On 06/01/2022 08:28, Jason Gunthorpe wrote:
> On Tue, Dec 28, 2021 at 04:07:15PM +0800, Li Zhijian wrote:
>> + while (length > 0) {
>> + va = (u8 *)(uintptr_t)buf->addr + offset;
>> + bytes = buf->size - offset;
>> +
>> + if (bytes > length)
>> + bytes = length;
>> +
>> + arch_wb_cache_pmem(va, bytes);
> So why did we need to check that the va was pmem to call this?
Sorry, i didn't get you.
I didn't check whether va is pmem, since only MR registered with PERSISTENCE(only pmem can
register this access flag) can reach here.
Thanks
Zhijian
>
> Jason
