On 01 Mar 2006 09:10:58 +0800, Zou Nan hai <[email protected]> wrote:
> on X86_64, swiotlb buffer is allocated in mem_init, after memmap and vfs cache allocation.
>
> On platforms with huge physical memory,
> large memmap and vfs cache may eat up all usable system memory
> under 4G.
>
> Move swiotlb_init early before memmap is allocated can
> solve this issue.
Shouldn't memmap be allocated from memory above 4G (if available)? Using
up lots of <4G memory on something that doesn't need to be below 4G
sounds like a poor use of resources.
-Tony
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