[lkml]   [2017]   [Apr]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v4 1/3] kexec: Move vmcoreinfo out of the kernel's .bss section
On 20/04/17 13:39, Xunlei Pang 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.
> Suggested-by: Eric Biederman <>
> Cc: Michael Holzheu <>
> Cc: Juergen Gross <>
> Signed-off-by: Xunlei Pang <>

Xen parts: Reviewed-by: Juergen Gross <>


 \ /
  Last update: 2017-04-20 16:25    [W:0.147 / U:10.800 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site