From: "H. Peter Anvin" <hpa@zytor.com>
To: Daniel Drake <dsd@laptop.org>
Cc: tglx@linutronix.de, mingo@redhat.com, x86@kernel.org,
dilinger@queued.net, linux-kernel@vger.kernel.org,
Borislav Petkov <bp@amd64.org>,
"Roedel, Joerg" <Joerg.Roedel@amd.com>
Subject: Re: [PATCH] OLPC: Add XO-1 suspend/resume support
Date: Tue, 19 Oct 2010 15:11:13 -0700 [thread overview]
Message-ID: <4CBE1781.1050000@zytor.com> (raw)
In-Reply-To: <20101019220159.0DBBE9D401B@zog.reactivated.net>
On 10/19/2010 03:01 PM, Daniel Drake wrote:
> Add code needed for basic suspend/resume of the XO-1 laptop.
>
> swsusp_pg_dir needs to be exposed as it is used by the assembly
> code run in the wakeup path.
>
Okay... this is Yet Another Reason why we need to unify all the bloody
trampoline page tables.
What it comes down to is that there are several users which need a 1:1
mapped pagetable and a chunk of memory < 1 MiB, and they should all be
combined and linked together, and share a single pagetable set that
sticks around.
Borislav has already been doing some of this work:
[PATCH] x86-32, mm: Add an initial page table for core bootstrapping
I thought that patch was already in -tip, but it looks like it's not...
Borislav/Joerg... was there a newer patch or did we just miss the final
version? I remember we talked about this at some length, but it looks
like I dropped the ball (I was on vacation when the above message was
posted.)
-hpa
next prev parent reply other threads:[~2010-10-19 22:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-19 22:01 [PATCH] OLPC: Add XO-1 suspend/resume support Daniel Drake
2010-10-19 22:06 ` Randy Dunlap
2010-10-19 22:11 ` H. Peter Anvin [this message]
2010-10-20 5:47 ` Borislav Petkov
2010-10-20 5:58 ` H. Peter Anvin
2010-10-20 7:05 ` [PATCH -tip/master] x86-32, mm: Add an initial page table for core bootstrapping Borislav Petkov
2010-10-20 21:28 ` [tip:x86/trampoline] " tip-bot for Borislav Petkov
-- strict thread matches above, loose matches on Subject: below --
2010-11-11 15:02 [PATCH] OLPC: Add XO-1 suspend/resume support Daniel Drake
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