diff options
| author | Jim Mattson <jmattson@google.com> | 2020-06-04 01:56:20 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-07-08 22:21:43 +0200 |
| commit | 80a1684c0161088710398d84a7cdd683c5d88228 (patch) | |
| tree | 4feb1a3dc7bc593a25ef02f680be924138e65762 /arch/x86 | |
| parent | kvm: svm: Always set svm->last_cpu on VMRUN (diff) | |
| download | linux-80a1684c0161088710398d84a7cdd683c5d88228.tar.xz linux-80a1684c0161088710398d84a7cdd683c5d88228.zip | |
kvm: vmx: Add last_cpu to struct vcpu_vmx
As we already do in svm, record the last logical processor on which a
vCPU has run, so that it can be communicated to userspace for
potential hardware errors.
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Message-Id: <20200603235623.245638-4-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.h | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 608e992e8db9..4d8f12c0a5c6 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6734,6 +6734,7 @@ reenter_guest: if (vcpu->arch.cr2 != read_cr2()) write_cr2(vcpu->arch.cr2); + vmx->last_cpu = vcpu->cpu; vmx->fail = __vmx_vcpu_run(vmx, (unsigned long *)&vcpu->arch.regs, vmx->loaded_vmcs->launched); diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index 639798e4a6ca..f8f9e214d285 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -300,6 +300,9 @@ struct vcpu_vmx { u64 ept_pointer; struct pt_desc pt_desc; + + /* which host CPU was used for running this vcpu */ + unsigned int last_cpu; }; enum ept_pointers_status { |