From: Dave Hansen <dave.hansen@intel.com>
To: Florian Weimer <fweimer@redhat.com>, Ram Pai <linuxram@us.ibm.com>
Cc: linux-mm@kvack.org, linux-api@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: pkeys: Reserve PKEY_DISABLE_READ
Date: Tue, 27 Nov 2018 07:31:38 -0800 [thread overview]
Message-ID: <58e263a6-9a93-46d6-c5f9-59973064d55e@intel.com> (raw)
In-Reply-To: <87zhtuhgx0.fsf@oldenburg.str.redhat.com>
On 11/27/18 3:57 AM, Florian Weimer wrote:
> I would have expected something that translates PKEY_DISABLE_WRITE |
> PKEY_DISABLE_READ into PKEY_DISABLE_ACCESS, and also accepts
> PKEY_DISABLE_ACCESS | PKEY_DISABLE_READ, for consistency with POWER.
>
> (My understanding is that PKEY_DISABLE_ACCESS does not disable all
> access, but produces execute-only memory.)
Correct, it disables all data access, but not execution.
next prev parent reply other threads:[~2018-11-27 15:31 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-08 12:05 Florian Weimer
2018-11-08 14:57 ` Dave Hansen
2018-11-08 15:01 ` Florian Weimer
2018-11-08 17:14 ` Dave Hansen
2018-11-08 17:37 ` Florian Weimer
2018-11-08 20:12 ` Ram Pai
2018-11-08 20:23 ` Florian Weimer
2018-11-09 18:09 ` Ram Pai
2018-11-12 12:00 ` Florian Weimer
2018-11-27 10:23 ` Ram Pai
2018-11-27 11:57 ` Florian Weimer
2018-11-27 15:31 ` Dave Hansen [this message]
2018-11-29 11:37 ` Florian Weimer
2018-12-03 4:02 ` Ram Pai
2018-12-03 15:52 ` Florian Weimer
2018-12-04 6:23 ` Ram Pai
2018-12-05 13:00 ` Florian Weimer
2018-12-05 20:23 ` Ram Pai
2018-12-05 16:21 ` Andy Lutomirski
2018-12-05 20:36 ` Ram Pai
2018-11-08 20:08 ` Ram Pai
2018-11-08 20:11 ` Dave Hansen
2018-11-08 20:14 ` Florian Weimer
2018-11-08 19:22 ` Ram Pai
2018-11-12 10:29 ` Florian Weimer
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