ARCv2 kernel: Functional caches broken for ARCv2 (in arc64 branch)

foss-for-synopsys-dwc-arc-processors / linux

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ARCv2 kernel: Functional caches broken for ARCv2 (in arc64 branch) #40

Closed vineetgarc closed 3 years ago

vineetgarc commented 3 years ago

When working on implementing functional caches (nSIM) for arc64, found that that is broken for ARCv2. In current mainline kernel, it is OK (with same rootfs etc). So something in ARCv3 branches is regressing ARCv3 cache ops.

vineetgarc commented 3 years ago

Tried bisecting but that didn't yield anything conclusive. Finally debugged the issue with Metaware Debugger and it seems to be an nSIM issue.

vineetgarc commented 3 years ago

This was issue in kernel - same as (https://github.com/foss-for-synopsys-dwc-arc-processors/linux/issues/42)