linux-kernel - RE: backport Rewrite sync_core() to use IRET-to-self to stable kernels?

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Message-ID: <027FCDD209E4CC4181A7B9D5DBB880575FDD9DEC@SHSMSX104.ccr.corp.intel.com>
Date:   Wed, 24 Jan 2018 08:19:44 +0000
From:   "Zhang, Ning A" <ning.a.zhang@...el.com>
To:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        Andy Lutomirski <luto@...nel.org>
CC:     "tglx@...utronix.de" <tglx@...utronix.de>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: backport Rewrite sync_core() to use IRET-to-self to stable
 kernels?

Thanks Greg, Andy

How about c198b121b1a1d7a7171770c634cd49191bac4477?
Will both patches go to stable kernel?

BR.
Ning.

-----Original Message-----
From: gregkh@...uxfoundation.org [mailto:gregkh@...uxfoundation.org] 
Sent: Tuesday, January 23, 2018 3:26 PM
To: Andy Lutomirski <luto@...nel.org>
Cc: Zhang, Ning A <ning.a.zhang@...el.com>; tglx@...utronix.de; stable@...r.kernel.org; linux-kernel@...r.kernel.org
Subject: Re: backport Rewrite sync_core() to use IRET-to-self to stable kernels?

On Mon, Jan 22, 2018 at 07:06:29PM -0800, Andy Lutomirski wrote:
> On Mon, Jan 22, 2018 at 6:59 PM, Zhang, Ning A <ning.a.zhang@...el.com> wrote:
> > hello, Greg, Andy, Thomas
> >
> > would you like to backport these two patches to LTS kernel?
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.
> > git/commit/arch/x86/include/asm/processor.h?h=v4.14.14&id=1c52d859cb
> > 2d417e7216d3e56bb7fea88444cec9
> >
> > x86/asm/32: Make sync_core() handle missing CPUID on all 32-bit 
> > kernels
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.
> > git/commit/arch/x86/include/asm/processor.h?h=v4.14.14&id=c198b121b1
> > a1d7a7171770c634cd49191bac4477
> >
> > x86/asm: Rewrite sync_core() to use IRET-to-self
> >
> 
> I'd be in favor of backporting
> 1c52d859cb2d417e7216d3e56bb7fea88444cec9.  I see no compelling reason 
> to backport the other one, since it doesn't fix a bug.  Greg, can you 
> do this?

I'll work on this after this round of stable kernels are released.

thanks,

greg k-h