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arm64: Expose FRINT capabilities to userspace

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ARMv8.5 introduces the FRINT series of instructions for rounding floating
point numbers to integers. Provide a capability to userspace in order to
allow applications to determine if the system supports these instructions.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown
2019-06-18 19:10:55 +01:00
committed by Catalin Marinas
parent 1201937491
commit ca9503fc9e
6 changed files with 9 additions and 0 deletions
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arch/arm64/include/asm/hwcap.h
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@@ -96,6 +96,7 @@
#define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3)
#define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4)
#define KERNEL_HWCAP_FLAGM2 __khwcap2_feature(FLAGM2)
#define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT)
/*
* This yields a mask that user programs can use to figure out what