| Date | Mon, 4 Apr 2016 18:23:38 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v5 0/9] Improve non-"safe" MSR access failure handling |
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On Sat, Apr 02, 2016 at 07:01:31AM -0700, Andy Lutomirski wrote: > There are two parts here: > > ***** FIRST PART: EARLY EXCEPTIONS ***** > > The first few patches move some early panic code into C, add pt_regs > to early exception handling, and make fancy exception handlers work early. > > ***** SECOND PART: MSRs ***** > > Setting CONFIG_PARAVIRT=y has an unintended side effect: it silently > turns all rdmsr and wrmsr operations into the safe variants without > any checks that the operations actually succeed.
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FWIW:
Reviewed-by: Borislav Petkov <bp@suse.de>
Definitely a step in the right direction, regardless of how we're going to be doing early_printk(), which is a tangential topic. This pile could be taken for a spin in tip.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply.
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