From: viresh.kumar@st.com (Viresh Kumar) Date: Thu, 29 Mar 2012 16:14:46 +0530 Subject: [PATCH V2 5/7] ARM: SPEAr3xx: Add device-tree support to SPEAr3xx architecture In-Reply-To: <201203290753.04758.arnd@arndb.de> References: <201203281227.32299.arnd@arndb.de> <4F740386.2080509@st.com> <201203290753.04758.arnd@arndb.de> Message-ID: <4F743D1E.9030209@st.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 3/29/2012 1:23 PM, Arnd Bergmann wrote: > That should not really be a concern, you only waste a little bit of > the vmalloc space that you gained recently when ioremap was changed. > Nothing should ever be able to get to those pointers other than by > calling ioremap, so it doesn't hurt to have them mapped, except for > the very unlikely scenario that you get a wild pointer dereference > in the kernel that would otherwise result in an oops. Ok. I will create two 16M mappings for now: PHYSICAL VIRTUAL 0xD0000000 - 0xD1000000 0xFD000000 0xFC000000 - 0xFD000000 0xFC000000 -- viresh