[PATCH 1/6] riscv: errata: thead: only set cbom size & noncoherent during boot
Jisheng Zhang
jszhang at kernel.org
Fri May 26 09:59:53 PDT 2023
The CBOM size and whether the HW is noncoherent is known and
determined during booting and won't change after that.
Signed-off-by: Jisheng Zhang <jszhang at kernel.org>
---
arch/riscv/errata/thead/errata.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c
index c259dc925ec1..be84b14f0118 100644
--- a/arch/riscv/errata/thead/errata.c
+++ b/arch/riscv/errata/thead/errata.c
@@ -45,8 +45,11 @@ static bool errata_probe_cmo(unsigned int stage,
if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
return false;
- riscv_cbom_block_size = L1_CACHE_BYTES;
- riscv_noncoherent_supported();
+ if (stage == RISCV_ALTERNATIVES_BOOT) {
+ riscv_cbom_block_size = L1_CACHE_BYTES;
+ riscv_noncoherent_supported();
+ }
+
return true;
}
--
2.40.1
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