[PATCH v5 00/10] kexec-tools, x86: E820 memmap pass for kdump
WANG Chao
chaowang at redhat.com
Thu Apr 10 20:05:19 PDT 2014
On 04/10/14 at 05:12pm, WANG Chao wrote:
> Hi, all
>
> (Sorry for this late update. I was occupied with something else)
>
> This patchset enables passing memory map via E820 map on x86 platform instead
> of memmap=exactmap. It's a better design and will solve the following problem
> so far:
>
> - kernel cmdline is limited resource and large machines tend to have many
> memory ranges that may excceed kernel cmdline limit size.
> - kASLR doesn't work with memmap=exactmap, because kASLR happens early than
> user defined memmap=exactmap takes effect.
>
> Unfortunately, saved_max_pfn still got its user out there (calgry pci, it looks
> like the only one). So for backward compatibility, I'm introducing a new option
> --pass-memmap-cmdline to force kexec-tools to pass memmap=exactmap, the old way.
>
> This patchset contains massive updates from the previous one. I take some
> suggestions from reviewers. I try to split the changes into smaller pieces and
> keep the whole change as minimal as I can so it wouldn't be too harsh to review
> the patch.
I messed up this patchset and ended up with some duplicated patches :(
Please ignore this patchset and take a look at the other series I just
sent out with "RESEND" suject prefix.
Thanks
WANG Chao
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