RE: [PATCH v2] EDAC, mellanox: Add ECC support for BlueField DDR4

[Junhan Zhou]

> > +config EDAC_BLUEFIELD
> > +	tristate "Mellanox BlueField Memory ECC"
> > +	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) ||
> COMPILE_TEST
> 
> Hi,
> 
> While I am in favor of using COMPILE_TEST whenever possible, I don't see
> how that is possible here if:
> 
> # MELLANOX_PLATFORM is not set
> # ARM64 is not set
> # ACPI is not set
> COMPILE_TEST=y
> 
> Can you please explain?
> 
> Thanks.
> 
> ~Randy

Good point. I tried compiling it against the x86 architecture and it fails because it can't find the definition for arm_smccc_smc(). But it would compile for the ARM64 architecture with both ACPI and MELLANOX _PLATFORM not set, so I'll change it to ARM64 && ((MELLANOX_PLATFORM && ACPI) || COMPILE_TEST) instead.
The dependency on ACPI is because our BlueField SoC firmware only uses ACPI to pass the device mappings, and MELLANOX_PLATFORM because this device is only seen on the Mellanox BlueField SoC so it would be pointless to be used elsewhere, but these doesn't prevent it from being compiled.

-Junhan