linux-kernel - Re: [PATCHv3 1/5] x86/boot/compressed/64: Detect and handle 5-level paging at boot-time

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Date:   Tue, 5 Dec 2017 00:15:17 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andy Lutomirski <luto@...capital.net>,
        Cyrill Gorcunov <gorcunov@...nvz.org>,
        Borislav Petkov <bp@...e.de>, Andi Kleen <ak@...ux.intel.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCHv3 1/5] x86/boot/compressed/64: Detect and handle 5-level
 paging at boot-time

On Mon, Dec 04, 2017 at 09:29:45PM +0100, Thomas Gleixner wrote:
> On Mon, 4 Dec 2017, Kirill A. Shutemov wrote:
> 
> > This patch prepare decompression code to boot-time switching between 4-
> > and 5-level paging.
> 
> This is the very wrong reason for tagging this commit stable.
> 
> > 
> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> > Cc: <stable@...r.kernel.org>	[4.14+]
> 
> Adding cc stable  requires a Fixes tag as well.
> 
> > +int l5_paging_required(void)
> > +{
> > +	/* Check i leaf 7 is supported. */
> 
> So you introduce the typo here and then you fix it in the next patch which
> is the actual bug fix as an completely unrelated hunk.
> 
> -- a/arch/x86/boot/compressed/pgtable_64.c
> +++ b/arch/x86/boot/compressed/pgtable_64.c
> @@ -2,7 +2,7 @@
>  
>  int l5_paging_required(void)
>  {
> -       /* Check i leaf 7 is supported. */
> +       /* Check if leaf 7 is supported. */
> 
> That's just careless and sloppy.
> 
> I fixed it up once more along with the lousy changelogs because this crap,
> which you not even thought about addressing it when shoving your 5-level
> support into 4.14 needs to be fixed.
> 
> I'm really tired of your sloppiness. You waste everyones time just by
> ignoring feedback and continuing to do what you think is enough. Works for
> me is _NOT_ enough for kernel development.

Sorry. I screwed it up.

I'll do my best to not waste your time again.

> I'm not even looking at the rest of the series unless someone else has the
> stomach to do so and sends a Reviewed-by.
> 
> Alternatively you can sit down and look at the changelogs and the code and
> figure out whether it matches what I told you over and over. Once you think
> it does, then please feel free to resend it, but be sure that I'm going to
> apply the most restrictive crap filter on anything which comes from you
> from now on.

Fair enough. I'll recheck everything in the morning and send them again.

Thanks,
  and sorry again for wasting your time.

-- 
 Kirill A. Shutemov