Re: [PATCH v3 25/28] arm64/sve: Detect SVE and activate runtime support

2017-10-12 Thread Catalin Marinas
On Tue, Oct 10, 2017 at 07:38:42PM +0100, Dave P Martin wrote: > This patch enables detection of hardware SVE support via the > cpufeatures framework, and reports its presence to the kernel and > userspace via the new ARM64_SVE cpucap and HWCAP_SVE hwcap > respectively. > > Userspace can also

Re: [PATCH v3 25/28] arm64/sve: Detect SVE and activate runtime support

2017-10-11 Thread Suzuki K Poulose
On 10/10/17 19:38, Dave Martin wrote: This patch enables detection of hardware SVE support via the cpufeatures framework, and reports its presence to the kernel and userspace via the new ARM64_SVE cpucap and HWCAP_SVE hwcap respectively. Userspace can also detect SVE using ID_AA64PFR0_EL1,

[PATCH v3 25/28] arm64/sve: Detect SVE and activate runtime support

2017-10-10 Thread Dave Martin
This patch enables detection of hardware SVE support via the cpufeatures framework, and reports its presence to the kernel and userspace via the new ARM64_SVE cpucap and HWCAP_SVE hwcap respectively. Userspace can also detect SVE using ID_AA64PFR0_EL1, using the cpufeatures MRS emulation. When