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authorLinus Torvalds <torvalds@linux-foundation.org>2014-05-20 14:33:48 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2014-05-20 14:33:48 +0900
commit8d900e7f3178dccb123c877253bdb193827654c6 (patch)
tree062912169e6a8b9cc751621cc0144a38ebe24e1a /arch/arm64
parent41abc90228f98774263572ec99e7ab820f091002 (diff)
parent4797ec2dc83a43be35bad56037d1b53db9e2b5d5 (diff)
downloadlinux-linaro-stable-8d900e7f3178dccb123c877253bdb193827654c6.tar.gz
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull two arm64 fixes from Catalin Marinas: - arm64 migrate_irqs() fix following commit ffde1de64012 (irqchip: Gic: Support forced affinity setting) - fix arm64 pud_huge() to return 0 when only 2 levels page tables are used (__PAGETABLE_PMD_FOLDED defined and pmd_huge already covers block entries at the first level), otherwise KVM gets confused * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: fix pud_huge() for 2-level pagetables arm64: use cpu_online_mask when using forced irq_set_affinity
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/kernel/irq.c10
-rw-r--r--arch/arm64/mm/hugetlbpage.c4
2 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index 473e5dbf8f39..0f08dfd69ebc 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -97,11 +97,15 @@ static bool migrate_one_irq(struct irq_desc *desc)
if (irqd_is_per_cpu(d) || !cpumask_test_cpu(smp_processor_id(), affinity))
return false;
- if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids) {
- affinity = cpu_online_mask;
+ if (cpumask_any_and(affinity, cpu_online_mask) >= nr_cpu_ids)
ret = true;
- }
+ /*
+ * when using forced irq_set_affinity we must ensure that the cpu
+ * being offlined is not present in the affinity mask, it may be
+ * selected as the target CPU otherwise
+ */
+ affinity = cpu_online_mask;
c = irq_data_get_irq_chip(d);
if (!c->irq_set_affinity)
pr_debug("IRQ%u: unable to set affinity\n", d->irq);
diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index 5e9aec358306..31eb959e9aa8 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -51,7 +51,11 @@ int pmd_huge(pmd_t pmd)
int pud_huge(pud_t pud)
{
+#ifndef __PAGETABLE_PMD_FOLDED
return !(pud_val(pud) & PUD_TABLE_BIT);
+#else
+ return 0;
+#endif
}
int pmd_huge_support(void)