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riscv: mm: support icache&tlb HW broadcast on xuantie #18

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merged 1 commit into from
Apr 15, 2024

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@cp0613 cp0613 commented Apr 11, 2024

By configuring flush-tlb-range and flush-icache-range in DTS to enable the HW broadcast feature of Xuantie CPU, soft broadcasting is avoided and system performance is improved.

The DTS example as follows:

cpus {
    ...
    flush-icache-range = <1>;
    flush-tlb-range = <1>;
    cpu@0 {
    ...

By configuring `flush-tlb-range` and `flush-icache-range` in DTS to enable the
HW broadcast feature of Xuantie CPU, soft broadcasting is avoided and system
performance is improved.

The DTS example as follows:
```
cpus {
    ...
    flush-icache-range = <1>;
    flush-tlb-range = <1>;
    cpu@0 {
    ...
```

Signed-off-by: Chen Pei <[email protected]>
@guoren83 guoren83 merged commit a08f2e5 into XUANTIE-RV:linux-6.6 Apr 15, 2024
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2 participants