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[Xen-devel] RE: [PATCH 2/6] Change the boot allocator function to support memory add
>From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
>Sent: 2009年6月28日 21:44
>To: Jiang, Yunhong; Jan Beulich; Tim Deegan;
>Subject: Re: [PATCH 2/6] Change the boot allocator function to
>support memory add
>On 28/06/2009 14:24, "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx> wrote:
>>> The undelrying implementation ideas may be okay, but calling these
>>> extensions to the 'boot allocator' makes no sense. The boot
>>> allocator only
>>> exists during boot. The fact that the bitmap it uses persists
>>> beyond boot is
>>> an implementation detail. Perhaps you just need to change the
>> So can I understand the allocator bitmap (i.e. those for
>> something not just about boot allocator, but for generic
>bitmap to remember
>> the page allocation status?
>> Maybe we can just using one bit in page_info to indicate if
>page is allocated
>> in future?
>I think the PGC_ flags could be extended to do this, yes.
>Maybe I will look
Thanks. We try to do this way in the beginning , but in the end gives up
because currently too many direct operation to count_info without any macro
wrapper, and I'm not confident to take over ALL of them.
Shall our patch wait for your changes and do rebase, or shall I still working
on the re-name method (I suspect the previous re-name patch may not be so
important if we have this changes)?
> -- Keir
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