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| author | Alex Bennée <alex.bennee@linaro.org> | 2017-02-23 18:29:12 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2017-02-24 10:32:45 +0000 |
| commit | e5143e30fb87fbf179029387f83f98a5a9b27f19 (patch) | |
| tree | b328a8046041f35bc3d03611f064d5e7098c2b7f /cpu-exec-common.c | |
| parent | 8d04fb55dec381bc5105cb47f29d918e579e8cbd (diff) | |
| download | qemu-e5143e30fb87fbf179029387f83f98a5a9b27f19.tar.gz | |
tcg: remove global exit_request
There are now only two uses of the global exit_request left.
The first ensures we exit the run_loop when we first start to process
pending work and in the kick handler. This is just as easily done by
setting the first_cpu->exit_request flag.
The second use is in the round robin kick routine. The global
exit_request ensured every vCPU would set its local exit_request and
cause a full exit of the loop. Now the iothread isn't being held while
running we can just rely on the kick handler to push us out as intended.
We lightly re-factor the main vCPU thread to ensure cpu->exit_requests
cause us to exit the main loop and process any IO requests that might
come along. As an cpu->exit_request may legitimately get squashed
while processing the EXCP_INTERRUPT exception we also check
cpu->queued_work_first to ensure queued work is expedited as soon as
possible.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'cpu-exec-common.c')
| -rw-r--r-- | cpu-exec-common.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/cpu-exec-common.c b/cpu-exec-common.c index e2bc053372..0504a9457b 100644 --- a/cpu-exec-common.c +++ b/cpu-exec-common.c @@ -23,8 +23,6 @@ #include "exec/exec-all.h" #include "exec/memory-internal.h" -bool exit_request; - /* exit the current TB, but without causing any exception to be raised */ void cpu_loop_exit_noexc(CPUState *cpu) { |