From: Andrew Cooper <andrew.cooper3@citrix.com>
To: "Wang, Yong Y" <yong.y.wang@intel.com>, "Wu, Feng" <feng.wu@intel.com>
Cc: "Jan Beulich (JBeulich@suse.com)" <JBeulich@suse.com>,
"Nakajima, Jun" <jun.nakajima@intel.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: SMAP/SMEP issues with 32-bit pv guests
Date: Mon, 1 Aug 2016 13:30:31 +0100 [thread overview]
Message-ID: <a7197c8d-12b8-bb02-0c77-928b72259466@citrix.com> (raw)
In-Reply-To: <F7A23A970ACCEB4292D160AAEF9D20130336585E@shsmsx102.ccr.corp.intel.com>
On 01/08/16 13:24, Wang, Yong Y wrote:
>> -----Original Message-----
>> From: Andrew Cooper [mailto:andrew.cooper3@citrix.com]
>> Sent: Monday, August 1, 2016 6:16 PM
>> To: Wu, Feng <feng.wu@intel.com>
>> Cc: Nakajima, Jun <jun.nakajima@intel.com>; Wang, Yong Y
>> <yong.y.wang@intel.com>; Jan Beulich (JBeulich@suse.com)
>> <JBeulich@suse.com>; xen-devel@lists.xen.org
>> Subject: Re: SMAP/SMEP issues with 32-bit pv guests
>>
>> On 28/06/16 02:58, Wu, Feng wrote:
>>> Hi Andy,
>>>
>>> As you know, SMAP/SMEP may affect the 32-bit pv guests, after discussed
>> internally, our current idea is that we can just disable this two feature for Xen
>> hypervisor itself, hence only enable it for HVM guests. Do you think this is
>> acceptable from your perspective?
>>
>> So you are suggesting that Xen detects SMEP/SMAP, doesn't turn it on for
>> itself, but does allow HVM guests to use it?
>>
> Yes, that is correct.
>
>> I suppose that is a slight improvement over the current situation.
>>
> Do you mind being a bit more clear on this? Is this something you want to see or do you want something else?
It is an improvement, so go ahead.
~Andrew
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-08-01 12:30 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-28 1:58 SMAP/SMEP issues with 32-bit pv guests Wu, Feng
2016-06-28 7:41 ` Jan Beulich
2016-08-01 0:48 ` Wu, Feng
2016-08-01 8:16 ` Jan Beulich
2016-08-01 8:25 ` Wu, Feng
2016-08-01 10:16 ` Andrew Cooper
2016-08-01 12:24 ` Wang, Yong Y
2016-08-01 12:30 ` Andrew Cooper [this message]
2016-08-01 12:48 ` Wu, Feng
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a7197c8d-12b8-bb02-0c77-928b72259466@citrix.com \
--to=andrew.cooper3@citrix.com \
--cc=JBeulich@suse.com \
--cc=feng.wu@intel.com \
--cc=jun.nakajima@intel.com \
--cc=xen-devel@lists.xen.org \
--cc=yong.y.wang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).