Re: [PATCHv4 10/10] arm64: Add support for CONFIG_DEBUG_VIRTUAL

From: Mark Rutland
Date: Tue Dec 06 2016 - 13:59:16 EST


On Tue, Nov 29, 2016 at 10:55:29AM -0800, Laura Abbott wrote:
>
> + WARN(!__is_lm_address(x),
> + "virt_to_phys used for non-linear address :%pK\n", (void *)x);

Nit: s/ :/: /

It might be worth adding %pS too; i.e.

WARN(!__is_lm_address(x),
"virt_to_phys used for non-linear address: %pK (%pS)\n",
(void *)x, (void *)x);

... that way we might get a better idea before we have to resort to
grepping objdump output.

Other than that this looks good to me. This builds cleanly with and
without DEBUG_VIRTUAL enabled, and boots happily with DEBUG_VIRTUAL
disabled.

With both DEBUG_VIRTUAL and KASAN, I'm hitting a sea of warnings from
kasan_init at boot time, but I don't think that's a problem with this
patch as such, so FWIW:

Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx>
Tested-by: Mark Rutland <mark.rutland@xxxxxxx>

Thanks,
Mark.