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 at xmission.com> > Cc: Michael Holzheu <holzheu at linux.vnet.ibm.com> > Cc: Juergen Gross <jgross at suse.com> > Signed-off-by: Xunlei Pang <xlpang at redhat.com> Xen parts: Reviewed-by: Juergen Gross <jgross at suse.com> Juergen
