KVM: VMX: Mark all PERF_GLOBAL_(OVF)_CTRL bits reserved if there's no vPMU
stable inclusion from stable-v5.10.137 commit 6b4addec2f2d68ed774b4b7b6264419b15aee3b0 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I60PLB Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6b4addec2f2d68ed774b4b7b6264419b15aee3b0 -------------------------------- [ Upstream commit 93255bf9 ] Mark all MSR_CORE_PERF_GLOBAL_CTRL and MSR_CORE_PERF_GLOBAL_OVF_CTRL bits as reserved if there is no guest vPMU. The nVMX VM-Entry consistency checks do not check for a valid vPMU prior to consuming the masks via kvm_valid_perf_global_ctrl(), i.e. may incorrectly allow a non-zero mask to be loaded via VM-Enter or VM-Exit (well, attempted to be loaded, the actual MSR load will be rejected by intel_is_valid_msr()). Fixes: f5132b01 ("KVM: Expose a version 2 architectural PMU to a guests") Cc: stable@vger.kernel.org Signed-off-by:Sean Christopherson <seanjc@google.com> Message-Id: <20220722224409.1336532-3-seanjc@google.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com> Reviewed-by:
Wei Li <liwei391@huawei.com>
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