This is a note to let you know that I've just added the patch titled
x86/microcode: Get rid of struct apply_microcode_ctx
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: x86-microcode-get-rid-of-struct-apply_microcode_ctx.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 854857f5944c59a881ff607b37ed9ed41d031a3b Mon Sep 17 00:00:00 2001
From: Borislav Petkov bp@suse.de Date: Wed, 28 Feb 2018 11:28:40 +0100 Subject: x86/microcode: Get rid of struct apply_microcode_ctx
From: Borislav Petkov bp@suse.de
commit 854857f5944c59a881ff607b37ed9ed41d031a3b upstream.
It is a useless remnant from earlier times. Use the ucode_state enum directly.
No functional change.
Signed-off-by: Borislav Petkov bp@suse.de Signed-off-by: Thomas Gleixner tglx@linutronix.de Tested-by: Tom Lendacky thomas.lendacky@amd.com Tested-by: Ashok Raj ashok.raj@intel.com Cc: Arjan Van De Ven arjan.van.de.ven@intel.com Link: https://lkml.kernel.org/r/20180228102846.13447-2-bp@alien8.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/x86/kernel/cpu/microcode/core.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-)
--- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -373,26 +373,23 @@ static int collect_cpu_info(int cpu) return ret; }
-struct apply_microcode_ctx { - enum ucode_state err; -}; - static void apply_microcode_local(void *arg) { - struct apply_microcode_ctx *ctx = arg; + enum ucode_state *err = arg;
- ctx->err = microcode_ops->apply_microcode(smp_processor_id()); + *err = microcode_ops->apply_microcode(smp_processor_id()); }
static int apply_microcode_on_target(int cpu) { - struct apply_microcode_ctx ctx = { .err = 0 }; + enum ucode_state err; int ret;
- ret = smp_call_function_single(cpu, apply_microcode_local, &ctx, 1); - if (!ret) - ret = ctx.err; - + ret = smp_call_function_single(cpu, apply_microcode_local, &err, 1); + if (!ret) { + if (err == UCODE_ERROR) + ret = 1; + } return ret; }
Patches currently in stable-queue which might be from bp@suse.de are
queue-4.14/x86-microcode-intel-check-microcode-revision-before-updating-sibling-threads.patch queue-4.14/x86-microcode-attempt-late-loading-only-when-new-microcode-is-present.patch queue-4.14/x86-microcode-propagate-return-value-from-updating-functions.patch queue-4.14/x86-cpu-check-cpu-feature-bits-after-microcode-upgrade.patch queue-4.14/x86-microcode-intel-writeback-and-invalidate-caches-before-updating-microcode.patch queue-4.14/x86-microcode-intel-look-into-the-patch-cache-first.patch queue-4.14/edac-mv64x60-fix-an-error-handling-path.patch queue-4.14/x86-microcode-request-microcode-on-the-bsp.patch queue-4.14/x86-microcode-get-rid-of-struct-apply_microcode_ctx.patch queue-4.14/x86-microcode-fix-cpu-synchronization-routine.patch queue-4.14/x86-microcode-synchronize-late-microcode-loading.patch queue-4.14/x86-microcode-do-not-upload-microcode-if-cpus-are-offline.patch queue-4.14/x86-cpu-add-a-microcode-loader-callback.patch