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DavidFair
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khalford
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khalford
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Jan 15, 2026
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Ah you've beat me to it as my push was rejected, could you include the comment so we don't revert this later on |
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Sorry, yes I've put it back in. |
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We'll need to also re-test RL and Ubuntu still boot with this in BIOS mode, as I'm not sure if the base |
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LGTM |
khalford
previously approved these changes
Jan 15, 2026
We need to force BIOS until we're running EFI and above 4GB decoding everywhere. The kernel and Nvidia drivers will try to use reallocatable BARs from the EFI, but there are none on our existing RL8 hosts because they're running BIOS's with above 4GB decoding disabled. There's a slightl perf degredation on the GPUs and booting (but not a regression as we're already BIOS booting for these images) by using BIOS instead of EFI. But until we get all our hosts to RL9+ with EFI enabled we'll have to save this small perf improvement for the future when we can switch on later.
khalford
approved these changes
Jan 15, 2026
azahmd
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Jan 15, 2026
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We need to force BIOS until we're running EFI and above 4GB decoding everywhere. The kernel and Nvidia drivers will try to use reallocatable BARs from the EFI, but there are none on our existing RL8 hosts because they're running BIOS's with above 4GB decoding disabled.
There's a slightl perf degredation on the GPUs and booting (but not a regression as we're already BIOS booting for these images) by using BIOS instead of EFI. But until we get all our hosts to RL9+ with EFI enabled we'll have to save this small perf improvement for the future when we can switch on later.