From: Ralf Baechle <ralf@linux-mips.org>
To: Franck Bui-Huu <vagabon.xyz@gmail.com>
Cc: "tiansm@lemote.com" <tiansm@lemote.com>,
linux-mips@linux-mips.org, Fuxin Zhang <zhangfx@lemote.com>
Subject: Re: [PATCH] cheat for support of more than 256MB memory
Date: Wed, 6 Jun 2007 17:40:18 +0100 [thread overview]
Message-ID: <20070606164018.GA30017@linux-mips.org> (raw)
In-Reply-To: <cda58cb80706052338y461f707fq790e204f55a23cc0@mail.gmail.com>
On Wed, Jun 06, 2007 at 08:38:18AM +0200, Franck Bui-Huu wrote:
> >diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
> >index 4975da0..62ef100 100644
> >--- a/arch/mips/kernel/setup.c
> >+++ b/arch/mips/kernel/setup.c
> >@@ -509,6 +509,14 @@ static void __init resource_init(void)
> > res->end = end;
> >
> > res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
> >+#if defined(CONFIG_LEMOTE_FULONG) && defined(CONFIG_64BIT)
> >+ /* to keep memory continous, we tell system 0x10000000 -
> >0x20000000 is reserved
> >+ * for memory, in fact it is io region, don't occupy it
> >+ *
> >+ * SPARSEMEM?
>
> Definetly yes ! It has been designed for such issue and it should save
> you some memory.
A hole of 256MB size in the memory address map will cost 3.5MB with a 64-bit
kernel. The other reason why I don't like this patch is that it drags
platform specific code into the generic MIPS code.
Ralf
next prev parent reply other threads:[~2007-06-06 16:47 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-06 4:42 Lemote Loongson 2E patch update tiansm
2007-06-06 4:42 ` [PATCH] new files for lemote fulong mini-PC support tiansm
2007-06-06 4:42 ` [PATCH] arch related Makefile update for lemote fulong mini-PC tiansm
2007-06-06 4:42 ` [PATCH] Kconfig update for lemote fulong miniPC tiansm
2007-06-06 4:42 ` [PATCH] TO_PHYS_MASK for loongson2 tiansm
2007-06-06 4:42 ` [PATCH] add MACH_GROUP_LEMOTE & MACH_LEMOTE_FULONG tiansm
2007-06-06 4:42 ` [PATCH] define Hit_Invalidate_I to Index_Invalidate_I for loongson2 tiansm
2007-06-06 4:42 ` [PATCH] add Loongson processor definitions tiansm
2007-06-06 4:42 ` [PATCH] define MODULE_PROC_FAMILY for Loongson2 tiansm
2007-06-06 4:42 ` [PATCH] add serial port definition for lemote fulong tiansm
2007-06-06 4:42 ` [PATCH] make cpu_probe recognize Loongson2 tiansm
2007-06-06 4:42 ` [PATCH] add Loongson support to /proc/cpuinfo tiansm
2007-06-06 4:42 ` [PATCH] cheat for support of more than 256MB memory tiansm
2007-06-06 6:38 ` Franck Bui-Huu
2007-06-06 16:40 ` Ralf Baechle [this message]
2007-06-08 4:47 ` Tian
2007-06-08 7:52 ` Tian
2007-06-08 7:54 ` Tian
2007-06-06 4:42 ` [PATCH] define MODULE_PROC_FAMILY for Loongson2 tiansm
2007-06-06 4:42 ` [PATCH] tlb handling support for Loongson2 processor tiansm
2007-06-06 4:42 ` [PATCH] work around for more than 256MB memory support tiansm
2007-06-06 13:55 ` Lemote Loongson 2E patch update John W. Linville
2007-06-06 16:50 ` Ralf Baechle
2007-06-07 6:05 ` Fuxin Zhang
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