Re: [PATCH] To crash dump, we need keep other memory type exceptE820_RAM, because other type come from BIOS or firmware is used by othercode(for example: PCI_MMCONFIG).

[H. Peter Anvin]

On 11/01/2012 01:49 AM, Zhang, Jun wrote:
> Hello, Anvin
> 
> Thank for your advice.
> 
> Hello, All
> 
> the next patch is made by 2), please review it. Thanks!
> 

No, it is not.

You are still modifying the behavior of the kernel depending on
CONFIG_CRASH_DUMP.

CONFIG_CRASH_DUMP doesn't mean "we are doing a crash dump".  It means
"it is possible to use this kernel to do a crash dump".

Either you are using standard kernel parameters in a standard way which
is what option 2 was supposed to be -- it should require no kernel
changes! -- or you have to put something in a code path specific to a
crash dump.

	-hpa

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