[PATCH] ppc64: Move initialisation of xItLpQueue into ItLpQueue.c

[karo-tx-linux.git] / arch / ppc64 / kernel / ItLpQueue.c

diff --git a/arch/ppc64/kernel/ItLpQueue.c b/arch/ppc64/kernel/ItLpQueue.c
index 35f6deac0b99fc6e67fa286f57ca5189b9e05f0f..091aaed4842c538aee1032af711a6a33caab2c79 100644 (file)
--- a/arch/ppc64/kernel/ItLpQueue.c
+++ b/arch/ppc64/kernel/ItLpQueue.c
@@ -11,6 +11,7 @@
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
+#include <linux/bootmem.h>
 #include <asm/system.h>
 #include <asm/paca.h>
 #include <asm/iSeries/ItLpQueue.h>
@@ -186,3 +187,24 @@ static int set_spread_lpevents(char *str)
 }
 __setup("spread_lpevents=", set_spread_lpevents);
 
+void setup_hvlpevent_queue(void)
+{
+       void *eventStack;
+
+       /*
+        * Allocate a page for the Event Stack. The Hypervisor needs the
+        * absolute real address, so we subtract out the KERNELBASE and add
+        * in the absolute real address of the kernel load area.
+        */
+       eventStack = alloc_bootmem_pages(LpEventStackSize);
+       memset(eventStack, 0, LpEventStackSize);
+
+       /* Invoke the hypervisor to initialize the event stack */
+       HvCallEvent_setLpEventStack(0, eventStack, LpEventStackSize);
+
+       xItLpQueue.xSlicEventStackPtr = (char *)eventStack;
+       xItLpQueue.xSlicCurEventPtr = (char *)eventStack;
+       xItLpQueue.xSlicLastValidEventPtr = (char *)eventStack +
+                                       (LpEventStackSize - LpEventMaxSize);
+       xItLpQueue.xIndex = 0;
+}