NVIDIA/open-gpu-kernel-modules
1
0
Fork 0
mirror of https://github.com/NVIDIA/open-gpu-kernel-modules.git synced 2026-03-03 04:09:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

555.52.04

Browse Source 
(cherry picked from commit 78d807e001)
This commit is contained in:
Bernhard Stoeckner
2024-06-05 09:39:46 +02:00
committed by Gaurav Juvekar
parent 3084c04453
commit 74ee05e160
36 changed files with 1140 additions and 487 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
kernel-open/nvidia/os-mlock.c
View File

@@ -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
}