b795ea0ba4
All IOMMU accesses are assumed to be user mode unless told otherwise,
i.e. we have a process_id. In case we have a non-user mode leaf PTE
(PTE_U isn't set) and we are running in user mode, we need to throw a
fault.
This also reflects on qos-riscv-iommu tests: the tests always run in
user mode so our PTEs must have PTE_U (bit 0x10) set.
Fixes: 0c54acb824 ("hw/riscv: add RISC-V IOMMU base emulation")
Resolves: https://gitlab.com/qemu-project/qemu/-/work_items/3553
Signed-off-by: Daniel Henrique Barboza <daniel.barboza@oss.qualcomm.com>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
Reviewed-by: Chao Liu <chao.liu.zevorn@gmail.com>
Message-ID: <20260701121111.537654-3-daniel.barboza@oss.qualcomm.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>