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| author | johannst <johannst@users.noreply.github.com> | 2021-06-02 22:38:57 +0000 |
|---|---|---|
| committer | johannst <johannst@users.noreply.github.com> | 2021-06-02 22:38:57 +0000 |
| commit | d2d2ba7c6602e73dc2e3dbd0aa4215e4c412a688 (patch) | |
| tree | 360d361f769b79d9af2c02758eaa05fb887bf679 /src/kvm_rs/vcpu.rs.html | |
| download | mini-kvm-rs-d2d2ba7c6602e73dc2e3dbd0aa4215e4c412a688.tar.gz mini-kvm-rs-d2d2ba7c6602e73dc2e3dbd0aa4215e4c412a688.zip | |
deploy: d2e2063cb2b5a82709e9c5188602a9fc0f7dadbd
Diffstat (limited to 'src/kvm_rs/vcpu.rs.html')
| -rw-r--r-- | src/kvm_rs/vcpu.rs.html | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/kvm_rs/vcpu.rs.html b/src/kvm_rs/vcpu.rs.html new file mode 100644 index 0000000..df4a7bc --- /dev/null +++ b/src/kvm_rs/vcpu.rs.html @@ -0,0 +1,279 @@ +<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `src/vcpu.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>vcpu.rs - source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings"></script><script src="../../storage.js"></script><script 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role="menu"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" class="help-button">?</button> + <a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" height="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span> +<span id="2"> 2</span> +<span id="3"> 3</span> +<span id="4"> 4</span> +<span id="5"> 5</span> +<span id="6"> 6</span> +<span id="7"> 7</span> +<span id="8"> 8</span> +<span id="9"> 9</span> +<span id="10"> 10</span> +<span id="11"> 11</span> +<span id="12"> 12</span> +<span id="13"> 13</span> +<span id="14"> 14</span> +<span id="15"> 15</span> +<span id="16"> 16</span> +<span id="17"> 17</span> +<span id="18"> 18</span> +<span id="19"> 19</span> +<span id="20"> 20</span> +<span id="21"> 21</span> +<span id="22"> 22</span> +<span id="23"> 23</span> +<span id="24"> 24</span> +<span id="25"> 25</span> +<span id="26"> 26</span> +<span id="27"> 27</span> +<span id="28"> 28</span> +<span id="29"> 29</span> +<span id="30"> 30</span> +<span id="31"> 31</span> +<span id="32"> 32</span> +<span id="33"> 33</span> +<span id="34"> 34</span> +<span id="35"> 35</span> +<span id="36"> 36</span> +<span id="37"> 37</span> +<span id="38"> 38</span> +<span id="39"> 39</span> +<span id="40"> 40</span> +<span id="41"> 41</span> +<span id="42"> 42</span> +<span id="43"> 43</span> +<span id="44"> 44</span> +<span id="45"> 45</span> +<span id="46"> 46</span> +<span id="47"> 47</span> +<span id="48"> 48</span> +<span id="49"> 49</span> +<span id="50"> 50</span> +<span id="51"> 51</span> +<span id="52"> 52</span> +<span 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91</span> +<span id="92"> 92</span> +<span id="93"> 93</span> +<span id="94"> 94</span> +<span id="95"> 95</span> +<span id="96"> 96</span> +<span id="97"> 97</span> +<span id="98"> 98</span> +<span id="99"> 99</span> +<span id="100">100</span> +<span id="101">101</span> +<span id="102">102</span> +<span id="103">103</span> +<span id="104">104</span> +<span id="105">105</span> +<span id="106">106</span> +<span id="107">107</span> +<span id="108">108</span> +<span id="109">109</span> +<span id="110">110</span> +<span id="111">111</span> +<span id="112">112</span> +<span id="113">113</span> +<span id="114">114</span> +<span id="115">115</span> +<span id="116">116</span> +<span id="117">117</span> +<span id="118">118</span> +<span id="119">119</span> +<span id="120">120</span> +<span id="121">121</span> +<span id="122">122</span> +<span id="123">123</span> +<span id="124">124</span> +<span id="125">125</span> +<span id="126">126</span> +<span id="127">127</span> +<span id="128">128</span> +<span id="129">129</span> +<span id="130">130</span> +<span id="131">131</span> +<span id="132">132</span> +<span id="133">133</span> +<span id="134">134</span> +<span id="135">135</span> +<span id="136">136</span> +</pre><div class="example-wrap"><pre class="rust "> +<span class="doccomment">//! VCPU system ioctls.</span> + +<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fs</span>; +<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>; + +<span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">ioctl</span>, <span class="ident">kvm_sys</span>, <span class="ident">KvmRun</span>}; + +<span class="doccomment">/// Exit reasons for the [`Vcpu::kvm_run`][crate::vcpu::Vcpu::kvm_run] function.</span> +<span class="doccomment">///</span> +<span class="doccomment">/// Details for the different exit reasons can be found in the [`kvm_run`</span> +<span class="doccomment">/// structure][kvm-run-struct] description.</span> +<span class="doccomment">///</span> +<span class="doccomment">/// [kvm-run]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-run</span> +<span class="doccomment">/// [kvm-run-struct]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#the-kvm-run-structure</span> +<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">KvmExit</span><span class="op"><</span><span class="lifetime">'cpu</span><span class="op">></span> { + <span class="ident">Halt</span>, + <span class="ident">IoIn</span>(<span class="ident">u16</span>, <span class="kw-2">&</span><span class="lifetime">'cpu</span> <span class="kw-2">mut</span> [<span class="ident">u8</span>]), + <span class="ident">IoOut</span>(<span class="ident">u16</span>, <span class="kw-2">&</span><span class="lifetime">'cpu</span> [<span class="ident">u8</span>]), + <span class="ident">MmioRead</span>(<span class="ident">u64</span>, <span class="kw-2">&</span><span class="lifetime">'cpu</span> <span class="kw-2">mut</span> [<span class="ident">u8</span>]), + <span class="ident">MmioWrite</span>(<span class="ident">u64</span>, <span class="kw-2">&</span><span class="lifetime">'cpu</span> [<span class="ident">u8</span>]), +} + +<span class="doccomment">/// Wrapper for VCPU ioctls.</span> +<span class="doccomment">///</span> +<span class="doccomment">/// Representation of the file descriptor obtained by the [`KVM_CREATE_VCPU`][kvm-create-vcpu] ioctl.</span> +<span class="doccomment">/// This wrapper provides access to the `VCPU ioctls` as described in [KVM API][kvm].</span> +<span class="doccomment">///</span> +<span class="doccomment">/// [kvm]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#general-description</span> +<span class="doccomment">/// [kvm-create-vcpu]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-create-vcpu</span> +<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Vcpu</span> { + <span class="ident">vcpu</span>: <span class="ident">fs</span>::<span class="ident">File</span>, + <span class="ident">kvm_run</span>: <span class="ident">KvmRun</span>, +} + +<span class="kw">impl</span> <span class="ident">Vcpu</span> { + <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">vcpu</span>: <span class="ident">fs</span>::<span class="ident">File</span>, <span class="ident">kvm_run</span>: <span class="ident">KvmRun</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Vcpu</span> { + <span class="ident">Vcpu</span> { <span class="ident">vcpu</span>, <span class="ident">kvm_run</span> } + } + + <span class="doccomment">/// Get the general purpose registers with the [`KVM_GET_REGS`][kvm-get-regs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_regs`](crate::kvm_sys::kvm_regs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-get-regs]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-get-regs</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_regs</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">kvm_sys</span>::<span class="ident">kvm_regs</span><span class="op">></span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">regs</span> <span class="op">=</span> <span class="ident">kvm_sys</span>::<span class="ident">kvm_regs</span>::<span class="ident">default</span>(); + <span class="ident">ioctl</span>( + <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">vcpu</span>, + <span class="ident">kvm_sys</span>::<span class="ident">KVM_GET_REGS</span>, + <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">regs</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="ident">u64</span>, + )<span class="question-mark">?</span>; + <span class="prelude-val">Ok</span>(<span class="ident">regs</span>) + } + + <span class="doccomment">/// Set the general purpose registers with the [`KVM_SET_REGS`][kvm-set-regs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_regs`](crate::kvm_sys::kvm_regs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-set-regs]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-set-regs</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_regs</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">regs</span>: <span class="ident">kvm_sys</span>::<span class="ident">kvm_regs</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { + <span class="ident">ioctl</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">vcpu</span>, <span class="ident">kvm_sys</span>::<span class="ident">KVM_SET_REGS</span>, <span class="kw-2">&</span><span class="ident">regs</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="ident">u64</span>).<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> ()) + } + + <span class="doccomment">/// Get the special registers with the [`KVM_GET_SREGS`][kvm-get-sregs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_sregs`](crate::kvm_sys::kvm_sregs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-get-sregs]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-get-sregs</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_sregs</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">kvm_sys</span>::<span class="ident">kvm_sregs</span><span class="op">></span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">sregs</span> <span class="op">=</span> <span class="ident">kvm_sys</span>::<span class="ident">kvm_sregs</span>::<span class="ident">default</span>(); + <span class="ident">ioctl</span>( + <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">vcpu</span>, + <span class="ident">kvm_sys</span>::<span class="ident">KVM_GET_SREGS</span>, + <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">sregs</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="kw">_</span> <span class="kw">as</span> <span class="ident">u64</span>, + )<span class="question-mark">?</span>; + <span class="prelude-val">Ok</span>(<span class="ident">sregs</span>) + } + + <span class="doccomment">/// Set the special registers with the [`KVM_SET_SREGS`][kvm-set-sregs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_sregs`](crate::kvm_sys::kvm_sregs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-set-sregs]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-set-sregs</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_sregs</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">sregs</span>: <span class="ident">kvm_sys</span>::<span class="ident">kvm_sregs</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span>()<span class="op">></span> { + <span class="ident">ioctl</span>( + <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">vcpu</span>, + <span class="ident">kvm_sys</span>::<span class="ident">KVM_SET_SREGS</span>, + <span class="kw-2">&</span><span class="ident">sregs</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw">const</span> <span class="kw">_</span> <span class="kw">as</span> <span class="ident">u64</span>, + ) + .<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> ()) + } + + <span class="doccomment">/// Run the guest VCPU with the [`KVM_RUN`][kvm-run] ioctl until it exits with one of the exit</span> + <span class="doccomment">/// reasons described in [`KvmExit`](crate::vcpu::KvmExit).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-run]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-run</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">run</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">KvmExit</span><span class="op"><</span><span class="lifetime">'_</span><span class="op">></span><span class="op">></span> { + <span class="ident">ioctl</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">vcpu</span>, <span class="ident">kvm_sys</span>::<span class="ident">KVM_RUN</span>, <span class="number">0</span>)<span class="question-mark">?</span>; + + <span class="kw">let</span> <span class="ident">kvm_run</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">kvm_run</span>.<span class="ident">as_mut</span>(); + + <span class="kw">match</span> <span class="ident">kvm_run</span>.<span class="ident">exit_reason</span> <span class="kw">as</span> <span class="ident">u64</span> { + <span class="ident">kvm_sys</span>::<span class="ident">KVM_EXIT_HLT</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">KvmExit</span>::<span class="ident">Halt</span>), + <span class="ident">kvm_sys</span>::<span class="ident">KVM_EXIT_IO</span> <span class="op">=</span><span class="op">></span> { + <span class="comment">// Safe to use union `io` field, as Kernel instructed us to.</span> + <span class="kw">let</span> <span class="ident">io</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">kvm_run</span>.<span class="ident">inner</span>.<span class="ident">io</span> }; + + <span class="kw">let</span> <span class="ident">kvm_run_ptr</span> <span class="op">=</span> <span class="ident">kvm_run</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">kvm_sys</span>::<span class="ident">kvm_run</span> <span class="kw">as</span> <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">u8</span>; + + <span class="comment">// Create IO buffer located at `kvm_run + io.offset`.</span> + <span class="kw">let</span> <span class="ident">data</span> <span class="op">=</span> <span class="kw">unsafe</span> { + <span class="ident">std</span>::<span class="ident">slice</span>::<span class="ident">from_raw_parts_mut</span>( + <span class="ident">kvm_run_ptr</span>.<span class="ident">offset</span>(<span class="ident">io</span>.<span class="ident">data_offset</span> <span class="kw">as</span> <span class="ident">isize</span>), + <span class="ident">io</span>.<span class="ident">count</span> <span class="comment">/* num blocks */</span> <span class="kw">as</span> <span class="ident">usize</span> <span class="op">*</span> <span class="ident">io</span>.<span class="ident">size</span> <span class="comment">/* bytes per block */</span> <span class="kw">as</span> <span class="ident">usize</span>, + ) + }; + + <span class="kw">match</span> <span class="ident">io</span>.<span class="ident">direction</span> <span class="kw">as</span> <span class="ident">u64</span> { + <span class="ident">kvm_sys</span>::<span class="ident">KVM_EXIT_IO_IN</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">KvmExit</span>::<span class="ident">IoIn</span>(<span class="ident">io</span>.<span class="ident">port</span>, <span class="ident">data</span>)), + <span class="ident">kvm_sys</span>::<span class="ident">KVM_EXIT_IO_OUT</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">KvmExit</span>::<span class="ident">IoOut</span>(<span class="ident">io</span>.<span class="ident">port</span>, <span class="ident">data</span>)), + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(), + } + } + <span class="ident">kvm_sys</span>::<span class="ident">KVM_EXIT_MMIO</span> <span class="op">=</span><span class="op">></span> { + <span class="comment">// Safe to use union `mmio` filed, as Kernel instructed us to.</span> + <span class="kw">let</span> <span class="ident">mmio</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">kvm_run</span>.<span class="ident">inner</span>.<span class="ident">mmio</span> }; + <span class="kw">let</span> <span class="ident">len</span> <span class="op">=</span> <span class="ident">mmio</span>.<span class="ident">len</span> <span class="kw">as</span> <span class="ident">usize</span>; + + <span class="kw">match</span> <span class="ident">mmio</span>.<span class="ident">is_write</span> { + <span class="number">0</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">KvmExit</span>::<span class="ident">MmioRead</span>(<span class="ident">mmio</span>.<span class="ident">phys_addr</span>, <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">mmio</span>.<span class="ident">data</span>[..<span class="ident">len</span>])), + <span class="number">1</span> <span class="op">=</span><span class="op">></span> <span class="prelude-val">Ok</span>(<span class="ident">KvmExit</span>::<span class="ident">MmioWrite</span>(<span class="ident">mmio</span>.<span class="ident">phys_addr</span>, <span class="kw-2">&</span><span class="ident">mmio</span>.<span class="ident">data</span>[..<span class="ident">len</span>])), + <span class="kw">_</span> <span class="op">=</span><span class="op">></span> <span class="macro">unreachable</span><span class="macro">!</span>(), + } + } + <span class="ident">r</span> @ <span class="kw">_</span> <span class="op">=</span><span class="op">></span> { + <span class="macro">todo</span><span class="macro">!</span>(<span class="string">"KVM_EXIT_... (exit_reason={}) not implemented!"</span>, <span class="ident">r</span>) + } + } + } +} +</pre></div> +</section><section id="search" class="content hidden"></section><section class="footer"></section><div id="rustdoc-vars" data-root-path="../../" data-current-crate="kvm_rs" data-search-js="../../search-index.js"></div> + <script src="../../main.js"></script><script src="../../source-script.js"></script><script src="../../source-files.js"></script></body></html>
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