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Date:   Mon, 4 Mar 2019 16:06:54 -0800
From:   Fenghua Yu <>
To:     Konrad Rzeszutek Wilk <>
Cc:     Thomas Gleixner <>,
        Ingo Molnar <>, Borislav Petkov <>,
        H Peter Anvin <>,
        Paolo Bonzini <>,
        Dave Hansen <>,
        Ashok Raj <>,
        Peter Zijlstra <>,
        Ravi V Shankar <>,
        Xiaoyao Li <>,
        linux-kernel <>,
        x86 <>,
Subject: Re: [PATCH v4 00/17] x86/split_lock: Enable #AC exception for split
 locked accesses

On Mon, Mar 04, 2019 at 04:55:05PM -0500, Konrad Rzeszutek Wilk wrote:
> > This capability may also find usage in cloud. A user process with split
> > lock running in one guest can block other cores from accessing shared
> > memory during its split locked memory access. That may cause overall
> > system performance degradation.
> "shared memory" ? As in memory shared between two guests?

Maybe I should remove the "shared" here.



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