diff options
Diffstat (limited to 'hw/i386/intel_iommu.c')
| -rw-r--r-- | hw/i386/intel_iommu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 9a768f0b44..16d2885fcc 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2947,7 +2947,9 @@ static uint64_t vtd_mem_read(void *opaque, hwaddr addr, unsigned size) /* Invalidation Queue Address Register, 64-bit */ case DMAR_IQA_REG: - val = s->iq | (vtd_get_quad(s, DMAR_IQA_REG) & VTD_IQA_QS); + val = s->iq | + (vtd_get_quad(s, DMAR_IQA_REG) & + (VTD_IQA_QS | VTD_IQA_DW_MASK)); if (size == 4) { val = val & ((1ULL << 32) - 1); } |