This bug is awaiting verification that the linux-azure- nvidia-6.14/6.14.0-1003.3 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-azure- nvidia-6.14' to 'verification-done-noble-linux-azure-nvidia-6.14'. If the problem still exists, change the tag 'verification-needed-noble- linux-azure-nvidia-6.14' to 'verification-failed-noble-linux-azure- nvidia-6.14'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-noble-linux-azure-nvidia-6.14-v2 verification-needed-noble-linux-azure-nvidia-6.14 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-nvidia-6.14 in Ubuntu. https://bugs.launchpad.net/bugs/2116207 Title: Backport: KVM: arm64: Map GPU device memory as cacheable Status in linux-nvidia-6.14 package in Ubuntu: Invalid Status in linux-nvidia-6.14 source package in Noble: Fix Committed Bug description: This series just made linux-next and is expected to land in v6.17. It adds support for device cacheable memory within a VM and is needed to support GPU PT on NVIDIA Grace systems. Lore discussion: https://lore.kernel.org/all/[email protected]/ Upstream SHAs (linux-next): 8cc9dc1ae4fb KVM: arm64: Rename the device variable to s2_force_noncacheable 216887f79d98 KVM: arm64: Assume non-PFNMAP/MIXEDMAP VMAs can be mapped cacheable 2a8dfab26677 KVM: arm64: Block cacheable PFNMAP mapping 0c67288e0c8b KVM: arm64: Allow cacheable stage 2 mapping using VMA flags f55ce5a6cd33 KVM: arm64: Expose new KVM cap for cacheable PFNMAP We currently hold a NVIDIA SAUCE patch in the -nvidia 6.14 HWE (b244d1e5cdeb NVIDIA: SAUCE: KVM: arm64: determine memory type from VMA) that supports this function. Revert this patch and backport the series to 6.14 HWE. Note that only 1 patch (f55ce5a6cd33) did not pick cleanly due to some context collisions. These were addressed during the pick as indicated in the commit message. Tested by performing GPU PT on GB200 with 1 and 4 GPUs and running CUDA workloads within the VM. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-nvidia-6.14/+bug/2116207/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
