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| author | pbrook | 2006-11-12 21:40:55 +0100 |
|---|---|---|
| committer | pbrook | 2006-11-12 21:40:55 +0100 |
| commit | b362e5e067835d04ddde5fb1277272d4b498b970 (patch) | |
| tree | 9e83ced7a49e4151d09d1965075ebe55bff6a55a /exec.c | |
| parent | MIPS usermode debug exceptions (Dave Denholm). (diff) | |
| download | qemu-b362e5e067835d04ddde5fb1277272d4b498b970.tar.gz qemu-b362e5e067835d04ddde5fb1277272d4b498b970.tar.xz qemu-b362e5e067835d04ddde5fb1277272d4b498b970.zip | |
Speed up tlb_flush_page (Daniel Jacobowitz).
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2210 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 15 |
1 files changed, 7 insertions, 8 deletions
@@ -1288,14 +1288,13 @@ void tlb_flush_page(CPUState *env, target_ulong addr) tlb_flush_entry(&env->tlb_table[0][i], addr); tlb_flush_entry(&env->tlb_table[1][i], addr); - for(i = 0; i < TB_JMP_CACHE_SIZE; i++) { - tb = env->tb_jmp_cache[i]; - if (tb && - ((tb->pc & TARGET_PAGE_MASK) == addr || - ((tb->pc + tb->size - 1) & TARGET_PAGE_MASK) == addr)) { - env->tb_jmp_cache[i] = NULL; - } - } + /* Discard jump cache entries for any tb which might potentially + overlap the flushed page. */ + i = tb_jmp_cache_hash_page(addr - TARGET_PAGE_SIZE); + memset (&env->tb_jmp_cache[i], 0, TB_JMP_PAGE_SIZE * sizeof(tb)); + + i = tb_jmp_cache_hash_page(addr); + memset (&env->tb_jmp_cache[i], 0, TB_JMP_PAGE_SIZE * sizeof(tb)); #if !defined(CONFIG_SOFTMMU) if (addr < MMAP_AREA_END) |