Re: [Xen-devel] [PATCH v3 0/4] x86: accommodate 32-bit PV guests with SMEP/SMAP handling

2016-06-21 Thread Jan Beulich
>>> On 21.06.16 at 08:19, wrote: >> From: Jan Beulich [mailto:jbeul...@suse.com] >> Sent: Thursday, March 17, 2016 3:51 PM >> >> As has been explained previously[1], SMAP (and with less relevance >> also SMEP) is not compatible with 32-bit PV guests which aren't >>

Re: [Xen-devel] [PATCH v3 0/4] x86: accommodate 32-bit PV guests with SMEP/SMAP handling

2016-06-21 Thread Wu, Feng
> -Original Message- > From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: Thursday, March 17, 2016 3:51 PM > To: xen-devel > Cc: Andrew Cooper ; Wu, Feng > ; Keir Fraser > Subject: [PATCH v3

Re: [Xen-devel] [PATCH v3 0/4] x86: accommodate 32-bit PV guests with SMEP/SMAP handling

2016-05-13 Thread Andrew Cooper
On 13/05/16 18:02, Wei Liu wrote: > On Thu, Mar 17, 2016 at 01:50:39AM -0600, Jan Beulich wrote: >> As has been explained previously[1], SMAP (and with less relevance >> also SMEP) is not compatible with 32-bit PV guests which aren't >> aware/prepared to be run with that feature enabled. Andrew's

Re: [Xen-devel] [PATCH v3 0/4] x86: accommodate 32-bit PV guests with SMEP/SMAP handling

2016-05-13 Thread Wei Liu
On Thu, Mar 17, 2016 at 01:50:39AM -0600, Jan Beulich wrote: > As has been explained previously[1], SMAP (and with less relevance > also SMEP) is not compatible with 32-bit PV guests which aren't > aware/prepared to be run with that feature enabled. Andrew's > original approach either sacrificed

[Xen-devel] [PATCH v3 0/4] x86: accommodate 32-bit PV guests with SMEP/SMAP handling

2016-03-19 Thread Jan Beulich
As has been explained previously[1], SMAP (and with less relevance also SMEP) is not compatible with 32-bit PV guests which aren't aware/prepared to be run with that feature enabled. Andrew's original approach either sacrificed architectural correctness for making 32-bit guests work again, or