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Re: Freeze exception request: x86 microcode support for Wheezy



On Mon, Jul 30, 2012 at 08:22:00PM -0300, Henrique de Moraes Holschuh wrote:
> > 2. fixed per-core  (errors in every core but the BSP, and updates every core
> > at once) -- should be in -stable soon enough.
> 
> The "fixed per-core ABI" makes the kernel refuse the reload command on every
> core but the BSP, and changes the behaviour of a reload command to the BSP
> to "reload every core".  The BSP was chosen, because that's the one core you
> are not allowed to offline.

What happens in multi socket systems? If all cores of a secondary processor are
offline, will the kernel just do a firmware load when one of them gets
reactivated?

> That said, during boot these sysfs interfaces are only used when running a
> custom-built kernel with a built-in microcode driver.  The Debian kernel
> doesn't need it, as a system-wide reload is triggered when the microcode
> module is loaded by the initramfs.

Well, it's also done in the postinst.

I unblocked amd64-microcode nevertheless.

Kind regards
Philipp Kern

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