https://bugzilla.novell.com/show_bug.cgi?id=390384
User kwolf@novell.com added comment
https://bugzilla.novell.com/show_bug.cgi?id=390384#c18
--- Comment #18 from Kevin Wolf 2008-06-04 11:25:39 MDT ---
I agree that a small test program independent of blktap would be helpful. I
haven't succeeded yet in creating one, though.
Jan, I don't think blktap would intentionally free the page, after all it's a
ring buffer and should be reused. It seems to map DomU blkfront pages read-only
for write operations, though. As I'm not too familiar with the kernel code,
could you take a look at the blktap kernel module source?
And while we're at it, just out of curiosity with respect to oops reading... Is
the 0003 in "Oops: 0003 [1] SMP" the error code of the page fault? That's the
way I interpreted it and then it would be another hint that the page is
read-only.
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