Re: [PATCH 00/13] KVM: guest_memfd fixes

Sean Christopherson
2023-09-29T02:22:58Z

On Thu, 21 Sep 2023 13:33:17 -0700, Sean Christopherson wrote:
> 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.
>
> [...]

Applied to kvm-x86 guest_memfd. I'll apply Mike's hugepage fix on top (when it
arrives), will send out a patch to fix the off-by-one reported by Binbin, and
will post a miniseries to clean up KVM_EXIT_MEMORY_FAULT.

[01/13] KVM: Assert that mmu_invalidate_in_progress *never* goes negative
https://github.com/kvm-x86/linux/commit/46c10adeda81
[02/13] KVM: Actually truncate the inode when doing PUNCH_HOLE for guest_memfd
https://github.com/kvm-x86/linux/commit/936144404469
[03/13] KVM: WARN if *any* MMU invalidation sequence doesn't add a range
https://github.com/kvm-x86/linux/commit/1912c5dff3ac
[04/13] KVM: WARN if there are danging MMU invalidations at VM destruction
https://github.com/kvm-x86/linux/commit/37bbf72db864
[05/13] KVM: Fix MMU invalidation bookkeeping in guest_memfd
https://github.com/kvm-x86/linux/commit/b25ab9cae30f
[06/13] KVM: Disallow hugepages for incompatible gmem bindings, but let 'em succeed
https://github.com/kvm-x86/linux/commit/1c297b84f3a4
[07/13] KVM: x86/mmu: Track PRIVATE impact on hugepage mappings for all memslots
https://github.com/kvm-x86/linux/commit/26cf4453d2d9
[08/13] KVM: x86/mmu: Zap shared-only memslots when private attribute changes
https://github.com/kvm-x86/linux/commit/fb6f779719ca
[09/13] KVM: Always add relevant ranges to invalidation set when changing attributes
https://github.com/kvm-x86/linux/commit/69c7916df569
[10/13] KVM: x86/mmu: Drop repeated add() of to-be-invalidated range
https://github.com/kvm-x86/linux/commit/e6b1a6922470
[11/13] KVM: selftests: Refactor private mem conversions to prep for punch_hole test
https://github.com/kvm-x86/linux/commit/5782107f5d2b
[12/13] KVM: selftests: Add a "pure" PUNCH_HOLE on guest_memfd testcase
https://github.com/kvm-x86/linux/commit/848d5faa2099
[13/13] KVM: Rename guest_mem.c to guest_memfd.c
https://github.com/kvm-x86/linux/commit/6a92dc57b0e6

--