Messages in this thread Patch in this message | | | Date | Fri, 15 Jul 2011 23:05:15 -0400 | From | Will Simoneau <> | Subject | [PATCH] sun4m SMP: fix wrong shift instruction in IPI handler |
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This shift instruction appears to be shifting in the wrong direction. Without this change, my SparcStation-20MP hangs just after bringing up the second CPU:
Entering SMP Mode... Starting CPU 2 at f02b4e90 Brought up 2 CPUs Total of 2 processors activated (99.52 BogoMIPS). *** stuck ***
Signed-off-by: Will Simoneau <simoneau@ele.uri.edu> --- arch/sparc/kernel/entry.S | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S index 9fe08a1..f445e98 100644 --- a/arch/sparc/kernel/entry.S +++ b/arch/sparc/kernel/entry.S @@ -293,7 +293,7 @@ maybe_smp4m_msg: WRITE_PAUSE wr %l4, PSR_ET, %psr WRITE_PAUSE - sll %o3, 28, %o2 ! shift for simpler checks below + srl %o3, 28, %o2 ! shift for simpler checks below maybe_smp4m_msg_check_single: andcc %o2, 0x1, %g0 beq,a maybe_smp4m_msg_check_mask
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