From: Tamas K Lengyel <tamas.k.lengyel@gmail.com>
To: Julien Grall <julien@xen.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
minyard@acm.org, Paul Durrant <paul@xen.org>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Julien Grall <jgrall@amazon.com>,
roman@zededa.com, George Dunlap <george.dunlap@citrix.com>,
Jeff Kubascik <jeff.kubascik@dornerworks.com>,
Jan Beulich <jbeulich@suse.com>,
Xen-devel <xen-devel@lists.xenproject.org>,
Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: Re: [PATCH for-4.14 0/3] Remove the 1GB limitation on Rasberry Pi 4
Date: Mon, 18 May 2020 21:08:33 -0600 [thread overview]
Message-ID: <CABfawh=-XVaRxQ+WyM9ZV7jO5hEO=jAWa4m=b_1bQ41NgEB-2A@mail.gmail.com> (raw)
In-Reply-To: <20200518113008.15422-1-julien@xen.org>
On Mon, May 18, 2020 at 5:32 AM Julien Grall <julien@xen.org> wrote:
>
> From: Julien Grall <jgrall@amazon.com>
>
> Hi all,
>
> At the moment, a user who wants to boot Xen on the Raspberry Pi 4 can
> only use the first GB of memory.
>
> This is because several devices cannot DMA above 1GB but Xen doesn't
> necessarily allocate memory for Dom0 below 1GB.
>
> This small series is trying to address the problem by allowing a
> platform to restrict where Dom0 banks are allocated.
>
> This is also a candidate for Xen 4.14. Without it, a user will not be
> able to use all the RAM on the Raspberry Pi 4.
>
> This series has only be slighlty tested. I would appreciate more test on
> the Rasbperry Pi 4 to confirm this removing the restriction.
Hi Julien,
could you post a git branch somewhere? I can try this on my rpi4 that
already runs 4.13.
Thanks,
Tamas
next prev parent reply other threads:[~2020-05-19 3:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 11:30 [PATCH for-4.14 0/3] Remove the 1GB limitation on Rasberry Pi 4 Julien Grall
2020-05-18 11:30 ` [PATCH for-4.14 1/3] xen/arm: Allow a platform to override the DMA width Julien Grall
2020-05-18 18:24 ` Volodymyr Babchuk
2020-05-20 22:01 ` Stefano Stabellini
2020-05-18 11:30 ` [PATCH for-4.14 2/3] xen/arm: Take into account the DMA width when allocating Dom0 memory banks Julien Grall
2020-05-18 20:34 ` Volodymyr Babchuk
2020-05-19 16:55 ` Julien Grall
2020-05-18 11:30 ` [PATCH for-4.14 3/3] xen/arm: plat: Allocate as much as possible memory below 1GB for dom0 for RPI Julien Grall
2020-05-18 20:36 ` Volodymyr Babchuk
2020-05-19 0:02 ` Corey Minyard
2020-05-19 17:07 ` Julien Grall
2020-05-19 17:06 ` Julien Grall
2020-05-19 3:08 ` Tamas K Lengyel [this message]
2020-05-19 17:22 ` [PATCH for-4.14 0/3] Remove the 1GB limitation on Rasberry Pi 4 Julien Grall
2020-05-19 23:43 ` Tamas K Lengyel
2020-05-19 23:48 ` Stefano Stabellini
2020-05-19 23:50 ` Roman Shaposhnik
2020-05-20 2:15 ` Tamas K Lengyel
2020-05-20 2:28 ` Roman Shaposhnik
2020-05-20 3:06 ` Tamas K Lengyel
2020-05-20 22:13 ` Stefano Stabellini
2020-05-21 17:50 ` Julien Grall
2020-05-21 18:12 ` Stefano Stabellini
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