[Pkg-xen-devel] Bug#785187: Bug#785187: xen-hypervisor-4.5-amd64: Option ucode=scan is not working

[Stephan Seitz]

On Tue, May 19, 2015 at 12:47:51PM +0100, Ian Campbell wrote:
>The reconcatenate bit is easy, just:
>   $ cat initrd.ucode initrd.real > initrd.img
>With initrd.real extracted above.
>
>initrd.ucode creation I'm a little unsure about but something like:
>
>$ mkdir initrd.ucode.tree
>$ cd initrd.ucode.tree
>$ cat /boot/initrd.img | cpio -id
>$ find
>.
>./kernel
>./kernel/x86
>./kernel/x86/microcode
>./kernel/x86/microcode/GenuineIntel.bin
>$ find | cpio -o -H newc > ../initrd.ucode

That interesting. Your steps lead to an initrd with the same size as the 
initrd created by the Debian tools. But the new one is working with 
ucode=scan, the old one isn’t.

>BTW, could you please post the output "xl dmesg" for the failing case, I
>should have asked for that right at the start in case it contains
>anything of use.

I can do this, but neither „xl dmesg” nor „dmesg” are telling anything 
about microcode. Are there ways to make the hypervisor more verbose?

Shade and sweet water!
	
	Stephan

-- 
| Stephan Seitz          E-Mail: stse at fsing.rootsland.net |
| Public Keys: http://fsing.rootsland.net/~stse/keys.html |
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