diff options
| author | Nicolai Stange <nstange@suse.de> | 2018-07-22 13:38:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-15 18:14:52 +0200 |
| commit | 77a83b3a622a0fbdcb7c0d81c853649dbc0eb7a2 (patch) | |
| tree | 5901a95b02fdf50789a2d6dc238970612e291f82 | |
| parent | 2c5a3a05474011cb84a1b6c45543d56c324cadca (diff) | |
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
commit 18b57ce2eb8c8b9a24174a89250cf5f57c76ecdc upstream
For VMEXITs caused by external interrupts, vmx_handle_external_intr()
indirectly calls into the interrupt handlers through the host's IDT.
It follows that these interrupts get accounted for in the
kvm_cpu_l1tf_flush_l1d per-cpu flag.
The subsequently executed vmx_l1d_flush() will thus be aware that some
interrupts have happened and conduct a L1d flush anyway.
Setting l1tf_flush_l1d from vmx_handle_external_intr() isn't needed
anymore. Drop it.
Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kvm/vmx.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 306a11460633..0f4c94605584 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -8929,7 +8929,6 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) [ss]"i"(__KERNEL_DS), [cs]"i"(__KERNEL_CS) ); - vcpu->arch.l1tf_flush_l1d = true; } } STACK_FRAME_NON_STANDARD(vmx_handle_external_intr); |