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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2023-12-05 01:45:01 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2024-01-08 18:14:41 +0100
commit1c6d984f523f67ecfad1083bb04c55d91977bb15 (patch)
treeeab97f8ec6bcf5c56e448e1e0cfa8a5d62944eba /arch/loongarch/include
parentMerge tag 'kvm-x86-mmu-6.8' of https://github.com/kvm-x86/linux into HEAD (diff)
downloadlinux-1c6d984f523f67ecfad1083bb04c55d91977bb15.tar.xz
linux-1c6d984f523f67ecfad1083bb04c55d91977bb15.zip
x86/kvm: Do not try to disable kvmclock if it was not enabled
kvm_guest_cpu_offline() tries to disable kvmclock regardless if it is present in the VM. It leads to write to a MSR that doesn't exist on some configurations, namely in TDX guest: unchecked MSR access error: WRMSR to 0x12 (tried to write 0x0000000000000000) at rIP: 0xffffffff8110687c (kvmclock_disable+0x1c/0x30) kvmclock enabling is gated by CLOCKSOURCE and CLOCKSOURCE2 KVM paravirt features. Do not disable kvmclock if it was not enabled. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Fixes: c02027b5742b ("x86/kvm: Disable kvmclock on all CPUs on shutdown") Reviewed-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Wanpeng Li <wanpengli@tencent.com> Cc: stable@vger.kernel.org Message-Id: <20231205004510.27164-6-kirill.shutemov@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/loongarch/include')
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