linux-kernel - Re: [PATCH 00/10] KVM: selftests: Add KVM_SET_MEMORY

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Date:   Wed, 15 Apr 2020 17:40:31 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Peter Xu <peterx@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        Wainer dos Santos Moschetta <wainersm@...hat.com>
Subject: Re: [PATCH 00/10] KVM: selftests: Add KVM_SET_MEMORY_REGION tests

On 11/04/20 01:16, Sean Christopherson wrote:
> This is v2-ish of my series to add a "delete" testcase[1], and v5.1 of
> Wainer's series to add a "max" testcase[2].
> 
> I've only tested on x86_64.  I fudged compile testing on !x86_64 by
> inverting the ifdefs, e.g. to squish unused var warnings, but by no means
> is the code actually tested on other architectures.
> 
> I kept Andrew's review for the "max" test.  Other than the 1MB->2MB
> change (see below), it was basically a straight copy-paste of code.
> 
> v1->v2 of delete:
>   - Drop patch to expose primary memslot. [Peter]
>   - Add explicit synchronization to MOVE and DELETE tests. [Peter]
>   - Use list.h instead of open coding linked lists. [Peter]
>   - Clean up the code and separate the testcases into separate functions.
>   - Expand GUEST_ASSERT() to allow passing a value back to the host for
>     printing.
>   - Move to common KVM, with ifdefs to hide the x86_64-only stuff (which
>     is a lot at this point).
>   - Do KVM_SET_NR_MMU_PAGES in the "zero" testcase to get less obscure
>     behavior for KVM_RUN. [Christian]
> 
> v5.1 of max:
>   - Fix a whitespace issue in vm_get_fd(). [checkpatch]
>   - Move the code to set_memory_region_test.  The only _intended_
>     functional change is to create 2MB regions instead of 1MB regions.
>     The only motivation for doing so was to reuse an existing define in
>     set_memory_region_test.
> 
> [1] https://lkml.kernel.org/r/20200320205546.2396-1-sean.j.christopherson@intel.com
> [2] https://lkml.kernel.org/r/20200409220905.26573-1-wainersm@redhat.com
> 
> Sean Christopherson (8):
>   KVM: selftests: Take vcpu pointer instead of id in vm_vcpu_rm()
>   KVM: selftests: Use kernel's list instead of homebrewed replacement
>   KVM: selftests: Add util to delete memory region
>   KVM: selftests: Add GUEST_ASSERT variants to pass values to host
>   KVM: sefltests: Add explicit synchronization to move mem region test
>   KVM: selftests: Add "delete" testcase to set_memory_region_test
>   KVM: selftests: Add "zero" testcase to set_memory_region_test
>   KVM: selftests: Make set_memory_region_test common to all
>     architectures
> 
> Wainer dos Santos Moschetta (2):
>   selftests: kvm: Add vm_get_fd() in kvm_util
>   selftests: kvm: Add testcase for creating max number of memslots
> 
>  tools/testing/selftests/kvm/.gitignore        |   2 +-
>  tools/testing/selftests/kvm/Makefile          |   4 +-
>  .../testing/selftests/kvm/include/kvm_util.h  |  28 +-
>  tools/testing/selftests/kvm/lib/kvm_util.c    | 154 +++----
>  .../selftests/kvm/lib/kvm_util_internal.h     |   8 +-
>  .../selftests/kvm/lib/s390x/processor.c       |   5 +-
>  .../selftests/kvm/set_memory_region_test.c    | 403 ++++++++++++++++++
>  .../kvm/x86_64/set_memory_region_test.c       | 141 ------
>  8 files changed, 520 insertions(+), 225 deletions(-)
>  create mode 100644 tools/testing/selftests/kvm/set_memory_region_test.c
>  delete mode 100644 tools/testing/selftests/kvm/x86_64/set_memory_region_test.c
> 

Queued, thanks -- while keeping the zero region test x86-only.

Paolo