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-rw-r--r--target/arm/helper.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c
index 0c07ca9837..8c1d8dbce3 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -6461,7 +6461,9 @@ static uint32_t sve_zcr_get_valid_len(ARMCPU *cpu, uint32_t start_len)
{
uint32_t end_len;
- end_len = start_len &= 0xf;
+ start_len = MIN(start_len, ARM_MAX_VQ - 1);
+ end_len = start_len;
+
if (!test_bit(start_len, cpu->sve_vq_map)) {
end_len = find_last_bit(cpu->sve_vq_map, start_len);
assert(end_len < start_len);