Re: [PATCH v3 0/2] KVM: SVM: Create separate vmcbs for L1 and L2

[Cathy Avery]

That would be the master branch of 
git://git.kernel.org/pub/scm/virt/kvm/kvm.git where the last commit was 
969df928fee43b4219646a57c7beaccccf2c0635

I was originally working off of the queue branch but there were issues 
with the prior commits passing the various tests.

Cathy

On 11/11/20 4:35 PM, Babu Moger wrote:
> Hi Cathy,
> I was going to test these patches. But it did not apply on my tree.
> Tried on kvm(https://git.kernel.org/pub/scm/virt/kvm/kvm.git) and
> Mainline
> (https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git). What
> is your base tree?
> thanks
> Babu
>
> > -----Original Message-----
> > From: Cathy Avery <cavery@xxxxxxxxxx>
> > Sent: Monday, October 26, 2020 12:42 PM
> > To: linux-kernel@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; pbonzini@xxxxxxxxxx
> > Cc: vkuznets@xxxxxxxxxx; Huang2, Wei <Wei.Huang2@xxxxxxx>;
> > mlevitsk@xxxxxxxxxx; sean.j.christopherson@xxxxxxxxx
> > Subject: [PATCH v3 0/2] KVM: SVM: Create separate vmcbs for L1 and L2
> >
> > svm->vmcb will now point to either a separate vmcb L1 ( not nested ) or L2 vmcb
> > ( nested ).
> >
> > Changes:
> > v2 -> v3
> >   - Added vmcb switching helper.
> >   - svm_set_nested_state always forces to L1 before determining state
> >     to set. This is more like vmx and covers any potential L2 to L2 nested state
> > switch.
> >   - Moved svm->asid tracking to pre_svm_run and added ASID set dirty bit
> >     checking.
> >
> > v1 -> v2
> >   - Removed unnecessary update check of L1 save.cr3 during nested_svm_vmexit.
> >   - Moved vmcb01_pa to svm.
> >   - Removed get_host_vmcb() function.
> >   - Updated vmsave/vmload corresponding vmcb state during L2
> >     enter and exit which fixed the L2 load issue.
> >   - Moved asid workaround to a new patch which adds asid to svm.
> >   - Init previously uninitialized L2 vmcb save.gpat and save.cr4
> >
> > Tested:
> > kvm-unit-tests
> > kvm self tests
> > Loaded fedora nested guest on fedora
> >
> > Cathy Avery (2):
> >    KVM: SVM: Track asid from vcpu_svm
> >    KVM: SVM: Use a separate vmcb for the nested L2 guest
> >
> >   arch/x86/kvm/svm/nested.c | 125 ++++++++++++++++++--------------------
> >   arch/x86/kvm/svm/svm.c    |  58 +++++++++++-------
> >   arch/x86/kvm/svm/svm.h    |  51 +++++-----------
> >   3 files changed, 110 insertions(+), 124 deletions(-)
> >
> > --
> > 2.20.1