From: Yinghai Lu <yinghai@kernel.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Miller <davem@davemloft.net>,
Jesse Barnes <jbarnes@virtuousgeek.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw_memmap.c
Date: Sun, 21 Mar 2010 23:09:48 -0700 [thread overview]
Message-ID: <4BA709AC.6070902@kernel.org> (raw)
In-Reply-To: <1269234723.8599.76.camel@pasglop>
On 03/21/2010 10:12 PM, Benjamin Herrenschmidt wrote:
> It -may- well be that adapting x86 to lmb isn't a practical approach,
> but if that was the case, then please justify why with precise technical
> reasons, which we can discuss then in details and make a decision based
> on that.
1. lmb is merging region when you add one new reserved region.
early_res doesn't do that merge. so later it could figure wrong freeing.
<recently add free_early_partial, for per cpu setup only>
2. mem type in e820 map has more than RAM, it include RAM, reserved, ACPI, acpi nvs, and type 9?, and KERN_RESERVED...
3. early res, every range has one name tag.
4. early_res is array based, and it could auto double the array size and copy the old one to new one. and first entry in new array is for array itself.
if want x86 to use lmb, the e820 map and the lmb.memory are duplicated.
also need to have lmb.memory to support more type, otherwise still need to go back to check e820 about e820 reserved etc.
Thanks
Yinghai
next prev parent reply other threads:[~2010-03-22 6:11 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-21 7:13 [PATCH 00/20] x86: early_res and irq_desc Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 01/20] x86: add find_e820_area_node Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 02/20] x86: add get_centaur_ram_top Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 03/20] x86: make e820 to be static Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 04/20] x86: use wake_system_ram_range instead of e820_any_mapped in agp path Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 05/20] x86: make e820 to be initdata Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw_memmap.c Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-22 2:37 ` Benjamin Herrenschmidt
2010-03-22 2:46 ` Questions about SMP bootup control Zhu, Yijun (NSN - CN/Beijing)
2010-03-22 2:46 ` Zhu, Yijun (NSN - CN/Beijing)
2010-03-22 3:29 ` Andi Kleen
2010-03-22 7:45 ` Zhu, Yijun (NSN - CN/Beijing)
2010-03-22 3:56 ` [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw_memmap.c Yinghai Lu
2010-03-22 4:00 ` David Miller
2010-03-22 4:28 ` Yinghai Lu
2010-03-22 4:33 ` David Miller
2010-03-22 9:28 ` Ingo Molnar
2010-03-22 9:28 ` Ingo Molnar
2010-03-22 11:30 ` Paul Mackerras
2010-03-22 13:05 ` Ingo Molnar
2010-03-22 13:05 ` Ingo Molnar
2010-03-22 21:04 ` Benjamin Herrenschmidt
2010-03-22 21:20 ` Ingo Molnar
2010-03-22 21:52 ` Benjamin Herrenschmidt
2010-03-22 22:14 ` Yinghai Lu
2010-03-22 18:18 ` [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw_memmap.cy Thomas Gleixner
2010-03-22 19:37 ` Ingo Molnar
2010-03-22 20:07 ` Yinghai Lu
2010-03-22 21:08 ` Benjamin Herrenschmidt
2010-03-22 22:09 ` Thomas Gleixner
2010-03-22 22:25 ` Yinghai Lu
2010-03-22 22:53 ` Thomas Gleixner
2010-03-22 23:41 ` Yinghai Lu
2010-03-23 0:45 ` Thomas Gleixner
2010-03-23 1:04 ` Yinghai Lu
2010-03-23 1:36 ` Thomas Gleixner
2010-03-23 6:01 ` Yinghai Lu
2010-03-23 8:02 ` Ingo Molnar
2010-03-23 9:02 ` Yinghai Lu
2010-03-23 9:48 ` Ingo Molnar
2010-03-24 4:29 ` Benjamin Herrenschmidt
2010-03-24 4:44 ` Benjamin Herrenschmidt
2010-03-24 5:54 ` Yinghai Lu
2010-03-24 7:43 ` Benjamin Herrenschmidt
2010-03-24 18:37 ` Yinghai Lu
2010-03-24 9:00 ` Ingo Molnar
2010-03-24 9:32 ` Benjamin Herrenschmidt
2010-03-24 4:24 ` Benjamin Herrenschmidt
2010-03-24 6:05 ` Yinghai Lu
2010-03-22 20:47 ` [PATCH 06/20] early_res: seperate common memmap func from e820.c to fw_memmap.c Benjamin Herrenschmidt
2010-03-22 20:57 ` Ingo Molnar
2010-03-22 21:54 ` Benjamin Herrenschmidt
2010-03-23 8:53 ` Geert Uytterhoeven
2010-03-23 11:16 ` Ingo Molnar
2010-03-24 4:50 ` Benjamin Herrenschmidt
2010-03-24 5:47 ` Kyle Moffett
2010-03-22 21:57 ` Paul Mackerras
2010-03-22 21:07 ` Benjamin Herrenschmidt
2010-03-22 21:07 ` Benjamin Herrenschmidt
2010-03-22 21:01 ` Benjamin Herrenschmidt
2010-03-22 5:12 ` Benjamin Herrenschmidt
2010-03-22 6:09 ` Yinghai Lu [this message]
2010-03-22 7:05 ` Eric W. Biederman
2010-03-21 7:13 ` [PATCH 07/20] irq: move some interrupt arch_* functions into struct irq_chip Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 08/20] x86: fix out of order of gsi - full Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 09/20] x86: set nr_irqs_gsi only in probe_nr_irqs_gsi Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 10/20] x86: kill smpboot_hooks.h Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 11/20] x86: use vector_desc instead of vector_irq Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 12/20] genericirq: change ack/mask in irq_chip to take irq_desc instead of irq -- x86 and core Yinghai Lu
2010-03-21 7:13 ` [PATCH 13/20] genericirq: change ack/mask in irq_chip to take irq_desc instead of irq -- other arch Yinghai Lu
2010-03-21 7:13 ` [PATCH 14/20] genericirq: add set_irq_desc_chip/data Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 15/20] x86/iommu/dmar: update iommu/inter_remapping to use desc Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 16/20] x86: use num_processors for possible cpus Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 17/20] x86: make 32bit apic flat to physflat switch like 64bit Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 18/20] x86: remove arch_probe_nr_irqs Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 19/20] x86/pci: ioh new version read all at same time Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-22 16:16 ` Jesse Barnes
2010-03-22 16:16 ` Jesse Barnes
2010-03-22 19:32 ` Yinghai Lu
2010-03-22 19:32 ` Yinghai Lu
2010-03-21 7:13 ` [PATCH 20/20] x86/pci: add mmconf range into e820 for when it is from MSR with amd faml0h Yinghai Lu
2010-03-21 7:13 ` Yinghai Lu
2010-03-22 2:35 ` [PATCH 00/20] x86: early_res and irq_desc Benjamin Herrenschmidt
2010-03-22 3:26 ` Yinghai Lu
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