Messages in this thread | | | Date | Tue, 10 Jan 2017 17:15:00 +0000 | From | Will Deacon <> | Subject | Re: [PATCH v4 0/9] arm64: Expose CPUID registers via emulation |
| |
On Mon, Jan 09, 2017 at 05:28:23PM +0000, Suzuki K Poulose wrote: > This series adds a new ABI to expose the CPU feature registers > to the user space via emulation of MRS instruction. The system exposes > only a limited set of feature values (See the documentation patch) > from the cpufeature infrastructure. The feature bits that are not > exposed are set to the 'safe value' which implies 'not supported'. > > Apart from the selected feature registers, we expose MIDR_EL1 (Main > ID Register). The user should be aware that, reading MIDR_EL1 can be > tricky on a heterogeneous system (just like getcpu()). We export the > value of the current CPU where 'MRS' is executed. > > Applies on v4.10-rc3.
Thanks, I'll queue this for 4.11.
Will
| |