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vmm: Fallback to legacy boot if PVH is enabled along with initramfs

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For now, the codebase does not support booting from initramfs with PVH
boot protocol, therefore we need to fallback to the legacy boot.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2020-03-26 10:50:48 +01:00
parent 5157ba10d1
commit 785812d976
1 changed files with 14 additions and 3 deletions
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17
vmm/src/vm.rs
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@ -513,9 +513,20 @@ impl Vm {
let mut entry_point_addr: GuestAddress = entry_addr.kernel_load;
let boot_prot = if entry_addr.pvh_entry_addr.is_some() {
// entry_addr.pvh_entry_addr field is safe to unwrap here
entry_point_addr = entry_addr.pvh_entry_addr.unwrap();
BootProtocol::PvhBoot
// Handle the case where PVH is set but the user wants to
// boot an initramfs. At this point in time, our code does
// not support initramfs along with PVH, hence we make the
// code fallback to the legacy Linux boot.
if initramfs_config.is_some() {
warn!(
"PVH not supported with initramfs, falling back to legacy Linux boot"
);
BootProtocol::LinuxBoot
} else {
// entry_addr.pvh_entry_addr field is safe to unwrap here
entry_point_addr = entry_addr.pvh_entry_addr.unwrap();
BootProtocol::PvhBoot
}
} else {
BootProtocol::LinuxBoot
};