Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'irq_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Borislav Petkov:
- Flush the translation service tables to prevent unpredictable
behavior on non-coherent GIC devices
* tag 'irq_urgent_for_v6.7_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Flush ITS tables correctly in non-coherent GIC designs
+10
-6
+10
-6
drivers/irqchip/irq-gic-v3-its.c
+10
-6
drivers/irqchip/irq-gic-v3-its.c
···
2379
2379
break;
2380
2380
}
2381
2381
2382
+
if (!shr)
2383
+
gic_flush_dcache_to_poc(base, PAGE_ORDER_TO_SIZE(order));
2384
+
2382
2385
its_write_baser(its, baser, val);
2383
2386
tmp = baser->val;
2384
-
2385
-
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE)
2386
-
tmp &= ~GITS_BASER_SHAREABILITY_MASK;
2387
2387
2388
2388
if ((val ^ tmp) & GITS_BASER_SHAREABILITY_MASK) {
2389
2389
/*
···
2394
2394
* non-cacheable as well.
2395
2395
*/
2396
2396
shr = tmp & GITS_BASER_SHAREABILITY_MASK;
2397
-
if (!shr) {
2397
+
if (!shr)
2398
2398
cache = GITS_BASER_nC;
2399
-
gic_flush_dcache_to_poc(base, PAGE_ORDER_TO_SIZE(order));
2400
-
}
2399
+
2401
2400
goto retry_baser;
2402
2401
}
2403
2402
···
2607
2608
if (its->flags & ITS_FLAGS_WORKAROUND_CAVIUM_22375)
2608
2609
/* erratum 24313: ignore memory access type */
2609
2610
cache = GITS_BASER_nCnB;
2611
+
2612
+
if (its->flags & ITS_FLAGS_FORCE_NON_SHAREABLE) {
2613
+
cache = GITS_BASER_nC;
2614
+
shr = 0;
2615
+
}
2610
2616
2611
2617
for (i = 0; i < GITS_BASER_NR_REGS; i++) {
2612
2618
struct its_baser *baser = its->tables + i;