diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 01:37:43 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-07 01:37:43 +0200 |
| commit | fdafe5d1ffe8021704cb389e9823aef4235c88bc (patch) | |
| tree | ce7086715870aa49c8420669f340e2b612f1abba /arch/x86/Kconfig | |
| parent | Merge branch 'x86-topology-for-linus' of git://git.kernel.org/pub/scm/linux/k... (diff) | |
| parent | x86/microcode: Deprecate MICROCODE_OLD_INTERFACE (diff) | |
| download | linux-fdafe5d1ffe8021704cb389e9823aef4235c88bc.tar.xz linux-fdafe5d1ffe8021704cb389e9823aef4235c88bc.zip | |
Merge branch 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading update from Borislav Petkov:
"A nice Intel microcode blob loading cleanup which gets rid of the ugly
memcpy wrappers and switches the driver to use the iov_iter API. By
Jann Horn.
In addition, the /dev/cpu/microcode interface is finally deprecated as
it is inadequate for the same reasons the late microcode loading is"
* 'x86-microcode-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Deprecate MICROCODE_OLD_INTERFACE
x86/microcode: Fix the ancient deprecated microcode loading method
x86/microcode/intel: Refactor Intel microcode blob loading
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9fc73ca17844..0a3cc347143f 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1317,8 +1317,16 @@ config MICROCODE_AMD processors will be enabled. config MICROCODE_OLD_INTERFACE - def_bool y + bool "Ancient loading interface (DEPRECATED)" + default n depends on MICROCODE + ---help--- + DO NOT USE THIS! This is the ancient /dev/cpu/microcode interface + which was used by userspace tools like iucode_tool and microcode.ctl. + It is inadequate because it runs too late to be able to properly + load microcode on a machine and it needs special tools. Instead, you + should've switched to the early loading method with the initrd or + builtin microcode by now: Documentation/x86/microcode.txt config X86_MSR tristate "/dev/cpu/*/msr - Model-specific register support" |