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Diffstat (limited to 'src/kvm_rs/vcpu.rs.html')
| -rw-r--r-- | src/kvm_rs/vcpu.rs.html | 337 |
1 files changed, 235 insertions, 102 deletions
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class="sub-logo-container" href="../../kvm_rs/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><nav class="sub"><div class="theme-picker hidden"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="22" height="22" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><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 id="53"> 53</span> -<span id="54"> 54</span> -<span id="55"> 55</span> -<span id="56"> 56</span> -<span id="57"> 57</span> -<span id="58"> 58</span> -<span id="59"> 59</span> -<span id="60"> 60</span> -<span id="61"> 61</span> -<span id="62"> 62</span> -<span id="63"> 63</span> -<span id="64"> 64</span> -<span id="65"> 65</span> -<span id="66"> 66</span> -<span id="67"> 67</span> -<span id="68"> 68</span> -<span id="69"> 69</span> -<span id="70"> 70</span> -<span id="71"> 71</span> -<span id="72"> 72</span> -<span id="73"> 73</span> -<span id="74"> 74</span> -<span id="75"> 75</span> -<span id="76"> 76</span> -<span id="77"> 77</span> -<span id="78"> 78</span> -<span id="79"> 79</span> -<span 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title="help">?</button><div id="settings-menu" tabindex="-1"> + <a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div> + </div></form></nav></div><section id="main-content" class="content"><div class="example-wrap"><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 id="53">53</span> +<span id="54">54</span> +<span id="55">55</span> +<span id="56">56</span> +<span id="57">57</span> +<span id="58">58</span> +<span id="59">59</span> +<span id="60">60</span> +<span id="61">61</span> +<span id="62">62</span> +<span id="63">63</span> +<span id="64">64</span> +<span id="65">65</span> +<span id="66">66</span> +<span id="67">67</span> +<span id="68">68</span> +<span id="69">69</span> +<span id="70">70</span> +<span id="71">71</span> +<span id="72">72</span> +<span id="73">73</span> +<span id="74">74</span> +<span id="75">75</span> +<span id="76">76</span> +<span id="77">77</span> +<span id="78">78</span> +<span id="79">79</span> +<span id="80">80</span> +<span id="81">81</span> +<span id="82">82</span> +<span id="83">83</span> +<span id="84">84</span> +<span id="85">85</span> +<span id="86">86</span> +<span id="87">87</span> +<span id="88">88</span> +<span id="89">89</span> +<span id="90">90</span> +<span id="91">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> @@ -139,6 +140,72 @@ <span id="134">134</span> <span id="135">135</span> <span id="136">136</span> +<span id="137">137</span> +<span id="138">138</span> +<span id="139">139</span> +<span id="140">140</span> +<span id="141">141</span> +<span id="142">142</span> +<span id="143">143</span> +<span id="144">144</span> +<span id="145">145</span> +<span id="146">146</span> +<span id="147">147</span> +<span id="148">148</span> +<span id="149">149</span> +<span id="150">150</span> +<span id="151">151</span> +<span id="152">152</span> +<span id="153">153</span> +<span id="154">154</span> +<span id="155">155</span> +<span id="156">156</span> +<span id="157">157</span> +<span id="158">158</span> +<span id="159">159</span> +<span id="160">160</span> +<span id="161">161</span> +<span id="162">162</span> +<span id="163">163</span> +<span id="164">164</span> +<span id="165">165</span> +<span id="166">166</span> +<span id="167">167</span> +<span id="168">168</span> +<span id="169">169</span> +<span id="170">170</span> +<span id="171">171</span> +<span id="172">172</span> +<span id="173">173</span> +<span id="174">174</span> +<span id="175">175</span> +<span id="176">176</span> +<span id="177">177</span> +<span id="178">178</span> +<span id="179">179</span> +<span id="180">180</span> +<span id="181">181</span> +<span id="182">182</span> +<span id="183">183</span> +<span id="184">184</span> +<span id="185">185</span> +<span id="186">186</span> +<span id="187">187</span> +<span id="188">188</span> +<span id="189">189</span> +<span id="190">190</span> +<span id="191">191</span> +<span id="192">192</span> +<span id="193">193</span> +<span id="194">194</span> +<span id="195">195</span> +<span id="196">196</span> +<span id="197">197</span> +<span id="198">198</span> +<span id="199">199</span> +<span id="200">200</span> +<span id="201">201</span> +<span id="202">202</span> </pre><pre class="rust"><code><span class="doccomment">//! VCPU system ioctls.</span> <span class="kw">use</span> <span class="ident">std::fs</span>; @@ -159,6 +226,7 @@ <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="ident">Debug</span>(<span class="ident">u64</span>), } <span class="doccomment">/// Wrapper for VCPU ioctls.</span> @@ -227,6 +295,65 @@ .<span class="ident">map</span>(<span class="op">|</span><span class="kw">_</span><span class="op">|</span> ()) } + <span class="doccomment">/// Get the debug registers with the [`KVM_GET_DEBUGREGS`][kvm-get-debugregs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_debugregs`](crate::kvm_sys::kvm_debugregs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-get-debugregs]:</span> + <span class="doccomment">/// https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-get-debugregs</span> + <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86_64"</span>)]</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_debugregs</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">io::Result</span><span class="op"><</span><span class="ident">kvm_sys::kvm_debugregs</span><span class="op">></span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">dregs</span> <span class="op">=</span> <span class="ident">kvm_sys::kvm_debugregs::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::KVM_GET_DEBUGREGS</span>, + <span class="kw-2">&mut</span> <span class="ident">dregs</span> <span class="kw">as</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">dregs</span>) + } + + <span class="doccomment">/// Set the debug registers with the [`KVM_SET_DEBUGREGS`][kvm-set-debugregs] ioctl in form of</span> + <span class="doccomment">/// [`kvm_debugregs`](crate::kvm_sys::kvm_debugregs).</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-set-debugregs]:</span> + <span class="doccomment">/// https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-set-debugregs</span> + <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86_64"</span>)]</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_debugregs</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">dregs</span>: <span class="ident">kvm_sys::kvm_debugregs</span>) -> <span class="ident">io::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::KVM_SET_DEBUGREGS</span>, + <span class="kw-2">&</span><span class="ident">dregs</span> <span class="kw">as</span> <span class="kw-2">*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">/// Enable or disable guest single steppig (debug) with the</span> + <span class="doccomment">/// [`KVM_GUESTDBG_ENABLE`][kvm-guest-debug] ioctl.</span> + <span class="doccomment">///</span> + <span class="doccomment">/// [kvm-guest-debug]: https://www.kernel.org/doc/html/latest/virt/kvm/api.html#kvm-set-guest-debug</span> + <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86_64"</span>)]</span> + <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_single_step</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">enable</span>: <span class="ident">bool</span>) -> <span class="ident">io::Result</span><span class="op"><</span>()<span class="op">></span> { + <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">dbg</span> <span class="op">=</span> <span class="ident">kvm_sys::kvm_guest_debug::default</span>(); + + <span class="kw">if</span> <span class="ident">enable</span> { + <span class="comment">// Enable guest debugging and single stepping.</span> + <span class="ident">dbg</span>.<span class="ident">control</span> <span class="op">=</span> <span class="ident">kvm_sys::KVM_GUESTDBG_ENABLE</span> <span class="op">|</span> <span class="ident">kvm_sys::KVM_GUESTDBG_SINGLESTEP</span>; + } + + <span class="comment">// Initialize debug registers based on current VCPUs debug register values.</span> + <span class="kw">let</span> <span class="ident">dregs</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_debugregs</span>()<span class="question-mark">?</span>; + <span class="ident">dbg</span>.<span class="ident">arch</span>.<span class="ident">debugreg</span>[<span class="number">0</span>..<span class="number">4</span>].<span class="ident">copy_from_slice</span>(<span class="kw-2">&</span><span class="ident">dregs</span>.<span class="ident">db</span>); + <span class="comment">// DR4-DR5 are reserved.</span> + <span class="ident">dbg</span>.<span class="ident">arch</span>.<span class="ident">debugreg</span>[<span class="number">6</span>] <span class="op">=</span> <span class="ident">dregs</span>.<span class="ident">dr6</span>; + <span class="ident">dbg</span>.<span class="ident">arch</span>.<span class="ident">debugreg</span>[<span class="number">7</span>] <span class="op">=</span> <span class="ident">dregs</span>.<span class="ident">dr7</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::KVM_SET_GUEST_DEBUG</span>, + <span class="kw-2">&</span><span class="ident">dbg</span> <span class="kw">as</span> <span class="kw-2">*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> @@ -269,6 +396,12 @@ <span class="kw">_</span> => <span class="macro">unreachable!</span>(), } } + <span class="ident">kvm_sys::KVM_EXIT_DEBUG</span> => { + <span class="comment">// Safe to use union `debug` field, as Kernel instructed us to.</span> + <span class="kw">let</span> <span class="ident">debug</span> <span class="op">=</span> <span class="kw">unsafe</span> { <span class="ident">kvm_run</span>.<span class="ident">inner</span>.<span class="ident">debug</span> }; + + <span class="prelude-val">Ok</span>(<span class="ident">KvmExit::Debug</span>(<span class="ident">debug</span>.<span class="ident">pc</span>)) + } <span class="ident">r</span> @ <span class="kw">_</span> => { <span class="macro">todo!</span>(<span class="string">"KVM_EXIT_... (exit_reason={}) not implemented!"</span>, <span class="ident">r</span>) } @@ -276,5 +409,5 @@ } } </code></pre></div> -</section><section id="search" class="content hidden"></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="kvm_rs" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.60.0 (7737e0b5c 2022-04-04)" ></div> +</section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="kvm_rs" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.63.0 (4b91a6ea7 2022-08-08)" ></div> </body></html>
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