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authorDave Martin <Dave.Martin@arm.com>2017-10-31 15:51:20 +0000
committerWill Deacon <will.deacon@arm.com>2017-11-03 15:24:21 +0000
commitce6990813f15f4cabadf325791e35bd4af8152f5 (patch)
treefc442367ce7b51712bbb31021f37f7cdb41562e0 /arch/arm64
parent43994d824e8443263dc98b151e6326bf677be52e (diff)
arm64/sve: Add documentation
This patch adds basic documentation of the user/kernel interface provided by the for SVE. Signed-off-by: Dave Martin <Dave.Martin@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Alan Hayward <alan.hayward@arm.com> Cc: Alex Bennée <alex.bennee@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Szabolcs Nagy <szabolcs.nagy@arm.com> Cc: linux-api@vger.kernel.org Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
-rw-r--r--arch/arm64/include/uapi/asm/sigcontext.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/sigcontext.h b/arch/arm64/include/uapi/asm/sigcontext.h
index 7654a81bc577..3c0b48498db9 100644
--- a/arch/arm64/include/uapi/asm/sigcontext.h
+++ b/arch/arm64/include/uapi/asm/sigcontext.h
@@ -133,6 +133,9 @@ struct sve_context {
* The SVE architecture leaves space for future expansion of the
* vector length beyond its initial architectural limit of 2048 bits
* (16 quadwords).
+ *
+ * See linux/Documentation/arm64/sve.txt for a description of the VL/VQ
+ * terminology.
*/
#define SVE_VQ_BYTES 16 /* number of bytes per quadword */