Jin Dongming wrote:
>>
>> switch (len) {
>> - case 8:
>> - *(u64 *) val = result;
>> - break;
>> - case 1:
>> - case 2:
>> case 4:
>> - memcpy(val, (char *)&result, len);
>
> Here the parameter len is not used for reading data from ioapic register,
> before switch case
> the value of ioapic register has been read by ioapic_read_indirect().
>
Yeah, it's right, but it's rarely operation that guest using incorrect width to
access
the registers, so i don't think it's worthy to move the width judgment before
the real
registers read.
>
>> + *(u32 *) val = result;
>> break;
>> +
>> default:
>> printk(KERN_WARNING "ioapic: wrong length %d\n", len);
>
> And I think here is not good to print warning message. Maybe it is better to
> do
> such kind of checking at the first of this function before
> ioapic_read_indirect().
>
ditto
Thanks for your review, Jin!
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