From: afzal.mohd.ma@gmail.com (afzal mohammed)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: NOMMU: Setup VBAR/Hivecs for secondaries cores
Date: Thu, 21 Dec 2017 09:14:49 +0530 [thread overview]
Message-ID: <20171221034449.GB3944@afzalpc> (raw)
In-Reply-To: <db12818a-509f-2b28-7df0-dd923d956057@arm.com>
Hi,
On Wed, Dec 20, 2017 at 12:22:16PM +0000, Vladimir Murzin wrote:
> >> Additionally, patch is not about Hivec only, but VBAR as well and TBH I
> >> don't follow what is your proposal...
> >
> > i was referring to the fact that vector remapping can't be done in
> > Cortex-R, as security extension is a requisite for this feature, which
> > Cortex-R don't have on ARMv7.
>
> For instance, just think of ARMv7A with 1:1 MMU running in SMP...
Hmm, 3 things,
1. MMU on would not take the path being patched here
2. w/ MMU on, currently it is always Hivecs
3. w/ MMU on & 1:1 mapping & due to pt. 2 above, if there is no memory
@0xFFFF0000, suspect things might go wrong.
afzal
prev parent reply other threads:[~2017-12-21 3:44 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 10:23 [PATCH] ARM: NOMMU: Setup VBAR/Hivecs for secondaries cores Vladimir Murzin
2017-12-19 11:29 ` afzal mohammed
2017-12-19 14:44 ` Vladimir Murzin
2017-12-20 4:52 ` afzal mohammed
2017-12-20 9:55 ` Vladimir Murzin
2017-12-20 11:49 ` afzal mohammed
2017-12-20 12:01 ` afzal mohammed
2017-12-20 12:22 ` Vladimir Murzin
2017-12-21 4:05 ` afzal mohammed
2017-12-20 12:12 ` afzal mohammed
2017-12-20 12:22 ` Vladimir Murzin
2017-12-21 3:44 ` afzal mohammed [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=20171221034449.GB3944@afzalpc \
--to=afzal.mohd.ma@gmail.com \
--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;
as well as URLs for NNTP newsgroup(s).