Messages in this thread | | | Date | Tue, 19 Jun 2001 13:34:25 +0300 (IDT) | From | Yoav Etsion <> | Subject | [BUG] bug in mmap_kmem |
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Hi,
The problem is that mmaping a segment <addr,len> from /dev/kmem gives differnet results than reading the same <addr,len>.
It seems that the bug is that mmap_kmem is a macro for mmap_mem (for /dev/mem). mmap_mem maps a _physical_ offset into a vm area vma, while mmap_kmem should map a _virtual_ offset into a vm area.
I hacked it to work by copying mmap_mem to mmap_kmem and adding __pa() in the proper assginment, but I don't know how to check if the offset is valid in the kernel virtual memory. Maybe someone who knows the mm code better can fix this?
Thanks,
Yoav Etsion
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