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authorR Sharada <sharada@in.ibm.com>2005-06-26 01:58:08 +0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-26 03:24:51 +0400
commitf4c82d5132b0592f5d6befc5b652cbd4b08f12ff (patch)
tree3889ea8eeb4dfa6c995b6dc93574d24c238a6deb /include
parent70765aa4bdb8862a49fcf5b28f3deaf561cf5ae7 (diff)
downloadlinux-f4c82d5132b0592f5d6befc5b652cbd4b08f12ff.tar.xz
[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>
Diffstat (limited to 'include')
-rw-r--r--include/asm-ppc64/mmu.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 9d03a98a4fa3..f373de5e3dd9 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -181,6 +181,28 @@ static inline void tlbiel(unsigned long va)
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