Re: [PATCH v2 6/6] powerpc: Don't flush caches when adding memory

2019-09-02 Thread Alastair D'Silva
On Tue, 2019-09-03 at 08:23 +0200, Christophe Leroy wrote: > > Le 03/09/2019 à 07:24, Alastair D'Silva a écrit : > > From: Alastair D'Silva > > > > This operation takes a significant amount of time when hotplugging > > large amounts of memory (~50 seconds with 890GB of persistent > > memory). >

Re: [PATCH v2 6/6] powerpc: Don't flush caches when adding memory

2019-09-02 Thread Christophe Leroy
Le 03/09/2019 à 07:24, Alastair D'Silva a écrit : From: Alastair D'Silva This operation takes a significant amount of time when hotplugging large amounts of memory (~50 seconds with 890GB of persistent memory). This was orignally in commit fb5924fddf9e ("powerpc/mm: Flush cache on memory ho

[PATCH v2 6/6] powerpc: Don't flush caches when adding memory

2019-09-02 Thread Alastair D'Silva
From: Alastair D'Silva This operation takes a significant amount of time when hotplugging large amounts of memory (~50 seconds with 890GB of persistent memory). This was orignally in commit fb5924fddf9e ("powerpc/mm: Flush cache on memory hot(un)plug") to support memtrace, but the flush on add i