1. 21 May, 2018 1 commit
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  3. 16 May, 2018 7 commits
  4. 15 May, 2018 1 commit
    • Varun Wadekar's avatar
      Workaround for CVE-2017-5715 on NVIDIA Denver CPUs · b0301467
      Varun Wadekar authored
      
      
      Flush the indirect branch predictor and RSB on entry to EL3 by issuing
      a newly added instruction for Denver CPUs. Support for this operation
      can be determined by comparing bits 19:16 of ID_AFR0_EL1 with 0b0001.
      
      To achieve this without performing any branch instruction, a per-cpu
      vbar is installed which executes the workaround and then branches off
      to the corresponding vector entry in the main vector table. A side
      effect of this change is that the main vbar is configured before any
      reset handling. This is to allow the per-cpu reset function to override
      the vbar setting.
      
      Change-Id: Ief493cd85935bab3cfee0397e856db5101bc8011
      Signed-off-by: default avatarVarun Wadekar <vwadekar@nvidia.com>
      b0301467