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-rw-r--r--hw/arm/virt-acpi-build.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index aa02d8d74e..bf9c0bc2f4 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -560,8 +560,8 @@ build_mcfg(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
/* Only a single allocation so no need to play with segments */
mcfg->allocation[0].pci_segment = cpu_to_le16(0);
mcfg->allocation[0].start_bus_number = 0;
- mcfg->allocation[0].end_bus_number = (memmap[ecam_id].size
- / PCIE_MMCFG_SIZE_MIN) - 1;
+ mcfg->allocation[0].end_bus_number =
+ PCIE_MMCFG_BUS(memmap[ecam_id].size - 1);
build_header(linker, table_data, (void *)(table_data->data + mcfg_start),
"MCFG", table_data->len - mcfg_start, 1, NULL, NULL);