https://bugzilla.kernel.org/show_bug.cgi?id=218982
--- Comment #18 from Tony Houghton (h...@realh.co.uk) --- (In reply to Vasant Hegde from comment #13) > Thanks for the dmesg Tony. Thank you for investigating and helping; sorry about the delay in replying. > Only other noticeable difference is X2APIC support. Looks like x2apic is not > enabled in BIOS. But driver will use MSI interrupt and it should work fine. > (I am referring to iommu_init_irq() code path). Is that likely to be significant? I Googled x2apic, and apparently it doesn't do much besides provide support for more than 256 CPU cores. Again, I can't find a BIOS option for this, but I did eventually find one to disable IOMMU (see below). > By any chance do you see any message on console once you resume the system? No, the display output stays off, and so does networking, so I can't see anything. All that happens is the fans and LEDs etc come on, but the system is completely unresponsive. My keyboard lights up too, but the caps lock LED doesn't toggle when I press the caps lock key. > Just to double check, can you try out below change? This is queued for > v6.13 merge window. Basically this patch will skip copy_device_table() code > path in resume path (This is to rule out the resume code taking wrong path > in copy_device_table() function). ... > commit 3f6eeada6930056c38f20964120ac402cf0030b9 I've added that patch, and it doesn't make a difference that I can tell. I see that de111f6b4f6a3010020825d22a068f416bc29c95, which causes the issue for me, is also very simple. AIUI, de111f6b4f6a removes the calls to iommu_enable_gt from early_enable_iommu and early_enable_iommus and calls iommu_enable_gt from iommu_init_pci instead. Then the patch from <https://lore.kernel.org/linux-iommu/20240621101533.20216-1-vasant.he...@amd.com/> restored iommu_enable_gt to early_enable_iommu but didn't affect the other two locations. So that makes me think calling iommu_enable_gt from iommu_init_pci is what's upsetting my board. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
