Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-20 Thread Julien Grall
On 19/04/2023 09:20, Bertrand Marquis wrote: Hi Jan, On 19 Apr 2023, at 09:52, Jan Beulich wrote: On 19.04.2023 09:31, Bertrand Marquis wrote: Hi Jan, On 19 Apr 2023, at 08:28, Jan Beulich wrote: On 18.04.2023 16:25, Julien Grall wrote: On 18/04/2023 14:13, Bertrand Marquis wrote: O

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-19 Thread Bertrand Marquis
Hi Jan, > On 19 Apr 2023, at 09:52, Jan Beulich wrote: > > On 19.04.2023 09:31, Bertrand Marquis wrote: >> Hi Jan, >> >>> On 19 Apr 2023, at 08:28, Jan Beulich wrote: >>> >>> On 18.04.2023 16:25, Julien Grall wrote: On 18/04/2023 14:13, Bertrand Marquis wrote: > On this serie I would

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-19 Thread Jan Beulich
On 19.04.2023 09:31, Bertrand Marquis wrote: > Hi Jan, > >> On 19 Apr 2023, at 08:28, Jan Beulich wrote: >> >> On 18.04.2023 16:25, Julien Grall wrote: >>> On 18/04/2023 14:13, Bertrand Marquis wrote: On this serie I would like to open a discussion on how to handle the vector size

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-19 Thread Julien Grall
Hi, Answering to Jan's and Bertrand's e-mail at the same time. On 19/04/2023 08:31, Bertrand Marquis wrote: On 19 Apr 2023, at 08:28, Jan Beulich wrote: On 18.04.2023 16:25, Julien Grall wrote: On 18/04/2023 14:13, Bertrand Marquis wrote: On this serie I would like to open a discussion on h

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-19 Thread Bertrand Marquis
Hi Jan, > On 19 Apr 2023, at 08:28, Jan Beulich wrote: > > On 18.04.2023 16:25, Julien Grall wrote: >> On 18/04/2023 14:13, Bertrand Marquis wrote: >>> On this serie I would like to open a discussion on how to handle the vector >>> size >>> and the corresponding command line / configuration / d

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Jan Beulich
On 18.04.2023 16:25, Julien Grall wrote: > On 18/04/2023 14:13, Bertrand Marquis wrote: >> On this serie I would like to open a discussion on how to handle the vector >> size >> and the corresponding command line / configuration / device tree parameters. >> >> In general the user must either give

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Bertrand Marquis
Hi Luca, > On 18 Apr 2023, at 16:41, Luca Fancellu wrote: > > > >> On 18 Apr 2023, at 15:38, Bertrand Marquis wrote: >> >> Hi Julien, >> >>> On 18 Apr 2023, at 16:25, Julien Grall wrote: >>> >>> >>> >>> On 18/04/2023 14:13, Bertrand Marquis wrote: Hi Luca, >>> >>> Hi, >>> On

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Luca Fancellu
> On 18 Apr 2023, at 15:38, Bertrand Marquis wrote: > > Hi Julien, > >> On 18 Apr 2023, at 16:25, Julien Grall wrote: >> >> >> >> On 18/04/2023 14:13, Bertrand Marquis wrote: >>> Hi Luca, >> >> Hi, >> >>> On this serie I would like to open a discussion on how to handle the vector >>> s

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Bertrand Marquis
Hi Julien, > On 18 Apr 2023, at 16:25, Julien Grall wrote: > > > > On 18/04/2023 14:13, Bertrand Marquis wrote: >> Hi Luca, > > Hi, > >> On this serie I would like to open a discussion on how to handle the vector >> size >> and the corresponding command line / configuration / device tree pa

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Julien Grall
On 18/04/2023 14:13, Bertrand Marquis wrote: Hi Luca, Hi, On this serie I would like to open a discussion on how to handle the vector size and the corresponding command line / configuration / device tree parameters. In general the user must either give a vector size it wants or has a solu

Re: [PATCH v5 00/12] SVE feature for arm guests

2023-04-18 Thread Bertrand Marquis
Hi Luca, On this serie I would like to open a discussion on how to handle the vector size and the corresponding command line / configuration / device tree parameters. In general the user must either give a vector size it wants or has a solution to just request the maximum supported size. In the

[PATCH v5 00/12] SVE feature for arm guests

2023-04-12 Thread Luca Fancellu
This serie is introducing the possibility for Dom0 and DomU guests to use sve/sve2 instructions. SVE feature introduces new instruction and registers to improve performances on floating point operations. The SVE feature is advertised using the ID_AA64PFR0_EL1 register, SVE field, and when availab