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[SPARC64]: Pass multiple CPUs at once to hypervisor cross-call API. 

Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
David S. Miller 2006-02-21 13:59:47 -08:00 committed by David S. Miller
parent c79f76777d
commit d371c0c174
1 changed files with 0 additions and 54 deletions
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54
arch/sparc64/kernel/smp.c
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@ -557,7 +557,6 @@ retry:
}
}
#if 0
/* Multi-cpu list version. */
static int init_cpu_list(u16 *list, cpumask_t mask)
{
@ -631,59 +630,6 @@ static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t
put_cpu();
}
#else
/* Single-cpu list version. */
static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
{
int this_cpu = get_cpu();
struct trap_per_cpu *tb = &trap_block[this_cpu];
u64 *mondo = __va(tb->cpu_mondo_block_pa);
u16 *cpu_list = __va(tb->cpu_list_pa);
int i;
mondo[0] = data0;
mondo[1] = data1;
mondo[2] = data2;
wmb();
for_each_cpu_mask(i, mask) {
int retries = 0;
do {
register unsigned long func __asm__("%o5");
register unsigned long arg0 __asm__("%o0");
register unsigned long arg1 __asm__("%o1");
register unsigned long arg2 __asm__("%o2");
cpu_list[0] = i;
func = HV_FAST_CPU_MONDO_SEND;
arg0 = 1;
arg1 = tb->cpu_list_pa;
arg2 = tb->cpu_mondo_block_pa;
__asm__ __volatile__("ta %8"
: "=&r" (func), "=&r" (arg0),
"=&r" (arg1), "=&r" (arg2)
: "0" (func), "1" (arg0),
"2" (arg1), "3" (arg2),
"i" (HV_FAST_TRAP)
: "memory");
if (likely(arg0 == HV_EOK))
break;
if (unlikely(++retries > 100)) {
printk("CPU[%d]: sun4v mondo error %lu\n",
this_cpu, func);
break;
}
udelay(2 * i);
} while (1);
}
put_cpu();
}
#endif
/* Send cross call to all processors mentioned in MASK
* except self.