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Date:   Wed, 12 Dec 2018 01:06:24 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Alexey Dobriyan <adobriyan@gmail.com>
Cc:     luto@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de,
        thomas.lendacky@amd.com, hpa@zytor.com, john.stultz@linaro.org,
        x86@kernel.org
Subject: Re: [RFC PATCH 4/4] x86/TSC: Use RDTSCP
Message-ID: <20181212000624.GY27375@zn.tnic>
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On Wed, Dec 12, 2018 at 12:43:08AM +0100, Borislav Petkov wrote:
> > And other code in this file uses "c" for clobber.
> 
> Ok.

Except that clobbers need to be full register names:

./arch/x86/include/asm/msr.h: In function ‘do_hres’:
./arch/x86/include/asm/msr.h:236:2: error: unknown register name ‘c’ in ‘asm’
  asm volatile(ALTERNATIVE_3("rdtsc",
  ^~~

...

-- 
Regards/Gruss,
    Boris.

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