linux-kernel - Re: [RFC PATCH v3 04/21] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms

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Message-ID: <ZrugxU6OHlLRQZ_j@google.com>
Date: Tue, 13 Aug 2024 11:07:01 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: David Woodhouse <dwmw2@...radead.org>
Cc: kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>, 
	Jonathan Corbet <corbet@....net>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, 
	Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, Paul Durrant <paul@....org>, Peter Zijlstra <peterz@...radead.org>, 
	Juri Lelli <juri.lelli@...hat.com>, Vincent Guittot <vincent.guittot@...aro.org>, 
	Dietmar Eggemann <dietmar.eggemann@....com>, Steven Rostedt <rostedt@...dmis.org>, 
	Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>, 
	Daniel Bristot de Oliveira <bristot@...hat.com>, Valentin Schneider <vschneid@...hat.com>, Shuah Khan <shuah@...nel.org>, 
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	jalliste@...zon.co.uk, sveith@...zon.de, zide.chen@...el.com, 
	Dongli Zhang <dongli.zhang@...cle.com>, Chenyi Qiang <chenyi.qiang@...el.com>
Subject: Re: [RFC PATCH v3 04/21] UAPI: x86: Move pvclock-abi to UAPI for x86 platforms

On Wed, May 22, 2024, David Woodhouse wrote:
> From: Jack Allister <jalliste@...zon.com>
> 
> KVM provides a new interface for performing a fixup/correction of the KVM
> clock against the reference TSC. The KVM_[GS]ET_CLOCK_GUEST API requires a
> pvclock_vcpu_time_info, as such the caller must know about this definition.
> 
> Move the definition to the UAPI folder so that it is exported to usermode
> and also change the type definitions to use the standard for UAPI exports.

Shouldn't this be order before the introduction of KVM_[GS]ET_CLOCK_GUEST?