linux-kernel - Re: [PATCH] x86/mm: fix cpu stuck issue in __change_page_attr_set

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Date:   Thu, 5 Jul 2018 08:15:52 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Yang, Bin" <bin.yang@...el.com>
cc:     "mingo@...nel.org" <mingo@...nel.org>,
        "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH] x86/mm: fix cpu stuck issue in
 __change_page_attr_set_clr

On Thu, 5 Jul 2018, Yang, Bin wrote:

> Sorry for the misunderstanding. I mean I will improve the check loop in patch v2. 
> I just submitted patch v2. Thanks in advance for your kind review.

Did you actually read what I wrote?

> On Thu, 5 Jul 2018, Yang, Bin wrote:
> 
> Please do not top post.

Here again: Please do not top post.

and further down:

> and that can be done smart without massive looping in 4K steps, but we
> really want to analyze _first_ whether the checks are just silently fixing
> up sloppy callers and whether they are needed at all.

I can't see any analysis of that in your V2.

Thanks,

	tglx