Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Will Deacon writes: > On Fri, Aug 26, 2016 at 10:37:08AM +0100, Punit Agrawal wrote: >> > Will Deacon writes: >> >> The easiest thing to do is just TLBI VMALLE1IS for all trapped operations, >> >> but you might want to see how that performs. >> > >> >

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Will Deacon writes: > On Fri, Aug 26, 2016 at 10:37:08AM +0100, Punit Agrawal wrote: >> > Will Deacon writes: >> >> The easiest thing to do is just TLBI VMALLE1IS for all trapped operations, >> >> but you might want to see how that performs. >> > >> > That sounds reasonable for correctness. But

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

On Fri, Aug 26, 2016 at 10:37:08AM +0100, Punit Agrawal wrote: > > Will Deacon writes: > >> The easiest thing to do is just TLBI VMALLE1IS for all trapped operations, > >> but you might want to see how that performs. > > > > That sounds reasonable for correctness. But I

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

On Fri, Aug 26, 2016 at 10:37:08AM +0100, Punit Agrawal wrote: > > Will Deacon writes: > >> The easiest thing to do is just TLBI VMALLE1IS for all trapped operations, > >> but you might want to see how that performs. > > > > That sounds reasonable for correctness. But I suspect we'll have to do >

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

On Fri, 26 Aug 2016 10:37:08 +0100 Punit Agrawal wrote: > Punit Agrawal writes: > > > Will Deacon writes: > > > >> Hi Punit, > >> > >> On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: > >>> The ARMv8

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

On Fri, 26 Aug 2016 10:37:08 +0100 Punit Agrawal wrote: > Punit Agrawal writes: > > > Will Deacon writes: > > > >> Hi Punit, > >> > >> On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: > >>> The ARMv8 architecture allows trapping of TLB maintenane instructions > >>> from

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Punit Agrawal writes: > Will Deacon writes: > >> Hi Punit, >> >> On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: >>> The ARMv8 architecture allows trapping of TLB maintenane instructions >>> from EL0/EL1 to higher exception levels. On

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Punit Agrawal writes: > Will Deacon writes: > >> Hi Punit, >> >> On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: >>> The ARMv8 architecture allows trapping of TLB maintenane instructions >>> from EL0/EL1 to higher exception levels. On encountering a trappable TLB >>> instruction

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Will Deacon writes: > Hi Punit, > > On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: >> The ARMv8 architecture allows trapping of TLB maintenane instructions >> from EL0/EL1 to higher exception levels. On encountering a trappable TLB >> instruction in a guest,

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Will Deacon writes: > Hi Punit, > > On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: >> The ARMv8 architecture allows trapping of TLB maintenane instructions >> from EL0/EL1 to higher exception levels. On encountering a trappable TLB >> instruction in a guest, an exception is taken

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Hi Punit, On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: > The ARMv8 architecture allows trapping of TLB maintenane instructions > from EL0/EL1 to higher exception levels. On encountering a trappable TLB > instruction in a guest, an exception is taken to EL2. > > Add

Re: [RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

Hi Punit, On Tue, Aug 16, 2016 at 11:45:11AM +0100, Punit Agrawal wrote: > The ARMv8 architecture allows trapping of TLB maintenane instructions > from EL0/EL1 to higher exception levels. On encountering a trappable TLB > instruction in a guest, an exception is taken to EL2. > > Add

[RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

The ARMv8 architecture allows trapping of TLB maintenane instructions from EL0/EL1 to higher exception levels. On encountering a trappable TLB instruction in a guest, an exception is taken to EL2. Add functionality to handle emulating the TLB instructions. Signed-off-by: Punit Agrawal

[RFC PATCH 6/7] arm64: KVM: Handle trappable TLB instructions

The ARMv8 architecture allows trapping of TLB maintenane instructions from EL0/EL1 to higher exception levels. On encountering a trappable TLB instruction in a guest, an exception is taken to EL2. Add functionality to handle emulating the TLB instructions. Signed-off-by: Punit Agrawal Cc: