Re: [PATCH] x86: adjust generic_get_mtrr() for 64-bit
From: Jan Beulich
Date: Mon Jul 23 2012 - 03:02:19 EST
>>> On 06.07.12 at 23:38, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
> On Fri, Jul 6, 2012 at 7:14 AM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
>> Needing to deal with potentially large memory configurations, the
>> variables here should be "unsigned long" instead of "unsigned int".
>>
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>>
>> ---
>> arch/x86/kernel/cpu/mtrr/generic.c | 8 ++++----
>> 1 file changed, 4 insertions(+), 4 deletions(-)
>>
>> --- 3.5-rc5/arch/x86/kernel/cpu/mtrr/generic.c
>> +++ 3.5-rc5-x86-mtrr-generic-types/arch/x86/kernel/cpu/mtrr/generic.c
>> @@ -514,8 +514,8 @@ generic_get_free_region(unsigned long ba
>> static void generic_get_mtrr(unsigned int reg, unsigned long *base,
>> unsigned long *size, mtrr_type *type)
>> {
>> - unsigned int mask_lo, mask_hi, base_lo, base_hi;
>> - unsigned int tmp, hi;
>> + unsigned long mask_lo, mask_hi, base_lo, base_hi, tmp;
>> + unsigned int hi;
>
> _lo, _hi means we want it as 32bit.
>
> or we just change them to u32 to make it more clear ?
Agreed, it's really only "tmp" that needs to be "unsigned long".
I'll send out a v2 soon, at once converting lo/hi to u32.
Jan
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