Re: AMD microcode loading broken on 32 bit

[Boris Ostrovsky]

On 01/21/2014 01:25 PM, Borislav Petkov wrote:
> On Tue, Jan 21, 2014 at 12:55:53PM -0500, Boris Ostrovsky wrote:
> >          cat $(AMD_UCODE_PATH)/* >
> > ucode_initrd/kernel/x86/microcode/AuthenticAMD.bin
> >          (cd ucode_initrd;find . | cpio -o -H newc >
> > ../$(DISTDIR)/common/ucode_initrd.cpio)
> >          ...
> >          cat $(DISTDIR)/common/ucode_initrd.cpio \
> >              $(DISTDIR)/common/_initramfs.cpio.gz > \
> >              $(DISTDIR)/common/initramfs.cpio.gz
> >
> > and as I just discovered, with a little twist: apparently
> > AMD_UCODE_PATH points to Intel microcode.
> LOL!
>
> @hpa: in case you were wondering whether Intel ucode works on AMD - it
> doesn't! :-)
>
> > So we clearly screwed up on our end but I'd think that we shouldn't
> > crash when this happens.
> Yes, we shouldn't. I'll try to reproduce it here.

So I tried this on a "good" system and I am pretty sure this is broken. 
I don't
have any microcode in initrd and I am still dying in load_microcode_amd().

I didn't dig any further but if you can't reproduce this I can look at 
what is
a NULL and why. (I suspect it's the 'container' variable).

-boris
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/