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| author | Joey Gouly <joey.gouly@arm.com> | 2021-12-10 19:54:30 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-12-13 21:52:59 +0300 |
| commit | 5c13f042e73200b50573ace63e1a6b94e2917616 (patch) | |
| tree | de22698982896d4808630041ca8797f2b522ca3b /Documentation/arm64/elf_hwcaps.rst | |
| parent | d58071a8a76d779eedab38033ae4c821c30295a5 (diff) | |
| download | linux-5c13f042e73200b50573ace63e1a6b94e2917616.tar.xz | |
arm64: cpufeature: add HWCAP for FEAT_AFP
Add a new HWCAP to detect the Alternate Floating-point Behaviour
feature (FEAT_AFP), introduced in Armv8.7.
Also expose this to userspace in the ID_AA64MMFR1_EL1 feature register.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211210165432.8106-2-joey.gouly@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'Documentation/arm64/elf_hwcaps.rst')
| -rw-r--r-- | Documentation/arm64/elf_hwcaps.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst index af106af8e1c0..247728d37911 100644 --- a/Documentation/arm64/elf_hwcaps.rst +++ b/Documentation/arm64/elf_hwcaps.rst @@ -251,6 +251,10 @@ HWCAP2_ECV Functionality implied by ID_AA64MMFR0_EL1.ECV == 0b0001. +HWCAP2_AFP + + Functionality implied by ID_AA64MFR1_EL1.AFP == 0b0001. + 4. Unused AT_HWCAP bits ----------------------- |