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- Disable the secure programming interface of the GIC500 chip in the RK3399

Browse Source 
SoC to fix interrupt priority assignment and even make a dead machine boot
   again when the gic-v3 driver enables pseudo NMIs
 
 - Correct the declaration of a percpu variable to fix several sparse warnings
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Merge tag 'irq_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Borislav Petkov:

 - Disable the secure programming interface of the GIC500 chip in the
   RK3399 SoC to fix interrupt priority assignment and even make a dead
   machine boot again when the gic-v3 driver enables pseudo NMIs

 - Correct the declaration of a percpu variable to fix several sparse
   warnings

* tag 'irq_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic-v3: Work around insecure GIC integrations
  irqchip/gic: Correct declaration of *percpu_base pointer in union gic_base
This commit is contained in:
Linus Torvalds 2024-12-15 09:58:27 -08:00
commit f7c7a1ba22
2 changed files with 17 additions and 2 deletions
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17
drivers/irqchip/irq-gic-v3.c
View File

@ -161,7 +161,22 @@ static bool cpus_have_group0 __ro_after_init;
static void __init gic_prio_init(void)
{
cpus_have_security_disabled = gic_dist_security_disabled();
bool ds;
ds = gic_dist_security_disabled();
if (!ds) {
u32 val;
val = readl_relaxed(gic_data.dist_base + GICD_CTLR);
val |= GICD_CTLR_DS;
writel_relaxed(val, gic_data.dist_base + GICD_CTLR);
ds = gic_dist_security_disabled();
if (ds)
pr_warn("Broken GIC integration, security disabled");
}
cpus_have_security_disabled = ds;
cpus_have_group0 = gic_has_group0();
/*

2
drivers/irqchip/irq-gic.c
View File

@ -64,7 +64,7 @@ static void gic_check_cpu_features(void)
union gic_base {
void __iomem *common_base;
void __percpu * __iomem *percpu_base;
void __iomem * __percpu *percpu_base;
};
struct gic_chip_data {