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Diffstat (limited to 'arch/arc/kernel/smp.c')
-rw-r--r--arch/arc/kernel/smp.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index 44a0d21ed342..2afbafadb6ab 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -90,10 +90,23 @@ void __init smp_cpus_done(unsigned int max_cpus)
*/
static volatile int wake_flag;
+#ifdef CONFIG_ISA_ARCOMPACT
+
+#define __boot_read(f) f
+#define __boot_write(f, v) f = v
+
+#else
+
+#define __boot_read(f) arc_read_uncached_32(&f)
+#define __boot_write(f, v) arc_write_uncached_32(&f, v)
+
+#endif
+
static void arc_default_smp_cpu_kick(int cpu, unsigned long pc)
{
BUG_ON(cpu == 0);
- wake_flag = cpu;
+
+ __boot_write(wake_flag, cpu);
}
void arc_platform_smp_wait_to_boot(int cpu)
@@ -102,10 +115,10 @@ void arc_platform_smp_wait_to_boot(int cpu)
if (IS_ENABLED(CONFIG_ARC_SMP_HALT_ON_RESET))
return;
- while (wake_flag != cpu)
+ while (__boot_read(wake_flag) != cpu)
;
- wake_flag = 0;
+ __boot_write(wake_flag, 0);
}
const char *arc_platform_smp_cpuinfo(void)