diff options
| author | Peter Crosthwaite <crosthwaitepeter@gmail.com> | 2015-05-30 23:11:46 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-26 16:00:51 +0200 |
| commit | 41da4bd6420afd1209c408974920f63ff9c658e1 (patch) | |
| tree | 78e56f7e51952a8c8319f4c7a8ac8b3c80053cf8 /include/exec/tb-hash.h | |
| parent | e1b89321bafea9fb33d87852fc91fee579d17dfe (diff) | |
cpu-defs: Move out TB_JMP defines
These are not Architecture specific in any way so move them out of
cpu-defs.h. tb-hash.h is an appropriate place as a leading user and
their strong relationship to TB hashing and caching.
Reviewed-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <43ceca65a3fa240efac49aa0bf604ad0442e1710.1433052532.git.crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/exec/tb-hash.h')
| -rw-r--r-- | include/exec/tb-hash.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/exec/tb-hash.h b/include/exec/tb-hash.h index e0bd786f9f..0f4e8a08af 100644 --- a/include/exec/tb-hash.h +++ b/include/exec/tb-hash.h @@ -20,6 +20,14 @@ #ifndef EXEC_TB_HASH #define EXEC_TB_HASH +/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for + addresses on the same page. The top bits are the same. This allows + TLB invalidation to quickly clear a subset of the hash table. */ +#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) +#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) +#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) +#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) + static inline unsigned int tb_jmp_cache_hash_page(target_ulong pc) { target_ulong tmp; |