diff options
Diffstat (limited to 'hw/intc/arm_gicv3_dist.c')
| -rw-r--r-- | hw/intc/arm_gicv3_dist.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/hw/intc/arm_gicv3_dist.c b/hw/intc/arm_gicv3_dist.c index 3ea3dd0d40..93fe936862 100644 --- a/hw/intc/arm_gicv3_dist.c +++ b/hw/intc/arm_gicv3_dist.c @@ -817,6 +817,13 @@ MemTxResult gicv3_dist_read(void *opaque, hwaddr offset, uint64_t *data, "%s: invalid guest read at offset " TARGET_FMT_plx "size %u\n", __func__, offset, size); trace_gicv3_dist_badread(offset, size, attrs.secure); + /* The spec requires that reserved registers are RAZ/WI; + * so use MEMTX_ERROR returns from leaf functions as a way to + * trigger the guest-error logging but don't return it to + * the caller, or we'll cause a spurious guest data abort. + */ + r = MEMTX_OK; + *data = 0; } else { trace_gicv3_dist_read(offset, *data, size, attrs.secure); } @@ -852,6 +859,12 @@ MemTxResult gicv3_dist_write(void *opaque, hwaddr offset, uint64_t data, "%s: invalid guest write at offset " TARGET_FMT_plx "size %u\n", __func__, offset, size); trace_gicv3_dist_badwrite(offset, data, size, attrs.secure); + /* The spec requires that reserved registers are RAZ/WI; + * so use MEMTX_ERROR returns from leaf functions as a way to + * trigger the guest-error logging but don't return it to + * the caller, or we'll cause a spurious guest data abort. + */ + r = MEMTX_OK; } else { trace_gicv3_dist_write(offset, data, size, attrs.secure); } |