On 10/07/2015 18:08, fred.kon...@greensocs.com wrote: > From: KONRAD Frederic <fred.kon...@greensocs.com> > > This is the async_safe_work introduction bit of the Multithread TCG work. > Rebased on current upstream (6169b60285fe1ff730d840a49527e721bfb30899). > > It can be cloned here: > http://git.greensocs.com/fkonrad/mttcg.git branch async_work_v2 > > The first patch introduces a mutex to protect the existing queued_work_* > CPUState members against multiple (concurent) access. > > The second patch introduces a tcg_executing_flag which will be 1 when we are > inside cpu_exec(). This is required as safe work need to be sure that's all > vCPU > are outside cpu_exec(). > > The last patch introduces async_safe_work. It allows to add some work which > will > be done asynchronously but only when all vCPUs are outside cpu_exec(). The tcg > thread will wait that no vCPUs have any pending safe work before reentering > cpu-exec(). > > Changes V1 -> V2: > * Release the lock while running the callback for both async and safe work.
What tree do these patches apply to? Paolo > KONRAD Frederic (3): > cpus: protect queued_work_* with work_mutex. > cpus: add a tcg_executing flag. > cpus: introduce async_run_safe_work_on_cpu. > > cpu-exec.c | 7 +++ > cpus.c | 164 > +++++++++++++++++++++++++++++++++++++++++------------- > include/qom/cpu.h | 28 ++++++++++ > qom/cpu.c | 2 + > 4 files changed, 161 insertions(+), 40 deletions(-) >
