(no commit message)

diff --git a/openpower/sv/svp64.mdwn b/openpower/sv/svp64.mdwn
index eeddc6492e1ab775624a62a64b7e9f9c6d8fb2da..86b760599dcb4bb5f13eec16caf7918f14ac7d4e 100644 (file)
--- a/openpower/sv/svp64.mdwn
+++ b/openpower/sv/svp64.mdwn
@@ -209,8 +209,8 @@ on context after decoding of the Scalar suffix:
 | Field Name | Field bits | Description                            |
 |------------|------------|----------------------------------------|
 | ELWIDTH       | `4:5`      | Element Width                       |
-| PACK          | `4`        | Pack  subvectors                   |
-| UNPACK        | `5`        |  Unpack subvectoes                    |
+| PACK          | `4`        | Pack  subvectors (sv.setvl only)     |
+| UNPACK        | `5`        |  Unpack subvectors (sv.setvl only    |
 | ELWIDTH_SRC   | `6:7`      | Element Width for Source      |
 | EXTRA         | `10:18`    | Register Extra encoding                |                          
 | MODE          | `19:23`    | changes Vector behaviour               |
@@ -218,7 +218,8 @@ on context after decoding of the Scalar suffix:
 * MODE changes the behaviour of the SV operation (result saturation, mapreduce)
 * SUBVL groups elements together into vec2, vec3, vec4 for use in 3D and Audio/Video DSP work
 * ELWIDTH and ELWIDTH_SRC overrides the instruction's destination and source operand width
-* PACK and UNPACK apply to Subvector structure packing
+* PACK and UNPACK apply to Subvector structure packing: may only be
+  set by the `sv.setvl` instruction.
 * MASK (and MASK_SRC) and MASKMODE provide predication (two types of sources: scalar INT and Vector CR).
 * Bits 10 to 18 (EXTRA) are further decoded depending on the RM category for the instruction, which is determined only by decoding the Scalar 32 bit suffix.
 
@@ -292,7 +293,6 @@ Element-width overrides for CR Fields has no meaning. The bits
 are therefore used for other purposes, or when Rc=1, the Elwidth
 applies to the result being tested, but not to the Vector of CR Fields.
 
-
 # SUBVL Encoding
 
 the default for SUBVL is 1 and its encoding is 0b00 to indicate that