From 09e70a0de2ea691518756b99c4d975e7e6814bea Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 8 Apr 2024 21:26:18 +0200 Subject: Adding upstream version 3.20240312.1. Signed-off-by: Daniel Baumann --- ...-84749d83758af6576552046b215b9b7f37f9556b.patch | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 linux-kernel-patches/14-84749d83758af6576552046b215b9b7f37f9556b.patch (limited to 'linux-kernel-patches/14-84749d83758af6576552046b215b9b7f37f9556b.patch') 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 +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 +Signed-off-by: Borislav Petkov +Signed-off-by: Thomas Gleixner +Tested-by: Vitezslav Samel +Tested-by: Ashok Raj +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 + -- cgit v1.2.3