1. 21 Jun, 2010 1 commit
    • Russell King's avatar
      ARM: Prohibit ioremap() on kernel managed RAM · 309caa9c
      Russell King authored
      ARMv6 and above have a restriction whereby aliasing virtual:physical
      mappings must not have differing memory type and sharability
      attributes.  Strictly, this covers the memory type (strongly ordered,
      device, memory), cache attributes (uncached, write combine, write
      through, write back read alloc, write back write alloc) and the
      shared bit.
      
      However, using ioremap() and its variants on system RAM results in
      mappings which differ in these attributes from the main system RAM
      mapping.  Other architectures which similar restrictions approch this
      problem in the same way - they do not permit ioremap on main system
      RAM.
      
      Make ARM behave in the same way, with a WARN_ON() such that users can
      be traced and an alternative approach found.
      Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      309caa9c
  2. 12 Jun, 2010 1 commit
  3. 11 Jun, 2010 34 commits
  4. 10 Jun, 2010 4 commits