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vmm: hypervisor: simplify VM creation API

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For MSHV customers don't want to make everything
default during partition creation. For example
nested support, some synthetic features could be
controlled from CLI through platform argument.
Create_vm API getting messy after adding more flags.
This patch introduces common data struct to be passed
from vmm crate to hypervisor crate during partition creation.

Signed-off-by: Muminul Islam <muislam@microsoft.com>
This commit is contained in:
Muminul Islam
2025-09-12 17:30:26 -07:00
committed by Bo Chen
parent f122398262
commit 1e8996f94f
8 changed files with 167 additions and 216 deletions
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vmm/src/vm.rs
+14 -22
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@@ -45,7 +45,7 @@ use gdbstub_arch::aarch64::reg::AArch64CoreRegs as CoreRegs;
use gdbstub_arch::x86::reg::X86_64CoreRegs as CoreRegs;
#[cfg(target_arch = "aarch64")]
use hypervisor::arch::aarch64::regs::AARCH64_PMU_IRQ;
use hypervisor::{HypervisorVmError, VmOps};
use hypervisor::{HypervisorVmConfig, HypervisorVmError, VmOps};
use libc::{SIGWINCH, termios};
use linux_loader::cmdline::Cmdline;
#[cfg(all(target_arch = "x86_64", feature = "guest_debug"))]
@@ -1084,26 +1084,16 @@ impl Vm {
#[cfg(feature = "sev_snp")] mem_size: u64,
) -> Result<Arc<dyn hypervisor::Vm>> {
hypervisor.check_required_extensions().unwrap();
let config = HypervisorVmConfig {
#[cfg(feature = "tdx")]
tdx_enabled,
#[cfg(feature = "sev_snp")]
sev_snp_enabled,
#[cfg(feature = "sev_snp")]
mem_size,
};
cfg_if::cfg_if! {
if #[cfg(feature = "tdx")] {
// Passing KVM_X86_TDX_VM: 1 if tdx_enabled is true
// Otherwise KVM_X86_LEGACY_VM: 0
// value of tdx_enabled is mapped to KVM_X86_TDX_VM or KVM_X86_LEGACY_VM
let vm = hypervisor
.create_vm_with_type(u64::from(tdx_enabled))
.unwrap();
} else if #[cfg(feature = "sev_snp")] {
// Passing SEV_SNP_ENABLED: 1 if sev_snp_enabled is true
// Otherwise SEV_SNP_DISABLED: 0
// value of sev_snp_enabled is mapped to SEV_SNP_ENABLED for true or SEV_SNP_DISABLED for false
let vm = hypervisor
.create_vm_with_type_and_memory(u64::from(sev_snp_enabled), mem_size)
.unwrap();
} else {
let vm = hypervisor.create_vm().unwrap();
}
}
let vm = hypervisor.create_vm(config).unwrap();
#[cfg(target_arch = "x86_64")]
{
@@ -3497,7 +3487,7 @@ mod tests {
.collect();
let hv = hypervisor::new().unwrap();
let vm = hv.create_vm().unwrap();
let vm = hv.create_vm(HypervisorVmConfig::default()).unwrap();
let gic = vm
.create_vgic(Gic::create_default_config(1))
.expect("Cannot create gic");
@@ -3539,7 +3529,9 @@ pub fn test_vm() {
let mem = GuestMemoryMmap::from_ranges(&[(load_addr, mem_size)]).unwrap();
let hv = hypervisor::new().unwrap();
let vm = hv.create_vm().expect("new VM creation failed");
let vm = hv
.create_vm(HypervisorVmConfig::default())
.expect("new VM creation failed");
for (index, region) in mem.iter().enumerate() {
let mem_region = vm.make_user_memory_region(