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authorMark Brown <broonie@kernel.org>2019-06-18 19:10:55 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2019-06-25 14:24:00 +0100
commitca9503fc9e9812aa6258e55d44edb03eb30fc46f (patch)
tree5deac994c347391edae01f5601a02db7f8be5434 /Documentation/arm64
parent1201937491822b61641c1878ebcd16a93aed4540 (diff)
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arm64: Expose FRINT capabilities to userspace
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>
Diffstat (limited to 'Documentation/arm64')
-rw-r--r--Documentation/arm64/elf_hwcaps.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt
index ee8dbfe652b6..5ae2ef2c12f3 100644
--- a/Documentation/arm64/elf_hwcaps.txt
+++ b/Documentation/arm64/elf_hwcaps.txt
@@ -227,6 +227,10 @@ HWCAP_PACG
ID_AA64ISAR1_EL1.GPI == 0b0001, as described by
Documentation/arm64/pointer-authentication.txt.
+HWCAP2_FRINT
+
+ Functionality implied by ID_AA64ISAR1_EL1.FRINTTS == 0b0001.
+
4. Unused AT_HWCAP bits
-----------------------