From 9fd9b7de61b24c70a8a82d9627a20ed95433e1b5 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 5 Feb 2019 15:18:10 +0000 Subject: accel/tcg: Consider cluster index in tb_lookup__cpu_state() In commit f7b78602fdc6c6e4be we added the CPU cluster number to the cflags field of the TB hash; this included adding it to the value kept in tb->cflags, since we pass that field directly into the hash calculation in some places. Unfortunately we forgot to check whether other parts of the code were doing comparisons against tb->cflags that would need to be updated. It turns out that there is exactly one such place: the tb_lookup__cpu_state() function checks whether the TB it has found in the tb_jmp_cache has a tb->cflags matching the cf_mask that is passed in. The tb->cflags has the cluster_index in it but the cf_mask does not. Hoist the "add cluster index to the cf_mask" code up from tb_htable_lookup() to tb_lookup__cpu_state() so it can be considered in the "did this TB match in the jmp cache" condition, as well as when we do the full hash lookup by physical PC, flags, etc. (tb_htable_lookup() is only called from tb_lookup__cpu_state(), so this change doesn't require any further knock-on changes.) Fixes: f7b78602fdc6c6e4be ("accel/tcg: Add cluster number to TCG TB hash") Tested-by: Cleber Rosa Tested-by: Mark Cave-Ayland Reported-by: Howard Spoelstra Reported-by: Cleber Rosa Signed-off-by: Peter Maydell Message-Id: <20190205151810.571-1-peter.maydell@linaro.org> Reviewed-by: Richard Henderson Signed-off-by: Richard Henderson --- accel/tcg/cpu-exec.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'accel/tcg/cpu-exec.c') diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 7cf1292546..60d87d5a19 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -325,9 +325,6 @@ TranslationBlock *tb_htable_lookup(CPUState *cpu, target_ulong pc, struct tb_desc desc; uint32_t h; - cf_mask &= ~CF_CLUSTER_MASK; - cf_mask |= cpu->cluster_index << CF_CLUSTER_SHIFT; - desc.env = (CPUArchState *)cpu->env_ptr; desc.cs_base = cs_base; desc.flags = flags; -- cgit v1.2.3