Messages in this thread | | | Date | Tue, 14 Jan 2014 12:55:47 +0100 | From | Borislav Petkov <> | Subject | Re: AMD errata 793 (CVE-2013-6885) needs a workaround in Linux? |
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On Tue, Jan 14, 2014 at 09:41:33AM -0200, Henrique de Moraes Holschuh wrote: > I just got this assigned to amd64-microcode in Debian, but it is something > that needs to be worked around by the EFI/BIOS and/or the kernel. > > Since we all know just how well it pans out to depend on BIOS/EFI updates > for *anything*, I'm raising the issue here. IMHO looks like it would be > worthwhile to either set the relevant MSR in the kernel if the BIOS didn't > do it, or at least warn the user of the need for a BIOS/EFI update... > > It is the usual hangs-core type of CPU errata (therefore, the best type > since it won't cause silent data corruption). gcc-produced code managed to > trigger it (in DragonFly BSD).
I think this is a different issue than the dragonfly issue. In any case, if AMD delivers all BIOS with this workaround enabled, we don't need to do anything. And I asked them about it so we'll have an answer soon, I hope.
In any case, I'm on it.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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