Re: [PATCH v2] x86/boot/64/clang: Use fixup_pointer() to access '__supported_pte_mask'

[Kirill A. Shutemov]

On Tue, May 08, 2018 at 04:28:29PM +0000, Alexander Potapenko wrote:
> @@ -196,7 +204,8 @@ unsigned long __head __startup_64(unsigned long physaddr,
>  
>  	pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL;
>  	/* Filter out unsupported __PAGE_KERNEL_* bits: */
> -	pmd_entry &= __supported_pte_mask;
> +	mask_ptr = (pteval_t *)fixup_pointer(&__supported_pte_mask, physaddr);

Do we really need the cast here?

-- 
 Kirill A. Shutemov