[Xen-devel] [PATCH 8/9] x86: check kexec relocation code fits in a page

[Don Slutz]

Also

Reviewed-by: Don Slutz <dslutz at verizon.com>

    -Don Slutz

On 11/06/13 09:49, David Vrabel wrote:
> From: David Vrabel <david.vrabel at citrix.com>
>
> The kexec relocation (control) code must fit in a single page so add a
> link time check for this.
>
> Signed-off-by: David Vrabel <david.vrabel at citrix.com>
> Reviewed-by: Andrew Cooper <andrew.cooper3 at citrix.com>
> ---
>   xen/arch/x86/xen.lds.S |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/xen/arch/x86/xen.lds.S b/xen/arch/x86/xen.lds.S
> index 9600cdf..17db361 100644
> --- a/xen/arch/x86/xen.lds.S
> +++ b/xen/arch/x86/xen.lds.S
> @@ -198,3 +198,5 @@ SECTIONS
>     .stab.indexstr 0 : { *(.stab.indexstr) }
>     .comment 0 : { *(.comment) }
>   }
> +
> +ASSERT(kexec_reloc_size - kexec_reloc <= PAGE_SIZE, "kexec_reloc is too large")