Messages in this thread | | | Date | Thu, 4 Apr 2019 18:47:41 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86/microcode: Refactor Intel microcode loading |
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On Thu, Apr 04, 2019 at 06:31:37PM +0200, Jann Horn wrote: > Uuuh. I *definitely* tested this. I ran this yesterday evening on my > home machine, on top of commit > 14c741de93861749dfb60b4964028541f5c506ca from Linus' tree, plus two > cherry-picked fixes for drm/ttm. I specifically made sure that I had > the old microcode version before reloading these ways and I had the > new version after reloading. And the verbose dmesg logs also looked > okay.
How did you check the microcode revision before and after? /proc/cpuinfo?
Because that old method doesn't say anything in dmesg if there's no debugging output, only the iucode_tool says something like the below if you enable verbose output:
# iucode-tool -v --kernel=/dev/cpu/microcode /lib/firmware/intel-ucode/06-3a-09 iucode-tool: processed 1 valid microcode(s), 1 signature(s), 1 unique signature(s) iucode-tool: selected 1 microcode(s), 1 signature(s) iucode-tool: Uploading selected microcodes to: /dev/cpu/microcode iucode-tool: /dev/cpu/microcode: 1 microcode entries uploaded, 13312 bytes
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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