From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] arm/mm: L2CC shared mutex with ARM TZ
Date: Wed, 14 Nov 2012 10:50:49 +0000 [thread overview]
Message-ID: <20121114105049.GI3290@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <0154077FE026E54BB093CA7EB3FD1AE32DB61E4D23@SAFEX1MAIL3.st.com>
On Wed, Nov 14, 2012 at 11:45:42AM +0100, Etienne CARRIERE ST wrote:
> Thanks for notifying. I will look at the recent release to see if our
> architecture complies with Kernel code.
>
> Our mutex implementation is based on 0/1 lock/unlock value in target
> mutex DDR cell.
Right, so we have another bug here: it is incompatible with the current
ARM spinlock implementation - and using it on the same memory location
as a spinlock will corrupt the spinlock.
next prev parent reply other threads:[~2012-11-14 10:50 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 16:08 [PATCH 1/2] arm/mm: L2CC shared mutex with ARM TZ Etienne CARRIERE
2012-11-13 17:07 ` Russell King - ARM Linux
2012-11-14 9:18 ` Etienne CARRIERE ST
2012-11-14 9:51 ` Will Deacon
2012-11-14 10:40 ` Etienne CARRIERE ST
2012-11-14 10:21 ` Russell King - ARM Linux
2012-11-14 10:45 ` Etienne CARRIERE ST
2012-11-14 10:50 ` Russell King - ARM Linux [this message]
2012-11-14 11:02 ` Etienne CARRIERE ST
2012-11-13 17:17 ` Dave Martin
2012-11-13 19:22 ` Abhimanyu Kapur
2012-11-14 10:15 ` Etienne CARRIERE ST
2012-11-14 17:22 ` Catalin Marinas
2012-11-15 13:46 ` Etienne CARRIERE ST
2012-11-15 13:55 ` Catalin Marinas
2012-11-15 14:10 ` Etienne CARRIERE ST
2012-11-14 10:13 ` Etienne CARRIERE ST
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