From b362e5e067835d04ddde5fb1277272d4b498b970 Mon Sep 17 00:00:00 2001 From: pbrook Date: Sun, 12 Nov 2006 20:40:55 +0000 Subject: Speed up tlb_flush_page (Daniel Jacobowitz). git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2210 c046a42c-6fe2-441c-8c8c-71466251a162 --- exec.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'exec.c') diff --git a/exec.c b/exec.c index 20870ad024..762d6dc4dc 100644 --- a/exec.c +++ b/exec.c @@ -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) -- cgit v1.2.3