diff options
| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2023-04-24 11:31:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-30 16:27:27 +0200 |
| commit | b6db4ef5ea41a351dfc2e88d9a0edf5ca2393997 (patch) | |
| tree | 56c46f9c03d1404137b95c24adfa9fb09385ff20 | |
| parent | 61b5d77169e1d4a7b324adb1deea9c76c9170c62 (diff) | |
irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable
commit 2c6c9c049510163090b979ea5f92a68ae8d93c45 upstream.
When a GIC local interrupt is not routable, it's vl_map will be used
to control some internal states for core (providing IPTI, IPPCI, IPFDC
input signal for core). Overriding it will interfere core's intetrupt
controller.
Do not touch vl_map if a local interrupt is not routable, we are not
going to remap it.
Before dd098a0e0319 (" irqchip/mips-gic: Get rid of the reliance on
irq_cpu_online()"), if a local interrupt is not routable, then it won't
be requested from GIC Local domain, and thus gic_all_vpes_irq_cpu_online
won't be called for that particular interrupt.
Fixes: dd098a0e0319 (" irqchip/mips-gic: Get rid of the reliance on irq_cpu_online()")
Cc: stable@vger.kernel.org
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230424103156.66753-2-jiaxun.yang@flygoat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/irqchip/irq-mips-gic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-mips-gic.c b/drivers/irqchip/irq-mips-gic.c index dd9b111038b0..caebafed49bb 100644 --- a/drivers/irqchip/irq-mips-gic.c +++ b/drivers/irqchip/irq-mips-gic.c @@ -396,6 +396,8 @@ static void gic_all_vpes_irq_cpu_online(void) unsigned int intr = local_intrs[i]; struct gic_all_vpes_chip_data *cd; + if (!gic_local_irq_is_routable(intr)) + continue; cd = &gic_all_vpes_chip_data[intr]; write_gic_vl_map(mips_gic_vx_map_reg(intr), cd->map); if (cd->mask) |