Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-26 Thread Andrew Jones
On Sat, Apr 25, 2020 at 11:24:14AM +0200, Paolo Bonzini wrote: > On 24/04/20 14:16, Dr. David Alan Gilbert wrote: > >>> I was trying to work out whether we need to migrate this state, > >>> and I'm not sure. Andrew, do you know? I think this comes down > >>> to "at what points in QEMU's kvm run loo

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-25 Thread Paolo Bonzini
On 24/04/20 14:16, Dr. David Alan Gilbert wrote: >>> I was trying to work out whether we need to migrate this state, >>> and I'm not sure. Andrew, do you know? I think this comes down >>> to "at what points in QEMU's kvm run loop can migration kick in", >>> and specifically if we get a KVM_EXIT_ARM

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-24 Thread Peter Maydell
On Fri, 24 Apr 2020 at 13:17, Dr. David Alan Gilbert wrote: > > * Andrew Jones (drjo...@redhat.com) wrote: > > On Fri, Apr 17, 2020 at 11:39:25AM +0100, Peter Maydell wrote: > > > I was trying to work out whether we need to migrate this state, > > > and I'm not sure. Andrew, do you know? I think t

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-24 Thread Dr. David Alan Gilbert
* Andrew Jones (drjo...@redhat.com) wrote: > On Fri, Apr 17, 2020 at 11:39:25AM +0100, Peter Maydell wrote: > > On Mon, 23 Mar 2020 at 11:32, Beata Michalska > > wrote: > > > > > > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > > > exception with no valid ISS info to be

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-18 Thread Beata Michalska
On Fri, 17 Apr 2020 at 14:10, Andrew Jones wrote: > > On Fri, Apr 17, 2020 at 11:39:25AM +0100, Peter Maydell wrote: > > On Mon, 23 Mar 2020 at 11:32, Beata Michalska > > wrote: > > > > > > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > > > exception with no valid ISS

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-17 Thread Andrew Jones
On Fri, Apr 17, 2020 at 11:39:25AM +0100, Peter Maydell wrote: > On Mon, 23 Mar 2020 at 11:32, Beata Michalska > wrote: > > > > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > > exception with no valid ISS info to be decoded. The lack of decode info > > makes it at least

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-04-17 Thread Peter Maydell
On Mon, 23 Mar 2020 at 11:32, Beata Michalska wrote: > > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > exception with no valid ISS info to be decoded. The lack of decode info > makes it at least tricky to emulate those instruction which is one of the > (many) reasons w

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-03-25 Thread Beata Michalska
Hi, On Mon, 23 Mar 2020 at 12:44, Andrew Jones wrote: > > On Mon, Mar 23, 2020 at 11:32:26AM +, Beata Michalska wrote: > > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > > exception with no valid ISS info to be decoded. The lack of decode info > > makes it at least

Re: [PATCH v4 1/2] target/arm: kvm: Handle DABT with no valid ISS

2020-03-23 Thread Andrew Jones
On Mon, Mar 23, 2020 at 11:32:26AM +, Beata Michalska wrote: > On ARMv7 & ARMv8 some load/store instructions might trigger a data abort > exception with no valid ISS info to be decoded. The lack of decode info > makes it at least tricky to emulate those instruction which is one of the > (many)