Messages in this thread | | | Subject | Re: [PATCH v4 1/3] kexec: Move vmcoreinfo out of the kernel's .bss section | From | Juergen Gross <> | Date | Thu, 20 Apr 2017 16:24:41 +0200 |
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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 <ebiederm@xmission.com> > Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> > Cc: Juergen Gross <jgross@suse.com> > Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Xen parts: Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
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