[PATCH] x86 microcode: add sysfs and hotplug support
Add sysfs support. Currently each CPU has three microcode related
attributes. One is 'version' which shows current ucode version of CPU.
Tools can use the attribute do validation or show CPU ucode status. one is
'reload' which allows manually reloading ucode. Another is
'processor_flags', which exports processor flags, so we can write tools to
check if CPU has latest ucode. Also add suspend/resume and CPU hotplug
support.
[akpm@osdl.org: cleanups, build fix]
[bunk@stusta.de: Kconfig fixes]
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tigran Aivazian <tigran@veritas.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index ab4cbcb..32ae137 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -171,6 +171,7 @@
config MICROCODE
tristate "/dev/cpu/microcode - Intel CPU microcode support"
+ select FW_LOADER
---help---
If you say Y here the 'File systems' section, you will be
able to update the microcode on Intel processors. You will