Baolu,
I tried to apply your patch after checking out 6.2-rc3 and origin/master
but there were there the following errors.
git apply amd-iommu-amdgpu-boot-crash-2.patch
error: patch failed: drivers/pci/ats.c:382
error: drivers/pci/ats.c: patch does not apply
I manually changed drivers/pci/ats.c as shown in the patch. I built
6.2-rc3 + the patch. 6.2-rc3 with the patch had the same black screen
problem when booting. I added rd.driver.blacklist=amdgpu on the kernel
command line to prevent amdgpu from being started while the initramfs
was in use, and the black screen happened later in the boot as I
described in my previous email. The journal showed the same two warnings
and null pointer dereference which made amdgpu crash as I reported.
Thanks,
Matt
