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authorAndrew Murray <andrew.murray@arm.com>2019-04-09 12:52:43 +0300
committerWill Deacon <will.deacon@arm.com>2019-04-16 18:27:56 +0300
commit671db581815faf17cbedd7fcbc48823a247d90b1 (patch)
tree97c4cc514b103a6eb301cbd34dcc735235401f23 /Documentation/arm64
parentd16ed4105f5bbd8a34f15053045a6657f4c52c6f (diff)
downloadlinux-671db581815faf17cbedd7fcbc48823a247d90b1.tar.xz
arm64: Expose DC CVADP to userspace
ARMv8.5 builds upon the ARMv8.2 DC CVAP instruction by introducing a DC CVADP instruction which cleans the data cache to the point of deep persistence. Let's expose this support via the arm64 ELF hwcaps. Signed-off-by: Andrew Murray <andrew.murray@arm.com> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@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 11805777031e..55431fd2a67a 100644
--- a/Documentation/arm64/elf_hwcaps.txt
+++ b/Documentation/arm64/elf_hwcaps.txt
@@ -135,6 +135,10 @@ HWCAP_DCPOP
Functionality implied by ID_AA64ISAR1_EL1.DPB == 0b0001.
+HWCAP2_DCPODP
+
+ Functionality implied by ID_AA64ISAR1_EL1.DPB == 0b0010.
+
HWCAP_SHA3
Functionality implied by ID_AA64ISAR0_EL1.SHA3 == 0b0001.