The following commit has been merged into the x86/microcode branch of tip: Commit-ID: 811ae8ba6dca6b91a3ceccf9d40b98818cc4f400 Gitweb: https://git.kernel.org/tip/811ae8ba6dca6b91a3ceccf9d40b98818cc4f400 Author: Borislav Petkov <[email protected]> AuthorDate: Sat, 24 Aug 2019 10:01:53 +02:00 Committer: Borislav Petkov <[email protected]> CommitterDate: Tue, 01 Oct 2019 16:06:35 +02:00
x86/microcode/intel: Issue the revision updated message only on the BSP ... in order to not pollute dmesg with a line for each updated microcode engine. Signed-off-by: Borislav Petkov <[email protected]> Cc: Ashok Raj <[email protected]> Cc: Boris Ostrovsky <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jon Grimm <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Mihai Carabas <[email protected]> Cc: [email protected] Cc: Thomas Gleixner <[email protected]> Cc: Tom Lendacky <[email protected]> Cc: x86-ml <[email protected]> Link: https://lkml.kernel.org/r/[email protected] --- arch/x86/kernel/cpu/microcode/intel.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c index ce799cf..6a99535 100644 --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -791,6 +791,7 @@ static enum ucode_state apply_microcode_intel(int cpu) { struct ucode_cpu_info *uci = ucode_cpu_info + cpu; struct cpuinfo_x86 *c = &cpu_data(cpu); + bool bsp = c->cpu_index == boot_cpu_data.cpu_index; struct microcode_intel *mc; enum ucode_state ret; static int prev_rev; @@ -836,7 +837,7 @@ static enum ucode_state apply_microcode_intel(int cpu) return UCODE_ERROR; } - if (rev != prev_rev) { + if (bsp && rev != prev_rev) { pr_info("updated to revision 0x%x, date = %04x-%02x-%02x\n", rev, mc->hdr.date & 0xffff, @@ -852,7 +853,7 @@ out: c->microcode = rev; /* Update boot_cpu_data's revision too, if we're on the BSP: */ - if (c->cpu_index == boot_cpu_data.cpu_index) + if (bsp) boot_cpu_data.microcode = rev; return ret;
