linux-kernel - Re: [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect the current default size of atomic pool

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]

Message-ID: <31e002fd-e796-06a0-4a21-1dc02411d8b7@oracle.com>
Date:   Mon, 6 Dec 2021 21:53:03 -0600
From:   John Donnelly <John.p.donnelly@...cle.com>
To:     Baoquan He <bhe@...hat.com>, linux-kernel@...r.kernel.org
Cc:     linux-mm@...ck.org, akpm@...ux-foundation.org, hch@....de,
        robin.murphy@....com, cl@...ux.com, penberg@...nel.org,
        rientjes@...gle.com, iamjoonsoo.kim@....com, vbabka@...e.cz,
        m.szyprowski@...sung.com, kexec@...ts.infradead.org
Subject: Re: [PATCH RESEND v2 1/5] docs: kernel-parameters: Update to reflect
 the current default size of atomic pool

On 12/6/21 9:07 PM, Baoquan He wrote:
> Since commit 1d659236fb43("dma-pool: scale the default DMA coherent pool
> size with memory capacity"), the default size of atomic pool has been
> changed to take by scaling with system memory capacity. So update the
> document in kerenl-parameter.txt accordingly.
> 
> Signed-off-by: Baoquan He <bhe@...hat.com>
  Reviewed-by: John Donnelly <john.p.donnelly@...cle.com>
  Tested-by:  John Donnelly <john.p.donnelly@...cle.com>


> ---
>   Documentation/admin-guide/kernel-parameters.txt | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 9725c546a0d4..ec4d25e854a8 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -664,7 +664,9 @@
>   
>   	coherent_pool=nn[KMG]	[ARM,KNL]
>   			Sets the size of memory pool for coherent, atomic dma
> -			allocations, by default set to 256K.
> +			allocations. Otherwise the default size will be scaled
> +			with memory capacity, while clamped between 128K and
> +			1 << (PAGE_SHIFT + MAX_ORDER-1).
>   
>   	com20020=	[HW,NET] ARCnet - COM20020 chipset
>   			Format:
>