On Thu, Mar 07, 2013 at 12:38:49PM -0800, H. Peter Anvin wrote: > On 03/07/2013 09:40 AM, Seth Forshee wrote: > > We know that with some firmware implementations writing too much data to > > UEFI variables can lead to bricking machines. Recent changes attempt to > > address this issue, but for some it may still be prudent to avoid > > writing large amounts of data until the solution has been proven on a > > wide variety of hardware. > > > > Crash dumps or other data from pstore can potentially be a large data > > source. Add a new option, CONFIG_EFI_VARS_PSTORE, which can be set to N > > to avoid using efivars as a backend to pstore. > > What about a command line option? That could be done. I'm assuming you want this instead of a config option, defaulted to on? How would you feel about a config option for the default value of the command line option? I intend to default this to off in Ubuntu for a while as a colleague's machine was recently bricked on two different occasions after the kernel oopsed. The config option would simplify things a bit for us, though we could always carry a patch changing the default value. > > -#ifdef CONFIG_PSTORE > > +#if defined(CONFIG_PSTORE) && defined(CONFIG_EFI_VARS_PSTORE) > > Redundant. Yes, good point. Thanks, Seth -- 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
