Re: [PATCH v2 12/12] target/arm: Allow users to set the number of VFP registers

[Mads Ynddal]

> ARM's "Vector Floating Point" unit has many implementation with different
> features: VFPv3-D16/D32, *FP16, VFPv4-D16/D32, Neon, etc. The test might
> be too strict and could possibly be removed.
> 
> Could you send us the result of 'cat /proc/cpuinfo' on the host ?
> 
> Thanks,
> 
> C.

The host is macOS, so there's no '/proc/cpuinfo'. I can get this from sysctl:

$ sysctl -a | grep hw.optional
hw.optional.arm.FEAT_FlagM: 1
hw.optional.arm.FEAT_FlagM2: 1
hw.optional.arm.FEAT_FHM: 1
hw.optional.arm.FEAT_DotProd: 1
hw.optional.arm.FEAT_SHA3: 1
hw.optional.arm.FEAT_RDM: 1
hw.optional.arm.FEAT_LSE: 1
hw.optional.arm.FEAT_SHA256: 1
hw.optional.arm.FEAT_SHA512: 1
hw.optional.arm.FEAT_SHA1: 1
hw.optional.arm.FEAT_AES: 1
hw.optional.arm.FEAT_PMULL: 1
hw.optional.arm.FEAT_SPECRES: 0
hw.optional.arm.FEAT_SB: 1
hw.optional.arm.FEAT_FRINTTS: 1
hw.optional.arm.FEAT_LRCPC: 1
hw.optional.arm.FEAT_LRCPC2: 1
hw.optional.arm.FEAT_FCMA: 1
hw.optional.arm.FEAT_JSCVT: 1
hw.optional.arm.FEAT_PAuth: 1
hw.optional.arm.FEAT_PAuth2: 0
hw.optional.arm.FEAT_FPAC: 0
hw.optional.arm.FEAT_DPB: 1
hw.optional.arm.FEAT_DPB2: 1
hw.optional.arm.FEAT_BF16: 0
hw.optional.arm.FEAT_I8MM: 0
hw.optional.arm.FEAT_ECV: 1
hw.optional.arm.FEAT_LSE2: 1
hw.optional.arm.FEAT_CSV2: 1
hw.optional.arm.FEAT_CSV3: 1
hw.optional.arm.FEAT_DIT: 1
hw.optional.arm.FEAT_FP16: 1
hw.optional.arm.FEAT_SSBS: 1
hw.optional.arm.FEAT_BTI: 0
hw.optional.arm.FP_SyncExceptions: 1
hw.optional.floatingpoint: 1
hw.optional.neon: 1
hw.optional.neon_hpfp: 1
hw.optional.neon_fp16: 1
hw.optional.armv8_1_atomics: 1
hw.optional.armv8_2_fhm: 1
hw.optional.armv8_2_sha512: 1
hw.optional.armv8_2_sha3: 1
hw.optional.armv8_3_compnum: 1
hw.optional.watchpoint: 4
hw.optional.breakpoint: 6
hw.optional.armv8_crc32: 1
hw.optional.armv8_gpi: 1
hw.optional.AdvSIMD: 1
hw.optional.AdvSIMD_HPFPCvt: 1
hw.optional.ucnormal_mem: 1
hw.optional.arm64: 1


If it's any help, the Linux guest looks like this:

$ cat /proc/cpuinfo
processor : 0
BogoMIPS : 48.00
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp 
cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat 
ilrcpc flagm sb paca pacg dcpodp flagm2 frint
CPU implementer : 0x00
CPU architecture: 8
CPU variant : 0x0
CPU part : 0x000
CPU revision : 0

—
Mads Ynddal