Re: [PATCH v2 3/3] paravirt: rename paravirt_enabled to paravirt_legacy

[Borislav Petkov]

On Wed, Feb 17, 2016 at 04:21:56PM -0500, Boris Ostrovsky wrote:
> That's exactly the point: if something is mapped it's an error for a
> non-PV kernel.

How would something be mapped there? __PAGE_OFFSET is
0xffff880000000000.

Or are you thinking about some insanely b0rked kernel code mapping stuff
in there?

> By removing paravirt_enabled() we may miss those errors. Worse, I think we
> may even crash while doing pagetable walk (although it's probably better to
> crash here than to use an unexpected translation in real code somewhere)

Well, if this is the only site which keeps paravirt_enabled() from being
buried, we need to think about a better way to detect a hypervisor.
Maybe we should look at x86_hyper, use CPUID(0x4...) or something else.

What's your preference?

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.