Which adds the microcode code support. It is not upstream
and probably won't be as the upstream as the x86 maintainers want to
load the microcode blob (in a new format) as part of the GRUB loader:
[http://lists.xen.org/archives/html/xen-devel/2011-12/msg00250.html]
Jan Beulich implemented a patchset for Xen hypervisor which would do this
as part of the mboot loader and define which payload using 'ucode=<number>'.
[http://lists.xen.org/archives/html/xen-devel/2011-12/msg00007.html]
but that is not what the x86 maintainers want to do (as he did not define
a new format and just ingested the raw binary blob). There is also
a feature: "[PATCH] x86/microcode: Allow "ucode=" argument to be negative"
which will pick the microcode as the last payload.
For the time being lets use this old driver that loads the microcode
in the dom0 and pushes it up to the hypervisor - and let the x86 and xen
folks sort this out.
* 'stable/misc' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
x86/microcode: check proper return code.
xen/v86d: Fix /dev/mem to access memory below 1MB
xen: add CPU microcode update driver
xen: add dom0_op hypercall
xen/acpi: Domain0 acpi parser related platform hypercall
Conflicts:
arch/x86/xen/Kconfig
help
Enable statistics output and various tuning options in debugfs.
Enabling this option may incur a significant performance overhead.
-config XEN_DEBUG
- bool "Enable Xen debug checks"
- depends on XEN
- default n
- help
- Enable various WARN_ON checks in the Xen MMU code.
- Enabling this option WILL incur a significant performance overhead.
+
- depends on XEN_DOM0 && MICROCODE
+
+ config MICROCODE_XEN
+ def_bool y
++ depends on XEN_DOM0 && MICROCODE
projects / users / jedix / linux-maple.git / commitdiff