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SubjectRe: [PATCH 1/3] xen: off by one error in xen/setup.c
On Tue, Aug 02, 2011 at 11:45:23AM +0200, Igor Mammedov wrote:
> Do not try to initialize pfn beyond of available address space.
>
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> arch/x86/xen/setup.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
> index 60aeeb5..2221b05 100644
> --- a/arch/x86/xen/setup.c
> +++ b/arch/x86/xen/setup.c
> @@ -69,7 +69,7 @@ static void __init xen_add_extra_mem(unsigned long pages)
>
> xen_max_p2m_pfn = PFN_DOWN(extra_start + size);
>
> - for (pfn = PFN_DOWN(extra_start); pfn <= xen_max_p2m_pfn; pfn++)
> + for (pfn = PFN_DOWN(extra_start); pfn < xen_max_p2m_pfn; ++pfn)
> __set_phys_to_machine(pfn, INVALID_P2M_ENTRY);

Did this actually break anything?

> }
>
> --
> 1.7.5
>
> --
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