[PATCH v2 01/14] target/riscv: Add cfg property for Zvkt extension

[Max Chou <max.chou@sifive.com>]

Vector crypto spec defines the Zvkt extension that included all of the
instructions of Zvbb & Zvbc extensions and some vector instructions.

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/cpu_cfg.h     | 1 +
 target/riscv/tcg/tcg-cpu.c | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index e7ce977189c..d8d17dedeed 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -94,6 +94,7 @@ struct RISCVCPUConfig {
     bool ext_zvknhb;
     bool ext_zvksed;
     bool ext_zvksh;
+    bool ext_zvkt;
     bool ext_zmmul;
     bool ext_zvfbfmin;
     bool ext_zvfbfwma;
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index c5ff03efce9..b9eaecb699c 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -499,6 +499,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp)
         return;
     }
 
+    if (cpu->cfg.ext_zvkt) {
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbb), true);
+        cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvbc), true);
+    }
+
     /*
      * In principle Zve*x would also suffice here, were they supported
      * in qemu
-- 
2.34.1