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Subject: Re: [PATCH -v2] x86: Add an archinfo dumper module
To: Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@kernel.org>
References: <20160201115601.GD6438@pd.tnic>
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Cc: "Luck, Tony" <tony.luck@intel.com>, Thomas Gleixner <tglx@linutronix.de>,
        Andy Lutomirski <luto@amacapital.net>,
        Peter Zijlstra <peterz@infradead.org>,
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From: "H. Peter Anvin" <hpa@zytor.com>
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Date: Sun, 7 Feb 2016 16:01:06 -0800
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On 02/04/16 07:22, Borislav Petkov wrote:
> Here's v2 with the stuff we talked about, implemented. I've added
> 'control_regs' file too so that you can do:
> 
> $ cat /sys/kernel/debug/x86/archinfo/control_regs
> CR4: [-|-|SMEP|OSXSAVE|-|-|-|-|OSXMMEXCPT|OSFXSR|-|PGE|MCE|PAE|PSE|-|-|-|-]: 0x1406f0
> 
> for example. Yeah, only CR4 right now.
> 
> Off the top of my head, we would need "msrs" which dumps EFER and a
> bunch of other interesting MSRs along with the names of the set bits.

Is there a reason why all this parsing has to be done in kernel space?

	-hpa