Re: [RFC PATCH rdma-next 08/10] RDMA/rxe: Implement flush execution in responder side

[lizhijian@xxxxxxxxxxx]

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