On Thu, Sep 16, 2021 at 11:49:39AM -0400, Konrad Rzeszutek Wilk wrote:
>On Wed, Sep 01, 2021 at 12:21:35PM +0800, Chao Gao wrote:
>> Currently, swiotlb uses a global index to indicate the starting point
>> of next search. The index increases from 0 to the number of slots - 1
>> and then wraps aroun
On Wed, Sep 01, 2021 at 12:21:35PM +0800, Chao Gao wrote:
> Currently, swiotlb uses a global index to indicate the starting point
> of next search. The index increases from 0 to the number of slots - 1
> and then wraps around. It is straightforward but not cache-friendly
> because the "oldest" slot
Currently, swiotlb uses a global index to indicate the starting point
of next search. The index increases from 0 to the number of slots - 1
and then wraps around. It is straightforward but not cache-friendly
because the "oldest" slot in swiotlb tends to be used first.
Freed slots are probably acce
