Re: [PATCH] Revert "iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock"

On Fri, Jun 21, 2019 at 10:32:05AM +0800, Peter Xu wrote: > This reverts commit 7560cc3ca7d9d11555f80c830544e463fcdb28b8. Applied and on its way upstream, thanks. Joerg

Re: [PATCH] Revert "iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock"

Quoting Peter Xu (2019-06-21 03:32:05) > This reverts commit 7560cc3ca7d9d11555f80c830544e463fcdb28b8. > > With 5.2.0-rc5 I can easily trigger this with lockdep and iommu=pt: > > == > WARNING: possible circular locking dependency

[PATCH] Revert "iommu/vt-d: Fix lock inversion between iommu->lock and device_domain_lock"

This reverts commit 7560cc3ca7d9d11555f80c830544e463fcdb28b8. With 5.2.0-rc5 I can easily trigger this with lockdep and iommu=pt: == WARNING: possible circular locking dependency detected 5.2.0-rc5 #78 Not tainted