The biggest continual physical memory we can get during the kernel running?

[Peter Chen <hzpeterchen@xxxxxxxxx>]

Hi all,

I have two questions about alloc continual physical memory, hope you can give me some tips.

1. How biggest continual physical memory the kernel can be ensured to give during the kernel running?
2. What is the threshold value for  alloc_page and kmalloc?

This memory is demanded to alloc dymatically, not using alloc_bootmem during the system bootup.

Thank you in advance

Best Regards,
Peter Chen