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| author | Alejandro Jimenez <alejandro.j.jimenez@oracle.com> | 2025-06-17 15:04:25 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-07-14 09:16:40 -0400 |
| commit | 67d3077ee403472d45794399e97c9f329242fce9 (patch) | |
| tree | f3a05c48197a178142b896a5c9e461ba3a5548a3 | |
| parent | 123cf4bdd378f746dfa2f5415ba084148dded3e3 (diff) | |
| download | qemu-67d3077ee403472d45794399e97c9f329242fce9.zip qemu-67d3077ee403472d45794399e97c9f329242fce9.tar.gz qemu-67d3077ee403472d45794399e97c9f329242fce9.tar.bz2 | |
amd_iommu: Fix the calculation for Device Table size
Correctly calculate the Device Table size using the format encoded in the
Device Table Base Address Register (MMIO Offset 0000h).
Cc: qemu-stable@nongnu.org
Fixes: d29a09ca6842 ("hw/i386: Introduce AMD IOMMU")
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Message-Id: <20250617150427.20585-7-alejandro.j.jimenez@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/i386/amd_iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c index 6e78047..92f94dc 100644 --- a/hw/i386/amd_iommu.c +++ b/hw/i386/amd_iommu.c @@ -665,8 +665,8 @@ static inline void amdvi_handle_devtab_write(AMDVIState *s) uint64_t val = amdvi_readq(s, AMDVI_MMIO_DEVICE_TABLE); s->devtab = (val & AMDVI_MMIO_DEVTAB_BASE_MASK); - /* set device table length */ - s->devtab_len = ((val & AMDVI_MMIO_DEVTAB_SIZE_MASK) + 1 * + /* set device table length (i.e. number of entries table can hold) */ + s->devtab_len = (((val & AMDVI_MMIO_DEVTAB_SIZE_MASK) + 1) * (AMDVI_MMIO_DEVTAB_SIZE_UNIT / AMDVI_MMIO_DEVTAB_ENTRY_SIZE)); } |