From: Tejun Heo <tj@kernel.org>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>,
grygorii.strashko@ti.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
yinghai@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC 06/23] mm/memblock: Add memblock early memory allocation apis
Date: Sun, 13 Oct 2013 14:42:12 -0400 [thread overview]
Message-ID: <20131013184212.GA18075@htj.dyndns.org> (raw)
In-Reply-To: <20131013180058.GG25034@n2100.arm.linux.org.uk>
On Sun, Oct 13, 2013 at 07:00:59PM +0100, Russell King - ARM Linux wrote:
> On Sun, Oct 13, 2013 at 01:56:48PM -0400, Tejun Heo wrote:
> > Hello,
> >
> > On Sat, Oct 12, 2013 at 05:58:49PM -0400, Santosh Shilimkar wrote:
> > > Introduce memblock early memory allocation APIs which allow to support
> > > LPAE extension on 32 bits archs. More over, this is the next step
> >
> > LPAE isn't something people outside arm circle would understand.
> > Let's stick to highmem.
>
> LPAE != highmem. Two totally different things, unless you believe
> system memory always starts at physical address zero, which is very
> far from the case on the majority of ARM platforms.
>
> So replacing LPAE with "highmem" is pure misrepresentation and is
> inaccurate. PAE might be a better term, and is also the x86 term
> for this.
Ah, right, forgot about the base address. Let's please spell out the
requirements then. Briefly explaining both aspects (non-zero base
addr & highmem) and why the existing bootmem based interfaced can't
serve them would be helpful to later readers.
Thanks.
--
tejun
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next prev parent reply other threads:[~2013-10-13 18:42 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-12 21:58 [RFC 00/23] mm: Use memblock interface instead of bootmem Santosh Shilimkar
2013-10-12 21:58 ` [RFC 01/23] mm/bootmem: remove duplicated declaration of __free_pages_bootmem() Santosh Shilimkar
2013-10-12 21:58 ` [RFC 02/23] mm/block: remove unnecessary inclusion of bootmem.h Santosh Shilimkar
2013-10-12 21:58 ` [RFC 03/23] mm/memory_hotplug: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 04/23] mm/staging: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 05/23] mm/char: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 06/23] mm/memblock: Add memblock early memory allocation apis Santosh Shilimkar
2013-10-13 17:56 ` Tejun Heo
2013-10-13 18:00 ` Russell King - ARM Linux
2013-10-13 18:42 ` Tejun Heo [this message]
2013-10-14 13:48 ` Santosh Shilimkar
2013-10-14 14:39 ` Santosh Shilimkar
2013-10-14 14:58 ` Tejun Heo
2013-10-14 15:03 ` Santosh Shilimkar
2013-10-12 21:58 ` [RFC 07/23] mm/memblock: debug: correct displaying of upper memory boundary Santosh Shilimkar
2013-10-13 18:02 ` Tejun Heo
2013-10-14 14:41 ` Santosh Shilimkar
2013-10-12 21:58 ` [RFC 08/23] mm/memblock: debug: don't free reserved array if !ARCH_DISCARD_MEMBLOCK Santosh Shilimkar
2013-10-13 19:51 ` Tejun Heo
2013-10-14 14:41 ` Santosh Shilimkar
2013-10-12 21:58 ` [RFC 09/23] mm/init: Use memblock apis for early memory allocations Santosh Shilimkar
2013-10-13 19:54 ` Tejun Heo
2013-10-14 14:43 ` Santosh Shilimkar
2013-10-12 21:58 ` [RFC 10/23] mm/printk: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 11/23] mm/page_alloc: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 12/23] mm/power: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 13/23] mm/lib: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 14/23] " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 15/23] mm/sparse: " Santosh Shilimkar
2013-10-12 21:58 ` [RFC 16/23] mm/hugetlb: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 17/23] mm/page_cgroup: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 18/23] mm/percpu: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 19/23] mm/memory_hotplug: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 20/23] mm/firmware: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 21/23] mm/ARM: kernel: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 22/23] mm/ARM: mm: " Santosh Shilimkar
2013-10-12 21:59 ` [RFC 23/23] mm/ARM: OMAP: " Santosh Shilimkar
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