From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Jason Cooper <jason@lakedaemon.net>,
Robert Richter <rrichter@marvell.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: [PATCH v4 03/20] irqchip/gic-v4.1: Advertise support v4.1 to KVM
Date: Fri, 14 Feb 2020 14:57:19 +0000
Message-ID: <20200214145736.18550-4-maz@kernel.org> (raw)
In-Reply-To: <20200214145736.18550-1-maz@kernel.org>
Tell KVM that we support v4.1. Nothing uses this information so far.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
drivers/irqchip/irq-gic-v3-its.c | 9 ++++++++-
drivers/irqchip/irq-gic-v3.c | 2 ++
include/linux/irqchip/arm-gic-common.h | 2 ++
3 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index da883a691028..9a7854416b89 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -4822,6 +4822,7 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists,
struct device_node *of_node;
struct its_node *its;
bool has_v4 = false;
+ bool has_v4_1 = false;
int err;
gic_rdists = rdists;
@@ -4842,8 +4843,14 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists,
if (err)
return err;
- list_for_each_entry(its, &its_nodes, entry)
+ list_for_each_entry(its, &its_nodes, entry) {
has_v4 |= is_v4(its);
+ has_v4_1 |= is_v4_1(its);
+ }
+
+ /* Don't bother with inconsistent systems */
+ if (WARN_ON(!has_v4_1 && rdists->has_rvpeid))
+ rdists->has_rvpeid = false;
if (has_v4 & rdists->has_vlpis) {
if (its_init_vpe_domain() ||
diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c
index 73e87e176d76..5b192c0b6b57 100644
--- a/drivers/irqchip/irq-gic-v3.c
+++ b/drivers/irqchip/irq-gic-v3.c
@@ -1784,6 +1784,7 @@ static void __init gic_of_setup_kvm_info(struct device_node *node)
gic_v3_kvm_info.vcpu = r;
gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis;
+ gic_v3_kvm_info.has_v4_1 = gic_data.rdists.has_rvpeid;
gic_set_kvm_info(&gic_v3_kvm_info);
}
@@ -2099,6 +2100,7 @@ static void __init gic_acpi_setup_kvm_info(void)
}
gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis;
+ gic_v3_kvm_info.has_v4_1 = gic_data.rdists.has_rvpeid;
gic_set_kvm_info(&gic_v3_kvm_info);
}
diff --git a/include/linux/irqchip/arm-gic-common.h b/include/linux/irqchip/arm-gic-common.h
index b9850f5f1906..fa8c0455c352 100644
--- a/include/linux/irqchip/arm-gic-common.h
+++ b/include/linux/irqchip/arm-gic-common.h
@@ -32,6 +32,8 @@ struct gic_kvm_info {
struct resource vctrl;
/* vlpi support */
bool has_v4;
+ /* rvpeid support */
+ bool has_v4_1;
};
const struct gic_kvm_info *gic_get_kvm_info(void);
--
2.20.1
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Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-14 14:57 [PATCH v4 00/20] irqchip/gic-v4: GICv4.1 architecture support Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 01/20] irqchip/gic-v4.1: Skip absent CPUs while iterating over redistributors Marc Zyngier
2020-02-17 9:11 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 02/20] irqchip/gic-v3: Use SGIs without active state if offered Marc Zyngier
2020-02-17 9:18 ` Zenghui Yu
2020-02-14 14:57 ` Marc Zyngier [this message]
2020-02-17 9:09 ` [PATCH v4 03/20] irqchip/gic-v4.1: Advertise support v4.1 to KVM Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 04/20] irqchip/gic-v4.1: Map the ITS SGIR register page Marc Zyngier
2020-02-20 3:17 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 05/20] irqchip/gic-v4.1: Plumb skeletal VSGI irqchip Marc Zyngier
2020-02-20 3:21 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 06/20] irqchip/gic-v4.1: Add initial SGI configuration Marc Zyngier
2020-02-18 7:25 ` Zenghui Yu
2020-02-18 9:46 ` Marc Zyngier
2020-02-20 3:25 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 07/20] irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks Marc Zyngier
2020-02-20 3:32 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 08/20] irqchip/gic-v4.1: Plumb get/set_irqchip_state " Marc Zyngier
2020-02-18 7:00 ` Zenghui Yu
2020-02-18 9:27 ` Marc Zyngier
2020-02-18 15:31 ` Marc Zyngier
2020-02-19 11:50 ` Zenghui Yu
2020-02-19 15:18 ` Zenghui Yu
2020-02-20 3:11 ` Zenghui Yu
2020-02-28 19:37 ` Marc Zyngier
2020-03-01 19:00 ` Marc Zyngier
2020-03-02 8:18 ` Zenghui Yu
2020-03-02 12:09 ` Marc Zyngier
2020-03-02 14:21 ` Bill Barrow
2020-02-14 14:57 ` [PATCH v4 09/20] irqchip/gic-v4.1: Plumb set_vcpu_affinity " Marc Zyngier
2020-02-20 3:37 ` Zenghui Yu
2020-02-28 19:00 ` Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 10/20] irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 11/20] irqchip/gic-v4.1: Add VSGI allocation/teardown Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 12/20] irqchip/gic-v4.1: Add VSGI property setup Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 13/20] irqchip/gic-v4.1: Eagerly vmap vPEs Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 14/20] KVM: arm64: GICv4.1: Let doorbells be auto-enabled Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 15/20] KVM: arm64: GICv4.1: Add direct injection capability to SGI registers Marc Zyngier
2020-02-18 8:46 ` Zenghui Yu
2020-02-18 9:41 ` Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 16/20] KVM: arm64: GICv4.1: Allow SGIs to switch between HW and SW interrupts Marc Zyngier
2020-02-20 3:55 ` Zenghui Yu
2020-02-28 19:16 ` Marc Zyngier
2020-03-02 2:40 ` Zenghui Yu
2020-02-14 14:57 ` [PATCH v4 17/20] KVM: arm64: GICv4.1: Plumb SGI implementation selection in the distributor Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 18/20] KVM: arm64: GICv4.1: Reload VLPI configuration on distributor enable/disable Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 19/20] KVM: arm64: GICv4.1: Allow non-trapping WFI when using HW SGIs Marc Zyngier
2020-02-14 14:57 ` [PATCH v4 20/20] KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs Marc Zyngier
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