On Thu, 2016-05-05 at 14:27 +0000, Kweh, Hock Leong wrote: > > -----Original Message----- > > From: Matt Fleming [mailto:matt@xxxxxxxxxxxxxxxxxxx] > > Sent: Wednesday, May 04, 2016 10:36 PM > > To: Kweh, Hock Leong; Bryan O'Donoghue > > Cc: linux-efi@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Ard > > Biesheuvel; > > joeyli; Borislav Petkov > > Subject: Re: [PATCH] efi/capsule: Make efi_capsule_pending() > > lockless > > > > On Wed, 04 May, at 02:20:42PM, Borislav Petkov wrote: > > > > > > Blergh. > > > > Wilson, Bryan, what kind of rollback support does the Intel Quark > > have if its > > firmware update is interrupted? > > > > The interruption could be for a number of reasons including power > > loss, or > > the example in this case, rebooting due to panic(). > > If not mistaken, the EFI firmware will not update a partially > uploaded binary due to checksum error. > User is required to re-update the efi capsule again on the next boot > up. > If the checksum fails then you're fine since you won't update flash. OTOH if you pull the plug we actually have a backup image - so even a partially flashed update shouldn't brick the system. How well that actually works i.e. is it tested in anger ? Meh - YMMV there fore sure. --- bod -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
