mok: allocate MOK config table as BootServicesData #361
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Linux kernel is picky when reserving the memory for x86 and it only expects BootServicesData: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/platform/efi/quirks.c?h=v5.11#n254 Otherwise, the following error would show during system boot: Apr 07 12:31:56.743925 localhost kernel: efi: Failed to lookup EFI memory descriptor for 0x000000003dcf8000 Although BootServicesData would be reclaimed after ExitBootService(), linux kernel reserves MOK config table when it detects the existence of the table, so it's fine to allocate the table as BootServicesData. Signed-off-by: Gary Lin <glin@suse.com>
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Downstream bug report |
9 tasks
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The kernel warning seems to be a bug in the mokvar driver in Linux kernel: Per UEFI Spec, InstallConfigurationTable() expects the list allocated in EfiRuntimeServiceData. We can revert the allocation type back to EfiRuntimeServiceData once the patch lands Linux kernel. |
9 tasks
9 tasks
9 tasks
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Linux kernel is picky when reserving the memory for x86 and it only
expects BootServicesData:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/platform/efi/quirks.c?h=v5.11#n254
Otherwise, the following error would show during system boot:
Apr 07 12:31:56.743925 localhost kernel: efi: Failed to lookup EFI memory descriptor for 0x000000003dcf8000
Although BootServicesData would be reclaimed after ExitBootService(),
linux kernel reserves MOK config table when it detects the existence of
the table, so it's fine to allocate the table as BootServicesData.
Signed-off-by: Gary Lin glin@suse.com