Re: [PATCH] arm64: Add the arm64.nolse_atomics command line option

Will Deacon
2023-07-10T09:38:27Z

On Mon, Jul 10, 2023 at 01:59:55PM +0800, Maria Yu wrote:
> In order to be able to disable lse_atomic even if cpu
> support it, most likely because of memory controller
> cannot deal with the lse atomic instructions, use a
> new idreg override to deal with it.

This should not be a problem for cacheable memory though, right?

Given that Linux does not issue atomic operations to non-cacheable mappings,
I'm struggling to see why there's a problem here.

Please can you explain the problem that you are trying to solve?

Will