linux-kernel - Re: [PATCH v2 05/14] arm: Handle KCOV _

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Message-ID: <20250523111937.f2fqhoshqevdoxcl@snowbird>
Date: Fri, 23 May 2025 06:19:37 -0500
From: Nishanth Menon <nm@...com>
To: Kees Cook <kees@...nel.org>
CC: Arnd Bergmann <arnd@...db.de>, Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
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Subject: Re: [PATCH v2 05/14] arm: Handle KCOV __init vs inline mismatches

On 21:39-20250522, Kees Cook wrote:
> When KCOV is enabled all functions get instrumented, unless
> the __no_sanitize_coverage attribute is used. To prepare for
> __no_sanitize_coverage being applied to __init functions, we have to
> handle differences in how GCC's inline optimizations get resolved. For
> arm this exposed several places where __init annotations were missing
> but ended up being "accidentally correct". Fix these cases and force
> several functions to be inline with __always_inline.
> 
> Signed-off-by: Kees Cook <kees@...nel.org>
> ---
[...]
> diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
> index dfdff186c805..dc52a2197d24 100644
> --- a/drivers/soc/ti/pm33xx.c
> +++ b/drivers/soc/ti/pm33xx.c
> @@ -145,7 +145,7 @@ static int am33xx_do_sram_idle(u32 wfi_flags)
>  	return pm_ops->cpu_suspend(am33xx_do_wfi_sram, wfi_flags);
>  }
>  
> -static int __init am43xx_map_gic(void)
> +static int am43xx_map_gic(void)
>  {
>  	gic_dist_base = ioremap(AM43XX_GIC_DIST_BASE, SZ_4K);
>  
> -- 
> 2.34.1
> 
Acked-by: Nishanth Menon <nm@...com>
-- 
Regards,
Nishanth Menon
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