summaryrefslogtreecommitdiff
path: root/arch/arm64/include/uapi
diff options
context:
space:
mode:
authorAndrew Murray <andrew.murray@arm.com>2019-04-09 10:52:43 +0100
committerWill Deacon <will.deacon@arm.com>2019-04-16 16:27:56 +0100
commit671db581815faf17cbedd7fcbc48823a247d90b1 (patch)
tree97c4cc514b103a6eb301cbd34dcc735235401f23 /arch/arm64/include/uapi
parentd16ed4105f5bbd8a34f15053045a6657f4c52c6f (diff)
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 'arch/arm64/include/uapi')
-rw-r--r--arch/arm64/include/uapi/asm/hwcap.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/hwcap.h b/arch/arm64/include/uapi/asm/hwcap.h
index 453b45af80b7..d64af3913a9e 100644
--- a/arch/arm64/include/uapi/asm/hwcap.h
+++ b/arch/arm64/include/uapi/asm/hwcap.h
@@ -53,4 +53,9 @@
#define HWCAP_PACA (1 << 30)
#define HWCAP_PACG (1UL << 31)
+/*
+ * HWCAP2 flags - for AT_HWCAP2
+ */
+#define HWCAP2_DCPODP (1 << 0)
+
#endif /* _UAPI__ASM_HWCAP_H */