[PATCH] ppc64: Move initialisation of xItLpQueue into ItLpQueue.c
The xItLpQueue is initalised manually in iSeries_setup_arch(). Move
this code into ItLpQueue.c for a cleaner separation.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/ppc64/kernel/ItLpQueue.c b/arch/ppc64/kernel/ItLpQueue.c
index 35f6dea..091aaed 100644
--- 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 @@
}
__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;
+}