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SubjectRe: [PATCH 2.6.24] mm: BadRAM support for broken memory
Ingo Molnar wrote:
>> How is this different from:
>> memmap=<size>$<len>
>> ... ?
> it's the inverse? When we identify bad areas of RAM, we really want to
> "punch holes" into the existing memory map. So 'badram=' or
> 'excludemem=' would be nicer and easier to use.
> Or extend 'memmap=' with an inverse parameter: memmap=!0x10000000$1M
> would exclude a 1MB region at 256MB physical.

My understanding is that the $-form (as opposed to the @-form or #-form)
is exactly that:

[KNL,ACPI] Mark specific memory as reserved.
Region of memory to be used, from ss to ss+nn.

"Reserved" usually means "don't use as either memory or free address space".


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