From: Thomas Gleixner <tglx@linutronix.de>
To: speck@linutronix.de
Subject: Re: [PATCH v5 14/27] MDSv5 3
Date: Mon, 28 Jan 2019 09:33:47 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.21.1901280929500.1622@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20190128034245.GL6118@tassilo.jf.intel.com>
On Sun, 27 Jan 2019, speck for Andi Kleen wrote:
> > > +Most interrupt handlers for modern devices should not touch
> > > +user data, because they rely on DMA and only manipulate
> > > +pointers. This needs auditing to confirm though.
> >
> > Oh well. It's not really hard to write up analysis scripts to filter out
> > which interrupt handlers are merily doing trivial stuff like
> > napi_schedule(), schedule_work() etc.
>
> You keep saying that, but it's not what I see.
I did not say that scripting can do everything, but it can exclude a fair
portion and you can exclude a large portion of handlers simply because they
are never ever used on x86. The rest is of course manual inspection.
> I've been going through interrupt handlers the last few days,
> and I haven't done most of them yet, and I find it certainly
> not easy because most of them are doing non trivial stuff,
> and in many cases even use significant indirection and you have to go
> through many files to find all the code and double check it.
>
> But if your magic scripts can all do it then please just
> send a list. This will save a lot of work for me.
I've done similar analysis before and no, I'm not writing the scripts this
time. I wasted enough time mopping up Intel induced mess in the past 2
years.
Thanks,
tglx
next prev parent reply other threads:[~2019-01-28 8:33 UTC|newest]
Thread overview: 105+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-19 0:50 [MODERATED] [PATCH v5 00/27] MDSv5 19 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 01/27] MDSv5 26 Andi Kleen
2019-01-22 4:17 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 12:46 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 02/27] MDSv5 14 Andi Kleen
2019-01-22 4:20 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 12:51 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 03/27] MDSv5 16 Andi Kleen
2019-01-22 4:23 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 12:55 ` Thomas Gleixner
2019-01-27 21:58 ` Thomas Gleixner
2019-01-28 3:30 ` [MODERATED] " Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 04/27] MDSv5 15 Andi Kleen
2019-01-22 4:33 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 12:59 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 05/27] MDSv5 21 Andi Kleen
2019-01-22 4:35 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 13:01 ` Thomas Gleixner
2019-02-21 12:06 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 06/27] MDSv5 18 Andi Kleen
2019-01-21 22:41 ` [MODERATED] " Josh Poimboeuf
2019-01-22 1:16 ` Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 07/27] MDSv5 0 Andi Kleen
2019-01-22 4:39 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-27 22:09 ` Thomas Gleixner
2019-01-28 3:33 ` [MODERATED] " Andi Kleen
2019-01-28 8:29 ` Thomas Gleixner
2019-02-13 22:26 ` [MODERATED] " Tyler Hicks
2019-01-19 0:50 ` [MODERATED] [PATCH v5 08/27] MDSv5 13 Andi Kleen
2019-01-22 4:40 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 09/27] MDSv5 23 Andi Kleen
2019-01-22 4:56 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 7:26 ` Greg KH
2019-01-22 13:07 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 10/27] MDSv5 7 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 11/27] MDSv5 2 Andi Kleen
2019-01-22 13:11 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 12/27] MDSv5 6 Andi Kleen
2019-01-22 14:01 ` Thomas Gleixner
2019-01-22 15:42 ` Thomas Gleixner
2019-01-22 18:01 ` [MODERATED] " Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 13/27] MDSv5 17 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 14/27] MDSv5 3 Andi Kleen
2019-01-22 4:48 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 15:58 ` Thomas Gleixner
2019-01-22 17:57 ` Thomas Gleixner
2019-01-23 1:35 ` [MODERATED] " Andi Kleen
2019-01-23 9:27 ` Thomas Gleixner
2019-01-23 16:02 ` [MODERATED] " Andi Kleen
2019-01-23 22:40 ` Josh Poimboeuf
2019-01-23 22:57 ` Josh Poimboeuf
2019-01-24 0:25 ` Josh Poimboeuf
2019-01-24 2:26 ` Andi Kleen
2019-01-24 12:04 ` Thomas Gleixner
2019-01-28 3:42 ` [MODERATED] " Andi Kleen
2019-01-28 8:33 ` Thomas Gleixner [this message]
2019-02-16 2:00 ` Andi Kleen
2019-02-16 10:32 ` Thomas Gleixner
2019-02-16 16:58 ` [MODERATED] " Andi Kleen
2019-02-16 17:12 ` Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 15/27] MDSv5 1 Andi Kleen
2019-01-22 4:48 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 16/27] MDSv5 10 Andi Kleen
2019-01-22 4:54 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-22 7:33 ` Greg KH
2019-01-19 0:50 ` [MODERATED] [PATCH v5 17/27] MDSv5 9 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 18/27] MDSv5 8 Andi Kleen
2019-01-22 5:07 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 19/27] MDSv5 12 Andi Kleen
2019-01-22 5:09 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 20/27] MDSv5 27 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 21/27] MDSv5 20 Andi Kleen
2019-01-22 5:11 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 22/27] MDSv5 24 Andi Kleen
2019-01-21 21:24 ` [MODERATED] " Linus Torvalds
2019-01-22 1:22 ` Andi Kleen
2019-01-22 16:09 ` Thomas Gleixner
2019-01-22 17:56 ` [MODERATED] " Andi Kleen
2019-01-22 18:56 ` Thomas Gleixner
2019-01-23 1:39 ` [MODERATED] " Andi Kleen
2019-01-23 6:39 ` Greg KH
2019-01-24 9:55 ` Thomas Gleixner
2019-01-19 0:50 ` [MODERATED] [PATCH v5 23/27] MDSv5 22 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 24/27] MDSv5 5 Andi Kleen
2019-01-21 21:20 ` [MODERATED] " Linus Torvalds
2019-01-19 0:50 ` [MODERATED] [PATCH v5 25/27] MDSv5 4 Andi Kleen
2019-01-22 5:15 ` [MODERATED] " Konrad Rzeszutek Wilk
2019-01-19 0:50 ` [MODERATED] [PATCH v5 26/27] MDSv5 11 Andi Kleen
2019-01-19 0:50 ` [MODERATED] [PATCH v5 27/27] MDSv5 25 Andi Kleen
2019-01-21 21:18 ` [MODERATED] Re: [PATCH v5 00/27] MDSv5 19 Linus Torvalds
2019-01-22 1:14 ` Andi Kleen
2019-01-22 7:38 ` Greg KH
2019-01-28 11:34 ` Thomas Gleixner
2019-02-13 22:33 ` [MODERATED] " Tyler Hicks
2019-02-14 13:09 ` Jiri Kosina
2019-02-14 13:51 ` Greg KH
2019-02-14 16:53 ` Andi Kleen
2019-02-14 18:00 ` Greg KH
2019-02-14 18:05 ` Andrew Cooper
2019-02-14 18:33 ` Andi Kleen
2019-02-14 18:52 ` Greg KH
2019-02-14 19:50 ` Andi Kleen
2019-02-15 7:06 ` Greg KH
2019-02-15 13:06 ` Andi Kleen
2019-02-19 12:12 ` Greg KH
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