From: Ingo Molnar <mingo@elte.hu>
To: Andi Kleen <ak@suse.de>
Cc: "Huang, Ying" <ying.huang@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: Re: early_res and find_e820_area for i386?
Date: Tue, 4 Mar 2008 11:48:53 +0100 [thread overview]
Message-ID: <20080304104853.GA19022@elte.hu> (raw)
In-Reply-To: <200803041141.28404.ak@suse.de>
* Andi Kleen <ak@suse.de> wrote:
> On Tuesday 04 March 2008 04:38:03 Huang, Ying wrote:
>
> > Is it better to implement early_res and find_e820_area on i386? Can
> > we trust E820 table on i386?
>
> The 64bit code is certainly more flexible and cleaner, but also much
> more complicated.. [...]
i disagree, the early_res stuff is still quite unclean, and what we want
do do is to get rid of it, not promote it into 32-bit code ... (The
reason we merged the early_res stuff in 2.6.25 was because it was
certainly cleaner than the horrible open-coded reservations that the
64-bit code did before. So now we at least have a more less visible
enumeration of reservations.)
The correct and clean clean solution is what hpa mentioned: to do
reservations in the e820 space. I think hpa has some code for that
already and we should merge that. Peter?
Ingo
next prev parent reply other threads:[~2008-03-04 10:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-04 3:38 early_res and find_e820_area for i386? Huang, Ying
2008-03-04 4:23 ` H. Peter Anvin
2008-03-04 10:34 ` Ingo Molnar
2008-03-04 10:41 ` Andi Kleen
2008-03-04 10:48 ` Ingo Molnar [this message]
2008-03-04 11:46 ` Andi Kleen
2008-03-04 16:31 ` H. Peter Anvin
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