On Fri, 10 Jun 2016 15:18:32 +1000 (AEST) Michael Ellerman <m...@ellerman.id.au> wrote:
> On Mon, 2016-23-05 at 08:28:28 UTC, Greg Kurz wrote: > > A strange behaviour is observed when comparing PCI hotplug in QEMU, between > > x86 and pseries. If you consider the following steps: > > - start a VM > > - add a PCI device via the QEMU monitor before the rtasd has started (for > > example starting the VM in paused state, or hotplug during FW or boot > > loader) > > - resume the VM execution > > > > The x86 kernel detects the PCI device, but the pseries one does not. > > > > This happens because the rtasd kernel worker is currently started under > > device_initcall, while PCI probing happens earlier under subsys_initcall. > > > > As a consequence, if we have a pending RTAS event at boot time, a message > > is printed and the event is dropped. > > > > This patch moves all the initialization of rtasd to arch_initcall, which is > > run before subsys_call: this way, logging_enabled is true when the RTAS > > event pops up and it is not lost anymore. > > > > The proc fs bits stay at device_initcall because they cannot be run before > > fs_initcall. > > > > Signed-off-by: Greg Kurz <gk...@linux.vnet.ibm.com> > > Tested-by: Thomas Huth <th...@redhat.com> > > Has this been tested on PowerVM ? > > cheers > No but I shall do it. Thanks for pointing this out. -- Greg _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
