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| author |   Mark Brown <broonie@kernel.org> | 2019-06-18 19:10:54 +0100 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2019-06-25 14:21:41 +0100 |
| commit | 1201937491822b61641c1878ebcd16a93aed4540 (patch) | |
| tree | dd42f26ddbc06125c9aad5dbe6ba438678c459ab /Documentation/arm64 | |
| parent | arm64: defconfig: enable CONFIG_RANDOMIZE_BASE (diff) | |
| download | wireguard-linux-1201937491822b61641c1878ebcd16a93aed4540.tar.xz wireguard-linux-1201937491822b61641c1878ebcd16a93aed4540.zip | |
arm64: Expose ARMv8.5 CondM capability to userspace
ARMv8.5 adds new instructions XAFLAG and AXFLAG to translate the
representation of the results of floating point comparisons between the
native ARM format and an alternative format used by some software. Add
a hwcap allowing userspace to determine if they are present, since we
referred to earlier CondM extensions as FLAGM call these extensions
FLAGM2.
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.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/arm64/elf_hwcaps.txt b/Documentation/arm64/elf_hwcaps.txt index b73a2519ecf2..ee8dbfe652b6 100644 --- a/Documentation/arm64/elf_hwcaps.txt +++ b/Documentation/arm64/elf_hwcaps.txt @@ -207,6 +207,10 @@ HWCAP_FLAGM Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0001. +HWCAP2_FLAGM2 + + Functionality implied by ID_AA64ISAR0_EL1.TS == 0b0010. + HWCAP_SSBS Functionality implied by ID_AA64PFR1_EL1.SSBS == 0b0010. |