linux-kernel - RE: [PATCH v2 2/2] arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to fix CPU online sequencing

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Message-ID: <SA1PR21MB1335ABC2EACA80D2045ADAD1BF40A@SA1PR21MB1335.namprd21.prod.outlook.com>
Date:   Tue, 23 May 2023 18:30:54 +0000
From:   Dexuan Cui <decui@...rosoft.com>
To:     "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will@...nel.org" <will@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>,
        "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>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "x86@...nel.org" <x86@...nel.org>
Subject: RE: [PATCH v2 2/2] arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to
 fix CPU online sequencing

> From: Michael Kelley (LINUX) <mikelley@...rosoft.com>
> Sent: Tuesday, May 23, 2023 10:14 AM
> To: KY Srinivasan <kys@...rosoft.com>; Haiyang Zhang
> <haiyangz@...rosoft.com>; wei.liu@...nel.org; Dexuan Cui
> <decui@...rosoft.com>; catalin.marinas@....com; will@...nel.org;
> tglx@...utronix.de; mingo@...hat.com; bp@...en8.de;
> dave.hansen@...ux.intel.com; hpa@...or.com; linux-kernel@...r.kernel.org;
> linux-hyperv@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> x86@...nel.org
> Cc: Michael Kelley (LINUX) <mikelley@...rosoft.com>
> Subject: [PATCH v2 2/2] arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE
> state to fix CPU online sequencing
> 
> State CPUHP_AP_HYPERV_ONLINE has been introduced to correctly sequence
> the
> initialization of hyperv_pcpu_input_arg. Use this new state for Hyper-V
> initialization so that hyperv_pcpu_input_arg is allocated early enough.
> 
> Signed-off-by: Michael Kelley <mikelley@...rosoft.com>
> ---
> 
> Changes in v2:
> * Fixed typo in commit message [Dexuan Cui]

Reviewed-by: Dexuan Cui <decui@...rosoft.com>