linux-kernel - Re: RtlCaptureContext equivalent

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Message-ID: <20160320191156.GA4691@pd.tnic>
Date:	Sun, 20 Mar 2016 20:11:56 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	David Kaplan <davkaplan@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: RtlCaptureContext equivalent

On Sun, Mar 20, 2016 at 03:54:58PM +0200, David Kaplan wrote:
> Hi all
> 
> i'm looking for a function within the kernel (for x86_64/amd64) that I
> can use from my module to save/load cpu context (something like
> Windows' RtlCaptureContext fcn).
> 
> I assume there's something like that available but having a hard time
> tracking it down.

Something like arch/x86/power/cpu.c::save_processor_state() maybe?

I'm assuming you'll want to supply your own struct saved_context
though... And it doesn't save arch regs. There's also __show_regs()
which dumps arch regs and the rest but that is probably not what you
want...

-- 
Regards/Gruss,
    Boris.

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