cvs commit: src/sys/vm vm_pageq.c

Maxim Sobolev sobomax at
Sat Apr 16 05:21:32 PDT 2005

Wilko Bulte wrote:
> On Sat, Apr 16, 2005 at 12:52:49AM +0200, Pawel Jakub Dawidek wrote..
>>On Fri, Apr 15, 2005 at 09:45:02PM +0000, John Baldwin wrote:
>>+> jhb         2005-04-15 21:45:02 UTC
>>+>   FreeBSD src repository
>>+>   Modified files:
>>+>     sys/vm               vm_pageq.c 
>>+>   Log:
>>+>   Add a vm.blacklist tunable which can hold a space or comma seperated list
>>+>   of physical addresses.  The pages containing these physical addresses will
>>+>   not be added to the free list and thus will effectively be ignored by the
>>+>   VM system.  This is mostly useful for the case when one knows of specific
>>+>   physical addresses that have bit errors (such as from a memtest run) so
>>+>   that one can blacklist the bad pages while waiting for the new sticks of
>>+>   RAM to arrive.  The physical addresses of any ignored pages are listed in
>>+>   the message buffer as well.
>>Nice. Would be good to have it documented somewhere, not sure where...
> Yeah.. Whats next, background memory scrubber that takes a close
> look at the ECC hardware ? ;-)

time to add badpage(8). ;-)


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