Messages in this thread | | | Date | Fri, 31 May 2013 13:06:09 +0200 (CEST) | From | Jiri Kosina <> | Subject | Re: [regression, bisected] x86: efi: Pass boot services variable info to runtime code |
| |
On Fri, 31 May 2013, Ingo Molnar wrote:
> So this change needs to be reverted or fixed.
I don't think anyone is arguing against that.
My remark was purely to describe the current status quo and help to understand what exactly is happening, i.e.:
- QueryVariableInfo() should be a valid thing to do from inside boot environment, according to the spec - now we see that at least SGI bios (an probably other incarnations) think otherwise - if we are not able to fix / work around the bug in BIOS (*), we have to make a choice between two evils -- either increase likelyhood of bricking certain machines due to filling the EFI storage space, or break booting on broken BIOSen - the theory is that Borislav's 1:1 mapping patches will work this around; one of the supporting arguments being that it's probably what Windows is doing. I believe Borislav is in the process of testing this. But the patches are not ready for mainline yet.
(*) If one would be naive enough, he'd believe that the pressure should be put on the BIOS writers instead of OS to fix the bug :)
-- Jiri Kosina SUSE Labs
| |