On 6/22/2022 6:54 PM, Christoph Hellwig wrote:
Thanks,
this looks pretty good to me. A few comments below:
Thanks for your review.
On Fri, Jun 17, 2022 at 10:47:41AM -0400, Tianyu Lan wrote:
+/**
+ * struct io_tlb_area - IO TLB memory area descriptor
+ *
+ * This is a single area with a
I will build the next RFC version of 64-bit swiotlb on top of this patch (or
next version of this patch), so that it will render a more finalized view of
32-bt/64-bit plus multiple area.
Thank you very much!
Dongli Zhang
On 6/22/22 3:54 AM, Christoph Hellwig wrote:
> Thanks,
>
> this looks
Thanks,
this looks pretty good to me. A few comments below:
On Fri, Jun 17, 2022 at 10:47:41AM -0400, Tianyu Lan wrote:
> +/**
> + * struct io_tlb_area - IO TLB memory area descriptor
> + *
> + * This is a single area with a single lock.
> + *
> + * @used:The number of used IO TLB block.
>
From: Tianyu Lan
Traditionally swiotlb was not performance critical because it was only
used for slow devices. But in some setups, like TDX/SEV confidential
guests, all IO has to go through swiotlb. Currently swiotlb only has a
single lock. Under high IO load with multiple CPUs this can lead to
