linux-kernel - Re: [PATCH] x86/xen: Calculate __max_logical

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Message-ID: <9a7c4dae-4758-5aca-b3af-2129b62719e2@invisiblethingslab.com>
Date:   Tue, 27 Feb 2018 17:08:00 +0000
From:   Simon Gaiser <simon@...isiblethingslab.com>
To:     stable@...r.kernel.org
Cc:     Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Prarit Bhargava <prarit@...hat.com>,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Juergen Gross <jgross@...e.com>,
        Dou Liyang <douly.fnst@...fujitsu.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Lutomirski <luto@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        xen-devel@...ts.xenproject.org
Subject: Re: [PATCH] x86/xen: Calculate __max_logical_packages on PV domains

Boris Ostrovsky:
> On 02/07/2018 06:49 PM, Prarit Bhargava wrote:
>> The kernel panics on PV domains because native_smp_cpus_done() is
>> only called for HVM domains.
>>
>> Calculate __max_logical_packages for PV domains.
>>
>> Fixes: b4c0a7326f5d ("x86/smpboot: Fix __max_logical_packages estimate")
>> Signed-off-by: Prarit Bhargava <prarit@...hat.com>
>> Tested-and-reported-by: Simon Gaiser <simon@...isiblethingslab.com>
>> Cc: Thomas Gleixner <tglx@...utronix.de>
>> Cc: Ingo Molnar <mingo@...hat.com>
>> Cc: "H. Peter Anvin" <hpa@...or.com>
>> Cc: x86@...nel.org
>> Cc: Boris Ostrovsky <boris.ostrovsky@...cle.com>
>> Cc: Juergen Gross <jgross@...e.com>
>> Cc: Dou Liyang <douly.fnst@...fujitsu.com>
>> Cc: Prarit Bhargava <prarit@...hat.com>
>> Cc: Kate Stewart <kstewart@...uxfoundation.org>
>> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>> Cc: Andy Lutomirski <luto@...nel.org>
>> Cc: Andi Kleen <ak@...ux.intel.com>
>> Cc: Vitaly Kuznetsov <vkuznets@...hat.com>
>> Cc: xen-devel@...ts.xenproject.org
> 
> 
> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

The fixed bug is in 4.15 so it should get into stable. It's
63e708f826bb21470155d37b103a75d8a9e25b18 upstream.



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