Messages in this thread | | | Date | Sat, 18 Jan 2014 12:31:43 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH] x86, CPU, AMD: Add workaround for family 16h, erratum 793 |
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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
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