1. 02 Oct, 2016 9 commits
  2. 18 Sep, 2016 1 commit
    • James Hogan's avatar
      MIPS: KVM: Check for pfn noslot case · 3b23ff99
      James Hogan authored
      commit ba913e4f upstream.
      
      When mapping a page into the guest we error check using is_error_pfn(),
      however this doesn't detect a value of KVM_PFN_NOSLOT, indicating an
      error HVA for the page. This can only happen on MIPS right now due to
      unusual memslot management (e.g. being moved / removed / resized), or
      with an Enhanced Virtual Memory (EVA) configuration where the default
      KVM_HVA_ERR_* and kvm_is_error_hva() definitions are unsuitable (fixed
      in a later patch). This case will be treated as a pfn of zero, mapping
      the first page of physical memory into the guest.
      
      It would appear the MIPS KVM port wasn't updated prior to being merged
      (in v3.10) to take commit 81c52c56 ("KVM: do not treat noslot pfn as
      a error pfn") into account (merged v3.8), which converted a bunch of
      is_error_pfn() calls to is_error_noslot_pfn(). Switch to using
      is_error_noslot_pfn() instead to catch this case properly.
      
      Fixes: 858dd5d4 ("KVM/MIPS32: MMU/TLB operations for the Guest.")
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Cc: Paolo Bonzini <pbonzini@redhat.com>
      Cc: "Radim Krčmář" <rkrcmar@redhat.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: linux-mips@linux-mips.org
      Cc: kvm@vger.kernel.org
      Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      [james.hogan@imgtec.com: Backport to v4.7.y]
      Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
      Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
      3b23ff99
  3. 17 Sep, 2016 1 commit
  4. 15 Sep, 2016 15 commits
  5. 12 Sep, 2016 14 commits