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This commit is contained in:
Bernhard Stoeckner
2024-10-22 17:38:58 +02:00
parent ed4be64962
commit d5a0858f90
1049 changed files with 209491 additions and 167508 deletions
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68
kernel-open/nvidia-drm/nvidia-drm-gem-user-memory.c
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@@ -36,6 +36,10 @@
#include "linux/mm.h"
#include "nv-mm.h"
#if defined(NV_LINUX_PFN_T_H_PRESENT)
#include "linux/pfn_t.h"
#endif
#if defined(NV_BSD)
#include <vm/vm_pageout.h>
#endif
@@ -103,6 +107,37 @@ static int __nv_drm_gem_user_memory_mmap(struct nv_drm_gem_object *nv_gem,
return 0;
}
#if defined(NV_LINUX) && !defined(NV_VMF_INSERT_MIXED_PRESENT)
static vm_fault_t __nv_vm_insert_mixed_helper(
struct vm_area_struct *vma,
unsigned long address,
unsigned long pfn)
{
int ret;
#if defined(NV_PFN_TO_PFN_T_PRESENT)
ret = vm_insert_mixed(vma, address, pfn_to_pfn_t(pfn));
#else
ret = vm_insert_mixed(vma, address, pfn);
#endif
switch (ret) {
case 0:
case -EBUSY:
/*
* EBUSY indicates that another thread already handled
* the faulted range.
*/
return VM_FAULT_NOPAGE;
case -ENOMEM:
return VM_FAULT_OOM;
default:
WARN_ONCE(1, "Unhandled error in %s: %d\n", __FUNCTION__, ret);
return VM_FAULT_SIGBUS;
}
}
#endif
static vm_fault_t __nv_drm_gem_user_memory_handle_vma_fault(
struct nv_drm_gem_object *nv_gem,
struct vm_area_struct *vma,
@@ -112,36 +147,19 @@ static vm_fault_t __nv_drm_gem_user_memory_handle_vma_fault(
unsigned long address = nv_page_fault_va(vmf);
struct drm_gem_object *gem = vma->vm_private_data;
unsigned long page_offset;
vm_fault_t ret;
unsigned long pfn;
page_offset = vmf->pgoff - drm_vma_node_start(&gem->vma_node);
BUG_ON(page_offset >= nv_user_memory->pages_count);
pfn = page_to_pfn(nv_user_memory->pages[page_offset]);
#if !defined(NV_LINUX)
ret = vmf_insert_pfn(vma, address, page_to_pfn(nv_user_memory->pages[page_offset]));
#else /* !defined(NV_LINUX) */
ret = vm_insert_page(vma, address, nv_user_memory->pages[page_offset]);
switch (ret) {
case 0:
case -EBUSY:
/*
* EBUSY indicates that another thread already handled
* the faulted range.
*/
ret = VM_FAULT_NOPAGE;
break;
case -ENOMEM:
ret = VM_FAULT_OOM;
break;
default:
WARN_ONCE(1, "Unhandled error in %s: %d\n", __FUNCTION__, ret);
ret = VM_FAULT_SIGBUS;
break;
}
#endif /* !defined(NV_LINUX) */
return ret;
return vmf_insert_pfn(vma, address, pfn);
#elif defined(NV_VMF_INSERT_MIXED_PRESENT)
return vmf_insert_mixed(vma, address, pfn_to_pfn_t(pfn));
#else
return __nv_vm_insert_mixed_helper(vma, address, pfn);
#endif
}
static int __nv_drm_gem_user_create_mmap_offset(