...to allow the calling domain to prevent translation of specified l1e
value.
Despite what the comment in public/xen.h might imply, specifying a
command value of MMU_NORMAL_PT_UPDATE will not simply update an l1e with
the specified value. Instead, mod_l1_entry() tests whether foreign_dom
has PG_tr
>>> On 28.11.17 at 16:08, wrote:
> @@ -1905,7 +1906,8 @@ static int mod_l1_entry(l1_pgentry_t *pl1e,
> l1_pgentry_t nl1e,
> }
>
> /* Translate foreign guest address. */
> -if ( paging_mode_translate(pg_dom) )
> +if ( cmd != MMU_PT_UPDATE_NO_TRANSLATE &&
> +
On 12/12/17 13:25, Jan Beulich wrote:
On 28.11.17 at 16:08, wrote:
>> @@ -1905,7 +1906,8 @@ static int mod_l1_entry(l1_pgentry_t *pl1e,
>> l1_pgentry_t nl1e,
>> }
>>
>> /* Translate foreign guest address. */
>> -if ( paging_mode_translate(pg_dom) )
>> +if
>>> On 12.12.17 at 14:52, wrote:
> On 12/12/17 13:25, Jan Beulich wrote:
> On 28.11.17 at 16:08, wrote:
>>> @@ -1905,7 +1906,8 @@ static int mod_l1_entry(l1_pgentry_t *pl1e,
> l1_pgentry_t nl1e,
>>> }
>>>
>>> /* Translate foreign guest address. */
>>> -if ( paging
> -Original Message-
> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: 12 December 2017 13:25
> To: Paul Durrant
> Cc: Andrew Cooper ; Wei Liu
> ; George Dunlap ; Ian
> Jackson ; Stefano Stabellini
> ; xen-devel@lists.xenproject.org; Tim (Xen.org)
>
> Subject: Re: [PATCH v14 07/11] x
-Original Message-
> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: 12 December 2017 14:39
> To: Andrew Cooper
> Cc: Paul Durrant ; Wei Liu ;
> George Dunlap ; Ian Jackson
> ; Stefano Stabellini ; xen-
> de...@lists.xenproject.org; Tim (Xen.org)
> Subject: Re: [PATCH v14 07/11] x86
>>> On 13.12.17 at 13:06, wrote:
>> From: Jan Beulich [mailto:jbeul...@suse.com]
>> Sent: 12 December 2017 14:39
>> >>> On 12.12.17 at 14:52, wrote:
>> > We are deliberately trying to introducing a mechanism whereby a
>> > toolstack/device-mode/other semi-privileged entity can map resources
>> >
> -Original Message-
> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: 13 December 2017 14:36
> To: Paul Durrant
> Cc: Andrew Cooper ; George Dunlap
> ; Ian Jackson ; Wei Liu
> ; Stefano Stabellini ; xen-
> de...@lists.xenproject.org; Tim (Xen.org)
> Subject: RE: [PATCH v14 07/11] x8
>>> On 13.12.17 at 15:49, wrote:
>> From: Jan Beulich [mailto:jbeul...@suse.com]
>> Sent: 13 December 2017 14:36
>> >>> On 13.12.17 at 13:06, wrote:
>> >> From: Jan Beulich [mailto:jbeul...@suse.com]
>> >> Sent: 12 December 2017 14:39
>> >> >>> On 12.12.17 at 14:52, wrote:
>> >> > We are delibe
> -Original Message-
> From: Jan Beulich [mailto:jbeul...@suse.com]
> Sent: 13 December 2017 15:25
> To: Paul Durrant
> Cc: Andrew Cooper ; George Dunlap
> ; Ian Jackson ; Wei Liu
> ; Stefano Stabellini ; xen-
> de...@lists.xenproject.org; Tim (Xen.org)
> Subject: RE: [PATCH v14 07/11] x8
>>> On 13.12.17 at 18:03, wrote:
> Looking through the code, the only one thing that bothers me is the
> page_set_owner() done in shadow_enable() for the page used for HVM guest
> vcpus that have paging disabled. AFAICT that page would become mappable by an
> emulating domain with MMU_PT_UPDATE
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