From 1ed2fd2d3a8d18f184ba2d06e0f03bff773f28ab Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Mon, 12 Sep 2005 13:17:27 +1000 Subject: [PATCH] [PATCH] ppc64: Fix for missing start-cpu rtas token If the rtas start-cpu token doesnt exist then presume the cpu is already spinning. If it isnt we will catch it later on when the cpu doesnt respond. Signed-off-by: Anton Blanchard Signed-off-by: Paul Mackerras --- arch/ppc64/kernel/pSeries_smp.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/ppc64/kernel/pSeries_smp.c b/arch/ppc64/kernel/pSeries_smp.c index 79c7f322366..d2c7e2c4733 100644 --- a/arch/ppc64/kernel/pSeries_smp.c +++ b/arch/ppc64/kernel/pSeries_smp.c @@ -272,6 +272,7 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) unsigned long start_here = __pa((u32)*((unsigned long *) pSeries_secondary_smp_init)); unsigned int pcpu; + int start_cpu; if (cpu_isset(lcpu, of_spin_map)) /* Already started by OF and sitting in spin loop */ @@ -282,12 +283,20 @@ static inline int __devinit smp_startup_cpu(unsigned int lcpu) /* Fixup atomic count: it exited inside IRQ handler. */ paca[lcpu].__current->thread_info->preempt_count = 0; - status = rtas_call(rtas_token("start-cpu"), 3, 1, NULL, - pcpu, start_here, lcpu); + /* + * If the RTAS start-cpu token does not exist then presume the + * cpu is already spinning. + */ + start_cpu = rtas_token("start-cpu"); + if (start_cpu == RTAS_UNKNOWN_SERVICE) + return 1; + + status = rtas_call(start_cpu, 3, 1, NULL, pcpu, start_here, lcpu); if (status != 0) { printk(KERN_ERR "start-cpu failed: %i\n", status); return 0; } + return 1; } -- 2.41.0