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| author |   Vitaly Kuznetsov <vkuznets@redhat.com> | 2019-08-27 18:04:02 +0200 |
|---|---|---|
| committer |   Radim Krčmář <rkrcmar@redhat.com> | 2019-08-27 20:59:04 +0200 |
| commit | ea1529873ab18c204688cf31746df851c098cbea (patch) | |
| tree | c9663fafc41633e17d9afb91b84cf423a7cf231e /COPYING | |
| parent | Merge tag 'kvm-ppc-fixes-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc (diff) | |
| download | linux-dev-ea1529873ab18c204688cf31746df851c098cbea.tar.xz linux-dev-ea1529873ab18c204688cf31746df851c098cbea.zip | |
KVM: x86: hyper-v: don't crash on KVM_GET_SUPPORTED_HV_CPUID when kvm_intel.nested is disabled
If kvm_intel is loaded with nested=0 parameter an attempt to perform
KVM_GET_SUPPORTED_HV_CPUID results in OOPS as nested_get_evmcs_version hook
in kvm_x86_ops is NULL (we assign it in nested_vmx_hardware_setup() and
this only happens in case nested is enabled).
Check that kvm_x86_ops->nested_get_evmcs_version is not NULL before
calling it. With this, we can remove the stub from svm as it is no
longer needed.
Cc: <stable@vger.kernel.org>
Fixes: e2e871ab2f02 ("x86/kvm/hyper-v: Introduce nested_get_evmcs_version() helper")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'COPYING')
0 files changed, 0 insertions, 0 deletions