linux-kernel - RE: [PATCH v2 1/2] x86/hyperv: Fix hyperv_pcpu_input

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Message-ID: <SA1PR21MB1335F1236B20CD37553B6DEEBF5BA@SA1PR21MB1335.namprd21.prod.outlook.com>
Date:   Thu, 15 Jun 2023 04:57:06 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        "bp@...en8.de" <bp@...en8.de>
CC:     KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will@...nel.org" <will@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        Wei Liu <wei.liu@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "x86@...nel.org" <x86@...nel.org>
Subject: RE: [PATCH v2 1/2] x86/hyperv: Fix hyperv_pcpu_input_arg handling
 when CPUs go online/offline

> From: Michael Kelley (LINUX) <mikelley@...rosoft.com>
> Sent: Thursday, June 8, 2023 7:39 AM
> To: bp@...en8.de
> 
> From: Wei Liu <wei.liu@...nel.org>
> >
> > On Tue, May 23, 2023 at 10:14:21AM -0700, Michael Kelley wrote:
> > [...]
> > > diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
> > > index 0f1001d..3ceb9df 100644
> > > --- a/include/linux/cpuhotplug.h
> > > +++ b/include/linux/cpuhotplug.h
> > > @@ -200,6 +200,7 @@ enum cpuhp_state {
> > >
> > >  	/* Online section invoked on the hotplugged CPU from the hotplug
> thread */
> > >  	CPUHP_AP_ONLINE_IDLE,
> > > +	CPUHP_AP_HYPERV_ONLINE,
> >
> > x86 maintainers, are you okay with this?
> 
> Boris -- Are you OK with this, and could give an ACK?  This small patch
> set fixes a problem introduced into 6.4-rc1 by other Confidential VM
> changes, so this fix needs to be incorporated before 6.4 is released.
> 
> Michael

Hi Boris, gentle ping -- I hope this patch can be accepted soon as I
and Tianyu need to rebase our SNP/TDX patches on this patch.

> > >  	CPUHP_AP_KVM_ONLINE,
> > >  	CPUHP_AP_SCHED_WAIT_EMPTY,
> > >  	CPUHP_AP_SMPBOOT_THREADS,
> > > --
> > > 1.8.3.1
> > >