[PATCH] ppc64 kexec: native hash clear
Add code to clear the hash table and invalidate the tlb for native (SMP,
non-LPAR) mode. Supports 16M and 4k pages.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: R Sharada <sharada@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 9d03a98..f373de5 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -181,6 +181,28 @@
asm volatile("ptesync": : :"memory");
}
+static inline unsigned long slot2va(unsigned long avpn, unsigned long large,
+ unsigned long secondary, unsigned long slot)
+{
+ unsigned long va;
+
+ va = avpn << 23;
+
+ if (!large) {
+ unsigned long vpi, pteg;
+
+ pteg = slot / HPTES_PER_GROUP;
+ if (secondary)
+ pteg = ~pteg;
+
+ vpi = ((va >> 28) ^ pteg) & htab_hash_mask;
+
+ va |= vpi << PAGE_SHIFT;
+ }
+
+ return va;
+}
+
/*
* Handle a fault by adding an HPTE. If the address can't be determined
* to be valid via Linux page tables, return 1. If handled return 0