From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
xen-devel <xen-devel@lists.xenproject.org>
Cc: Keir Fraser <keir@xen.org>
Subject: Re: [PATCH v2 4/4] x86: switch default mapping attributes to non-executable
Date: Thu, 21 May 2015 12:14:03 +0100 [thread overview]
Message-ID: <555DBDFB.1070800@citrix.com> (raw)
In-Reply-To: <555DCCE5020000780007CAAA@mail.emea.novell.com>
On 21/05/15 11:17, Jan Beulich wrote:
> Only a very limited subset of mappings need to be done as executable
> ones; in particular the direct mapping should not be executable to
> limit the damage attackers can cause by exploiting security relevant
> bugs.
>
> The EFI change at once includes an adjustment to set NX only when
> supported by the hardware.
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
prev parent reply other threads:[~2015-05-21 11:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-21 10:07 [PATCH v2 0/4] x86: don't default to executable mappings Jan Beulich
2015-05-21 10:15 ` [PATCH v2 1/4] x86: move syscall trampolines off the stack Jan Beulich
2015-05-21 11:08 ` Andrew Cooper
2015-05-21 11:48 ` Jan Beulich
2015-05-21 11:50 ` Andrew Cooper
2015-05-22 8:25 ` Jan Beulich
2015-05-22 8:34 ` Jan Beulich
2015-05-22 8:35 ` Andrew Cooper
2015-05-21 10:16 ` [PATCH v2 2/4] x86emul: move stubs " Jan Beulich
2015-05-21 11:10 ` Andrew Cooper
2015-05-21 10:17 ` [PATCH v2 3/4] x86: move I/O emulation " Jan Beulich
2015-05-21 11:12 ` Andrew Cooper
2015-05-21 10:17 ` [PATCH v2 4/4] x86: switch default mapping attributes to non-executable Jan Beulich
2015-05-21 11:14 ` Andrew Cooper [this message]
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