Le 24/03/2020 à 13:00, Greg Kurz a écrit :
On Tue, 24 Mar 2020 10:43:23 +1100
Paul Mackerras wrote:
On Fri, Mar 20, 2020 at 01:22:48PM +0100, Greg Kurz wrote:
On Fri, 20 Mar 2020 11:26:42 +0100
Laurent Dufour wrote:
The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
On Tue, 24 Mar 2020 10:43:23 +1100
Paul Mackerras wrote:
> On Fri, Mar 20, 2020 at 01:22:48PM +0100, Greg Kurz wrote:
> > On Fri, 20 Mar 2020 11:26:42 +0100
> > Laurent Dufour wrote:
> >
> > > The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
> > > prevent a malicious VM
On Fri, Mar 20, 2020 at 01:22:48PM +0100, Greg Kurz wrote:
> On Fri, 20 Mar 2020 11:26:42 +0100
> Laurent Dufour wrote:
>
> > The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
> > prevent a malicious VM or SVM to call them. This could lead to weird result
> > and should be
On Fri, Mar 20, 2020 at 11:26:42AM +0100, Laurent Dufour wrote:
> The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
> prevent a malicious VM or SVM to call them. This could lead to weird result
> and should be filtered out.
>
> Checking the Secure bit of the calling MSR
Le 20/03/2020 à 13:22, Greg Kurz a écrit :
On Fri, 20 Mar 2020 11:26:42 +0100
Laurent Dufour wrote:
The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
prevent a malicious VM or SVM to call them. This could lead to weird result
and should be filtered out.
Checking the
On Fri, 20 Mar 2020 11:26:42 +0100
Laurent Dufour wrote:
> The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
> prevent a malicious VM or SVM to call them. This could lead to weird result
> and should be filtered out.
>
> Checking the Secure bit of the calling MSR ensure
The Hcall named H_SVM_* are reserved to the Ultravisor. However, nothing
prevent a malicious VM or SVM to call them. This could lead to weird result
and should be filtered out.
Checking the Secure bit of the calling MSR ensure that the call is coming
from either the Ultravisor or a SVM. But any