Messages in this thread | | | Date | Thu, 17 Sep 2015 11:31:34 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH 0/3] x86/paravirt: Fix baremetal paravirt MSR ops |
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On Thu, Sep 17, 2015 at 09:19:20AM +0200, Ingo Molnar wrote: > Most big distro kernels on bare metal have CONFIG_PARAVIRT=y (I checked Ubuntu and > Fedora), so we are potentially exposing a lot of users to problems.
+ SUSE.
> Crashing the bootup on an unknown MSR is bad. Many MSR reads and writes are > non-critical and returning the 'safe' result is much better than crashing or > hanging the bootup.
... and prepending all MSR accesses with feature/CPUID checks is probably almost impossible.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply. --
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