From mboxrd@z Thu Jan 1 00:00:00 1970 From: morten.rasmussen@arm.com (Morten Rasmussen) Date: Mon, 3 Feb 2014 15:03:22 +0000 Subject: about last level cache on big little cpu In-Reply-To: <52EFACDC.7090103@linaro.org> References: <52EFACDC.7090103@linaro.org> Message-ID: <20140203150322.GC18860@e103034-lin> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Feb 03, 2014 at 02:51:08PM +0000, Alex Shi wrote: > Does all the big.LITTLE cpu share the same llc? or it depends on > different vendor's products? No. I don't know of any big.LITTLE implementation that does have a shared last level cache. TC2 has per cluster L2 caches as last level caches, so no cache is shared between the big and little clusters. Morten