From 4f70f7a91bffdcc39f088748dc678953eb9a3fbd Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 12 Aug 2008 18:33:56 -0700
Subject: sparc64: Implement IRQ stacks.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc64/mm/init.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'arch/sparc64/mm/init.c')

diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 4e821b3ecb0..217de3ea29e 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -49,6 +49,7 @@
 #include <asm/sstate.h>
 #include <asm/mdesc.h>
 #include <asm/cpudata.h>
+#include <asm/irq.h>
 
 #define MAX_PHYS_ADDRESS	(1UL << 42UL)
 #define KPTE_BITMAP_CHUNK_SZ	(256UL * 1024UL * 1024UL)
@@ -1771,6 +1772,16 @@ void __init paging_init(void)
 	if (tlb_type == hypervisor)
 		sun4v_mdesc_init();
 
+	/* Once the OF device tree and MDESC have been setup, we know
+	 * the list of possible cpus.  Therefore we can allocate the
+	 * IRQ stacks.
+	 */
+	for_each_possible_cpu(i) {
+		/* XXX Use node local allocations... XXX */
+		softirq_stack[i] = __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+		hardirq_stack[i] = __va(lmb_alloc(THREAD_SIZE, THREAD_SIZE));
+	}
+
 	/* Setup bootmem... */
 	last_valid_pfn = end_pfn = bootmem_init(phys_base);
 
-- 
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