Re: [PATCH 0/3] Cleanup kdump memmap= passing and e820 usage

Yinghai Lu
2013-01-30T22:49:29Z

On Wed, Jan 30, 2013 at 2:41 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> On 01/30/2013 02:29 PM, Eric W. Biederman wrote:
> The bigger question is if we need a separate value from the current
> E820_RESERVED_KERN. Since it is always easier to have multiple values
> with the same semantics than it is to have too few, I would still prefer
> we added a new E820_RESERVED_KDUMP, which would then be 2000000001.

current for E820_RESERVED_KERN: during filling memblock.memory,
it will be treated as E820_RAM, and also memblock.reserve already have entries
for them.

For E820_RESERVED_KDUMP, looks only usage is for kernel to find saved_max_pfn.

So we may have to separate them.