diff options
| author | Tianyu Lan <Tianyu.Lan@microsoft.com> | 2021-10-25 08:21:12 -0400 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-10-28 11:22:49 +0000 |
| commit | 20c89a559e00dfe352b73e867211a669113ae881 (patch) | |
| tree | 502dc12927915b48b4d5321afe4272104c68735b /drivers/hv/hv_common.c | |
| parent | faff44069ff538ccdfef187c4d7ec83d22dfb3a4 (diff) | |
x86/hyperv: Add ghcb hvcall support for SNP VM
hyperv provides ghcb hvcall to handle VMBus
HVCALL_SIGNAL_EVENT and HVCALL_POST_MESSAGE
msg in SNP Isolation VM. Add such support.
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/20211025122116.264793-8-ltykernel@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv/hv_common.c')
| -rw-r--r-- | drivers/hv/hv_common.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c index 1fc82d237161..7be173a99f27 100644 --- a/drivers/hv/hv_common.c +++ b/drivers/hv/hv_common.c @@ -289,3 +289,9 @@ void __weak hyperv_cleanup(void) { } EXPORT_SYMBOL_GPL(hyperv_cleanup); + +u64 __weak hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size) +{ + return HV_STATUS_INVALID_PARAMETER; +} +EXPORT_SYMBOL_GPL(hv_ghcb_hypercall); |