Re: [PATCH v5 6/6] soc: renesas: Add L2 cache management for RZ/Five SoC

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On Thu, 15 Dec 2022 23:02:58 PST (-0800), Christoph Hellwig wrote:
On Thu, Dec 15, 2022 at 01:40:30PM -0800, Palmer Dabbelt wrote:
Given that we already moved the SiFive one out it seems sane to just start
with the rest in drivers/soc/$VENDOR.  Looks like it was Christoph's idea to
do the move, so I'm adding him in case he's got an opinion (and also the SOC
alias, as that seems generally relevant).

Well, it isn't an integral architecture feature, so it doesn't really
beloing into arch.  Even the irqchip and timer drivers that are more
less architectural are in drivers/ as they aren't really core
architecture code.

That makes sense to me, it just looks like the SiFive ccache is the only one that's in drivers/soc/$VENDOR, the rest are in arch. It looks like mostly older ports that have vendor-specific cache files in arch (ie, arm has it but arm64 doesn't). Maybe that's just because the newer architectures sorted out standard ISA interfaces for these and thus don't need the vendor-specific bits? I think we're likely to end up with quite a few of these vendor-specific cache management schemes on RISC-V.

I'm always happy to keep stuff out of arch/riscv, though. So maybe we just buck the trend here and stick to drivers/soc/$VENDOR like we did for the first one?



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