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SubjectRe: [PATCH 1/3] xen: off by one error in xen/setup.c
On 08/02/2011 07:07 PM, Konrad Rzeszutek Wilk wrote:
> 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?

Not really, but for the sake of correctness and as cleanup it's good idea.

>
>> }
>>
>> --
>> 1.7.5
>>
>> --
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--
Thanks,
Igor


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