
drivers/irqchip/irq-apple-aic.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c
index c179e27062fd..b8c06bd8659e 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 +788,12 @@ static int aic_init_cpu(unsigned int cpu)
return 0;
}
+static struct gic_kvm_info vgic_info __initdata = {
+ .type = GIC_V3,
+ .no_maint_irq_mask = true,
+ .no_hw_deactivation = true,
+};
+
static int __init aic_of_ic_init(struct device_node *node, struct device_node *parent)
{
int i;
@@ -843,6 +850,8 @@ 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);
--
2.30.2
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next prev parent reply other threads:[~2021-06-01 10:45 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-01 10:39 [PATCH v4 0/9] KVM: arm64: Initial host support for the Apple M1 Marc Zyngier
2021-06-01 10:39 ` [PATCH v4 1/9] irqchip/gic: Split vGIC probing information from the GIC code Marc Zyngier
2021-06-01 10:39 ` [PATCH v4 2/9] KVM: arm64: Handle physical FIQ as an IRQ while running a guest Marc Zyngier
2021-06-01 10:39 ` [PATCH v4 3/9] KVM: arm64: vgic: Be tolerant to the lack of maintenance interrupt masking Marc Zyngier
2021-06-11 16:38 ` Alexandru Elisei
2021-06-11 16:59 ` Alexandru Elisei
2021-06-01 10:40 ` [PATCH v4 4/9] KVM: arm64: vgic: Let an interrupt controller advertise lack of HW deactivation Marc Zyngier
2021-06-15 14:26 ` Alexandru Elisei
2021-06-22 16:19 ` Marc Zyngier
2021-06-01 10:40 ` [PATCH v4 5/9] KVM: arm64: vgic: move irq->get_input_level into an ops structure Marc Zyngier
2021-06-15 14:45 ` Alexandru Elisei
2021-06-22 15:55 ` Marc Zyngier
2021-06-01 10:40 ` [PATCH v4 6/9] KVM: arm64: vgic: Implement SW-driven deactivation Marc Zyngier
2021-06-17 14:58 ` Alexandru Elisei
2021-06-22 16:12 ` Marc Zyngier
2021-06-23 14:15 ` Alexandru Elisei
2021-06-01 10:40 ` [PATCH v4 7/9] KVM: arm64: timer: Refactor IRQ configuration Marc Zyngier
2021-06-21 16:19 ` Alexandru Elisei
2021-06-01 10:40 ` [PATCH v4 8/9] KVM: arm64: timer: Add support for SW-based deactivation Marc Zyngier
2021-06-01 10:40 ` Marc Zyngier [this message]
2021-06-22 15:39 ` [PATCH v4 0/9] KVM: arm64: Initial host support for the Apple M1 Alexandru Elisei
2021-06-22 15:51 ` Marc Zyngier
2021-06-22 16:03 ` Alexandru Elisei
2021-06-22 16:26 ` Marc Zyngier
2021-06-23 16:18 ` Alexandru Elisei
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