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List:       xen-devel
Subject:    Re: [Xen-devel] [PATCH v2 1/2] x86/msr: Carry on after a non-"safe" MSR access fails without !panic_
From:       "H. Peter Anvin" <hpa () zytor ! com>
Date:       2015-09-30 18:32:00
Message-ID: 560C2AA0.5040708 () zytor ! com
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On 09/21/2015 09:36 AM, Linus Torvalds wrote:
> 
> How many msr reads are <i>so</i> critical that the function call
> overhead would matter? Get rid of the inline version of the _safe()
> thing too, and put that thing there too.
> 

Probably only the ones that may go in the context switch path.

	-hpa



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