On Mon, Jul 24, 2023 at 03:17:26PM -0700, Courtney wrote: > $ pkg_info | grep amd > amd-firmware-20230719 microcode update binaries for AMD CPUs
It by no means covers all zen 2 models. See /etc/firmware/amd/README Family=0x17 Model=0x31 Stepping=0x00: Patch=0x0830107a Length=3200 bytes Family=0x17 Model=0xa0 Stepping=0x00: Patch=0x08a00008 Length=3200 bytes 17-31-00 Rome/Castle Peak 0x0830107a 17-a0-00 Mendocino 0x08a00008 The family-model-stepping is printed at the end of cpu lines in dmesg. Zen2 models missing include: 17-60-01 Renoir 0x0860010b 17-68-01 Lucienne 0x08608105 17-71-00 Matisse 0x08701032 17-90-02 Van Gogh The known good patch levels are used by xen and linux. But the microcode for Renoir, Lucienne and Matisse is not available as far as I can tell. An updated kernel will set DE_CFG bit 9 on all Zen2 models, which does not require new microcode. > > I however, do not have the test code to check if you are impacted by > Zenbleed or not. There is test code, but it only compiles on Linux. > > Theo de Raadt also put out info if you are doing syspatch for the new > errata. > > https://marc.info/?l=openbsd-tech&m=169021508718971&w=2 > > Courtney > > On 7/23/23 23:02, Christer Solskogen wrote: > > I just saw https://undeadly.org/cgi?action=article;sid=20230723185853 > > and was wondering how I can check if it works? Does or should the > > microcode update show up in dmesg or in some other log? > > > >
