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| Started by | Suzuki K Poulose <suzuki.poulose@arm.com> |
|---|---|
| First post | 2016-04-26 16:50 +0200 |
| Last post | 2016-04-26 16:50 +0200 |
| Articles | 1 — 1 participant |
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[PATCH v5 3/5] irqchip/gic: Restore CPU interface checking Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-04-26 16:50 +0200
| From | Suzuki K Poulose <suzuki.poulose@arm.com> |
|---|---|
| Date | 2016-04-26 16:50 +0200 |
| Subject | [PATCH v5 3/5] irqchip/gic: Restore CPU interface checking |
| Message-ID | <rsctj-Xx-5@gated-at.bofh.it> |
From: Marc Zyngier <marc.zyngier@arm.com>
When introducing the whole CPU feature detection framework,
we lost the capability to detect a mismatched GIC configuration
(using the GICv2 MMIO interface, but having the system register
interface enabled).
In order to solve this, use the new this_cpu_has_cap() helper.
Also move the check to the CPU interface path in order to catch
systems where the first CPU has been correctly configured,
but the secondaries are not.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
drivers/irqchip/irq-gic.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 282344b..095bb5b 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -55,7 +55,7 @@
static void gic_check_cpu_features(void)
{
- WARN_TAINT_ONCE(cpus_have_cap(ARM64_HAS_SYSREG_GIC_CPUIF),
+ WARN_TAINT_ONCE(this_cpu_has_cap(ARM64_HAS_SYSREG_GIC_CPUIF),
TAINT_CPU_OUT_OF_SPEC,
"GICv3 system registers enabled, broken firmware!\n");
}
@@ -490,6 +490,7 @@ static void gic_cpu_init(struct gic_chip_data *gic)
* Get what the GIC says our CPU mask is.
*/
BUG_ON(cpu >= NR_GIC_CPU_IF);
+ gic_check_cpu_features();
cpu_mask = gic_get_cpumask(gic);
gic_cpu_map[cpu] = cpu_mask;
@@ -1021,8 +1022,6 @@ static void __init __gic_init_bases(unsigned int gic_nr, int irq_start,
BUG_ON(gic_nr >= CONFIG_ARM_GIC_MAX_NR);
- gic_check_cpu_features();
-
gic = &gic_data[gic_nr];
/* Initialize irq_chip */
--
1.7.9.5
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