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[PULL,03/32] target/riscv: zvbb implies zvkb

Message ID 20240627100053.150937-4-alistair.francis@wdc.com
State New
Headers show
Series [PULL,01/32] target/riscv: Extend virtual irq csrs masks to be 64 bit wide. | expand

Commit Message

Alistair Francis June 27, 2024, 10 a.m. UTC
From: Jerry Zhang Jian <jerry.zhangjian@sifive.com>

According to RISC-V crypto spec, Zvkb extension is a
subset of the Zvbb extension [1].

1: https://github.com/riscv/riscv-crypto/blob/1769c2609bf4535632e0c0fd715778f212bb272e/doc/vector/riscv-crypto-vector-zvkb.adoc?plain=1#L10

Signed-off-by: Jerry Zhang Jian <jerry.zhangjian@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240528130349.20193-1-jerry.zhangjian@sifive.com>
[ Changes by AF:
 - Tidy up commit message
 - Rebase
]
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/tcg/tcg-cpu.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 683f604d9f..fa8a17cc60 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -667,6 +667,10 @@  void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbc), true);
     }
 
+    if (cpu->cfg.ext_zvbb) {
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvkb), true);
+    }
+
     if ((cpu->cfg.ext_zvbb || cpu->cfg.ext_zvkb || cpu->cfg.ext_zvkg ||
          cpu->cfg.ext_zvkned || cpu->cfg.ext_zvknha || cpu->cfg.ext_zvksed ||
          cpu->cfg.ext_zvksh) && !cpu->cfg.ext_zve32x) {