linux-kernel - Re: [PATCH v1 1/3] mm: pass meminit_context to __free_pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 11 Jun 2024 12:41:51 -0700
From: Tim Chen <tim.c.chen@...ux.intel.com>
To: David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc: linux-mm@...ck.org, linux-hyperv@...r.kernel.org, 
 virtualization@...ts.linux.dev, xen-devel@...ts.xenproject.org, 
 kasan-dev@...glegroups.com, Andrew Morton <akpm@...ux-foundation.org>, Mike
 Rapoport <rppt@...nel.org>, Oscar Salvador <osalvador@...e.de>, "K. Y.
 Srinivasan" <kys@...rosoft.com>,  Haiyang Zhang <haiyangz@...rosoft.com>,
 Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,  "Michael
 S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, Xuan Zhuo
 <xuanzhuo@...ux.alibaba.com>, Eugenio Pérez
 <eperezma@...hat.com>, Juergen Gross <jgross@...e.com>, Stefano Stabellini
 <sstabellini@...nel.org>, Oleksandr Tyshchenko
 <oleksandr_tyshchenko@...m.com>,  Alexander Potapenko <glider@...gle.com>,
 Marco Elver <elver@...gle.com>, Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [PATCH v1 1/3] mm: pass meminit_context to __free_pages_core()

On Fri, 2024-06-07 at 11:09 +0200, David Hildenbrand wrote:
> In preparation for further changes, let's teach __free_pages_core()
> about the differences of memory hotplug handling.
> 
> Move the memory hotplug specific handling from generic_online_page() to
> __free_pages_core(), use adjust_managed_page_count() on the memory
> hotplug path, and spell out why memory freed via memblock
> cannot currently use adjust_managed_page_count().
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>
> ---
>  mm/internal.h       |  3 ++-
>  mm/kmsan/init.c     |  2 +-
>  mm/memory_hotplug.c |  9 +--------
>  mm/mm_init.c        |  4 ++--
>  mm/page_alloc.c     | 17 +++++++++++++++--
>  5 files changed, 21 insertions(+), 14 deletions(-)
> 
> diff --git a/mm/internal.h b/mm/internal.h
> index 12e95fdf61e90..3fdee779205ab 100644
> --- a/mm/internal.h
> +++ b/mm/internal.h
> @@ -604,7 +604,8 @@ extern void __putback_isolated_page(struct page *page, unsigned int order,
>  				    int mt);
>  extern void memblock_free_pages(struct page *page, unsigned long pfn,
>  					unsigned int order);
> -extern void __free_pages_core(struct page *page, unsigned int order);
> +extern void __free_pages_core(struct page *page, unsigned int order,
> +		enum meminit_context);

Shouldn't the above be 
		enum meminit_context context);
>  
>  /*
>   * This will have no effect, other than possibly generating a warning, if the

Thanks.

Tim