lkml.org 
[lkml]   [2023]   [Sep]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    Subject[PATCH 00/13] KVM: guest_memfd fixes
    From
    Fix a variety of bugs in the guest_memfd series, almost all of which are
    my fault, and add assertions and testcases to detect future regressions.

    The last patch, renaming guest_mem.c to guest_memfd.c, is obviously not a
    bug fix, I included it here so that if we want to go with guest_memfd.c,
    squashing everything will be straightforward.

    Note, the truncate fix and test conflicts with Isaku's series[*]. My
    fix is more correct (knock wood), and my test is slightly more comprehensive
    (though arguably not really all that more interesting).

    Note #2, this is based on kvm-x86/guest_memfd, to which I force-pushed v12.

    Note #3, the patches are organized so that they can be squashed with their
    Fixes, i.e. the splits are more than a bit odd in some places.

    [*] https://lore.kernel.org/all/cover.1695327124.git.isaku.yamahata@intel.com

    Sean Christopherson (13):
    KVM: Assert that mmu_invalidate_in_progress *never* goes negative
    KVM: Actually truncate the inode when doing PUNCH_HOLE for guest_memfd
    KVM: WARN if *any* MMU invalidation sequence doesn't add a range
    KVM: WARN if there are danging MMU invalidations at VM destruction
    KVM: Fix MMU invalidation bookkeeping in guest_memfd
    KVM: Disallow hugepages for incompatible gmem bindings, but let 'em
    succeed
    KVM: x86/mmu: Track PRIVATE impact on hugepage mappings for all
    memslots
    KVM: x86/mmu: Zap shared-only memslots when private attribute changes
    KVM: Always add relevant ranges to invalidation set when changing
    attributes
    KVM: x86/mmu: Drop repeated add() of to-be-invalidated range
    KVM: selftests: Refactor private mem conversions to prep for
    punch_hole test
    KVM: selftests: Add a "pure" PUNCH_HOLE on guest_memfd testcase
    KVM: Rename guest_mem.c to guest_memfd.c

    arch/x86/kvm/mmu/mmu.c | 25 ++--
    .../kvm/x86_64/private_mem_conversions_test.c | 112 ++++++++++++++----
    virt/kvm/Makefile.kvm | 2 +-
    virt/kvm/{guest_mem.c => guest_memfd.c} | 84 +++++++------
    virt/kvm/kvm_main.c | 40 +++++--
    5 files changed, 184 insertions(+), 79 deletions(-)
    rename virt/kvm/{guest_mem.c => guest_memfd.c} (92%)


    base-commit: 7af66fbd6d89b159acc359895449b5940b6e4fdb
    --
    2.42.0.515.g380fc7ccd1-goog

    \
     
     \ /
      Last update: 2023-09-21 23:08    [W:2.503 / U:0.092 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site