From: Suresh Siddha <suresh.b.siddha@intel.com>
Subject: x64, x2apic/intr-remap: introcude self IPI to genapic routines
References: fate #303948 and fate #303984
Patch-Mainline: queued for .28
Commit-ID: cff73a6ffaed726780b001937d2a42efde553922

Signed-off-by: Thomas Renninger <trenn@suse.de>

Introduce self IPI op for genapic.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: akpm@linux-foundation.org
Cc: arjan@linux.intel.com
Cc: andi@firstfloor.org
Cc: ebiederm@xmission.com
Cc: jbarnes@virtuousgeek.org
Cc: steiner@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

Automatically created from "patches.arch/x2APIC_PATCH_20_of_41_cff73a6ffaed726780b001937d2a42efde553922" by xen-port-patches.py

Index: head-2008-11-04/arch/x86/kernel/genapic_64-xen.c
===================================================================
--- head-2008-11-04.orig/arch/x86/kernel/genapic_64-xen.c	2008-11-04 11:55:22.000000000 +0100
+++ head-2008-11-04/arch/x86/kernel/genapic_64-xen.c	2008-11-04 14:40:00.000000000 +0100
@@ -72,18 +72,12 @@ void __init setup_apic_routing(void)
 
 /* Same for both flat and physical. */
 
-#ifdef CONFIG_XEN
-extern void xen_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest);
-#endif
-
-void send_IPI_self(int vector)
-{
 #ifndef CONFIG_XEN
+void apic_send_IPI_self(int vector)
+{
 	__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
-#else
-	xen_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
-#endif
 }
+#endif
 
 int __init acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
Index: head-2008-11-04/arch/x86/kernel/genapic_xen_64.c
===================================================================
--- head-2008-11-04.orig/arch/x86/kernel/genapic_xen_64.c	2008-11-04 11:55:22.000000000 +0100
+++ head-2008-11-04/arch/x86/kernel/genapic_xen_64.c	2008-11-04 14:41:17.000000000 +0100
@@ -34,7 +34,8 @@ static inline void __send_IPI_one(unsign
 	notify_remote_via_irq(irq);
 }
 
-void xen_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest)
+static void xen_send_IPI_shortcut(unsigned int shortcut, int vector,
+				  unsigned int dest)
 {
 	int cpu;
 
@@ -116,6 +117,11 @@ static void xen_send_IPI_mask(cpumask_t 
 	local_irq_restore(flags);
 }
 
+static void xen_send_IPI_self(int vector)
+{
+	xen_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
+}
+
 #ifdef CONFIG_XEN_PRIVILEGED_GUEST
 static int xen_apic_id_registered(void)
 {
@@ -152,6 +158,7 @@ struct genapic apic_xen =  {
 	.send_IPI_all = xen_send_IPI_all,
 	.send_IPI_allbutself = xen_send_IPI_allbutself,
 	.send_IPI_mask = xen_send_IPI_mask,
+	.send_IPI_self = xen_send_IPI_self,
 	.cpu_mask_to_apicid = xen_cpu_mask_to_apicid,
 	.phys_pkg_id = phys_pkg_id,
 };