xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Merge branch 'topic/ppc-kvm' into next

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Merge the topic branch we were sharing with kvm-ppc, Paul has also
merged it.
This commit is contained in:
Michael Ellerman
2017-04-28 20:19:37 +10:00
parent 096ff2ddba e5afdf9dd5
commit b13f6683ed
9 changed files with 142 additions and 21 deletions
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39
arch/powerpc/mm/mmu_context_iommu.c
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@@ -314,6 +314,25 @@ struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm,
}
EXPORT_SYMBOL_GPL(mm_iommu_lookup);
struct mm_iommu_table_group_mem_t *mm_iommu_lookup_rm(struct mm_struct *mm,
unsigned long ua, unsigned long size)
{
struct mm_iommu_table_group_mem_t *mem, *ret = NULL;
list_for_each_entry_lockless(mem, &mm->context.iommu_group_mem_list,
next) {
if ((mem->ua <= ua) &&
(ua + size <= mem->ua +
(mem->entries << PAGE_SHIFT))) {
ret = mem;
break;
}
}
return ret;
}
EXPORT_SYMBOL_GPL(mm_iommu_lookup_rm);
struct mm_iommu_table_group_mem_t *mm_iommu_find(struct mm_struct *mm,
unsigned long ua, unsigned long entries)
{
@@ -345,6 +364,26 @@ long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem,
}
EXPORT_SYMBOL_GPL(mm_iommu_ua_to_hpa);
long mm_iommu_ua_to_hpa_rm(struct mm_iommu_table_group_mem_t *mem,
unsigned long ua, unsigned long *hpa)
{
const long entry = (ua - mem->ua) >> PAGE_SHIFT;
void *va = &mem->hpas[entry];
unsigned long *pa;
if (entry >= mem->entries)
return -EFAULT;
pa = (void *) vmalloc_to_phys(va);
if (!pa)
return -EFAULT;
*hpa = *pa | (ua & ~PAGE_MASK);
return 0;
}
EXPORT_SYMBOL_GPL(mm_iommu_ua_to_hpa_rm);
long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem)
{
if (atomic64_inc_not_zero(&mem->mapped))