On Sunday, 3 March 2024 19:14:23 GMT Daniel Frey wrote: > Hi all, > > I've always had problems updating the microcode for my AMD processor. I > have various other Intel-based PCs and this has never been an issue. > > I have confirmed it's not updating: > > > ~ # dmesg | grep -i microcode > [ 0.201619] Zenbleed: please update your microcode for the most > optimal fix > [ 0.748482] microcode: CPU1: patch_level=0x08701030 > [ 0.748482] microcode: CPU0: patch_level=0x08701030 > [ 0.748484] microcode: CPU3: patch_level=0x08701030 > [ 0.748485] microcode: CPU5: patch_level=0x08701030 > [ 0.748485] microcode: CPU4: patch_level=0x08701030 > [ 0.748486] microcode: CPU6: patch_level=0x08701030 > [ 0.748486] microcode: CPU7: patch_level=0x08701030 > [ 0.748487] microcode: CPU8: patch_level=0x08701030 > [ 0.748488] microcode: CPU9: patch_level=0x08701030 > [ 0.748488] microcode: CPU10: patch_level=0x08701030 > [ 0.748488] microcode: CPU11: patch_level=0x08701030 > [ 0.748491] microcode: CPU12: patch_level=0x08701030 > [ 0.748491] microcode: CPU13: patch_level=0x08701030 > [ 0.748492] microcode: CPU14: patch_level=0x08701030 > [ 0.748493] microcode: CPU15: patch_level=0x08701030 > [ 0.748496] microcode: CPU17: patch_level=0x08701030 > [ 0.748496] microcode: CPU18: patch_level=0x08701030 > [ 0.748498] microcode: CPU19: patch_level=0x08701030 > [ 0.748498] microcode: CPU20: patch_level=0x08701030 > [ 0.748500] microcode: CPU21: patch_level=0x08701030 > [ 0.748500] microcode: CPU22: patch_level=0x08701030 > [ 0.748501] microcode: CPU24: patch_level=0x08701030 > [ 0.748501] microcode: CPU23: patch_level=0x08701030 > [ 0.748503] microcode: CPU16: patch_level=0x08701030 > [ 0.748503] microcode: CPU26: patch_level=0x08701030 > [ 0.748503] microcode: CPU27: patch_level=0x08701030 > [ 0.748505] microcode: CPU28: patch_level=0x08701030 > [ 0.748506] microcode: CPU29: patch_level=0x08701030 > [ 0.748507] microcode: CPU30: patch_level=0x08701030 > [ 0.748508] microcode: CPU25: patch_level=0x08701030 > [ 0.748509] microcode: CPU31: patch_level=0x08701030 > [ 0.748511] microcode: CPU2: patch_level=0x08701030 > [ 0.748554] microcode: Microcode Update Driver: v2.2. > > I'm pretty sure I wouldn't be getting a zenbleed warning if it was using > the most recent microcode. > > My processor is this one: > > vendor_id : AuthenticAMD > cpu family : 23 > model : 113 > model name : AMD Ryzen 9 3950X 16-Core Processor > > This leads me to the 17h family. > > I do not use an initramfs as my system doesn't require one. I am not > willing to try an initramfs as my system fully functions without one and > this is not an issue with the Intel machines I have. > > I have properly configured the kernel (gentoo-sources-6.6.13): > > CONFIG_CPU_SUP_AMD=y > CONFIG_EXTRA_FIRMWARE="brcm/BCM20702B0-19ff-0239.hcd > amd-ucode/microcode_amd_fam17h.bin" > CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware" > > The firmware loading is working as it does load the firmware for my > bluetooth adapter with no issues. > > (In the newer kernels microcode loading is enabled by default - no way > to turn it off. All you have to do is select CPU_SUP_AMD apparently. It > works on Intel machines.) > > I've even updated the motherboard BIOS firmware, and while that fixed > all the other issues it apparently does not have patches for zenbleed. > > Does anyone have any idea why this will not update? > > -Dan
It could be AMD have not yet released microcode updates for the community. OEMs receive new microcode first and patch it in their MoBo BIOS/UEFI firmware. Eventually the CPU manufacturers release microcode for older CPUs no longer supported by OEMs. Since you have embedded 'amd-ucode/ microcode_amd_fam17h.bin' in your kernel I don't think there's anything else you can do at this point in time, beyond emerging the latest sys-kernel/linux- firmware and rebooting. PS. I always place the microcode string first in the CONFIG_EXTRA_FIRMWARE= entries, since it should be the fist thing to load by the CPU. I don't know if it would makes any difference, since the whole string of firmwares will be parsed in one go.
signature.asc
Description: This is a digitally signed message part.
