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- arm64 migrate_irqs() fix following commit ffde1de640 (irqchip: Gic:

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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
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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 ffde1de640 (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
This commit is contained in:
Linus Torvalds 2014-05-20 14:33:48 +09:00
commit 8d900e7f31
2 changed files with 11 additions and 3 deletions
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10
arch/arm64/kernel/irq.c
View File

@ -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);

4
arch/arm64/mm/hugetlbpage.c
View File

@ -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)