> 2023年2月5日 11:48，Philippe Mathieu-Daudé <[email protected]> 写道：
>
> Hi Jiaxun,
>
> On 2/2/23 14:21, Jiaxun Yang wrote:
>> MIPS virt board is design to utilize existing VirtIO infrastures
>> but also comptitable with MIPS's existing internal simulation tools.
>> It includes virtio-mmio, pcie gpex, flash rom, fw_cfg, goldfish-rtc,
>> and optional goldfish_pic in case MIPS GIC is not present.
>
> Is it worth using the CPS/GIC? Can't we using the goldfish PIC
> regardless CPS availability? Did you run performance comparison?
goldfish_pic don’t have IPI infra so we must reinvent another SMP mechanism :-(
The interrupt performance should be close as the interrupt handling flow is
almost
the same.
Also it can help us prepare for I6400 vGIC support.
Thanks.
- Jiaxun
>
>> It should be able to cooperate with any MIPS CPU cores.
>> Signed-off-by: Jiaxun Yang <[email protected]>
>> ---
>> v1:
>> - Rename to virt board
>> - Convert BIOS flash to ROM
>> - Cleanups
>> ---
>> MAINTAINERS | 7 +
>> configs/devices/mips-softmmu/common.mak | 1 +
>> docs/system/target-mips.rst | 24 +
>> hw/mips/Kconfig | 18 +
>> hw/mips/meson.build | 1 +
>> hw/mips/virt.c | 1015 +++++++++++++++++++++++
>> 6 files changed, 1066 insertions(+)
>> create mode 100644 hw/mips/virt.c
>
