From e5143e30fb87fbf179029387f83f98a5a9b27f19 Mon Sep 17 00:00:00 2001 From: Alex Bennée Date: Thu, 23 Feb 2017 18:29:12 +0000 Subject: 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 Reviewed-by: Richard Henderson --- cpu-exec-common.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'cpu-exec-common.c') 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) { -- cgit v1.2.3-55-g7522