to inherit the old
suppress #VE bit value if it is already set and to set it to 1
otherwise, which is safer and more reliable.
Signed-off-by: Vlad Ioan Topan
Signed-off-by: Adrian Pop
---
xen/arch/x86/mm/mem_access.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/xen/a
Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
domain to change the value of the #VE suppress bit for a page.
Signed-off-by: Adrian Pop
---
xen/arch/x86/hvm/hvm.c | 14
xen/arch/x86/mm/mem_access.c| 48 +
xen
;s best to define p2m_set_suppress_ve() in
mem_access.c since this file contains common functions for x86 (vmx &
svm) and the function is Intel-specific.
Adrian Pop (2):
x86/altp2m: Add a hvmop for setting the suppress #VE bit
libxc: Add support for the altp2m suppress #VE hvmop
Vlad Ioan To
This adds a wrapper for issuing HVMOP_altp2m_set_suppress_ve from a
domain.
Signed-off-by: Adrian Pop
---
tools/libxc/include/xenctrl.h | 2 ++
tools/libxc/xc_altp2m.c | 24
2 files changed, 26 insertions(+)
diff --git a/tools/libxc/include/xenctrl.h b/tools
On Thu, May 18, 2017 at 11:27:44AM -0600, Tamas K Lengyel wrote:
> On Thu, May 18, 2017 at 9:07 AM, Adrian Pop wrote:
> > Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
> > domain to change the value of the #VE suppress bit for a page.
> >
> >
Hello,
On Mon, May 29, 2017 at 08:38:33AM -0600, Jan Beulich wrote:
> >>> On 18.05.17 at 17:07, wrote:
> > --- a/xen/arch/x86/mm/mem_access.c
> > +++ b/xen/arch/x86/mm/mem_access.c
> > @@ -466,6 +466,54 @@ int p2m_get_mem_access(struct domain *d, gfn_t gfn,
> > xenmem_access_t *access)
> > }
>
On Tue, Jun 06, 2017 at 07:08:43AM -0600, Jan Beulich wrote:
> >>> On 06.06.17 at 15:00, wrote:
> > On Mon, May 29, 2017 at 08:38:33AM -0600, Jan Beulich wrote:
> >> >>> On 18.05.17 at 17:07, wrote:
> >> > +
> >> > +if ( !cpu_has_vmx )
> >> > +return -EOPNOTSUPP;
> >>
> >> Is this en
On Thu, Jun 08, 2017 at 08:08:56AM -0600, Jan Beulich wrote:
> >>> On 08.06.17 at 15:49, wrote:
> > On Tue, Jun 06, 2017 at 07:08:43AM -0600, Jan Beulich wrote:
> >> >>> On 06.06.17 at 15:00, wrote:
> >> > On Mon, May 29, 2017 at 08:38:33AM -0600, Jan Beulich wrote:
> >> >> >>> On 18.05.17 at 17:
to inherit the old
suppress #VE bit value if it is already set and to set it to 1
otherwise, which is safer and more reliable.
Signed-off-by: Vlad Ioan Topan
Signed-off-by: Adrian Pop
---
xen/arch/x86/mm/mem_access.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/xen/a
Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
privileged domain to change the value of the #VE suppress bit for a
page.
Add a libxc wrapper for invoking this hvmop.
Signed-off-by: Adrian Pop
---
tools/libxc/include/xenctrl.h | 2 ++
tools/libxc/xc_altp2m.c | 24
)
- allow only privileged domains to use this hvmop
- merge patch #2 and patch #3 (Jan Beulich)
Adrian Pop (1):
x86/altp2m: Add a hvmop for setting the suppress #VE bit
Vlad Ioan Topan (1):
x86/mm: Change default value for suppress #VE in set_mem_access()
tools/libxc/include/xenctrl.h
I've just noticed I had forgotten to update the version of the patch in
the email subject. Sorry!
___
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Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
On Mon, Jun 12, 2017 at 04:51:48PM +0100, Wei Liu wrote:
> On Fri, Jun 09, 2017 at 07:51:54PM +0300, Adrian Pop wrote:
> > Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
> > privileged domain to change the value of the #VE suppress bit for a
> > page.
rcu_lock_current_domain is called at the beginning of do_altp2m_op, but
the altp2m_vcpu_enable_notify subop handler might skip calling
rcu_unlock_domain, possibly hanging the domain altogether.
Signed-off-by: Adrian Pop
---
xen/arch/x86/hvm/hvm.c | 8 +++-
1 file changed, 7 insertions(+), 1
Hello,
On Tue, Nov 14, 2017 at 08:25:57AM -0700, Jan Beulich wrote:
> >>> On 14.11.17 at 16:11, wrote:
> > rcu_lock_current_domain is called at the beginning of do_altp2m_op, but
> > the altp2m_vcpu_enable_notify subop handler might skip calling
> > rcu_unlock_domain, possibly hanging the domain
have potentially
enabled #VE for the current domain even if it had intended to enable it
for another one (not a supported functionality).
Signed-off-by: Adrian Pop
Reviewed-by: Andrew Cooper
---
changes in v2:
- reword the commit message
---
xen/arch/x86/hvm/hvm.c | 8 +++-
1 file chang
to inherit the old
suppress #VE bit value if it is already set and to set it to 1
otherwise, which is safer and more reliable.
Signed-off-by: Vlad Ioan Topan
Signed-off-by: Adrian Pop
---
xen/arch/x86/mm/mem_access.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/xen/a
done in Xen internally using ept_set_entry().
Following the discussion from
https://lists.xen.org/archives/html/xen-devel/2017-03/msg01312.html this
patch introduces a new hvmop to set this bit and thus have control over
which pages generate #VE and which VM-Exit.
Adrian Pop (1):
x86/altp2m: Add a
Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
privileged domain to change the value of the #VE suppress bit for a
page.
Add a libxc wrapper for invoking this hvmop.
Signed-off-by: Adrian Pop
Acked-by: Wei Liu
---
changes in v3:
- fix indentation (Wei Liu)
- use return
Hello,
On Tue, Jul 18, 2017 at 11:26:45AM -0600, Tamas K Lengyel wrote:
> On Tue, Jul 18, 2017 at 9:25 AM, Adrian Pop wrote:
> > From: Vlad Ioan Topan
> >
> > The default value for the "suppress #VE" bit set by set_mem_access()
> > currently depends on w
On Tue, Jul 18, 2017 at 11:19:07AM -0600, Tamas K Lengyel wrote:
> On Tue, Jul 18, 2017 at 9:25 AM, Adrian Pop wrote:
> > Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
> > privileged domain to change the value of the #VE suppress bit for a
> > page
> Add a libxc wrapper for invoking this hvmop.
> >
> > Signed-off-by: Adrian Pop
> > ---
>
> Please properly version your patch submissions, and please put
> here a brief summary of what changed from the previous version.
OK. I've mistakenly sent the mail wi
On Mon, Jun 12, 2017 at 04:51:48PM +0100, Wei Liu wrote:
> On Fri, Jun 09, 2017 at 07:51:54PM +0300, Adrian Pop wrote:
> > Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
> > privileged domain to change the value of the #VE suppress bit for a
> > page.
On Fri, Jun 16, 2017 at 02:39:10AM -0600, Jan Beulich wrote:
> >>> On 15.06.17 at 21:01, wrote:
> > On Fri, Jun 9, 2017 at 10:51 AM, Adrian Pop wrote:
> >> --- a/xen/arch/x86/mm/mem_access.c
> >> +++ b/xen/arch/x86/mm/mem_access.c
> >> @@ -466,6 +466,
On Thu, Jun 22, 2017 at 06:13:22AM -0600, Jan Beulich wrote:
> >>> On 22.06.17 at 14:04, wrote:
> > On Fri, Jun 16, 2017 at 02:39:10AM -0600, Jan Beulich wrote:
> >> >>> On 15.06.17 at 21:01, wrote:
> >> > On Fri, Jun 9, 2017 at 10:51 AM,
On Thu, Jun 15, 2017 at 01:01:36PM -0600, Tamas K Lengyel wrote:
> On Fri, Jun 9, 2017 at 10:51 AM, Adrian Pop wrote:
> > diff --git a/xen/arch/x86/mm/mem_access.c b/xen/arch/x86/mm/mem_access.c
> > index d0b0767855..8c39db13e3 100644
> > --- a/xen/arch/x86/mm/mem_access.c
&
On Thu, Jun 22, 2017 at 06:13:22AM -0600, Jan Beulich wrote:
> >>> On 22.06.17 at 14:04, wrote:
> > On Fri, Jun 16, 2017 at 02:39:10AM -0600, Jan Beulich wrote:
> >> >>> On 15.06.17 at 21:01, wrote:
> >> > On Fri, Jun 9, 2017 at 10:51 AM,
Adds monitor support for descriptor access events (reads & writes of
IDTR/GDTR/LDTR/TR) for the x86 architecture (VMX and SVM).
Signed-off-by: Adrian Pop
---
changes in v2:
- use two sub-structs (vmx/svm) for vm_event_desc_access (Tamas K
Lengyel)
- more compact version of the descripto
On Tue, Apr 04, 2017 at 01:52:24PM +0300, Razvan Cojocaru wrote:
> You've forgotten Wei Liu's ack for the first version of the patch.
>
> For the vm_event bits:
>
> Acked-by: Razvan Cojocaru
Okay, will include them next time. Thanks!
___
Xen-devel m
On Tue, Apr 04, 2017 at 09:23:28AM -0400, Boris Ostrovsky wrote:
> On 04/04/2017 05:57 AM, Adrian Pop wrote:
> > Adds monitor support for descriptor access events (reads & writes of
> > IDTR/GDTR/LDTR/TR) for the x86 architecture (VMX and SVM).
> >
> > Signed-off-
On Tue, Apr 04, 2017 at 04:26:24PM +0100, Andrew Cooper wrote:
> On 04/04/17 10:57, Adrian Pop wrote:
> > diff --git a/xen/arch/x86/hvm/monitor.c b/xen/arch/x86/hvm/monitor.c
> > index f5cd245771..d60e4afd0c 100644
> > --- a/xen/arch/x86/hvm/monitor.c
> > +++ b
Introduce a new hvmop, HVMOP_altp2m_set_suppress_ve, which allows a
domain to change the value of the #VE suppress bit for a page.
Signed-off-by: Adrian Pop
---
xen/arch/x86/hvm/hvm.c | 14
xen/arch/x86/mm/mem_access.c| 48 +
xen
tains common functions for x86 (vmx & svm), while this function is
Intel-specific.
Adrian Pop (2):
x86/altp2m: Add a hvmop for setting the suppress #VE bit
libxc: Add support for the altp2m suppress #VE hvmop
Vlad Ioan Topan (1):
x86/mm: Change default value for suppress #VE in set_m
This adds a wrapper for issuing HVMOP_altp2m_set_suppress_ve from a
domain.
Signed-off-by: Adrian Pop
---
tools/libxc/include/xenctrl.h | 2 ++
tools/libxc/xc_altp2m.c | 24
2 files changed, 26 insertions(+)
diff --git a/tools/libxc/include/xenctrl.h b/tools
From: Vlad Ioan Topan
The default value for the "suppress #VE" bit set by set_mem_access()
currently depends on whether the call is made from the same domain (the
bit is set when called from another domain and cleared if called from
the same domain). This patch changes that behavior to inherit th
Hello,
On Wed, Apr 05, 2017 at 08:26:27AM -0600, Jan Beulich wrote:
> >>> On 04.04.17 at 11:57, wrote:
> > --- a/xen/arch/x86/hvm/hvm.c
> > +++ b/xen/arch/x86/hvm/hvm.c
> > @@ -3572,6 +3572,43 @@ gp_fault:
> > return X86EMUL_EXCEPTION;
> > }
> >
> > +int hvm_descriptor_access_intercept(ui
On Thu, Apr 06, 2017 at 03:20:21AM -0600, Jan Beulich wrote:
> >>> On 06.04.17 at 10:59, wrote:
> > On Wed, Apr 05, 2017 at 08:26:27AM -0600, Jan Beulich wrote:
> >> >>> On 04.04.17 at 11:57, wrote:
> >> > --- a/xen/arch/x86/hvm/hvm.c
> >> > +++ b/xen/arch/x86/hvm/hvm.c
> >> > @@ -3572,6 +3572,43
On Thu, Apr 06, 2017 at 08:09:23AM -0600, Jan Beulich wrote:
> >>> On 06.04.17 at 11:37, wrote:
> > On Thu, Apr 06, 2017 at 03:20:21AM -0600, Jan Beulich wrote:
> >> >>> On 06.04.17 at 10:59, wrote:
> >> > On Wed, Apr 05, 2017 at 08:26:27AM -0600, Jan Beulich wrote:
> >> >> >>> On 04.04.17 at 11:
Adds monitor support for descriptor access events (reads & writes of
IDTR/GDTR/LDTR/TR) for the x86 architecture (VMX and SVM).
Signed-off-by: Adrian Pop
Acked-by: Wei Liu
Acked-by: Razvan Cojocaru
Reviewed-by: Boris Ostrovsky
Reviewed-by: Kevin Tian
---
changes in v3:
- remove
On Fri, Apr 07, 2017 at 07:18:26AM -0600, Jan Beulich wrote:
> >>> On 07.04.17 at 12:17, wrote:
> > --- a/xen/arch/x86/hvm/hvm.c
> > +++ b/xen/arch/x86/hvm/hvm.c
> > @@ -3589,6 +3589,41 @@ gp_fault:
> > return X86EMUL_EXCEPTION;
> > }
> >
> > +int hvm_descriptor_access_intercept(uint64_t e
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