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-rw-r--r--include/asm-powerpc/lppaca.h19
-rw-r--r--include/asm-powerpc/paca.h3
2 files changed, 22 insertions, 0 deletions
diff --git a/include/asm-powerpc/lppaca.h b/include/asm-powerpc/lppaca.h
index 4dc514aabfe..942bb450baf 100644
--- a/include/asm-powerpc/lppaca.h
+++ b/include/asm-powerpc/lppaca.h
@@ -27,7 +27,9 @@
//
//
//----------------------------------------------------------------------------
+#include <linux/cache.h>
#include <asm/types.h>
+#include <asm/mmu.h>
/* The Hypervisor barfs if the lppaca crosses a page boundary. A 1k
* alignment is sufficient to prevent this */
@@ -133,5 +135,22 @@ struct lppaca {
extern struct lppaca lppaca[];
+/*
+ * SLB shadow buffer structure as defined in the PAPR. The save_area
+ * contains adjacent ESID and VSID pairs for each shadowed SLB. The
+ * ESID is stored in the lower 64bits, then the VSID.
+ */
+struct slb_shadow {
+ u32 persistent; // Number of persistent SLBs x00-x03
+ u32 buffer_length; // Total shadow buffer length x04-x07
+ u64 reserved; // Alignment x08-x0f
+ struct {
+ u64 esid;
+ u64 vsid;
+ } save_area[SLB_NUM_BOLTED]; // x10-x40
+} ____cacheline_aligned;
+
+extern struct slb_shadow slb_shadow[];
+
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_LPPACA_H */
diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
index 2d4585f0620..7ffa2512524 100644
--- a/include/asm-powerpc/paca.h
+++ b/include/asm-powerpc/paca.h
@@ -23,6 +23,7 @@
register struct paca_struct *local_paca asm("r13");
#define get_paca() local_paca
#define get_lppaca() (get_paca()->lppaca_ptr)
+#define get_slb_shadow() (get_paca()->slb_shadow_ptr)
struct task_struct;
@@ -98,6 +99,8 @@ struct paca_struct {
u64 user_time; /* accumulated usermode TB ticks */
u64 system_time; /* accumulated system TB ticks */
u64 startpurr; /* PURR/TB value snapshot */
+
+ struct slb_shadow *slb_shadow_ptr;
};
extern struct paca_struct paca[];