| Message ID | 20220913175019.1483658-1-vicamo.yang@canonical.com |
|---|---|
| Headers | show |
| Series | use IOMMU passthrough mode for Intel IPUs on Intel Raptor Lake platforms | expand |
You-Sheng Yang kirjoitti 13.9.2022 klo 20.50: > From: "You-Sheng Yang (vicamo)" <vicamo.yang@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/1989041 > > [Impact] > > Intel iommu was turned on by default in mainline build v5.15.5 or jammy > -generic kernel 5.15.0-12.12. This would breaks IPU6. > > For TGL and ADL platforms, it has been fixed in bug 1958004 for oem-5.14 and > above. This patch adds a new ID for RPL. > > [Fix] > > Use IOMMU passthrough mode for IPU6 as it has its own iommu hardware. > > [Test Case] > > Apply the fix and kernel should print a new info line: > > Passthrough IOMMU for integrated Intel IPU > > and IPU6 camera should continue to work without intel_iommu=off > work-around. > > [Where problems could occur] > > No. That's what it should have been done. > > [Other Info] > > Nominates only oem-6.0 and unstable for we have RPL IPU6 enabled on oem-6.0 > and newer. > > zouxiaoh (1): > UBUNTU: SAUCE: iommu: intel-ipu: use IOMMU passthrough mode for Intel > IPUs on Raptor Lake > > drivers/iommu/intel/iommu.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > applied to oem-6.0 but as khfeng said, this should go in mainline
From: "You-Sheng Yang (vicamo)" <vicamo.yang@canonical.com> BugLink: https://bugs.launchpad.net/bugs/1989041 [Impact] Intel iommu was turned on by default in mainline build v5.15.5 or jammy -generic kernel 5.15.0-12.12. This would breaks IPU6. For TGL and ADL platforms, it has been fixed in bug 1958004 for oem-5.14 and above. This patch adds a new ID for RPL. [Fix] Use IOMMU passthrough mode for IPU6 as it has its own iommu hardware. [Test Case] Apply the fix and kernel should print a new info line: Passthrough IOMMU for integrated Intel IPU and IPU6 camera should continue to work without intel_iommu=off work-around. [Where problems could occur] No. That's what it should have been done. [Other Info] Nominates only oem-6.0 and unstable for we have RPL IPU6 enabled on oem-6.0 and newer. zouxiaoh (1): UBUNTU: SAUCE: iommu: intel-ipu: use IOMMU passthrough mode for Intel IPUs on Raptor Lake drivers/iommu/intel/iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)