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diff --git a/docs/hcl/r400.html b/docs/hcl/r400.html index 1c8cca70..d1d103ce 100644 --- a/docs/hcl/r400.html +++ b/docs/hcl/r400.html @@ -45,6 +45,30 @@ <div class="section"> + <h2 id="compatibility_noblobs">Compatibility (without blobs)</h2> + + <div class="subsection"> + <h3 id="hwvirt">Hardware virtualization (vt-x)</h3> + <p> + The R400, when run without CPU microcode updates in coreboot, currently kernel panics + if running QEMU with vt-x enabled on 2 cores for the guest. With a single core enabled + for the guest, the guest panics (but the host is fine). Working around this in QEMU + might be possible; if not, software virtualization should work fine (it's just slower). + </p> + <p> + On GM45 hardware (with libreboot), make sure that the <i>kvm</i> and <i>kvm_intel</i> kernel modules + are not loaded, when using QEMU. + </p> + <p> + The following errata datasheet from Intel might help with investigation: + <a href="http://download.intel.com/design/mobile/specupdt/320121.pdf">http://download.intel.com/design/mobile/specupdt/320121.pdf</a> + </p> + </div> + + </div> + + <div class="section"> + <p> The R400 is almost identical to the X200, code-wise. See <a href="x200.html">x200.html</a>. </p> |