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From: Marius Strobl <marius@FreeBSD.org>
Date: Thu, 19 Mar 2009 16:37:30 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: RELENG_7
Subject: cvs commit: src/sys/sparc64/include tlb.h src/sys/sparc64/sparc64
 machdep.c pmap.c
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marius      2009-03-19 16:37:30 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/sparc64/include  tlb.h 
    sys/sparc64/sparc64  machdep.c pmap.c 
  Log:
  SVN rev 190080 on 2009-03-19 16:37:30Z by marius
  
  MFC: r186682
  
  - Currently the PMAP code is laid out to let the kernel TSB cover the
    whole KVA space using one locked 4MB dTLB entry per GB of physical
    memory. On Cheetah-class machines only the dt16 can hold locked
    entries though, which would be completely consumed for the kernel
    TSB on machines with >= 16GB. Therefore limit the KVA space to use
    no more than half of the lockable dTLB slots, given that we need
    them also for other things.
  - Add sanity checks which ensure that we don't exhaust the (lockable)
    TLB slots.
  
  Revision    Changes    Path
  1.26.22.3   +2 -0      src/sys/sparc64/include/tlb.h
  1.138.2.10  +15 -0     src/sys/sparc64/sparc64/machdep.c
  1.166.2.9   +11 -1     src/sys/sparc64/sparc64/pmap.c