n be selected by its unique NUMA
> node.
NUMA is distance based topology, does HMAT solve these problems?
How do we prevent fallback nodes of normal nodes being pmem nodes?
On an unexpected crash/failure is there a scrubbing mechanism
or do we rely on the allocator to do the right thing prior to
reallocating any memory. Will frequent zero'ing hurt NVDIMM/pmem's
life times?
Balbir Singh.
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post what I have for review within the next few
>> days.
>>
>> Whether this is all too late for 4.17 is another question...
>
> Here is the x86 version of a 'bytes remaining' memcpy_mcsafe() implemenation:
>
> https://lists.01.org/pipermail/linux-nvdimm/2018-May/015548.ht
w
> there are no pending device-tree design concerns.
Hi, Dan
I can ack Oliver's work, will do so in each patch
Overall
Acked-by: Balbir Singh <bsinghar...@gmail.com>
Balbir Singh
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On Fri, Apr 6, 2018 at 11:26 AM, Nicholas Piggin <npig...@gmail.com> wrote:
> On Thu, 05 Apr 2018 16:40:26 -0400
> Jeff Moyer <jmo...@redhat.com> wrote:
>
>> Nicholas Piggin <npig...@gmail.com> writes:
>>
>> > On Thu, 5 Apr 2018 15:53:07 +1000
On Thu, Apr 5, 2018 at 9:26 PM, Oliver <ooh...@gmail.com> wrote:
> On Thu, Apr 5, 2018 at 5:14 PM, Balbir Singh <bsinghar...@gmail.com> wrote:
>> The pmem infrastructure uses memcpy_mcsafe in the pmem
>> layer so as to convert machine check excpetions into
>>
) and does
not print any error message as the error is treated as
returned via a return value and handled.
Signed-off-by: Balbir Singh <bsinghar...@gmail.com>
---
arch/powerpc/include/asm/mce.h | 3 +-
arch/powerpc/kernel/mce.c | 77 --
2 files chang
returned.
Fixes: ba41e1e1ccb9 ("powerpc/mce: Hookup derror (load/store) UE errors")
Signed-off-by: Balbir Singh <bsinghar...@gmail.com>
---
arch/powerpc/kernel/mce_power.c | 26 --
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/arc
, largely
to keep the patch simple. If needed those optimizations
can be folded in.
Signed-off-by: Balbir Singh <bsinghar...@gmail.com>
Acked-by: Nicholas Piggin <npig...@gmail.com>
---
arch/powerpc/include/asm/string.h | 2 +
arch/powerpc/lib/Makefile | 2 +-
arch
cholas Piggin <npig...@gmail.com> wrote:
> > > On Thu, 5 Apr 2018 09:19:42 +1000
> > > Balbir Singh <bsinghar...@gmail.com> wrote:
> > >
> > >> The pmem infrastructure uses memcpy_mcsafe in the pmem
> > >> layer so as to convert m
On Thu, 5 Apr 2018 09:49:00 +1000
Nicholas Piggin <npig...@gmail.com> wrote:
> On Thu, 5 Apr 2018 09:19:41 +1000
> Balbir Singh <bsinghar...@gmail.com> wrote:
>
> > The code currently assumes PAGE_SHIFT as the shift value of
> > the pfn, this works correc
) and does
not print any error message as the error is treated as
returned via a return value and handled.
Signed-off-by: Balbir Singh <bsinghar...@gmail.com>
---
arch/powerpc/include/asm/mce.h | 3 +-
arch/powerpc/kernel/mce.c | 77 --
2 files chang
, largely
to keep the patch simple. If needed those optimizations
can be folded in.
Signed-off-by: Balbir Singh <bsinghar...@gmail.com>
---
arch/powerpc/include/asm/string.h | 2 +
arch/powerpc/lib/Makefile | 2 +-
arch/powerpc/lib/memcpy_mcsafe_64.S
memcpy_mcsafe
via ioctls.
Balbir Singh (3):
powerpc/mce: Bug fixes for MCE handling in kernel space
powerpc/memcpy: Add memcpy_mcsafe for pmem
powerpc/mce: Handle memcpy_mcsafe
arch/powerpc/include/asm/mce.h | 3 +-
arch/powerpc/include/asm/string.h | 2 +
arch/powerpc/kernel/mce.c
On Wed, 4 Apr 2018 00:24:15 +1000
Oliver O'Halloran <ooh...@gmail.com> wrote:
> Scan the devicetree for an nvdimm-bus compatible and create
> a platform device for them.
>
> Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
> ---
Acked-by: Balbir S
> need to pass in a pointer to the relevant node in the descriptor.
>
> Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
> Acked-by: Dan Williams <dan.j.willi...@intel.com>
> ---
Acked-by: Balbir Singh <bsinghar...@gmail.com>
__
> + },
> +};
> +
> +/* bus wrangling */
> +
> +static int __init of_nvdimm_init(void)
> +{
> + /* register */
> + bus_desc.attr_groups = bus_attr_groups;
> + bus_desc.provider_name = "of_nvdimm";
> + bus_desc.module = THIS_MODULE;
> +
> + /*
gt; }
> EXPORT_SYMBOL_GPL(nvdimm_blk_region_create);
>
> +void nd_region_destroy(struct nd_region *region)
> +{
> + nd_device_unregister(>dev, ND_SYNC);
child_unregister seems to do the same thing, but is expected to be used
as a callback from device_for_each_child()
I'd suggest
> need to pass in a pointer to the relevant node in the descriptor.
>
> Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
> Acked-by: Dan Williams <dan.j.willi...@intel.com>
> ---
Acked-by: Balbir Singh <bsinghar...@gmail.com>
__
his was bolted you might be right
that it is always valid and bolted
> +
> + /* Invalidate the TLB */
> + tlbie(vpn, psize, psize, ssize, 0);
The API also does not clear linear_map_hash_slots[] under DEBUG_PAGEALLOC
> + return 0;
> +}
> +
> +
Balbir Singh.
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on SPARSEMEM_VMEMMAP
> - depends on X86_64 #arch_add_memory() comprehends device memory
> + depends on (X86_64 || PPC_BOOK3S_64) #arch_add_memory() comprehends
> device memory
Reviewed-by: Balbir Singh <bsinghar...@gmail.com>
_
large amount of ZONE_DEVICE memory is being added to the system the
> altmap reduces pressure on main system memory by allowing the mm/
> metadata to be stored on the device itself rather in main memory.
>
> Signed-off-by: Oliver O'Halloran <ooh...@gmail.com>
> ---
Re
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