Geert Uytterhoeven wrote:
> On Mon, 3 Dec 2007, Milton Miller wrote:
>> Chris, as you can see, PS3 needs to allocate 1/8th of total initial memory to
>> add any more memory. Geoff, can you predict what linear address the
>> additional memory will occupy? Judging from the attempted address toa add,
>> maybe not. If not, my only thought is to pre-reserve an additional page and
>> consume it on the first add. Additional adds will likely draw from the first
>> added region, pinning.
>
> To me it sounds a bit strange that hotplug memory relies on having huge
> contiguous blocks of memory available. If this isn't done very early in the
> boot process, changes are high it will fail.
>
> Would it be possible to allocate the memory from the newly added block, which
> is guaranteed to be unfragmented?
Yes, this sounds like a cleaner solution than pre-allocating, as the memory is
there and its properties are known.
-Geoff
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