Re: [PATCH v7 1/1] memory_hotplug: Add a bounds check to __add_pages

2019-10-04 Thread Michal Hocko
On Tue 01-10-19 10:46:15, Alastair D'Silva wrote: > From: Alastair D'Silva > > On PowerPC, the address ranges allocated to OpenCAPI LPC memory > are allocated from firmware. These address ranges may be higher > than what older kernels permit, as we increased the maximum > permissable address in c

RE: [PATCH v7 1/1] memory_hotplug: Add a bounds check to __add_pages

2019-10-02 Thread Alastair D'Silva
On Wed, 2019-10-02 at 15:14 -0700, Andrew Morton wrote: > On Tue, 1 Oct 2019 11:49:47 +0200 David Hildenbrand > wrote: > > > > @@ -278,6 +278,22 @@ static int check_pfn_span(unsigned long pfn, > > > unsigned long nr_pages, > > > return 0; > > > } > > > > > > +static int check_hotplug_memory_

Re: [PATCH v7 1/1] memory_hotplug: Add a bounds check to __add_pages

2019-10-02 Thread Andrew Morton
On Tue, 1 Oct 2019 11:49:47 +0200 David Hildenbrand wrote: > > @@ -278,6 +278,22 @@ static int check_pfn_span(unsigned long pfn, unsigned > > long nr_pages, > > return 0; > > } > > > > +static int check_hotplug_memory_addressable(unsigned long pfn, > > +

Re: [PATCH v7 1/1] memory_hotplug: Add a bounds check to __add_pages

2019-10-01 Thread David Hildenbrand
On 01.10.19 02:46, Alastair D'Silva wrote: > From: Alastair D'Silva > > On PowerPC, the address ranges allocated to OpenCAPI LPC memory > are allocated from firmware. These address ranges may be higher > than what older kernels permit, as we increased the maximum > permissable address in commit 4

[PATCH v7 1/1] memory_hotplug: Add a bounds check to __add_pages

2019-09-30 Thread Alastair D'Silva
From: Alastair D'Silva On PowerPC, the address ranges allocated to OpenCAPI LPC memory are allocated from firmware. These address ranges may be higher than what older kernels permit, as we increased the maximum permissable address in commit 4ffe713b7587 ("powerpc/mm: Increase the max addressable