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hypervisor: transform between UserMemoryRegion and hypervisor structs

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Signed-off-by: Dev Rajput <t-devrajput@microsoft.com>
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu
2022-07-08 21:18:31 +00:00
committed by Rob Bradford
parent fabc940b65
commit 5894b5370c
2 changed files with 98 additions and 0 deletions
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49
hypervisor/src/kvm/mod.rs
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@@ -44,6 +44,10 @@ use vmm_sys_util::eventfd::EventFd;
pub mod x86_64;
#[cfg(target_arch = "x86_64")]
use crate::arch::x86::NUM_IOAPIC_PINS;
use crate::{
UserMemoryRegion, USER_MEMORY_REGION_LOG_DIRTY, USER_MEMORY_REGION_READ,
USER_MEMORY_REGION_WRITE,
};
#[cfg(target_arch = "aarch64")]
use aarch64::{RegList, Register, StandardRegisters};
#[cfg(target_arch = "x86_64")]
@@ -160,6 +164,51 @@ pub struct TdxCapabilities {
pub cpuid_configs: [TdxCpuidConfig; TDX_MAX_NR_CPUID_CONFIGS],
}
impl From<kvm_userspace_memory_region> for UserMemoryRegion {
fn from(region: kvm_userspace_memory_region) -> Self {
let mut flags = USER_MEMORY_REGION_READ;
if region.flags & KVM_MEM_READONLY == 0 {
flags |= USER_MEMORY_REGION_WRITE;
}
if region.flags & KVM_MEM_LOG_DIRTY_PAGES != 0 {
flags |= USER_MEMORY_REGION_LOG_DIRTY;
}
UserMemoryRegion {
slot: region.slot,
guest_phys_addr: region.guest_phys_addr,
memory_size: region.memory_size,
userspace_addr: region.userspace_addr,
flags,
}
}
}
impl From<UserMemoryRegion> for kvm_userspace_memory_region {
fn from(region: UserMemoryRegion) -> Self {
assert!(
region.flags & USER_MEMORY_REGION_READ != 0,
"KVM mapped memory is always readable"
);
let mut flags = 0;
if region.flags & USER_MEMORY_REGION_WRITE == 0 {
flags |= KVM_MEM_READONLY;
}
if region.flags & USER_MEMORY_REGION_LOG_DIRTY != 0 {
flags |= KVM_MEM_LOG_DIRTY_PAGES;
}
kvm_userspace_memory_region {
slot: region.slot,
guest_phys_addr: region.guest_phys_addr,
memory_size: region.memory_size,
userspace_addr: region.userspace_addr,
flags,
}
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)]
pub struct KvmVmState {}