Re: kern/39242: NetBSD 4.0 will start busy-loop an hang on machines with more than 4 GB memory

[Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>]

The following reply was made to PR kern/39242; it has been noted by GNATS.

From: Wolfgang Stukenbrock <Wolfgang.Stukenbrock%nagler-company.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/39242: NetBSD 4.0 will start busy-loop an hang on machines 
with more than 4 GB memory
Date: Tue, 29 Jul 2008 09:07:09 +0200

 Hi,
 
 yes it is a E3110 CPU with 6MB cache.
 What files I need to catch from the current and integrate the changes 
 into my 4.0-version of netbsd?
 You talk about the "cache detection stuff" AND the file named below.
 
 I think it would be a real great idea to bring this fix into the 
 releases as soon as possible.
 This CPU is "very" cheep compared to the other one's (at least in 
 germany) and therefore is very attractive for new systems.
 
 W. Stukenbrock
 
 Simon Burge wrote:
 
 > The following reply was made to PR kern/39242; it has been noted by GNATS.
 > 
 > From: Simon Burge <simonb%NetBSD.org@localhost>
 > To: Wolfgang.Stukenbrock%nagler-company.com@localhost, 
 > gnats-bugs%NetBSD.org@localhost
 > Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
 >     netbsd-bugs%netbsd.org@localhost
 > Subject: Re: kern/39242: NetBSD 4.0 will start busy-loop an hang on machines 
 > with more than 4 GB memory 
 > Date: Tue, 29 Jul 2008 14:19:17 +1000
 > 
 >  Wolfgang.Stukenbrock%nagler-company.com@localhost wrote:
 >  
 >  > >Synopsis:       NetBSD 4.0 will start busy-loop an hang on machines with 
 > more than 4 GB memory
 >  
 >  What does "vmstat -s | grep colors" show on this machine?  If it's a
 >  reasonably recent Intel CPU with 6MB or 12MB of L2 cache, this will
 >  probably not be a power of two and would explain what you're seeing.
 >  
 >  In -current this was fixed by both fixing the cache detection stuff
 >  and rev 1.32 of sys/arch/x86/x86/cpu.c.
 >  
 >  Cheers,
 >  Simon.
 >  
 >