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authorMichael Neuling <mikey@neuling.org>2006-08-07 16:19:19 +1000
committerPaul Mackerras <paulus@samba.org>2006-08-08 17:08:56 +1000
commit2f6093c84730b4bad65bcd0f2f904a5769b1dfc5 (patch)
treeab4e64a0520e944062f418e91706ff968e23a6ea /include/asm-powerpc/paca.h
parent452b5e21216011f2f068e80443568f5f3f3f4d63 (diff)
[POWERPC] Implement SLB shadow buffer
This adds a shadow buffer for the SLBs and regsiters it with PHYP. Only the bolted SLB entries (top 3) are shadowed. The SLB shadow buffer tells the hypervisor what the kernel needs to have in the SLB for the kernel to be able to function. The hypervisor can use this information to speed up partition context switches. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/paca.h')
-rw-r--r--include/asm-powerpc/paca.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
index 2d4585f06209..7ffa2512524e 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[];