On 02.09.2019 13:23, Alexandru Stefan ISAILA wrote:
> On 29.08.2019 18:04, Jan Beulich wrote:
>> On 22.08.2019 16:02, Alexandru Stefan ISAILA wrote:
>>> This patch adds access control for NPT mode.
>>>
>>> The access rights are stored in the NPT p2m table 56:53.
>>
>> Why starting from bit 53? I
On 29.08.2019 18:04, Jan Beulich wrote:
> On 22.08.2019 16:02, Alexandru Stefan ISAILA wrote:
>> This patch adds access control for NPT mode.
>>
>> The access rights are stored in the NPT p2m table 56:53.
>
> Why starting from bit 53? I can't seem to find any use of bit 52.
There is a comment
On 22.08.2019 16:02, Alexandru Stefan ISAILA wrote:
> This patch adds access control for NPT mode.
>
> The access rights are stored in the NPT p2m table 56:53.
Why starting from bit 53? I can't seem to find any use of bit 52.
> The bits are free after clearing the IOMMU flags [1].
>
> Modify
This patch adds access control for NPT mode.
The access rights are stored in the NPT p2m table 56:53.
The bits are free after clearing the IOMMU flags [1].
Modify p2m_type_to_flags() to accept and interpret an access value,
parallel to the ept code.
Add a set_default_access() method to the
>>> On 02.07.18 at 10:01, wrote:
> On Lu, 2018-07-02 at 00:37 -0600, Jan Beulich wrote:
>> >
>> > >
>> > > >
>> > > > On 29.06.18 at 18:42, wrote:
>> > On Fri, Jun 29, 2018 at 3:38 AM Jan Beulich
>> > wrote:
>> > >
>> > >
>> > > >
>> > > > >
>> > > > > >
>> > > > > > On 29.06.18 at 10:42,
On Lu, 2018-07-02 at 00:37 -0600, Jan Beulich wrote:
> >
> > >
> > > >
> > > > On 29.06.18 at 18:42, wrote:
> > On Fri, Jun 29, 2018 at 3:38 AM Jan Beulich
> > wrote:
> > >
> > >
> > > >
> > > > >
> > > > > >
> > > > > > On 29.06.18 at 10:42, wrote:
> > > > I've started a win 7 machine with no
On Fri, Jun 29, 2018 at 3:38 AM Jan Beulich wrote:
>
> >>> On 29.06.18 at 10:42, wrote:
> > I've started a win 7 machine with no introspection or xen-access. After
> > 30 min of uptime there were 0 inserts into the tree. I guess the
> > overhead is down to a minimum with no user modified access
>>> On 29.06.18 at 10:42, wrote:
> I've started a win 7 machine with no introspection or xen-access. After
> 30 min of uptime there were 0 inserts into the tree. I guess the
> overhead is down to a minimum with no user modified access rights.
Thanks, this is helpful to know. In that case though,
On Vi, 2018-06-29 at 00:13 -0600, Jan Beulich wrote:
> >
> > >
> > > >
> > > > Alexandru Stefan ISAILA 06/28/18 4:53
> > > > PM >>>
> > On Jo, 2018-06-28 at 08:40 -0600, Jan Beulich wrote:
> > >
> > > >
> > > > >
> > > > > >
> > > > > > On 28.06.18 at 16:10, wrote:
> > > > On Vi, 2018-06-22 at
>>> Razvan Cojocaru 06/28/18 4:58 PM >>>
>On 06/28/2018 05:53 PM, Alexandru Stefan ISAILA wrote:
>> The number was with this patch so no correction. This was done with
>> xen-access write and I don't think it will make a difference if you
>> change the access to all the mem pages.
>
>Right, so
>>> Alexandru Stefan ISAILA 06/28/18 4:53 PM >>>
>On Jo, 2018-06-28 at 08:40 -0600, Jan Beulich wrote:
>> > > > On 28.06.18 at 16:10, wrote:
>> > On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
>> > > > > > On 18.06.18 at 17:17, wrote:
>> > > > From: Isaila Alexandru
>> > > >
>> > > >
On Thu, Jun 28, 2018 at 8:40 AM Jan Beulich wrote:
>
> >>> On 28.06.18 at 16:10, wrote:
> > On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
> >> > > > On 18.06.18 at 17:17, wrote:
> >> > From: Isaila Alexandru
> >> >
> >> > This patch adds access rights for the NPT pages. The access
On 06/28/2018 05:53 PM, Alexandru Stefan ISAILA wrote:
> On Jo, 2018-06-28 at 08:40 -0600, Jan Beulich wrote:
>>>
>
> On 28.06.18 at 16:10, wrote:
>>> On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
>
>>
>>>
>>> On 18.06.18 at 17:17, wrote:
> From:
On Jo, 2018-06-28 at 08:40 -0600, Jan Beulich wrote:
> >
> > >
> > > >
> > > > On 28.06.18 at 16:10, wrote:
> > On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
> > >
> > > >
> > > > >
> > > > > >
> > > > > > On 18.06.18 at 17:17, wrote:
> > > > From: Isaila Alexandru
> > > >
> > > > This
>>> On 28.06.18 at 16:10, wrote:
> On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
>> > > > On 18.06.18 at 17:17, wrote:
>> > From: Isaila Alexandru
>> >
>> > This patch adds access rights for the NPT pages. The access rights
>> > are
>> > saved in a radix tree with the root saved in
On Vi, 2018-06-22 at 09:51 -0600, Jan Beulich wrote:
> >
> > >
> > > >
> > > > On 18.06.18 at 17:17, wrote:
> > From: Isaila Alexandru
> >
> > This patch adds access rights for the NPT pages. The access rights
> > are
> > saved in a radix tree with the root saved in p2m_domain.
> Sounds resource
>>> On 18.06.18 at 17:17, wrote:
> From: Isaila Alexandru
>
> This patch adds access rights for the NPT pages. The access rights are
> saved in a radix tree with the root saved in p2m_domain.
Sounds resource intensive. How many nodes would such a radix tree have
on average?
> ---
On Tue, Jun 19, 2018 at 2:14 AM Alexandru Stefan ISAILA
wrote:
>
> On Lu, 2018-06-18 at 09:39 -0600, Tamas K Lengyel wrote:
> > On Mon, Jun 18, 2018 at 9:19 AM Alexandru Isaila
> > wrote:
> > >
> > >
> > > +static p2m_access_t p2m_get_access(struct p2m_domain *p2m,
> > > unsigned long gfn)
> > >
On Lu, 2018-06-18 at 09:39 -0600, Tamas K Lengyel wrote:
> On Mon, Jun 18, 2018 at 9:19 AM Alexandru Isaila
> wrote:
> >
> >
> > +static p2m_access_t p2m_get_access(struct p2m_domain *p2m,
> > unsigned long gfn)
> > +{
> > +void *ptr;
> > +
> > +ptr =
On Mon, Jun 18, 2018 at 9:19 AM Alexandru Isaila
wrote:
>
> From: Isaila Alexandru
>
> This patch adds access rights for the NPT pages. The access rights are
> saved in a radix tree with the root saved in p2m_domain. The rights are
> manipulated through p2m_set_access()
> and p2m_get_access()
From: Isaila Alexandru
This patch adds access rights for the NPT pages. The access rights are
saved in a radix tree with the root saved in p2m_domain. The rights are
manipulated through p2m_set_access()
and p2m_get_access() functions.
The patch follows the ept logic.
Note: It was tested with
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