From: "Jon Mason" <jdmason@kudzu.us>
To: meta-arm@lists.yoctoproject.org
Subject: Re: [meta-arm] [PATCH] foundation: disable Scalable Vector Extension (SVE)
Date: Thu, 19 Mar 2020 16:33:39 -0400 [thread overview]
Message-ID: <20200319203338.GD27467@kudzu.us> (raw)
In-Reply-To: <6540BF0E-DAF6-4BEE-AA99-AC6FBE4D96AE@arm.com>
On Thu, Mar 19, 2020 at 08:02:43AM +0000, Bertrand Marquis wrote:
>
>
> On 18 Mar 2020, at 12:01, Rahul Singh via Lists.Yoctoproject.Org<http://Lists.Yoctoproject.Org> <rahul.singh=arm.com@lists.yoctoproject.org<mailto:rahul.singh=arm.com@lists.yoctoproject.org>> wrote:
>
> When foundation platform is booted with SVE enabled in linux
> kernel and with Xen hypervisor, linux kernel is stopped by a
> trap catched by Xen during early boot as Xen is configuring
> the coprocessor to trap access to SVE to EL2.Disabling the SVE
> in foundation to boot the guest and host.
Applied to the master branch of meta-arm.
Thanks,
Jon
>
> Change-Id: I862540a46686f1fb5343a3143da61db6073bb1d3
> Signed-off-by: Rahul Singh <rahul.singh@arm.com<mailto:rahul.singh@arm.com>>
> ---
> .../recipes-devtools/fvp-common/files/start-foundation-armv8.sh | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/meta-arm-bsp/recipes-devtools/fvp-common/files/start-foundation-armv8.sh b/meta-arm-bsp/recipes-devtools/fvp-common/files/start-foundation-armv8.sh
> index 1df4fd8..e014124 100755
> --- a/meta-arm-bsp/recipes-devtools/fvp-common/files/start-foundation-armv8.sh
> +++ b/meta-arm-bsp/recipes-devtools/fvp-common/files/start-foundation-armv8.sh
> @@ -41,9 +41,11 @@ FOUNDATION_PLAT_EXE="Foundation_Platform"
>
> # Foundation Platform arguments
> # 4 cores
> +# Disable Scalable Vector Extension (SVE)
> # gicv3 emulation (required for hardware virtualisation)
> FOUNDATION_PLAT_ARGS=" \
> --cores=4 \
> + --no-sve \
> --gicv3"
>
> # Foundation Platform user arguments
> --
> 2.17.1
>
>
> Reviewed-by: Bertrand Marquis <bertrand.marquis@arm.com<mailto:bertrand.marquis@arm.com>>
>
>
prev parent reply other threads:[~2020-03-19 20:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 12:01 [PATCH] foundation: disable Scalable Vector Extension (SVE) Rahul Singh
2020-03-19 8:02 ` [meta-arm] " Bertrand Marquis
2020-03-19 20:33 ` Jon Mason [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200319203338.GD27467@kudzu.us \
--to=jdmason@kudzu.us \
--cc=meta-arm@lists.yoctoproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.