Add comments to enum hv_tsc_page_status documenting what each state means.
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 71b14e51fdc0..e1b6e2edc828 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -884,12 +884,19 @@ struct kvm_hv_syndbg {
u64 options;
};
+/* Current state of Hyper-V TSC page clocksource */
enum hv_tsc_page_status {
+ /* TSC page was not set up or disabled */
HV_TSC_PAGE_UNSET = 0,
+ /* TSC page MSR was written by the guest, update pending */
HV_TSC_PAGE_GUEST_CHANGED,
+ /* TSC page MSR was written by KVM userspace, update pending */
HV_TSC_PAGE_HOST_CHANGED,
+ /* TSC page was properly set up and is currently active */
HV_TSC_PAGE_SET,
+ /* TSC page is currently being updated and therefore is inactive */
HV_TSC_PAGE_UPDATING,
+ /* TSC page was set up with an inaccessible GPA */
HV_TSC_PAGE_BROKEN,
};
--
2.30.2
