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hw/arm/virt: Check bypass iommu is not set for iommu-map DT property

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default_bus_bypass_iommu tells us whether the bypass_iommu is set
for the default PCIe root bus. Make sure we check that before adding
the "iommu-map" DT property.

Cc: qemu-stable@nongnu.org
Fixes: 6d7a85483a ("hw/arm/virt: Add default_bus_bypass_iommu machine option")
Suggested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Donald Dutile <ddutile@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-id: 20250602114655.42920-1-shameerali.kolothum.thodi@huawei.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Shameer Kolothum 2025-06-02 12:46:55 +01:00 • committed by Peter Maydell
parent d9ce74873a
commit f5ec751ee7
1 changed files with 10 additions and 5 deletions
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15
hw/arm/virt.c
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@ -1487,9 +1487,12 @@ static void create_virtio_iommu_dt_bindings(VirtMachineState *vms)
qemu_fdt_setprop_cell(ms->fdt, node, "phandle", vms->iommu_phandle);
g_free(node);
qemu_fdt_setprop_cells(ms->fdt, vms->pciehb_nodename, "iommu-map",
0x0, vms->iommu_phandle, 0x0, bdf,
bdf + 1, vms->iommu_phandle, bdf + 1, 0xffff - bdf);
if (!vms->default_bus_bypass_iommu) {
qemu_fdt_setprop_cells(ms->fdt, vms->pciehb_nodename, "iommu-map",
0x0, vms->iommu_phandle, 0x0, bdf,
bdf + 1, vms->iommu_phandle, bdf + 1,
0xffff - bdf);
}
}
static void create_pcie(VirtMachineState *vms)
@ -1612,8 +1615,10 @@ static void create_pcie(VirtMachineState *vms)
switch (vms->iommu) {
case VIRT_IOMMU_SMMUV3:
create_smmu(vms, vms->bus);
qemu_fdt_setprop_cells(ms->fdt, nodename, "iommu-map",
0x0, vms->iommu_phandle, 0x0, 0x10000);
if (!vms->default_bus_bypass_iommu) {
qemu_fdt_setprop_cells(ms->fdt, nodename, "iommu-map",
0x0, vms->iommu_phandle, 0x0, 0x10000);
}
break;
default:
g_assert_not_reached();