[PATCH v3 1/3] kexec: Move vmcoreinfo out of the kernel's .bss section
Petr Tesarik
ptesarik at suse.cz
Tue Mar 21 02:27:56 PDT 2017
On Mon, 20 Mar 2017 13:50:31 +0800
Xunlei Pang <xlpang at redhat.com> wrote:
> As Eric said,
> "what we need to do is move the variable vmcoreinfo_note out
> of the kernel's .bss section. And modify the code to regenerate
> and keep this information in something like the control page.
>
> Definitely something like this needs a page all to itself, and ideally
> far away from any other kernel data structures. I clearly was not
> watching closely the data someone decided to keep this silly thing
> in the kernel's .bss section."
>
> This patch allocates extra pages for these vmcoreinfo_XXX variables,
> one advantage is that it enhances some safety of vmcoreinfo, because
> vmcoreinfo now is kept far away from other kernel data structures.
Yes, I like this patch set very much now. Thank you!
Petr T
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