linux-kernel - Re: [PATCH hyperv-next v4 06/16] Drivers: hv: Allocate the paravisor SynIC pages when required

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Message-ID: <CAMvTesBMgo_u50C5_FwfdqhGy-1k1GhrMP27BL87DTuZ-ZuV+A@mail.gmail.com>
Date: Fri, 25 Jul 2025 16:23:20 +0800
From: Tianyu Lan <ltykernel@...il.com>
To: Roman Kisel <romank@...ux.microsoft.com>
Cc: alok.a.tiwari@...cle.com, arnd@...db.de, bp@...en8.de, corbet@....net, 
	dave.hansen@...ux.intel.com, decui@...rosoft.com, haiyangz@...rosoft.com, 
	hpa@...or.com, kys@...rosoft.com, mhklinux@...look.com, mingo@...hat.com, 
	rdunlap@...radead.org, tglx@...utronix.de, Tianyu.Lan@...rosoft.com, 
	wei.liu@...nel.org, linux-arch@...r.kernel.org, linux-coco@...ts.linux.dev, 
	linux-doc@...r.kernel.org, linux-hyperv@...r.kernel.org, 
	linux-kernel@...r.kernel.org, x86@...nel.org, apais@...rosoft.com, 
	benhill@...rosoft.com, bperkins@...rosoft.com, sunilmut@...rosoft.com
Subject: Re: [PATCH hyperv-next v4 06/16] Drivers: hv: Allocate the paravisor
 SynIC pages when required

On Tue, Jul 15, 2025 at 6:16 AM Roman Kisel <romank@...ux.microsoft.com> wrote:
>
> Confidential VMBus requires interacting with two SynICs -- one
> provided by the host hypervisor, and one provided by the paravisor.
> Each SynIC requires its own message and event pages.
>
> Refactor and extend the existing code to add allocating and freeing
> the message and event pages for the paravisor SynIC when it is
> present.
>
> Signed-off-by: Roman Kisel <romank@...ux.microsoft.com>

Reviewed-by: Tianyu Lan <tiala@...rosoft.com>