On Wed, Jan 15, 2025 at 10:34 PM James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: > > On Wed, 2025-01-15 at 22:14 +0800, Weizhao Ouyang wrote: > > Currently, when setting efi variables through the runtime service, > > efivarfs cannot sync variable updates properly. Introduce efivarfs > > refresh remount to support efivarfs information updates from other > > sources. > > What other sources could there possibly be? While the Linux kernel has > sole possession of the EFI RT interface after ExitBootServices has been > called, nothing else should be able to update the variables except > efivarfs. This is a guarantee from UEFI so why do you think we can't > rely on it? One route that may exist is: drivers/firmware/efi/test/efi_test.c holds some ioctls to call runtime service. BR, Weizhao > > Regards, > > James >
