linux-kernel - Re: [RFC PATCH v2 06/34] x86/msr: Use the alternatives mechanism to read PMC

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Message-ID: <9268e169-554d-43c8-a00c-f43c274f6116@zytor.com>
Date: Wed, 23 Apr 2025 00:40:40 -0700
From: Xin Li <xin@...or.com>
To: Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-hyperv@...r.kernel.org, virtualization@...ts.linux.dev,
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        linux-hwmon@...r.kernel.org, netdev@...r.kernel.org,
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Subject: Re: [RFC PATCH v2 06/34] x86/msr: Use the alternatives mechanism to
 read PMC

On 4/22/2025 2:28 AM, Juergen Gross wrote:
> 
> I have worked rather hard to make it less intrusive, especially by removing
> the paravirt specific code patching (now all done via alternative patching)
> and by removing 32-bit Xen PV mode.

I looked at the optimization, and it is a nice improvement.