cvs commit: src/sys/ia64/ia64 machdep.c
marcel at FreeBSD.org
Wed Jun 11 17:15:20 PDT 2003
marcel 2003/06/11 17:15:19 PDT
FreeBSD src repository
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 at fujitsu-siemens.com>
Revision Changes Path
1.140 +10 -2 src/sys/ia64/ia64/machdep.c
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