Re: cxl: fix nested locking hang during EEH hotplug

2017-02-27 Thread Michael Ellerman
On Mon, 2017-02-06 at 01:07:17 UTC, Andrew Donnellan wrote: > Commit 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU > not configured") introduced a rwsem to fix an invalid memory access that > occurred when someone attempts to access the config space of an AFU on a > vPHB whil

Re: [PATCH] cxl: fix nested locking hang during EEH hotplug

2017-02-20 Thread Andrew Donnellan
On 06/02/17 12:07, Andrew Donnellan wrote: Commit 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU not configured") introduced a rwsem to fix an invalid memory access that occurred when someone attempts to access the config space of an AFU on a vPHB whilst the AFU is deconfigu

Re: [PATCH] cxl: fix nested locking hang during EEH hotplug

2017-02-07 Thread Frederic Barrat
Le 06/02/2017 à 02:07, Andrew Donnellan a écrit : Commit 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU not configured") introduced a rwsem to fix an invalid memory access that occurred when someone attempts to access the config space of an AFU on a vPHB whilst the AFU is

[PATCH] cxl: fix nested locking hang during EEH hotplug

2017-02-05 Thread Andrew Donnellan
Commit 14a3ae34bfd0 ("cxl: Prevent read/write to AFU config space while AFU not configured") introduced a rwsem to fix an invalid memory access that occurred when someone attempts to access the config space of an AFU on a vPHB whilst the AFU is deconfigured, such as during EEH recovery. It turns o