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more hvm work

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This commit is contained in:
Alex Zenla
2024-05-04 00:33:05 -07:00
parent a6d84d70f4
commit 2f69f339bc
6 changed files with 218 additions and 57 deletions
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48
crates/xen/xencall/src/lib.rs
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@ -3,7 +3,7 @@ pub mod sys;
use crate::error::{Error, Result};
use crate::sys::{
AddressSize, AssignDevice, CreateDomain, DomCtl, DomCtlValue, DomCtlVcpuContext, EvtChnAllocUnbound, GetDomainInfo, GetPageFrameInfo3, HvmParam, Hypercall, HypercallInit, IoMemPermission, IoPortPermission, IrqPermission, MaxMem, MaxVcpus, MemoryMap, MemoryReservation, MmapBatch, MmapResource, MmuExtOp, MultiCallEntry, PciAssignDevice, XenCapabilitiesInfo, DOMCTL_DEV_PCI, HYPERVISOR_DOMCTL, HYPERVISOR_EVENT_CHANNEL_OP, HYPERVISOR_HVM_OP, HYPERVISOR_MEMORY_OP, HYPERVISOR_MMUEXT_OP, HYPERVISOR_MULTICALL, HYPERVISOR_XEN_VERSION, XENVER_CAPABILITIES, XEN_DOMCTL_ASSIGN_DEVICE, XEN_DOMCTL_CREATEDOMAIN, XEN_DOMCTL_DESTROYDOMAIN, XEN_DOMCTL_GETDOMAININFO, XEN_DOMCTL_GETPAGEFRAMEINFO3, XEN_DOMCTL_HYPERCALL_INIT, XEN_DOMCTL_IOMEM_PERMISSION, XEN_DOMCTL_IOPORT_PERMISSION, XEN_DOMCTL_IRQ_PERMISSION, XEN_DOMCTL_MAX_MEM, XEN_DOMCTL_MAX_VCPUS, XEN_DOMCTL_PAUSEDOMAIN, XEN_DOMCTL_SETVCPUCONTEXT, XEN_DOMCTL_SET_ADDRESS_SIZE, XEN_DOMCTL_UNPAUSEDOMAIN, XEN_MEM_CLAIM_PAGES, XEN_MEM_MEMORY_MAP, XEN_MEM_POPULATE_PHYSMAP
AddressSize, AssignDevice, CreateDomain, DomCtl, DomCtlValue, DomCtlVcpuContext, EvtChnAllocUnbound, GetDomainInfo, GetPageFrameInfo3, HvmContext, HvmParam, Hypercall, HypercallInit, IoMemPermission, IoPortPermission, IrqPermission, MaxMem, MaxVcpus, MemoryMap, MemoryReservation, MmapBatch, MmapResource, MmuExtOp, MultiCallEntry, PciAssignDevice, XenCapabilitiesInfo, DOMCTL_DEV_PCI, HYPERVISOR_DOMCTL, HYPERVISOR_EVENT_CHANNEL_OP, HYPERVISOR_HVM_OP, HYPERVISOR_MEMORY_OP, HYPERVISOR_MMUEXT_OP, HYPERVISOR_MULTICALL, HYPERVISOR_XEN_VERSION, XENVER_CAPABILITIES, XEN_DOMCTL_ASSIGN_DEVICE, XEN_DOMCTL_CREATEDOMAIN, XEN_DOMCTL_DESTROYDOMAIN, XEN_DOMCTL_GETDOMAININFO, XEN_DOMCTL_GETHVMCONTEXT, XEN_DOMCTL_GETPAGEFRAMEINFO3, XEN_DOMCTL_HYPERCALL_INIT, XEN_DOMCTL_IOMEM_PERMISSION, XEN_DOMCTL_IOPORT_PERMISSION, XEN_DOMCTL_IRQ_PERMISSION, XEN_DOMCTL_MAX_MEM, XEN_DOMCTL_MAX_VCPUS, XEN_DOMCTL_PAUSEDOMAIN, XEN_DOMCTL_SETHVMCONTEXT, XEN_DOMCTL_SETVCPUCONTEXT, XEN_DOMCTL_SET_ADDRESS_SIZE, XEN_DOMCTL_UNPAUSEDOMAIN, XEN_MEM_CLAIM_PAGES, XEN_MEM_MEMORY_MAP, XEN_MEM_POPULATE_PHYSMAP
};
use libc::{c_int, mmap, usleep, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE};
use log::trace;
@ -17,7 +17,7 @@ use tokio::sync::Semaphore;
use std::fs::{File, OpenOptions};
use std::os::fd::AsRawFd;
use std::ptr::addr_of_mut;
use std::ptr::{addr_of_mut, null_mut};
use std::slice;
#[derive(Clone)]
@ -819,4 +819,48 @@ impl XenCall {
.await?;
Ok(())
}
pub async fn get_hvm_context(&self, domid: u32, buffer: Option<&mut [u8]>) -> Result<u32> {
trace!(
"domctl fd={} get_hvm_context domid={}",
self.handle.as_raw_fd(),
domid,
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_GETHVMCONTEXT,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
hvm_context: HvmContext {
size: buffer.as_ref().map(|x| x.len()).unwrap_or(0) as u32,
buffer: buffer.map(|x| x.as_mut_ptr()).unwrap_or(null_mut()) as u64,
}
},
};
self.hypercall1(HYPERVISOR_DOMCTL, addr_of_mut!(domctl) as c_ulong)
.await?;
Ok(unsafe { domctl.value.hvm_context.size })
}
pub async fn set_hvm_context(&self, domid: u32, buffer: &mut [u8]) -> Result<u32> {
trace!(
"domctl fd={} set_hvm_context domid={}",
self.handle.as_raw_fd(),
domid,
);
let mut domctl = DomCtl {
cmd: XEN_DOMCTL_SETHVMCONTEXT,
interface_version: self.domctl_interface_version,
domid,
value: DomCtlValue {
hvm_context: HvmContext {
size: buffer.len() as u32,
buffer: buffer.as_ptr() as u64,
}
},
};
self.hypercall1(HYPERVISOR_DOMCTL, addr_of_mut!(domctl) as c_ulong)
.await?;
Ok(unsafe { domctl.value.hvm_context.size })
}
}