1. 29 9月, 2015 33 次提交
  2. 28 9月, 2015 6 次提交
  3. 27 9月, 2015 1 次提交
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      MIPS: Initialise MAARs on secondary CPUs · e060f6ed
      Paul Burton 提交于
      MAARs should be initialised on each CPU (or rather, core) in the system
      in order to achieve consistent behaviour & performance. Previously they
      have only been initialised on the boot CPU which leads to performance
      problems if tasks are later scheduled on a secondary CPU, particularly
      if those tasks make use of unaligned vector accesses where some CPUs
      don't handle any cases in hardware for non-speculative memory regions.
      Fix this by recording the MAAR configuration from the boot CPU and
      applying it to secondary CPUs as part of their bringup.
      Reported-by: NDoug Gilmore <doug.gilmore@imgtec.com>
      Signed-off-by: NPaul Burton <paul.burton@imgtec.com>
      Cc: linux-mips@linux-mips.org
      Cc: Rusty Russell <rusty@rustcorp.com.au>
      Cc: Steven J. Hill <Steven.Hill@imgtec.com>
      Cc: Andrew Bresticker <abrestic@chromium.org>
      Cc: Bjorn Helgaas <bhelgaas@google.com>
      Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
      Cc: linux-kernel@vger.kernel.org
      Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
      Cc: James Hogan <james.hogan@imgtec.com>
      Cc: Ingo Molnar <mingo@kernel.org>
      Cc: Markos Chandras <markos.chandras@imgtec.com>
      Cc: Hemmo Nieminen <hemmo.nieminen@iki.fi>
      Cc: Alex Smith <alex.smith@imgtec.com>
      Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
      Patchwork: https://patchwork.linux-mips.org/patch/11239/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
      e060f6ed
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