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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-03-01 19:21:08 -0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-03-06 11:53:57 -0800 |
| commit | 6cc9d67c6f682cf04eea2d6e64a252b63a7eccdf (patch) | |
| tree | f4a70ec6c66bcb37242891c9b544508b78f5a726 /accel/tcg/tcg-accel-ops.c | |
| parent | 872ebd884dd68ecef4c6f9f86c5da519f18bd31e (diff) | |
| download | focaccia-qemu-6cc9d67c6f682cf04eea2d6e64a252b63a7eccdf.tar.gz focaccia-qemu-6cc9d67c6f682cf04eea2d6e64a252b63a7eccdf.zip | |
accel/tcg: Precompute curr_cflags into cpu->tcg_cflags
The primary motivation is to remove a dozen insns along the fast-path in tb_lookup. As a byproduct, this allows us to completely remove parallel_cpus. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'accel/tcg/tcg-accel-ops.c')
| -rw-r--r-- | accel/tcg/tcg-accel-ops.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/accel/tcg/tcg-accel-ops.c b/accel/tcg/tcg-accel-ops.c index 6144d9df87..6cdcaa2855 100644 --- a/accel/tcg/tcg-accel-ops.c +++ b/accel/tcg/tcg-accel-ops.c @@ -41,6 +41,14 @@ /* common functionality among all TCG variants */ +void tcg_cpu_init_cflags(CPUState *cpu, bool parallel) +{ + uint32_t cflags = cpu->cluster_index << CF_CLUSTER_SHIFT; + cflags |= parallel ? CF_PARALLEL : 0; + cflags |= icount_enabled() ? CF_USE_ICOUNT : 0; + cpu->tcg_cflags = cflags; +} + void tcg_cpus_destroy(CPUState *cpu) { cpu_thread_signal_destroyed(cpu); |