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From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Sat, 20 Mar 2010 15:27:01 +0000 (UTC)
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X-FreeBSD-CVS-Branch: RELENG_8
Subject: cvs commit: src/sys/powerpc/aim mmu_oea64.c
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nwhitehorn    2010-03-20 15:27:01 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_8)
    sys/powerpc/aim      mmu_oea64.c 
  Log:
  SVN rev 205382 on 2010-03-20 15:27:01Z by nwhitehorn
  
  MFC r204297:
  
  Move the OEA64 scratchpage to the end of KVA from the beginning, and set
  its PVO to map physical address 0 instead of kernelstart. This fixes a
  situation in which a user process could attempt to return this address
  via KVM, have it fault while being modified, and then panic the kernel
  because (a) it is supposed to map a valid address and (b) it lies in the
  no-fault region between VM_MIN_KERNEL_ADDRESS and virtual_avail.
  
  While here, move msgbuf and dpcpu back into regular KVA space for
  consistency with other implementations.
  
  Revision  Changes    Path
  1.4.2.12  +14 -9     src/sys/powerpc/aim/mmu_oea64.c