From: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250704142112.1018902-25-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit c48d0471beb0cb197efda0b2be3fa75b4628a673)
(this change itself is a no-op for 10.0.x but requires for subsequent changes)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index a8177c6c2e..28342d6efc 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1125,6 +1125,7 @@ struct ArchCPU {
 
     /* Used to set the maximum vector length the cpu will support.  */
     uint32_t sve_max_vq;
+    uint32_t sme_max_vq;
 
 #ifdef CONFIG_USER_ONLY
     /* Used to set the default vector length at process start. */
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 8188ede5cc..4633c86e93 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -337,6 +337,7 @@ void arm_cpu_sme_finalize(ARMCPU *cpu, Error **errp)
     }
 
     cpu->sme_vq.map = vq_map;
+    cpu->sme_max_vq = 32 - clz32(vq_map);
 }
 
 static bool cpu_arm_get_sme(Object *obj, Error **errp)
-- 
2.47.3