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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Wed, 11 Jun 2003 17:15:19 -0700 (PDT)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/ia64/ia64 machdep.c
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marcel      2003/06/11 17:15:19 PDT

  FreeBSD src repository

  Modified files:
    sys/ia64/ia64        machdep.c 
  Log:
  Make sure pcpu->pc_pcb is pointing to a 16-byte aligned address. The
  PCB contains FP registers, whose alignment must be 16 bytes at least.
  Since the PCB pointed to by pc_pcb is immediately after the PCPU
  itself, round-up the size of thge PCPU to a multiple of 16 bytes. The
  PCPU is page aligned.
  
  This fixes a misalignment trap caused by stopping a CPU in a SMP
  kernel, such as been done when entering the debugger.
  
  Reported by: Alan Robinson <alan.robinson@fujitsu-siemens.com>
  
  Revision  Changes    Path
  1.140     +10 -2     src/sys/ia64/ia64/machdep.c