Re: [PATCH] x86, CPU, AMD: Add workaround for family 16h, erratum 793

Pavel Machek
2014-01-18T11:31:46Z

On Sat 2014-01-18 12:26:20, Borislav Petkov wrote:
> On Sat, Jan 18, 2014 at 12:08:29PM +0100, Pavel Machek wrote:
> > ?? By the time userspace is booted, you have overwritten the MSR, and
> > information, if the BIOS is buggy, was lost.
>
> Bullshit - if you don't apply the workaround, the bit in the MSR remains
> unset.

If you do not apply the workaround, you have the buggy system that may
or may not boot. There's even CVE for it.

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html