On Thu, 1 Dec 2005, Felipe Alfaro Solana wrote:
>
> Exactly that's what I'm seeing with the propietary nVidia driver:
Does yours work despite the messages?
Also, can both of you apply this debugging patch that just adds a bit more
information about exactly what kind of mapping these drivers are trying to
do..
Thanks,
Linus
---
diff --git a/mm/memory.c b/mm/memory.c
index 4b4fc3a..b0ab902 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1241,22 +1241,33 @@ static int incomplete_pfn_remap(struct v
if (!(vma->vm_flags & VM_INCOMPLETE)) {
if (warn) {
+ unsigned long val = pgprot_val(prot);
warn--;
printk("%s does an incomplete pfn remapping", current->comm);
+ printk("vma: %lx-%lx remap: %lx-%lx pfn: %lx, prot: %lx",
+ vma->vm_start, vma->vm_end,
+ start, end,
+ pfn, val);
dump_stack();
}
}
vma->vm_flags |= VM_INCOMPLETE | VM_IO | VM_RESERVED;
- if (start < vma->vm_start || end > vma->vm_end)
+ if (start < vma->vm_start || end > vma->vm_end) {
+ printk("pfn remap outside the vma!\n");
return -EINVAL;
+ }
- if (!pfn_valid(pfn))
+ if (!pfn_valid(pfn)) {
+ printk("incomplete pfn remap with IO pages not supported\n");
return -EINVAL;
+ }
page = pfn_to_page(pfn);
- if (!PageReserved(page))
+ if (!PageReserved(page)) {
+ printk("incomplete pfn remap with non-reserved pages!??!\n");
return -EINVAL;
+ }
retval = 0;
while (start < end) {
-
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