From: geoff@infradead.org (Geoff Levand)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v1] Arm64: introduce __hyp_func_call
Date: Tue, 02 Sep 2014 09:18:34 -0700 [thread overview]
Message-ID: <1409674714.21254.115.camel@smoke> (raw)
In-Reply-To: <1409668765-25567-1-git-send-email-achandran@mvista.com>
Hi Arun,
On Tue, 2014-09-02 at 20:09 +0530, Arun Chandran wrote:
> This adds a mechanism to __hyp_stub_vectors to allow a hypercall to
> call a function at EL2. It is needed for users who want to
> run a part of code with EL2 permissions. The current usecase is for
> KVM and kexec.
>
> For kexec we need to move the final CPU up to the mode it started
> in before we branch to the new kernel. If we don't do that
I certainly appreciate you trying to help with the kexec work, but I
already have a patch that does something similar to this in my kexec
series [1].
Also, I think we need to consider this change in the context of the
entire solution around how we handle exception level and kexec + KVM.
I'm now working through the details of that, and when I have something I
think is acceptable I'll post the kexec series for review.
[1] https://git.linaro.org/people/geoff.levand/linux-kexec.git
-Geoff
prev parent reply other threads:[~2014-09-02 16:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 14:39 [RFC PATCH v1] Arm64: introduce __hyp_func_call Arun Chandran
2014-09-02 16:18 ` Geoff Levand [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=1409674714.21254.115.camel@smoke \
--to=geoff@infradead.org \
--cc=linux-arm-kernel@lists.infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox