Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [3/4] powerpc/mm: Clean up memory hotplug failure paths | Date | Wed, 2 Mar 2016 09:21:19 +1100 (AEDT) |
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On Tue, 2016-09-02 at 03:32:42 UTC, David Gibson wrote: > This makes a number of cleanups to handling of mapping failures during > memory hotplug on Power: > > For errors creating the linear mapping for the hot-added region: > * This is now reported with EFAULT which is more appropriate than the > previous EINVAL (the failure is unlikely to be related to the > function's parameters) > * An error in this path now prints a warning message, rather than just > silently failing to add the extra memory. > * Previously a failure here could result in the region being partially > mapped. We now clean up any partial mapping before failing. > > For errors creating the vmemmap for the hot-added region: > * This is now reported with EFAULT instead of causing a BUG() - this > could happen for external reason (e.g. full hash table) so it's better > to handle this non-fatally > * An error message is also printed, so the failure won't be silent > * As above a failure could cause a partially mapped region, we now > clean this up. > > Signed-off-by: David Gibson <david@gibson.dropbear.id.au> > Reviewed-by: Paul Mackerras <paulus@samba.org> > Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/1dace6c665ec59bdc4eeafa4db
cheers
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