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target/s390x: Fix VSTL with a large length 

The length is always truncated to 16 bytes. Do not probe more than
that.

Cc: qemu-stable@nongnu.org
Fixes: 0e0a5b49ad ("s390x/tcg: Implement VECTOR STORE WITH LENGTH")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230804235624.263260-1-iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
master
Ilya Leoshkevich 2023-08-05 01:55:33 +02:00 committed by Thomas Huth
parent 6a2ea61518
commit 6db3518ba4
1 changed files with 1 additions and 1 deletions
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2
target/s390x/tcg/vec_helper.c
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@ -193,7 +193,7 @@ void HELPER(vstl)(CPUS390XState *env, const void *v1, uint64_t addr,
uint64_t bytes)
{
/* Probe write access before actually modifying memory */
probe_write_access(env, addr, bytes, GETPC());
probe_write_access(env, addr, MIN(bytes, 16), GETPC());
if (likely(bytes >= 16)) {
cpu_stq_data_ra(env, addr, s390_vec_read_element64(v1, 0), GETPC());