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Re: [Qemu-devel] [RFC PATCH V2 0/3] Multithread TCG async_safe_work part
Re: [Qemu-devel] [RFC PATCH V2 0/3] Multithread TCG async_safe_work part.
Wed, 15 Jul 2015 09:44:56 +0200
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On 13/07/2015 13:53, Paolo Bonzini wrote:
On 10/07/2015 18:08, address@hidden wrote:
From: KONRAD Frederic <address@hidden>
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
Changes V1 -> V2:
* Release the lock while running the callback for both async and safe work.
What tree do these patches apply to?
it applies on :
I need to rebase mttcg on it.. But I cleaned up/sent this part for Alvise.
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(-)
[Qemu-devel] [RFC PATCH V2 3/3] cpus: introduce async_run_safe_work_on_cpu., fred . konrad, 2015/07/10
Re: [Qemu-devel] [RFC PATCH V2 0/3] Multithread TCG async_safe_work part., Paolo Bonzini, 2015/07/13
- [Qemu-devel] [RFC PATCH V2 2/3] cpus: add a tcg_executing flag., (continued)