Re: kern/46481: page fault in uvmspace_free -> uvm_unmap_remove -> pmap_remove -> pmap_pdes_invalid

[Chuck Silvers <chuq%chuq.com@localhost>]

The following reply was made to PR kern/46481; it has been noted by GNATS.

From: Chuck Silvers <chuq%chuq.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
        netbsd-bugs%netbsd.org@localhost, rmind%netbsd.org@localhost
Subject: Re: kern/46481: page fault in uvmspace_free -> uvm_unmap_remove ->
 pmap_remove -> pmap_pdes_invalid
Date: Thu, 31 May 2012 21:22:34 -0700

 I also see this problem quite easily, with both 6.0_BETA2 and -current.
 
 it was introduced by this change:
 http://mail-index.netbsd.org/source-changes/2012/04/20/msg033858.html
 (support for 256 CPUs on amd64)
 
 with that change reverted, this problem no longer occurs,
 nor do other problems that I've seen on native amd64.
 
 -Chuck