linux-kernel - Re: [PATCH v7 3/7] set_memory: allow set_direct_map_*

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Message-ID: <e754ae3873e02e398e58091d586fe57e105803db.camel@intel.com>
Date:   Mon, 26 Oct 2020 19:01:35 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH v7 3/7] set_memory: allow set_direct_map_*_noflush() for
 multiple pages

On Mon, 2020-10-26 at 10:37 +0200, Mike Rapoport wrote:
> +++ b/arch/x86/mm/pat/set_memory.c
> @@ -2184,14 +2184,14 @@ static int __set_pages_np(struct page *page,
> int numpages)
>         return __change_page_attr_set_clr(&cpa, 0);
>  }
>  
> -int set_direct_map_invalid_noflush(struct page *page)
> +int set_direct_map_invalid_noflush(struct page *page, int numpages)
>  {
> -       return __set_pages_np(page, 1);
> +       return __set_pages_np(page, numpages);
>  }
>  
> -int set_direct_map_default_noflush(struct page *page)
> +int set_direct_map_default_noflush(struct page *page, int numpages)
>  {
> -       return __set_pages_p(page, 1);
> +       return __set_pages_p(page, numpages);
>  }

Somewhat related to your other series, this could result in large NP
pages and trip up hibernate.