External/cloud-hypervisor
1
0
Fork 0
mirror of https://github.com/cloud-hypervisor/cloud-hypervisor.git synced 2024-10-02 11:35:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

hypervisor: Add support for handling extended guest request

Browse Source 
Currently MSHV does not support fetching extended guest report and thus
return an appropriate error stating the NAE event is not valid.

Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
This commit is contained in:
Jinank Jain 2023-10-19 08:40:36 +00:00 committed by Bo Chen
parent cb5ea05945
commit e2288a8d2c
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
hypervisor/src/mshv/mod.rs
View File

@ -831,6 +831,23 @@ impl cpu::Vcpu for MshvVcpu {
}
}
}
SVM_EXITCODE_SNP_EXTENDED_GUEST_REQUEST => {
warn!("Fetching extended guest request is not supported");
// Extended guest request is not supported by the Hypervisor
// Returning the error to the guest
// 0x6 means `The NAE event was not valid`
// Reference: GHCB Spec, page 42
let value: u64 = 0x6;
let mut swei2_rw_gpa_arg = mshv_bindings::mshv_read_write_gpa {
base_gpa: ghcb_gpa + GHCB_SW_EXITINFO2_OFFSET,
byte_count: std::mem::size_of::<u64>() as u32,
..Default::default()
};
swei2_rw_gpa_arg.data.copy_from_slice(&value.to_le_bytes());
self.fd
.gpa_write(&mut swei2_rw_gpa_arg)
.map_err(|e| cpu::HypervisorCpuError::GpaWrite(e.into()))?;
}
_ => panic!(
"GHCB_INFO_NORMAL: Unhandled exit code: {:0x}",
exit_code