On Tue, 22 Nov 2022 at 03:05, Zhuojia Shen <chaosdefinit...@hotmail.com> wrote: > > In CPUID registers exposed to userspace, some registers were missing > and some fields were not exposed. This patch aligns exposed ID > registers and their fields with what Linux exposes currently. > > Specifically, the following new ID registers/fields are exposed to > userspace:
These changes don't quite seem to line up with what the kernel documents that it exposes: https://www.kernel.org/doc/Documentation/arm64/cpu-feature-registers.rst > ID_AA64PFR1_EL1.BT: bits 3-0 > ID_AA64PFR1_EL1.MTE: bits 11-8 > ID_AA64PFR1_EL1.SME: bits 27-24 .SME not listed as exposed. > ID_AA64SMFR0_EL1.F32F32: bit 32 > ID_AA64SMFR0_EL1.B16F32: bit 34 > ID_AA64SMFR0_EL1.F16F32: bit 35 > ID_AA64SMFR0_EL1.I8I32: bits 39-36 > ID_AA64SMFR0_EL1.F64F64: bit 48 > ID_AA64SMFR0_EL1.I16I64: bits 55-52 > ID_AA64SMFR0_EL1.FA64: bit 63 This register not listed as exposed. > ID_AA64ISAR2_EL1.WFxT: bits 3-0 > ID_AA64ISAR2_EL1.RPRES: bits 7-4 > ID_AA64ISAR2_EL1.GPA3: bits 11-8 > ID_AA64ISAR2_EL1.APA3: bits 15-12 GPA3 and APA3 not listed as exposed. thanks -- PMM
