alioth 0.12.0

Core library for Alioth, an experimental Type-2 hypervisor.
Documentation 
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// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::io::ErrorKind;

use snafu::ResultExt;

use crate::hv::hvf::check_ret;
use crate::hv::hvf::vcpu::HvfVcpu;
use crate::hv::{Result, error};
use crate::sys::hvf::hv_vcpu_set_reg;

impl HvfVcpu {
    pub fn entry_mmio(&mut self, data: u64) -> Result<()> {
        let Some(reg) = self.exit_reg.take() else {
            return Err(ErrorKind::InvalidInput.into()).context(error::RunVcpu);
        };
        let ret = unsafe { hv_vcpu_set_reg(self.vcpu_id, reg, data) };
        check_ret(ret).context(error::VcpuReg)
    }
}