Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-25 Thread Bertrand Marquis
l...@kernel.org; Andre Przywara >> ; Penny Zheng ; Kaly >> Xin ; nd >> Subject: Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown >> FP/SIMD implement ID >> >> >> >> On 24/08/2020 17:57, Bertrand Marquis wrote: >>> Hi Julien, >> >

RE: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-24 Thread Wei Chen
Hi Julien, Bertrand, > -Original Message- > From: Julien Grall > Sent: 2020年8月25日 1:23 > To: Bertrand Marquis > Cc: Wei Chen ; Xen-devel de...@lists.xenproject.org>; sstabell...@kernel.org; Andre Przywara > ; Penny Zheng ; Kaly > Xin ; nd > Subject: Re: [P

Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-24 Thread Julien Grall
On 24/08/2020 17:57, Bertrand Marquis wrote: Hi Julien, Hi, On 24 Aug 2020, at 14:34, Julien Grall wrote: Hi Wei, On 24/08/2020 04:28, Wei Chen wrote: Arm ID_AA64PFR0_EL1 register provides two fields to describe CPU FP/SIMD implementations. Currently, we exactly know the meaning of 0

Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-24 Thread Bertrand Marquis
Hi Julien, > On 24 Aug 2020, at 14:34, Julien Grall wrote: > > Hi Wei, > > On 24/08/2020 04:28, Wei Chen wrote: >> Arm ID_AA64PFR0_EL1 register provides two fields to describe CPU >> FP/SIMD implementations. Currently, we exactly know the meaning of >> 0x0, 0x1 and 0xf of these fields. Xen trea

Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-24 Thread Julien Grall
Hi Wei, On 24/08/2020 04:28, Wei Chen wrote: Arm ID_AA64PFR0_EL1 register provides two fields to describe CPU FP/SIMD implementations. Currently, we exactly know the meaning of 0x0, 0x1 and 0xf of these fields. Xen treats value < 8 as FP/SIMD features presented. If there is a value 0x2 bumped in

Re: [PATCH v2 2/2] xen/arm: Throw messages for unknown FP/SIMD implement ID

2020-08-24 Thread Bertrand Marquis
Hi, > On 24 Aug 2020, at 04:28, Wei Chen wrote: > > Arm ID_AA64PFR0_EL1 register provides two fields to describe CPU > FP/SIMD implementations. Currently, we exactly know the meaning of > 0x0, 0x1 and 0xf of these fields. Xen treats value < 8 as FP/SIMD > features presented. If there is a value