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russellcnv
2024-06-28 19:18:50 -07:00
parent 3750358633
commit 91726f2e21
194 changed files with 44392 additions and 38511 deletions
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24
kernel-open/nvidia/os-mlock.c
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@@ -36,10 +36,28 @@ static inline int nv_follow_pfn(struct vm_area_struct *vma,
unsigned long address,
unsigned long *pfn)
{
#if defined(NV_UNSAFE_FOLLOW_PFN_PRESENT)
return unsafe_follow_pfn(vma, address, pfn);
#else
#if defined(NV_FOLLOW_PFN_PRESENT)
return follow_pfn(vma, address, pfn);
#else
#if NV_IS_EXPORT_SYMBOL_PRESENT_follow_pte
int status = 0;
spinlock_t *ptl;
pte_t *ptep;
if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)))
return status;
status = follow_pte(vma, address, &ptep, &ptl);
if (status)
return status;
*pfn = pte_pfn(ptep_get(ptep));
// The lock is acquired inside follow_pte()
pte_unmap_unlock(ptep, ptl);
return 0;
#else // NV_IS_EXPORT_SYMBOL_PRESENT_follow_pte
return -1;
#endif // NV_IS_EXPORT_SYMBOL_PRESENT_follow_pte
#endif
}