[PATCH 01/39] target/riscv: add zvkb cpu property

[Lawrence Hunter]

From: Nazar Kazakov <nazar.kazakov@codethink.co.uk>

Signed-off-by: Nazar Kazakov <nazar.kazakov@codethink.co.uk>
---
 target/riscv/cpu.c | 12 ++++++++++++
 target/riscv/cpu.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index cc75ca7667..bd34119c75 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -100,6 +100,7 @@ static const struct isa_ext_data isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zkt, true, PRIV_VERSION_1_12_0, ext_zkt),
     ISA_EXT_DATA_ENTRY(zve32f, true, PRIV_VERSION_1_12_0, ext_zve32f),
     ISA_EXT_DATA_ENTRY(zve64f, true, PRIV_VERSION_1_12_0, ext_zve64f),
+    ISA_EXT_DATA_ENTRY(zvkb, true, PRIV_VERSION_1_12_0, ext_zvkb),
     ISA_EXT_DATA_ENTRY(zhinx, true, PRIV_VERSION_1_12_0, ext_zhinx),
     ISA_EXT_DATA_ENTRY(zhinxmin, true, PRIV_VERSION_1_12_0, ext_zhinxmin),
     ISA_EXT_DATA_ENTRY(smaia, true, PRIV_VERSION_1_12_0, ext_smaia),
@@ -792,6 +793,17 @@ static void riscv_cpu_realize(DeviceState *dev, Error 
**errp)
             return;
         }
 
+        /*
+         * In principle zve*{x,d} would also suffice here, were they supported
+         * in qemu
+         */
+        if (cpu->cfg.ext_zvkb &&
+            !(cpu->cfg.ext_zve32f || cpu->cfg.ext_zve64f || cpu->cfg.ext_v)) {
+            error_setg(
+                errp, "Vector crypto extensions require V or Zve* extensions");
+            return;
+        }
+
         /* Set the ISA extensions, checks should have happened above */
         if (cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinx ||
             cpu->cfg.ext_zhinxmin) {
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index f5609b62a2..d4824ad0bb 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -461,6 +461,7 @@ struct RISCVCPUConfig {
     bool ext_zhinxmin;
     bool ext_zve32f;
     bool ext_zve64f;
+    bool ext_zvkb;
     bool ext_zmmul;
     bool ext_smaia;
     bool ext_ssaia;
-- 
2.39.1