On 2012-11-26 23:48, H. Peter Anvin wrote:

On 11/26/2012 05:15 AM, Tang Chen wrote:

quoted

Hi Wu,

That is really a problem. And, before numa memory got initialized,
memblock subsystem would be used to allocate memory. I didn't find any
approach that could fully address it when I making the patches. There
always be risk that memblock allocates memory on ZONE_MOVABLE. I think
we can only do our best to prevent it from happening.

Your patch is very helpful. And after a shot look at the code, it seems
that acpi_numa_memory_affinity_init() is an architecture dependent
function. Could we do this somewhere which is not depending on the
architecture ?

The movable memory should be classified as a non-RAM type in memblock,
that way we will not allocate from it early on.

Hi Peter,

I have tried to reserved movable memory from bootmem allocator, but the
ACPICA subsystem is initialized later than setting up movable zone.
So still trying to figure out a way to setup/reserve movable zones
according to information from static ACPI tables such as SRAT/MPST etc.

Regards!
Gerry

	-hpa


.

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