Am 08.11.2013 11:25, schrieb Yasuaki Ishimatsu: > (2013/11/08 18:37), Richard Weinberger wrote: >> Am 08.11.2013 10:34, schrieb Yasuaki Ishimatsu: >>> (2013/11/08 17:05), Richard Weinberger wrote: >>>> Am 08.11.2013 08:33, schrieb Yasuaki Ishimatsu: >>>>> By following works, my system very often fails set_variable() to set new >>>>> variable to efi variable storage and shows "efivars: set_variable() >>>>> failed: >>>>> status=-28" message. >>>>> >>>>> - commit 31ff2f20d9003e74991d135f56e503fe776c127c >>>>> efi: Distinguish between "remaining space" and actually used space >>>>> - commit 8c58bf3eec3b8fc8162fe557e9361891c20758f2 >>>>> x86,efi: Implement efi_no_storage_paranoia parameter >>>>> - commit f8b8404337de4e2466e2e1139ea68b1f8295974f >>>>> Modify UEFI anti-bricking code >>>>> >>>>> When booting my system, remaining space of efi variable storage is about >>>>> 5KB. So there is no room that sets a new variable to the storage. >>>>> >>>>> According to above works, efi_no_storage_paranoia parameter was prepared >>>>> for sane UEFI which can do gc and fulfills spec. But why need a system >>>>> with a sane UEFI set the parameter? It is wrong. A system with a broken >>>>> UEFI should set the parameter. >>>> >>>> And how does one know that his UEFI is broken? >>> >>> I have no idea. But at least, bricked board is broken UEFI. >>> Do you know the issue occurs on several boards or specific board? >> >> On *many* boards including laptops.... >> Please read the history of the whole issue. > > Thank you for your comment. > I has read git log. But there is no information like this. > So I will read them of related threads again. Do you know good threads > to know the history of the issue?
Everything started with an issue that killed Samsung laptops: http://mjg59.dreamwidth.org/22855.html Later it was found that if you write too much into UEFI variables many UEFI implementations will do bad things. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
