From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Wang Dongsheng-B40534 <B40534@freescale.com>
Cc: Wood Scott-B07421 <B07421@freescale.com>,
"johannes@sipsolutions.net" <johannes@sipsolutions.net>,
"anton@enomsg.org" <anton@enomsg.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH v2 2/2] powerpc/hibernate: PPC64 fix user threads access to kernel space
Date: Sun, 09 Jun 2013 17:45:46 +1000 [thread overview]
Message-ID: <1370763946.14883.24.camel@pasglop> (raw)
In-Reply-To: <ABB05CD9C9F68C46A5CEDC7F15439259F6D57B@039-SN2MPN1-021.039d.mgd.msft.net>
On Sun, 2013-06-09 at 07:44 +0000, Wang Dongsheng-B40534 wrote:
> So we just need set set_context() in restore_mmu_context().
>
> void restore_mmu_context(struct mm_struct *next) {
> set_context(next->context.id, next->pgd);
> }
We probably also want to flush the TLB, just in case the boot kernel has
left "something" there (though I wouldn't expect it to have run
userspace it's not completely impossible).
Cheers,
Ben.
next prev parent reply other threads:[~2013-06-09 7:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-09 5:22 [PATCH v2 2/2] powerpc/hibernate: PPC64 fix user threads access to kernel space Wang Dongsheng
2013-06-09 6:43 ` Benjamin Herrenschmidt
2013-06-09 7:44 ` Wang Dongsheng-B40534
2013-06-09 7:45 ` Benjamin Herrenschmidt [this message]
2013-06-09 7:57 ` Wang Dongsheng-B40534
2013-06-09 11:31 ` Wang Dongsheng-B40534
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=1370763946.14883.24.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=B07421@freescale.com \
--cc=B40534@freescale.com \
--cc=anton@enomsg.org \
--cc=johannes@sipsolutions.net \
--cc=linuxppc-dev@lists.ozlabs.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.