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From:   Maxim Levitsky <mlevitsk@redhat.com>
To:     kvm@vger.kernel.org
Cc:     Vitaly Kuznetsov <vkuznets@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, Joerg Roedel <joro@8bytes.org>,
        Ingo Molnar <mingo@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)),
        Wanpeng Li <wanpengli@tencent.com>,
        Borislav Petkov <bp@alien8.de>,
        Jim Mattson <jmattson@google.com>,
        linux-kernel@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Maxim Levitsky <mlevitsk@redhat.com>
Subject: [PATCH v5 0/4] KVM: nSVM: ondemand nested state allocation
Date:   Mon, 21 Sep 2020 16:19:19 +0300
Message-Id: <20200921131923.120833-1-mlevitsk@redhat.com>
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This is yet another version of ondemand nested state allocation.=0D
=0D
In this version I adoped the suggestion of Sean Christopherson=0D
to return make EFER write return a negative error which then should=0D
propogate to the userspace.=0D
=0D
So I fixed the WRMSR code to actually obey this (#GP on positive=0D
return value, exit to userspace when negative error value,=0D
and success on 0 error value, and fixed one user (xen)=0D
that returned negative error code on failures.=0D
=0D
The XEN patch is only compile tested. The rest were tested=0D
by always returning -ENOMEM from svm_allocate_nested.=0D
=0D
Best regards,=0D
	Maxim Levitsky=0D
=0D
Maxim Levitsky (4):=0D
  KVM: x86: xen_hvm_config cleanup return values=0D
  KVM: x86: report negative values from wrmsr to userspace=0D
  KVM: x86: allow kvm_x86_ops.set_efer to return a value=0D
  KVM: nSVM: implement ondemand allocation of the nested state=0D
=0D
 arch/x86/include/asm/kvm_host.h |  2 +-=0D
 arch/x86/kvm/emulate.c          |  7 ++--=0D
 arch/x86/kvm/svm/nested.c       | 42 ++++++++++++++++++++++++=0D
 arch/x86/kvm/svm/svm.c          | 58 +++++++++++++++++++--------------=0D
 arch/x86/kvm/svm/svm.h          |  8 ++++-=0D
 arch/x86/kvm/vmx/vmx.c          |  9 +++--=0D
 arch/x86/kvm/x86.c              | 36 ++++++++++----------=0D
 7 files changed, 113 insertions(+), 49 deletions(-)=0D
=0D
-- =0D
2.26.2=0D
=0D