three kernel patches for review

[Chris Pressey]

On Fri, 22 Apr 2005 09:23:31 -0700 (PDT)
Matthew Dillon <dillon at xxxxxxxxxxxxxxxxxxxx> wrote:

>     memtest won't necessarily find the problem(s).  If a memory
>     problem isn't due to a stuck bit (and most aren't), then it will
>     depend on a billion factors that no memory testing program can
>     ever test reliably.  The only solution to bad memory is usually to
>     replace the stick or replace the computer.  Sometimes you can
>     de-tune a computer (e.g. slow down the FSB, and a clock to the RAS
>     and CAS cycles, etc) to fix marginal memory.
> 
>     Another poster noted that the BIOS might report memory where there
>     is actually I/O.  This is a reasonable basis for putting in *some*
>     sort of hack but I don't think that the VM page lists are the
>     right place for that sort of thing.  

OK.  Can I at least add an ASSERT_IN_CRIT_SECTION() to vm_add_new_page()
for now?  (It had nothing to do with the bad RAM thing, it was just
something I noticed in the comment...)

-Chris