Re: x86/microcode update on systems without INITRD

Markus Trippelsdorf
2015-11-20T07:19:25Z

On 2015.11.19 at 23:58 +0100, Borislav Petkov wrote:
> On Thu, Nov 19, 2015 at 10:55:43PM +0100, Borislav Petkov wrote:
> > On Thu, Nov 19, 2015 at 10:43:01PM +0100, Markus Trippelsdorf wrote:
> > > It looks like the ability to update x86/microcode without using an
> > > initrd was removed this merge window.
> >
> > Whoops, that shouldnt've happened. Will debug it tomorrow and provide a
> > fix.
>
> Anyway, the hunk below seems to work in my guest here, I'll run it
> on the rest of the boxes tomorrow. In case you want to give it a try
> before:

Your patch works fine. Thanks.
But of course it needs this additional patch, otherwise the microcode
loader wouldn't build at all:

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index db3622f22b61..52c6964e24bd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1126,7 +1126,6 @@ config MICROCODE
bool "CPU microcode loading support"
default y
depends on CPU_SUP_AMD || CPU_SUP_INTEL
- depends on BLK_DEV_INITRD
select FW_LOADER
---help---

--
Markus