From: Andi Kleen <ak@linux.intel.com>
To: speck@linutronix.de
Subject: [MODERATED] Re: [PATCH v6 39/43] MDSv6
Date: Mon, 25 Feb 2019 08:28:25 -0800 [thread overview]
Message-ID: <20190225162825.GR16922@tassilo.jf.intel.com> (raw)
In-Reply-To: <20190225152654.GB19947@kroah.com>
> > Instead of marking all the USB interrupts and timers as clear cpu
> > only clear it when the user data touching actually happens.
>
> Um, almost all irqs here _do_ receive data across the wire, and your
> patch shows this happening. The text here is all wrong.
Just to be clear touching here it means "access with the CPU"
especially copying. Just manipulating data addresses is fine.
> Also, why are you classifying USB data as "user data"? It's coming from
> some random piece of hardware. I don't see a definition of what you are
> calling "user data" anywhere in this patchset, did I miss that
> somewhere?
user data includes IO data (but not metadata)
USB could be key presses (e.g. your password) or mouse movements or block IO data
These are all considered sensitive.
-Andi
next prev parent reply other threads:[~2019-02-25 16:28 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-24 15:07 [MODERATED] [PATCH v6 00/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 01/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 02/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 03/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 04/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 05/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 06/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 07/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 08/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 09/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 10/43] MDSv6 Andi Kleen
2019-02-25 16:11 ` [MODERATED] " Greg KH
2019-02-25 16:42 ` Andi Kleen
2019-02-25 16:30 ` Greg KH
2019-02-25 16:41 ` [MODERATED] Encrypted Message Jon Masters
2019-02-25 16:58 ` [MODERATED] Re: [PATCH v6 10/43] MDSv6 Andi Kleen
2019-02-25 17:18 ` Dave Hansen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 11/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 12/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 13/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 14/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 15/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 16/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 17/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 18/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 19/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 20/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 21/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 22/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 23/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 24/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 25/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 26/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 27/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 28/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 29/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 30/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 31/43] MDSv6 Andi Kleen
2019-02-25 15:19 ` [MODERATED] " Greg KH
2019-02-25 15:34 ` Andi Kleen
2019-02-25 15:49 ` Greg KH
2019-02-25 15:52 ` [MODERATED] Encrypted Message Jon Masters
2019-02-25 16:00 ` [MODERATED] " Greg KH
2019-02-25 16:19 ` [MODERATED] " Jon Masters
2019-02-25 16:19 ` [MODERATED] Re: [PATCH v6 31/43] MDSv6 Andi Kleen
2019-02-25 16:24 ` mark gross
2019-02-25 16:24 ` Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 32/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 33/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 34/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 35/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [FROZEN] [PATCH v6 36/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 37/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 38/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 39/43] MDSv6 Andi Kleen
2019-02-25 15:26 ` [MODERATED] " Greg KH
2019-02-25 16:28 ` Andi Kleen [this message]
2019-02-25 16:47 ` Greg KH
2019-02-25 17:05 ` Andi Kleen
2019-02-25 17:49 ` Greg KH
2019-02-25 18:10 ` Andi Kleen
2019-02-25 20:11 ` Greg KH
2019-02-25 21:00 ` Greg KH
2019-02-25 21:19 ` Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 40/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 41/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 42/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 43/43] MDSv6 Andi Kleen
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