Re: [PATCH] arm64/signal: Silence spurious sparse warning storing GCSPR_EL0

[Mark Brown]

On Tue, Dec 10, 2024 at 02:17:58PM +0000, Catalin Marinas wrote:
> On Tue, Dec 10, 2024 at 12:42:53AM +0000, Mark Brown wrote:

> > -	write_sysreg_s(gcspr_el0 + 1, SYS_GCSPR_EL0);
> > +	write_sysreg_s((unsigned long)(gcspr_el0 + 1), SYS_GCSPR_EL0);

> Would we now get a warning here?

No, like the changelog mentions converting to an unsigned long is
regarded by sparse as a (the AFAICT) valid way of discarding the
__userness of a pointer so it's that change that silences the warning.
It does the right thing with whatever sparse I have here.

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