From: lkcl Date: Sun, 16 Apr 2023 10:51:25 +0000 (+0100) Subject: (no commit message) X-Git-Tag: opf_rfc_ls009_v1~25 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7214391bb4178437acea7d46823e690877640561;p=libreriscv.git --- diff --git a/openpower/sv/remap.mdwn b/openpower/sv/remap.mdwn index bd2c0ff2a..45407b2ac 100644 --- a/openpower/sv/remap.mdwn +++ b/openpower/sv/remap.mdwn @@ -77,6 +77,12 @@ for *possible* latency alone. Commonly-used patterns such as Matrix Multiply, DCT and FFT have helper instruction options which make REMAP easier to use. +*Future specification note: future versions of the REMAP Management instructions +will extend to EXT1xx Prefixed variants. This will overcome some of the limitations +present in the 32-bit variants of the REMAP Management instructions that at +present require direct writing to SVSHAPE0-3 SPRs. Additional +REMAP Modes may also be introduced at that time.* + There are four types of REMAP: * **Matrix**, also known as 2D and 3D reshaping, can perform in-place @@ -114,12 +120,6 @@ it is possible to service Precise Interrupts without affecting latency Parallel Reduction instructions, because their Architectural State cannot hold the partial results). -*Future specification note: future versions of the REMAP Management instructions -will extend to EXT1xx Prefixed variants. This will overcome some of the limitations -present in the 32-bit variants of the REMAP Management instructions that at -present require direct writing to SVSHAPE0-3 SPRs. Additional -REMAP Modes may also be introduced at that time.* - ## Basic principle The following illustrates why REMAP was added.