Re: [PATCH] [v2] x86: coco: replace static const cc_mask with a function

[Kirill A. Shutemov]

On Mon, Mar 10, 2025 at 02:10:59PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> When extra warnings are enabled, the cc_mask definition in asm/coco.h
> causes a build failure with gcc:
> 
> arch/x86/include/asm/coco.h:28:18: error: 'cc_mask' defined but not used [-Werror=unused-const-variable=]
>    28 | static const u64 cc_mask = 0;
> 
> Add a cc_get_mask() function mirroring cc_set_mask() for the one
> user of the variable outside of the coco implementation.
> 
> Fixes: a0a8d15a798b ("x86/tdx: Preserve shared bit on mprotect()")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> --
> v2: use an inline helper instead of a __maybe_unused annotaiton.

Reviewed-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>

-- 
  Kiryl Shutsemau / Kirill A. Shutemov