From: Rusty Russell <rusty@rustcorp.com.au>
To: Hugh Dickins <hugh@veritas.com>
Cc: Ingo Molnar <mingo@elte.hu>, Yinghai Lu <yinghai@kernel.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: linux-next: parsing mem=700M broken
Date: Thu, 25 Dec 2008 13:58:12 +1030 [thread overview]
Message-ID: <200812251358.13635.rusty@rustcorp.com.au> (raw)
In-Reply-To: <Pine.LNX.4.64.0812241437230.15556@blonde.anvils>
On Thursday 25 December 2008 01:14:35 Hugh Dickins wrote:
> On Wed, 24 Dec 2008, Rusty Russell wrote:
> > mem= is actually easy, memmap= is harder. This is tested and pushed.
>
> Thanks, that gets my "mem=700M" respected on x86_32 and x86_64.
> But (of course: it's a patch to arch/x86) doesn't help at all on
> ppc64; and I presume other architectures also remain broken...
No, the problem is that early_param() get parsed *earlier* with these
changes. x86 relied on the e820 map already being set up. Most archs
(like powerpc) just set a "memory_limit" and handle it later; this
is in fact how the vast majority of early_param() work.
This cleanup is getting hairier, however we should see it as a chance
to clean some of this code too I guess...
Thanks,
Rusty.
next prev parent reply other threads:[~2008-12-25 3:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-23 3:06 linux-next: parsing mem=700M broken Hugh Dickins
2008-12-23 5:52 ` Yinghai Lu
2008-12-23 14:33 ` Ingo Molnar
2008-12-24 7:38 ` Rusty Russell
2008-12-24 8:09 ` Yinghai Lu
2008-12-24 23:09 ` Yinghai Lu
2008-12-25 11:40 ` Rusty Russell
2008-12-25 22:46 ` Yinghai Lu
2008-12-24 12:30 ` Ingo Oeser
2008-12-25 5:50 ` Rusty Russell
2008-12-24 14:44 ` Hugh Dickins
2008-12-25 3:28 ` Rusty Russell [this message]
2008-12-27 13:12 ` Rusty Russell
2008-12-28 0:43 ` Hugh Dickins
2008-12-28 2:07 ` Yinghai Lu
2009-01-01 3:42 ` Rusty Russell
2008-12-25 12:17 ` [RFC] boot parameter handling cleanup II Rusty Russell
2008-12-25 12:20 ` [RFC PATCH] param: start_kernel_with_args() Rusty Russell
2008-12-27 10:14 ` [RFC] boot parameter handling cleanup II Ingo Molnar
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