Re: MT76x2U crashes XHCI driver on AMD Ryzen system
From: Joerg Roedel <joro@8bytes.org>
Date: 2019-02-28 13:40:34
Also in:
linux-iommu, lkml
Possibly related (same subject, not in this thread)
- 2019-01-13 · Re: MT76x2U crashes XHCI driver on AMD Ryzen system · Lorenzo Bianconi <hidden>
- 2019-01-11 · Re: MT76x2U crashes XHCI driver on AMD Ryzen system · Rosen Penev <hidden>
- 2019-01-11 · Re: MT76x2U crashes XHCI driver on AMD Ryzen system · Lorenzo Bianconi <hidden>
- 2019-01-10 · MT76x2U crashes XHCI driver on AMD Ryzen system · Rosen Penev <hidden>
On Thu, Feb 28, 2019 at 01:19:48PM +0100, Stanislaw Gruszka wrote:
Nevermind, the patch is wrong, s->dma_address is initalized in sg_num_pages().
Yes, it is. In sg_num_pages() the offset into the IOMMU mapping is stored in s->dma_address, taking also the segment boundary mask into account. map_sg() later only adds the base-address to that. Regards, Joerg