[PATCH v2 gnumach] smp: Rearrange IPI sending mechanism

[Damien Zammit]

Wait for ICR then just assert the signal.
No need for deassert.  This is how Linux and NetBSD does it.
I couldn't find documentation on the correct method, however.
---
 i386/i386/smp.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/i386/i386/smp.c b/i386/i386/smp.c
index 05e9de67..a758eea3 100644
--- a/i386/i386/smp.c
+++ b/i386/i386/smp.c
@@ -54,17 +54,11 @@ static void smp_send_ipi(unsigned apic_id, unsigned vector)
 
     cpu_intr_save(&flags);
 
-    apic_send_ipi(NO_SHORTHAND, FIXED, PHYSICAL, ASSERT, EDGE, vector, 
apic_id);
-
     do {
         cpu_pause();
     } while(lapic->icr_low.delivery_status == SEND_PENDING);
 
-    apic_send_ipi(NO_SHORTHAND, FIXED, PHYSICAL, DE_ASSERT, EDGE, vector, 
apic_id);
-
-    do {
-        cpu_pause();
-    } while(lapic->icr_low.delivery_status == SEND_PENDING);
+    apic_send_ipi(NO_SHORTHAND, FIXED, PHYSICAL, ASSERT, EDGE, vector, 
apic_id);
 
     cpu_intr_restore(flags);
 }
-- 
2.43.0