Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-30 Thread Isaila Alexandru
On 27.03.2020 04:30, Tian, Kevin wrote: From: Isaila Alexandru Sent: Tuesday, March 24, 2020 6:46 PM Hi Kevin and sorry for the long reply time, On 10.03.2020 04:04, sTian, Kevin wrote: From: Alexandru Stefan ISAILA Sent: Tuesday, March 3, 2020 8:23 PM At this moment a guest can call

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-26 Thread Tian, Kevin
> From: Isaila Alexandru > Sent: Tuesday, March 24, 2020 6:46 PM > > > Hi Kevin and sorry for the long reply time, > > On 10.03.2020 04:04, sTian, Kevin wrote: > >> From: Alexandru Stefan ISAILA > >> Sent: Tuesday, March 3, 2020 8:23 PM > >> > >> At this moment a guest can call vmfunc to

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-24 Thread Isaila Alexandru
Hi Kevin and sorry for the long reply time, On 10.03.2020 04:04, sTian, Kevin wrote: From: Alexandru Stefan ISAILA Sent: Tuesday, March 3, 2020 8:23 PM At this moment a guest can call vmfunc to change the altp2m view. This should be limited in order to avoid any unwanted view switch. I

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-09 Thread Tian, Kevin
> From: Alexandru Stefan ISAILA > Sent: Tuesday, March 3, 2020 8:23 PM > > At this moment a guest can call vmfunc to change the altp2m view. This > should be limited in order to avoid any unwanted view switch. I look forward to more elaboration of the motivation, especially for one who doesn't

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-04 Thread Alexandru Stefan ISAILA
Hi, Any thoughts on this patch are appreciated. Thanks, Alex On 03.03.2020 14:23, Alexandru Stefan ISAILA wrote: > At this moment a guest can call vmfunc to change the altp2m view. This > should be limited in order to avoid any unwanted view switch. > > The new xc_altp2m_set_visibility()

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-04 Thread Alexandru Stefan ISAILA
On 04.03.2020 16:07, Jan Beulich wrote: > On 04.03.2020 14:57, Alexandru Stefan ISAILA wrote: >> Hi George, >> >> This is a kind reminder if you can take a look at this patch when you >> have the time. > > Are you perhaps not aware of the recent maintainer change on > xen/arch/x86/mm/? What you

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-04 Thread Jan Beulich
On 04.03.2020 14:57, Alexandru Stefan ISAILA wrote: > Hi George, > > This is a kind reminder if you can take a look at this patch when you > have the time. Are you perhaps not aware of the recent maintainer change on xen/arch/x86/mm/? What you need to go hunt is ... > On 03.03.2020 14:23,

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-04 Thread Alexandru Stefan ISAILA
Hi George, This is a kind reminder if you can take a look at this patch when you have the time. Thanks, Alex On 03.03.2020 14:23, Alexandru Stefan ISAILA wrote: > At this moment a guest can call vmfunc to change the altp2m view. This > should be limited in order to avoid any unwanted view

Re: [Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-03 Thread Jan Beulich
On 03.03.2020 13:23, Alexandru Stefan ISAILA wrote: > At this moment a guest can call vmfunc to change the altp2m view. This > should be limited in order to avoid any unwanted view switch. > > The new xc_altp2m_set_visibility() solves this by making views invisible > to vmfunc. > This is done by

[Xen-devel] [PATCH V6] x86/altp2m: Hypercall to set altp2m view visibility

2020-03-03 Thread Alexandru Stefan ISAILA
At this moment a guest can call vmfunc to change the altp2m view. This should be limited in order to avoid any unwanted view switch. The new xc_altp2m_set_visibility() solves this by making views invisible to vmfunc. This is done by having a separate arch.altp2m_working_eptp that is populated and