diff options
| author |   Marc Zyngier <marc.zyngier@arm.com> | 2016-04-22 12:25:33 +0100 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2016-04-25 15:14:00 +0100 |
| commit | 25fc11aead380501d70b701e136e89d321277177 (patch) | |
| tree | bef589bd1d1ab792413247e6752040f74226ab83 /drivers/irqchip/irq-gic.c | |
| parent | arm64: Allow a capability to be checked on a single CPU (diff) | |
| download | linux-dev-25fc11aead380501d70b701e136e89d321277177.tar.xz linux-dev-25fc11aead380501d70b701e136e89d321277177.zip | |
irqchip/gic: Restore CPU interface checking
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.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/irqchip/irq-gic.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 282344b95ec2..095bb5b5c3f2 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 */ |