From: Catalin Marinas <catalin.marinas@arm.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Jonathan Corbet <corbet@lwn.net>,
Will Deacon <will.deacon@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
David Vrabel <david.vrabel@citrix.com>,
Juergen Gross <jgross@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH v2 3/3] swiotlb: Add swiotlb=noforce debug option
Date: Wed, 4 Jan 2017 18:00:02 +0000 [thread overview]
Message-ID: <20170104180002.GE31066@e104818-lin.cambridge.arm.com> (raw)
In-Reply-To: <1481894922-28828-4-git-send-email-geert+renesas@glider.be>
On Fri, Dec 16, 2016 at 02:28:42PM +0100, Geert Uytterhoeven wrote:
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index 21e2d88637050b7a..24fb691b2da5f78d 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -3811,10 +3811,11 @@
> it if 0 is given (See Documentation/cgroup-v1/memory.txt)
>
> swiotlb= [ARM,IA-64,PPC,MIPS,X86]
> - Format: { <int> | force }
> + Format: { <int> | force | noforce }
> <int> -- Number of I/O TLB slabs
> force -- force using of bounce buffers even if they
> wouldn't be automatically used by the kernel
> + noforce -- Never use bounce buffers (for debugging)
Nitpick (bikeshedding, feel free to ignore): "noforce" looks to me like
the current default behaviour if swiotlb= argument is passed. I would
have preferred "never" or "disable" instead, it has a clearer intent.
--
Catalin
next prev parent reply other threads:[~2017-01-04 18:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-16 13:28 [PATCH v2 0/3] swiotlb: Add swiotlb=noforce debug option Geert Uytterhoeven
2016-12-16 13:28 ` [PATCH v2 1/3] x86, swiotlb: Simplify pci_swiotlb_detect_override() Geert Uytterhoeven
2016-12-16 13:28 ` [PATCH v2 2/3] swiotlb: Convert swiotlb_force from int to enum Geert Uytterhoeven
2017-01-04 17:57 ` Catalin Marinas
2017-01-04 18:25 ` Konrad Rzeszutek Wilk
2016-12-16 13:28 ` [PATCH v2 3/3] swiotlb: Add swiotlb=noforce debug option Geert Uytterhoeven
2016-12-19 13:38 ` Konrad Rzeszutek Wilk
2016-12-19 13:57 ` Geert Uytterhoeven
2016-12-19 14:31 ` Konrad Rzeszutek Wilk
2017-01-04 18:00 ` Catalin Marinas [this message]
2016-12-19 13:31 ` [PATCH v2 0/3] " Konrad Rzeszutek Wilk
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