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| author | Isaku Yamahata <yamahata@valinux.co.jp> | 2008-05-19 22:13:30 +0900 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-05-27 14:38:44 -0700 |
| commit | 0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0 (patch) | |
| tree | ceee49874e01183a1871778744c4033864853585 | |
| parent | 8311d21c35092aa4c4a12e0140e1ef3443489d77 (diff) | |
| download | lwn-0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0.tar.gz lwn-0e1a77ccdbc4ca59ccaf84168a0c3c1df4fadfc0.zip | |
[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>
| -rw-r--r-- | include/asm-ia64/intrinsics.h | 9 | ||||
| -rw-r--r-- | include/asm-ia64/mmu_context.h | 6 |
2 files changed, 10 insertions, 5 deletions
diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h index f1135b5b94c3..9b83f8f01678 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 cef2400983fa..040bc87db930 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 */ } |