From: Alejandro Jimenez <alejandro.j.jime...@oracle.com>
Correctly calculate the Device Table size using the format encoded in the
Device Table Base Address Register (MMIO Offset 0000h).
Cc: qemu-sta...@nongnu.org
Fixes: d29a09ca6842 ("hw/i386: Introduce AMD IOMMU")
Signed-off-by: Alejandro Jimenez <alejandro.j.jime...@oracle.com>
Reviewed-by: Vasant Hegde <vasant.he...@amd.com>
Message-Id: <20250617150427.20585-7-alejandro.j.jime...@oracle.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
(cherry picked from commit 67d3077ee403472d45794399e97c9f329242fce9)
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index 69d69a9b2d..06df344575 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));
}
--
2.47.2
