diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-02-28 11:11:47 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-06-01 10:46:01 +0100 |
| commit | b6ca556c352979d09659027dc1559fad15b72649 (patch) | |
| tree | 64e07a2022b7d00b67481c0bd518dd104775ac18 /drivers/irqchip | |
| parent | 5f59229680f70078ac4c11db2ae89be087474144 (diff) | |
| download | linux-b6ca556c352979d09659027dc1559fad15b72649.tar.bz2 | |
irqchip/apple-aic: Advertise some level of vGICv3 compatibility
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>
Diffstat (limited to 'drivers/irqchip')
| -rw-r--r-- | drivers/irqchip/irq-apple-aic.c | 9 |
1 files changed, 9 insertions, 0 deletions
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); |