* [PATCH AUTOSEL 6.1 24/28] riscv: errata: fix T-Head dcache.cva encoding
[not found] <20230924131745.1275960-1-sashal@kernel.org>
@ 2023-09-24 13:17 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2023-09-24 13:17 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Sergey Matyukevich, Sasha Levin, aou, Drew Fustini, samuel,
prabhakar.mahadev-lad.rj, Palmer Dabbelt, conor.dooley, Guo Ren,
jszhang, paul.walmsley, palmer, linux-riscv, ajones,
Heiko Stuebner
From: Icenowy Zheng <uwu@icenowy.me>
[ Upstream commit 8eb8fe67e2c84324398f5983c41b4f831d0705b3 ]
The dcache.cva encoding shown in the comments are wrong, it's for
dcache.cval1 (which is restricted to L1) instead.
Fix this in the comment and in the hardcoded instruction.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Tested-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guo Ren <guoren@kernel.org>
Tested-by: Drew Fustini <dfustini@baylibre.com>
Link: https://lore.kernel.org/r/20230912072410.2481-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/riscv/include/asm/errata_list.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/include/asm/errata_list.h b/arch/riscv/include/asm/errata_list.h
index 19a771085781a..7d2675bb71611 100644
--- a/arch/riscv/include/asm/errata_list.h
+++ b/arch/riscv/include/asm/errata_list.h
@@ -100,7 +100,7 @@ asm volatile(ALTERNATIVE( \
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
* 0000001 01001 rs1 000 00000 0001011
* dcache.cva rs1 (clean, virtual address)
- * 0000001 00100 rs1 000 00000 0001011
+ * 0000001 00101 rs1 000 00000 0001011
*
* dcache.cipa rs1 (clean then invalidate, physical address)
* | 31 - 25 | 24 - 20 | 19 - 15 | 14 - 12 | 11 - 7 | 6 - 0 |
@@ -113,7 +113,7 @@ asm volatile(ALTERNATIVE( \
* 0000000 11001 00000 000 00000 0001011
*/
#define THEAD_inval_A0 ".long 0x0265000b"
-#define THEAD_clean_A0 ".long 0x0245000b"
+#define THEAD_clean_A0 ".long 0x0255000b"
#define THEAD_flush_A0 ".long 0x0275000b"
#define THEAD_SYNC_S ".long 0x0190000b"
--
2.40.1
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