Joerg Roedel
2020-Jun-02 14:23 UTC
[PATCH v2 00/33] iommu: Move iommu_group setup to IOMMU core code
Hi Jerry, On Mon, Jun 01, 2020 at 05:02:36PM -0700, Jerry Snitselaar wrote:> > Yeah, that will solve the panic. >If you still see the kdump faults, can you please try with the attached diff? I was not able to reproduce them in my setup. Regards, Joerg diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index b5ea203f6c68..5a6d509f72b6 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1680,8 +1680,12 @@ static void probe_alloc_default_domain(struct bus_type *bus, static int iommu_group_do_dma_attach(struct device *dev, void *data) { struct iommu_domain *domain = data; + int ret = 0; - return __iommu_attach_device(domain, dev); + if (!iommu_is_attach_deferred(group->domain, dev)) + ret = __iommu_attach_device(group->domain, dev); + + return ret; } static int __iommu_group_dma_attach(struct iommu_group *group)