Commit 24613a04 authored Apr 04, 2019 by Borislav Petkov

x86/microcode: Fix the ancient deprecated microcode loading method



Commit

  2613f36e ("x86/microcode: Attempt late loading only when new microcode is present")

added the new define UCODE_NEW to denote that an update should happen
only when newer microcode (than installed on the system) has been found.

But it missed adjusting that for the old /dev/cpu/microcode loading
interface. Fix it.

Fixes: 2613f36e ("x86/microcode: Attempt late loading only when new microcode is present")
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jann Horn <jannh@google.com>
Link: https://lkml.kernel.org/r/20190405133010.24249-3-bp@alien8.de

parent 7e94a7b6

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

+2 −1

Original line number	Diff line number	Diff line
		@@ -418,9 +418,10 @@ static int do_microcode_update(const void __user *buf, size_t size)
		if (ustate == UCODE_ERROR) {
		error = -1;
		break;
		} else if (ustate == UCODE_OK)
		} else if (ustate == UCODE_NEW) {
		apply_microcode_on_target(cpu);
		}
		}

		return error;
		}

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