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SubjectRE: [PATCH] arm64: Explicitly mark 64-bit constant as unsigned long
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From: Olof Johansson
> Sent: 17 November 2018 01:55
...
> -#if (SCTLR_EL2_SET ^ SCTLR_EL2_CLEAR) != 0xffffffffffffffff
> +#if (SCTLR_EL2_SET ^ SCTLR_EL2_CLEAR) != 0xfffffffffffffffful
> #error "Inconsistent SCTLR_EL2 set/clear bits"
> #endif

Wouldn't this be clearer if written:
#if SCTLR_EL2_SET != ~SCTLR_EL2_CLEAR
which then begs the question of why there are separate 'set' and 'clear' masks.

David

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