Hi, Rafael > From: [email protected] > [mailto:[email protected]] On Behalf Of Zheng, > Lv > Sent: Tuesday, October 25, 2016 11:17 PM > To: Rafael J. Wysocki <[email protected]>; Lv Zheng <[email protected]> > Cc: Wysocki, Rafael J <[email protected]>; Rafael J . Wysocki > <[email protected]>; Brown, Len > <[email protected]>; Linux Kernel Mailing List > <[email protected]>; ACPI Devel Maling > List <[email protected]> > Subject: RE: [PATCH 0/6] ACPICA: Interpreter: Improve lock order fixes > > Hi, Rafael > > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Rafael > J. > > Wysocki > > Subject: Re: [PATCH 0/6] ACPICA: Interpreter: Improve lock order fixes > > > > On Tue, Oct 25, 2016 at 7:20 AM, Lv Zheng <[email protected]> wrote: > > > This patchset improves ACPICA intepreter lock order fixes. Including > > > several urgent regression fixes [PATCH 0-3]. > > > > OK, thanks! > > > > So patches [4-6/6] appear to be cleanups and I'd prefer them to be > > applied in a usual way (ie. via the upstream ACPICA). > > I think PATCH 4 is also an urgent fix. > On certain table loading mode (we have 3 now). > When acpi_ds_initialize_objects() is invoked, acpi_ds_initialize_region() > will be invoked. > While in other modes, it will be invoked in acpi_ds_load2_end_op(), so no-op > in > acpi_ds_initialize_objects(). > > When it is not no-op in acpi_ds_initialize_objects(), the wrong returning > value becomes an exception > preventing the table from being correctly loaded/initialized.
I'll stop including PATCH 4 in the regression fix series. I cannot find the original triggering case right here right now. I'll think it's not urgent. Sorry for the noise. Thanks Lv > > [PATCH 5-6] are cleanups. > > > > > I'd like to take the [1-3/6] as fixes for 4.9-rc3 though, but for that > > I need you to tell me which mainline kernel commits are fixed by them. > > > > IOW, what should I put into the Fixes: tags. > > > > [In the future, if you post a regression fix, please always add a > > FIxes: tag to it pointing to the commit being fixed.] > > OK, I'll add the Fixes tag and re-send the patches. > > Thanks and best regards > Lv > > > > > > Patches tested with customized ACPI table where _PS0/_PS3 methods are > > > customized to invoke a serialized control method which creates named > > > objects. When pm_async=yes, AE_ALREADY_EXISTS can be seen in > > > suspend/resume > > > process. This is an existing issue, triggered in 4.9-rc1 by ACPICA > > > interpreter lock order fixes, and can be fixed by [PATCH 1] in this > > > series. > > > > > > Lv Zheng (6): > > > ACPICA: Dispatcher: Fix order issue of method termination > > > ACPICA: Dispatcher: Fix an unbalanced lock exit path in > > > acpi_ds_auto_serialize_method() > > > ACPICA: Dispatcher: Tune interpreter lock around > > > acpi_ev_initialize_region() > > > ACPICA: Events: Cleanup acpi_ev_initialize_region() > > > ACPICA: Tables: Cleanup acpi_tb_install_and_load_table() > > > ACPICA: Tables: Add acpi_tb_unload_table() > > > > Thanks, > > Rafael > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > > the body of a message to [email protected] > > More majordomo info at http://vger.kernel.org/majordomo-info.html > �{.n�+�������+%��lzwm��b�맲��r��zX����(����ܨ}���Ơz�&j:+v��� ����zZ+��+zf���h���~����i���z� �w���?�� > ��&�)ߢf
