Re: Set DBGCLAIM when self-host debug is enabled

2021-01-11 Thread Mark Rutland
On Fri, Jan 08, 2021 at 12:00:55PM +0800, Tingwei Zhang wrote: > On Wed, Jan 06, 2021 at 08:23:56PM +0800, Mark Rutland wrote: > > On Wed, Jan 06, 2021 at 06:29:53PM +0800, ting...@codeaurora.org wrote: > > > Hi Will and Mark, > > > > Hi Tingwei, > > > > > In recent implementation of save/restore

Re: Set DBGCLAIM when self-host debug is enabled

2021-01-07 Thread Tingwei Zhang
On Wed, Jan 06, 2021 at 08:23:56PM +0800, Mark Rutland wrote: > On Wed, Jan 06, 2021 at 06:29:53PM +0800, ting...@codeaurora.org wrote: > > Hi Will and Mark, > > Hi Tingwei, > > > In recent implementation of save/restore ARM debug registers in > > EL2/EL3, we found it's necessary to know whether

Re: Set DBGCLAIM when self-host debug is enabled

2021-01-06 Thread Mark Rutland
On Wed, Jan 06, 2021 at 06:29:53PM +0800, ting...@codeaurora.org wrote: > Hi Will and Mark, Hi Tingwei, > In recent implementation of save/restore ARM debug registers in > EL2/EL3, we found it's necessary to know whether self-host debug is > enabled so EL2/EL3 can avoid saving/restoring debug reg

Set DBGCLAIM when self-host debug is enabled

2021-01-06 Thread tingwei
Hi Will and Mark, In recent implementation of save/restore ARM debug registers in EL2/EL3, we found it's necessary to know whether self-host debug is enabled so EL2/EL3 can avoid saving/restoring debug registers but no one is using debug. In ARM PSCI, it has one option to set DBGCLAIM[1] to 1