On Tuesday, 9 January 2018 07:31:35 GMT Mick wrote: > On Tuesday, 9 January 2018 00:15:03 GMT Peter Humphrey wrote: > > On Monday, 8 January 2018 10:29:41 GMT Max Zettlmeißl wrote: > > > > How do you build the microcode into the kernel? The only > > > > place I can see to do that in menuconfig is under Device Drivers; > > > > there's no such field under Firmware. > > > > > > The Device Drivers section is exactly where the microcode is included. > > > CONFIG_EXTRA_FIRMWARE is the relevant symbol. > > > > Right. So which of the 95 files under /lib/firmware/intel-ucode do I > > specify? That's in addition to the 14 files I have for my amdgpu. > > There may be a cleverer way, but this is how I have been doing it. > > Install sys-apps/iucode_tool. Run: > > # iucode_tool -S > > It will report the microcode signature for your CPU. For example, one of > mine: > > iucode_tool: system has processor(s) with signature 0x000106e5 > > > (Re)emerge sys-firmware/intel-microcode and capture all its output. Then > search for the above signature, again from the same CPU, as an example, > this matches: > > intel-ucode/06-1e-05 > signature: 0x106e5 <== > flags: 0x13 > revision: 0x07 > date: 2013-08-20 > size: 7168 > > > Add the first line above in your CONFIG_EXTRA_FIRMWARE and rebuild your > kernel.
Thanks Mick. After asking that, I discovered this web page, which confirms your method: https://wiki.gentoo.org/wiki/Intel_microcode . Then I found that I was already loading the right microcode, though I really have no idea where I'd got the information from. Thanks to the others who answered as well. -- Regards, Peter.
