From mboxrd@z Thu Jan 1 00:00:00 1970 From: R Sricharan Date: Sun, 3 Feb 2013 19:49:01 +0530 Subject: [U-Boot] [PATCH 0/2] ARM: mmu: Set domain permissions to client access In-Reply-To: <20130203151710.062f20ea@lilith> References: <1357668505-30559-1-git-send-email-r.sricharan@ti.com> <20130203151710.062f20ea@lilith> Message-ID: <510E71D5.6080000@ti.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi, On Sunday 03 February 2013 07:47 PM, Albert ARIBAUD wrote: > Hi R Sicharan, Vincent, > > On Tue, 8 Jan 2013 23:38:22 +0530, R Sricharan > wrote: > >> Currently for ARM based cpu's, mmu pagetable attributes are set with >> manager permissions for all 4GB address space. Because of this the >> 'execute never (XN)' permission is never checked on read sensitive >> regions which results in speculative aborts. >> >> This series changes the domain permissions of the full 4GB space >> to client access for OMAP socs. This avoids all the speculative >> aborts that are currently seen on OMAP5 secure devices. >> >> Tested on OMAP5 SDP (HS) soc. >> >> This series depends on [1] the patch sent by >> >> >> [1] http://www.mail-archive.com/u-boot at lists.denx.de/msg102709.html >> >> R Sricharan (2): >> ARM: mmu: Introduce weak dram_bank_setup function >> ARM: mmu: Set domain permissions to client access >> >> arch/arm/cpu/armv7/cache_v7.c | 3 ++ >> arch/arm/cpu/armv7/omap-common/hwinit-common.c | 35 ++++++++++++++++++++++++ >> arch/arm/include/asm/cache.h | 1 + >> arch/arm/include/asm/system.h | 14 ++++++++++ >> arch/arm/lib/cache-cp15.c | 13 ++++++++- >> 5 files changed, 65 insertions(+), 1 deletion(-) > > Does that mean the rest of Vincent's patch set is not needed any more? Except for one patch that i have mentioned, rest are needed http://www.mail-archive.com/u-boot at lists.denx.de/msg102709.html Regards, Sricharan