From: Konrad Rzeszutek Wilk <konrad@darnok.org>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
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: Mon, 19 Dec 2016 08:38:19 -0500 [thread overview]
Message-ID: <20161219133817.GA4358@localhost.localdomain> (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:
> On architectures like arm64, swiotlb is tied intimately to the core
> architecture DMA support. In addition, ZONE_DMA cannot be disabled.
>
> To aid debugging and catch devices not supporting DMA to memory outside
> the 32-bit address space, add a kernel command line option
> "swiotlb=noforce", which disables the use of bounce buffers.
> If specified, trying to map memory that cannot be used with DMA will
> fail, and a rate-limited warning will be printed.
>
> Note that io_tlb_nslabs is set to 1, which is the minimal supported
> value.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
What is this based on? I can't apply it on my latest that I had
sent to Linus?
Could you rebase this one please on:
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git stable/for-linus-4.9
Thanks?
Or if alternatively that does not - then please rebase it on
b5cab0da75c292ffa0fbd68dd2c820066b2842de
Thanks!
next prev parent reply other threads:[~2016-12-19 13:38 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 [this message]
2016-12-19 13:57 ` Geert Uytterhoeven
2016-12-19 14:31 ` Konrad Rzeszutek Wilk
2017-01-04 18:00 ` Catalin Marinas
2016-12-19 13:31 ` [PATCH v2 0/3] " Konrad Rzeszutek Wilk
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