1 files changed, 48 insertions, 0 deletions
diff --git a/linux-kernel-patches/14-84749d83758af6576552046b215b9b7f37f9556b.patch b/linux-kernel-patches/14-84749d83758af6576552046b215b9b7f37f9556b.patch
new file mode 100644
index 0000000..fb1074f
--- /dev/null
+++ b/linux-kernel-patches/14-84749d83758af6576552046b215b9b7f37f9556b.patch
@@ -0,0 +1,48 @@
+From 84749d83758af6576552046b215b9b7f37f9556b Mon Sep 17 00:00:00 2001
+From: Borislav Petkov <bp@suse.de>
+Date: Sat, 21 Apr 2018 10:19:29 +0200
+Subject: x86/microcode/intel: Save microcode patch unconditionally
+
+save_mc_for_early() was a no-op on !CONFIG_HOTPLUG_CPU but the
+generic_load_microcode() path saves the microcode patches it has found into
+the cache of patches which is used for late loading too. Regardless of
+whether CPU hotplug is used or not.
+
+Make the saving unconditional so that late loading can find the proper
+patch.
+
+Reported-by: Vitezslav Samel <vitezslav@samel.cz>
+Signed-off-by: Borislav Petkov <bp@suse.de>
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Tested-by: Vitezslav Samel <vitezslav@samel.cz>
+Tested-by: Ashok Raj <ashok.raj@intel.com>
+Cc: stable@vger.kernel.org
+Link: http://lkml.kernel.org/r/20180418081140.GA2439@pc11.op.pod.cz
+Link: https://lkml.kernel.org/r/20180421081930.15741-1-bp@alien8.de
+---
+ arch/x86/kernel/cpu/microcode/intel.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
+index 32b8e57..1c2cfa0 100644
+--- a/arch/x86/kernel/cpu/microcode/intel.c
++++ b/arch/x86/kernel/cpu/microcode/intel.c
+@@ -485,7 +485,6 @@ static void show_saved_mc(void)
+  */
+ static void save_mc_for_early(u8 *mc, unsigned int size)
+ {
+-#ifdef CONFIG_HOTPLUG_CPU
+ 	/* Synchronization during CPU hotplug. */
+ 	static DEFINE_MUTEX(x86_cpu_microcode_mutex);
+ 
+@@ -495,7 +494,6 @@ static void save_mc_for_early(u8 *mc, unsigned int size)
+ 	show_saved_mc();
+ 
+ 	mutex_unlock(&x86_cpu_microcode_mutex);
+-#endif
+ }
+ 
+ static bool load_builtin_intel_microcode(struct cpio_data *cp)
+-- 
+cgit v1.1
+