riscv: errata: prefix T-Head mnemonics with th.

T-Head now maintains some specification for their extended instructions
at [1], in which all instructions are prefixed "th.".

Follow this practice in the kernel comments.

Link: https://github.com/T-head-Semi/thead-extension-spec [1]
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Icenowy Zheng 2023-08-27 17:08:13 +08:00 committed by Palmer Dabbelt
parent 8eb8fe67e2
commit 27fb27197c
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@ -95,25 +95,25 @@ asm volatile(ALTERNATIVE( \
#endif
/*
* dcache.ipa rs1 (invalidate, physical address)
* th.dcache.ipa rs1 (invalidate, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01010 rs1 000 00000 0001011
* dache.iva rs1 (invalida, virtual address)
* th.dache.iva rs1 (invalida, virtual address)
* 0000001 00110 rs1 000 00000 0001011
*
* dcache.cpa rs1 (clean, physical address)
* th.dcache.cpa rs1 (clean, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01001 rs1 000 00000 0001011
* dcache.cva rs1 (clean, virtual address)
* th.dcache.cva rs1 (clean, virtual address)
* 0000001 00101 rs1 000 00000 0001011
*
* dcache.cipa rs1 (clean then invalidate, physical address)
* th.dcache.cipa rs1 (clean then invalidate, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01011 rs1 000 00000 0001011
* dcache.civa rs1 (... virtual address)
* th.dcache.civa rs1 (... virtual address)
* 0000001 00111 rs1 000 00000 0001011
*
* sync.s (make sure all cache operations finished)
* th.sync.s (make sure all cache operations finished)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000000 11001 00000 000 00000 0001011
*/