On 28/03/2025 10:50, Eric Valette wrote:
On Thu, 27 Mar 2025 16:29:30 +0100 Eric Valette <[email protected]> wrote:
On 26/03/2025 11:31, Eric Valette wrote:

After reboot:


processor       : 15
vendor_id       : AuthenticAMD
cpu family      : 23 = 0x17
model           : 96 = 0x60
model name      : AMD Ryzen 7 4800H with Radeon Graphics
stepping        : 1
microcode       : 0x8600104

New Microcode patches:
       + Family=0x17 Model=0x60 Stepping=0x01: Patch=0x0860010d


Tested with initramfs-tools 147 : same behavior. processor microcode is not updated


As I have seen late loading is supposed to be safe on AMD system, I recompiled kernel with late loading option and tried to load via

echo 1 > /sys/devices/system/cpu/microcode/reload


microcode: Late microcode loading without minimal revision check.
[   62.792507] microcode: You should switch to early loading, if possible.
[   62.793117] microcode: load: updated on 16 primary CPUs with 0 siblings
[   62.793119] microcode: revision: 0xa601206 -> 0xa601209

So the firmware code itself is good but the logic for early loading is broken.


--
Eric Valette

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