x86/microcode/intel: Issue the revision updated message only on the BSP (811ae8ba) · Commits · 戴 / test

... in order to not pollute dmesg with a line for each updated microcode engine. Signed-off-by:

Borislav Petkov <bp@suse.de> Cc: Ashok Raj <ashok.raj@intel.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jon Grimm <Jon.Grimm@amd.com> Cc: kanth.ghatraju@oracle.com Cc: konrad.wilk@oracle.com Cc: Mihai Carabas <mihai.carabas@oracle.com> Cc: patrick.colp@oracle.com Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: x86-ml <x86@kernel.org> Link: https://lkml.kernel.org/r/20190824085341.GC16813@zn.tnic

arch/x86/kernel/cpu/microcode/intel.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -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;

Admin message