diff options
Diffstat (limited to 'drivers/hv/hyperv_vmbus.h')
| -rw-r--r-- | drivers/hv/hyperv_vmbus.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 55f2086841ae..f6b1e710f805 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -124,6 +124,17 @@ struct hv_per_cpu_context { void *synic_event_page; /* + * The page is only used in hv_post_message() for a TDX VM (with the + * paravisor) to post a messages to Hyper-V: when such a VM calls + * HVCALL_POST_MESSAGE, it can't use the hyperv_pcpu_input_arg (which + * is encrypted in such a VM) as the hypercall input page, because + * the input page for HVCALL_POST_MESSAGE must be decrypted in such a + * VM, so post_msg_page (which is decrypted in hv_synic_alloc()) is + * introduced for this purpose. See hyperv_init() for more comments. + */ + void *post_msg_page; + + /* * Starting with win8, we can take channel interrupts on any CPU; * we will manage the tasklet that handles events messages on a per CPU * basis. |