cvs commit: src/sys/conf ldscript.i386 src/sys/i386/i386 bios.c genassym.c locore.s machdep.c mp_machdep.c mpboot.s pmap.c src/sys/i386/include pmap.h vmparam.h

[John Baldwin]

On 04-Oct-2003 Peter Wemm wrote:
> John Baldwin wrote:
>  
>> On 01-Oct-2003 Peter Wemm wrote:
>> > peter       2003/10/01 16:46:08 PDT
> 
>> >   Log:
>> >   Commit Bosko's patch to clean up the PSE/PG_G initialization to and
>> >   avoid problems with some Pentium 4 cpus and some older PPro/Pentium2
>> >   cpus.  There are several problems, some documented in Intel errata.
> 
>> What does KERNBASE map to now?  4mb?
> 
> Nope.  KERNBASE is unchanged.  What is different now is that the fixed 1MB
> offset (pa = 1MB, va = KERNBASE + 1mb) is now 4MB and available via the
> KERNLOAD variable.  This becomes 2MB on a PAE configuration kernel.

So does KERNBASE + foo still map to PA foo for the lower 1 meg?

-- 

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/