1 files changed, 14 insertions, 4 deletions

diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index a3022dc48ef8..0464173ea568 100644
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -229,6 +229,14 @@ static void __init sal_desc_ap_wakeup(void *p) { }
  */
 static int sal_cache_flush_drops_interrupts;
 
+static int __init
+force_pal_cache_flush(char *str)
+{
+        sal_cache_flush_drops_interrupts = 1;
+        return 0;
+}
+early_param("force_pal_cache_flush", force_pal_cache_flush);
+
 void __init
 check_sal_cache_flush (void)
 {
@@ -237,15 +245,17 @@ check_sal_cache_flush (void)
         u64 vector, cache_type = 3;
         struct ia64_sal_retval isrv;
 
+        if (sal_cache_flush_drops_interrupts)
+                return;
+
         cpu = get_cpu();
         local_irq_save(flags);
 
         /*
-         * Schedule a timer interrupt, wait until it's reported, and see if
-         * SAL_CACHE_FLUSH drops it.
+         * Send ourselves a timer interrupt, wait until it's reported, and see
+         * if SAL_CACHE_FLUSH drops it.
          */
-        ia64_set_itv(IA64_TIMER_VECTOR);
-        ia64_set_itm(ia64_get_itc() + 1000);
+        platform_send_ipi(cpu, IA64_TIMER_VECTOR, IA64_IPI_DM_INT, 0);
 
         while (!ia64_get_irr(IA64_TIMER_VECTOR))
                 cpu_relax();