On 06/15/2017 07:04 AM, Joerg Roedel wrote:
Hi Bjorn, On Fri, Apr 07, 2017 at 04:32:18PM +0200, Joerg Roedel wrote:From: Joerg Roedel <jroedel@xxxxxxx> ATS is broken on this hardware and causes IOMMU stalls and system failure. Disable ATS on these devices to make them usable again with IOMMU enabled. Note that the commit in the Fixes-tag is not buggy, it just uncovers the problem in the hardware by increasing the ATS-flush rate. Fixes: b1516a14657a ('iommu/amd: Implement flush queue') Signed-off-by: Joerg Roedel <jroedel@xxxxxxx> --- drivers/pci/quirks.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)Any more objections on this patch? Please let me know if you want to have something changed.
The other patch seems to fix this issue without disabling ATS. Isn't that better?
