Re: [PATCH v14 3/7] crash: add generic infrastructure for crash hotplug support

Borislav Petkov
2022-12-07T10:16:12Z

On Wed, Nov 16, 2022 at 04:46:39PM -0500, Eric DeVolder wrote:
> +#ifndef arch_map_crash_pages
> +/*
> + * NOTE: The addresses and sizes passed to this routine have
> + * already been fully aligned on page boundaries. There is no
> + * need for massaging the address or size.
> + */
> +static inline void *arch_map_crash_pages(unsigned long paddr,
> + unsigned long size)
> +{
> + if (size > 0)
> + return kmap_local_page(pfn_to_page(paddr >> PAGE_SHIFT));
> + else
> + return NULL;
> +}
> +#endif
> +
> +#ifndef arch_unmap_crash_pages
> +static inline void arch_unmap_crash_pages(void *ptr)
> +{
> + if (ptr)
> + kunmap_local(ptr);
> +}
> +#endif

Why is that function still here and why aren't you calling
kmap_local_page() simply?

--
Regards/Gruss,
Boris.