From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm: mm: Don't free prohibited memmap entries
Date: Tue, 6 Apr 2010 23:08:17 +0100 [thread overview]
Message-ID: <20100406220817.GE12831@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1270506861-14461-1-git-send-email-mbohan@codeaurora.org>
On Mon, Apr 05, 2010 at 03:34:21PM -0700, Michael Bohan wrote:
> From: Michael Bohan <mbohan@quicinc.com>
>
> The VM subsystem assumes that there are valid memmap entries to
> the bank end aligned to MAX_ORDER_NR_PAGES. It will try and read
> these page structs, and so we cannot free any memmap entries that
> it may inspect.
1. are you enabling ARCH_HAS_HOLES_MEMORYMODEL ?
2. where does it try to access these page structs without trying
pfn_valid() to check whether a page struct exists first?
next prev parent reply other threads:[~2010-04-06 22:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-05 22:34 [PATCH] arm: mm: Don't free prohibited memmap entries Michael Bohan
2010-04-06 22:08 ` Russell King - ARM Linux [this message]
2010-04-07 0:33 ` Michael Bohan
2010-04-12 21:11 ` Russell King - ARM Linux
2010-04-12 22:31 ` Michael Bohan
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