Public bug reported:
Hi,
booting the bionic kernel (4.15.0-29-generic) on my Tegra20 device (no
iommu), I found it crashes during display driver setup. The bootlog (and
crash) is attached. Asking on Tegra IRC channel, digetx found that this
is caused by the IPMMU-VMSA driver which is always registered via
initcall. Adding "initcall_blacklist=ipmmu_init" to the kernel
parameters makes it boot fine.
Maybe this buggy driver should be disabled in the config (or fixed
somehow)?
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: bionic
** Attachment added: "bootlog"
https://bugs.launchpad.net/bugs/1783746/+attachment/5168044/+files/paste_1035175
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https://bugs.launchpad.net/bugs/1783746
Title:
ipmmu is always registered
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