Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / arch / x86 / Kconfig

diff --git a/kernel/arch/x86/Kconfig b/kernel/arch/x86/Kconfig
index d8a1650..6ee1dd0 100644 (file)
--- a/kernel/arch/x86/Kconfig
+++ b/kernel/arch/x86/Kconfig
@@ -1130,22 +1130,23 @@ 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---
-
          If you say Y here, you will be able to update the microcode on
-         certain Intel and AMD processors. The Intel support is for the
-         IA32 family, e.g. Pentium Pro, Pentium II, Pentium III, Pentium 4,
-         Xeon etc. The AMD support is for families 0x10 and later. You will
-         obviously need the actual microcode binary data itself which is not
-         shipped with the Linux kernel.
-
-         This option selects the general module only, you need to select
-         at least one vendor specific module as well.
-
-         To compile this driver as a module, choose M here: the module
-         will be called microcode.
+         Intel and AMD processors. The Intel support is for the IA32 family,
+         e.g. Pentium Pro, Pentium II, Pentium III, Pentium 4, Xeon etc. The
+         AMD support is for families 0x10 and later. You will obviously need
+         the actual microcode binary data itself which is not shipped with
+         the Linux kernel.
+
+         The preferred method to load microcode from a detached initrd is described
+         in Documentation/x86/early-microcode.txt. For that you need to enable
+         CONFIG_BLK_DEV_INITRD in order for the loader to be able to scan the
+         initrd for microcode blobs.
+
+         In addition, you can build-in the microcode into the kernel. For that you
+         need to enable FIRMWARE_IN_KERNEL and add the vendor-supplied microcode
+         to the CONFIG_EXTRA_FIRMWARE config option.
 
 config MICROCODE_INTEL
        bool "Intel microcode loading support"