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authorIsaku Yamahata <yamahata@valinux.co.jp>2008-05-19 22:13:30 +0900
committerTony Luck <tony.luck@intel.com>2008-05-27 14:38:44 -0700
commit0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0 (patch)
treeceee49874e01183a1871778744c4033864853585 /include
parent8311d21c35092aa4c4a12e0140e1ef3443489d77 (diff)
[IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel paravirtualization friendly.
make kernel paravirtualization friendly by introducing ia64_set_rr0_to_rr4(). ia64/Xen will replace setting rr[0-4] with single hypercall later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include')
-rw-r--r--include/asm-ia64/intrinsics.h9
-rw-r--r--include/asm-ia64/mmu_context.h6
2 files changed, 10 insertions, 5 deletions
diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h
index f1135b5b94c..9b83f8f0167 100644
--- a/include/asm-ia64/intrinsics.h
+++ b/include/asm-ia64/intrinsics.h
@@ -18,6 +18,15 @@
# include <asm/gcc_intrin.h>
#endif
+#define ia64_set_rr0_to_rr4(val0, val1, val2, val3, val4) \
+do { \
+ ia64_set_rr(0x0000000000000000UL, (val0)); \
+ ia64_set_rr(0x2000000000000000UL, (val1)); \
+ ia64_set_rr(0x4000000000000000UL, (val2)); \
+ ia64_set_rr(0x6000000000000000UL, (val3)); \
+ ia64_set_rr(0x8000000000000000UL, (val4)); \
+} while (0)
+
/*
* Force an unresolved reference if someone tries to use
* ia64_fetch_and_add() with a bad value.
diff --git a/include/asm-ia64/mmu_context.h b/include/asm-ia64/mmu_context.h
index cef2400983f..040bc87db93 100644
--- a/include/asm-ia64/mmu_context.h
+++ b/include/asm-ia64/mmu_context.h
@@ -152,11 +152,7 @@ reload_context (nv_mm_context_t context)
# endif
#endif
- ia64_set_rr(0x0000000000000000UL, rr0);
- ia64_set_rr(0x2000000000000000UL, rr1);
- ia64_set_rr(0x4000000000000000UL, rr2);
- ia64_set_rr(0x6000000000000000UL, rr3);
- ia64_set_rr(0x8000000000000000UL, rr4);
+ ia64_set_rr0_to_rr4(rr0, rr1, rr2, rr3, rr4);
ia64_srlz_i(); /* srlz.i implies srlz.d */
}