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Date:      Tue, 6 Sep 2022 20:18:33 +0300
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        =?utf-8?Q?T=C4=B3l?= Coosemans <tijl@freebsd.org>
Cc:        Colin Percival <cperciva@tarsnap.com>, src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-branches@freebsd.org
Subject:   Re: git: 5d45f99a1ed8 - stable/13 - i386 doreti: Fix calculation of stack frame size
Message-ID:  <YxeA6Y4lD/5DXfcJ@kib.kiev.ua>
In-Reply-To: <20220906172225.1a4d1064@FreeBSD.org>
References:  <202209021506.282F6Jhx029847@gitrepo.freebsd.org> <01000182feec990a-943b1465-055b-4cb8-984c-225a4feabf7d-000000@email.amazonses.com> <20220906172225.1a4d1064@FreeBSD.org>

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On Tue, Sep 06, 2022 at 05:22:25PM +0200, Tijl Coosemans wrote:
> On Fri, 2 Sep 2022 15:58:14 +0000 Colin Percival <cperciva@tarsnap.com>
> wrote:
> > On 9/2/22 08:06, Tijl Coosemans wrote:
> >> The branch stable/13 has been updated by tijl:
> >> 
> >> URL: https://cgit.FreeBSD.org/src/commit/?id=5d45f99a1ed861618d5c4d5b4252d5eba001ad35
> >> 
> >> commit 5d45f99a1ed861618d5c4d5b4252d5eba001ad35
> >> Author:     Tijl Coosemans <tijl@FreeBSD.org>
> >> AuthorDate: 2022-09-02 14:16:35 +0000
> >> Commit:     Tijl Coosemans <tijl@FreeBSD.org>
> >> CommitDate: 2022-09-02 15:02:00 +0000
> >> 
> >>      i386 doreti: Fix calculation of stack frame size
> >>      
> >>      Reviewed by:    kib
> >>      Fixes:          e8b2980e4a12 - i386 doreti: stop saving/restoring %ecx
> >>      
> >>      (cherry picked from commit cfdc649e455bc0d37d42c46b59360462e93b4300)  
> > I assume this MFC took place 23 minutes after the original commit because it
> > was an urgent fix; to avoid the need for assumptions, please indicate the
> > reason for an accelerated MFC in the commit message when you skip the normal
> > 3 day waiting period.
> 
> Will do.  In this case it was a trivial fixup in a critical path.  At the
> time I also thought it fixed a panic I was seeing but this turned out to
> be caused by another commit.

It is not on critical path, at worst it affected vm86 mode only.
That said, 'the other bug' was there before the series.



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