diff options
Diffstat (limited to 'target/arm/tcg/mte_helper.c')
| -rw-r--r-- | target/arm/tcg/mte_helper.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/target/arm/tcg/mte_helper.c b/target/arm/tcg/mte_helper.c index 70ac876105..ffb8ea1c34 100644 --- a/target/arm/tcg/mte_helper.c +++ b/target/arm/tcg/mte_helper.c @@ -1101,10 +1101,18 @@ uint64_t mte_mops_probe_rev(CPUARMState *env, uint64_t ptr, uint64_t size, uint32_t n; mmu_idx = FIELD_EX32(desc, MTEDESC, MIDX); - /* True probe; this will never fault */ + /* + * True probe; this will never fault. Note that our caller passes + * us a pointer to the end of the region, but allocation_tag_mem_probe() + * wants a pointer to the start. Because we know we don't span a page + * boundary and that allocation_tag_mem_probe() doesn't otherwise care + * about the size, pass in a size of 1 byte. This is simpler than + * adjusting the ptr to point to the start of the region and then having + * to adjust the returned 'mem' to get the end of the tag memory. + */ mem = allocation_tag_mem_probe(env, mmu_idx, ptr, w ? MMU_DATA_STORE : MMU_DATA_LOAD, - size, MMU_DATA_LOAD, true, 0); + 1, MMU_DATA_LOAD, true, 0); if (!mem) { return size; } |