1. 25 Oct, 2019 2 commits
  2. 24 Oct, 2019 1 commit
    • Zenghui Yu's avatar
      irqchip/gic-v3-its: Use the exact ITSList for VMOVP · 84243125
      Zenghui Yu authored
      On a system without Single VMOVP support (say GITS_TYPER.VMOVP == 0),
      we will map vPEs only on ITSs that will actually control interrupts
      for the given VM.  And when moving a vPE, the VMOVP command will be
      issued only for those ITSs.
      
      But when issuing VMOVPs we seemed fail to present the exact ITSList
      to ITSs who are actually included in the synchronization operation.
      The its_list_map we're currently using includes all ITSs in the system,
      even though some of them don't have the corresponding vPE mapping at all.
      
      Introduce get_its_list() to get the per-VM its_list_map, to indicate
      which ITSs have vPE mappings for the given VM, and use this map as
      the expected ITSList when building VMOVP. This is hopefully a performance
      gain not to do some synchronization with those unsuspecting ITSs.
      And initialize the whole command descriptor to zero at beginning, since
      the seq_num and its_list should be RES0 when GITS_TYPER.VMOVP == 1.
      Signed-off-by: default avatarZenghui Yu <yuzenghui@huawei.com>
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      Link: https://lore.kernel.org/r/1571802386-2680-1-git-send-email-yuzenghui@huawei.com
      84243125
  3. 20 Oct, 2019 6 commits
  4. 19 Oct, 2019 31 commits