X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fmm%2Fmmu_context_nohash.c;h=ddfd7ad4e1d60ade761b5f039b745307d6ce5a82;hb=78f622377f7d31d988db350a43c5689dd5f31876;hp=dbc692145ecb1aea313fc64992010519c73f1c28;hpb=91e013827c0bcbb187ecf02213c5446b6f62d445;p=mirror_ubuntu-artful-kernel.git

diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index dbc692145ecb..ddfd7ad4e1d6 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -47,6 +47,7 @@
 #include <linux/bootmem.h>
 #include <linux/notifier.h>
 #include <linux/cpu.h>
+#include <linux/slab.h>
 
 #include <asm/mmu_context.h>
 #include <asm/tlbflush.h>
@@ -394,10 +395,18 @@ void __init mmu_context_init(void)
 	 * the PID/TID comparison is disabled, so we can use a TID of zero
 	 * to represent all kernel pages as shared among all contexts.
 	 * 	-- Dan
+	 *
+	 * The IBM 47x core supports 16-bit PIDs, thus 65535 contexts. We
+	 * should normally never have to steal though the facility is
+	 * present if needed.
+	 *      -- BenH
 	 */
 	if (mmu_has_feature(MMU_FTR_TYPE_8xx)) {
 		first_context = 0;
 		last_context = 15;
+	} else if (mmu_has_feature(MMU_FTR_TYPE_47x)) {
+		first_context = 1;
+		last_context = 65535;
 	} else {
 		first_context = 1;
 		last_context = 255;