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| author | Zhenzhong Duan <zhenzhong.duan@intel.com> | 2024-11-04 20:55:34 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2024-11-04 16:03:25 -0500 |
| commit | e70e83f561c45864eeb0945ae0298caa595262d2 (patch) | |
| tree | 88b9b855d4bf94d1aa62bc491e27bfe9e74002b1 | |
| parent | 65fb66980d3a918ebe1e665cf6ae4ceb8dea2db1 (diff) | |
| download | qemu-e70e83f561c45864eeb0945ae0298caa595262d2.zip qemu-e70e83f561c45864eeb0945ae0298caa595262d2.tar.gz qemu-e70e83f561c45864eeb0945ae0298caa595262d2.tar.bz2 | |
intel_iommu: Send IQE event when setting reserved bit in IQT_TAIL
According to VTD spec, Figure 11-22, Invalidation Queue Tail Register,
"When Descriptor Width (DW) field in Invalidation Queue Address Register
(IQA_REG) is Set (256-bit descriptors), hardware treats bit-4 as reserved
and a value of 1 in the bit will result in invalidation queue error."
Current code missed to send IQE event to guest, fix it.
Fixes: c0c1d351849b ("intel_iommu: add 256 bits qi_desc support")
Suggested-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20241104125536.1236118-2-zhenzhong.duan@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/intel_iommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 8612d09..1ecfe47 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2847,6 +2847,7 @@ static void vtd_handle_iqt_write(IntelIOMMUState *s) if (s->iq_dw && (val & VTD_IQT_QT_256_RSV_BIT)) { error_report_once("%s: RSV bit is set: val=0x%"PRIx64, __func__, val); + vtd_handle_inv_queue_error(s); return; } s->iq_tail = VTD_IQT_QT(s->iq_dw, val); |