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x86: ucode-amd: Load ucode-patches once and not separately of each CPU

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This also implies that corresponding log messages, e.g.

  platform microcode: firmware: requesting amd-ucode/microcode_amd.bin

show up only once on module load and not when ucode is updated
for each CPU.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: dimm <dmitry.adamushko@gmail.com>
LKML-Reference: <20091110110723.GH30802@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andreas Herrmann 2009-11-10 12:07:23 +01:00 • committed by Ingo Molnar
commit d1c84f79a6
3 changed files with 25 additions and 7 deletions
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6
arch/x86/kernel/microcode_core.c
View file

@ -520,6 +520,9 @@ static int __init microcode_init(void)
return PTR_ERR(microcode_pdev);
}
if (microcode_ops->init)
microcode_ops->init(&microcode_pdev->dev);
get_online_cpus();
mutex_lock(&microcode_mutex);
@ -563,6 +566,9 @@ static void __exit microcode_exit(void)
platform_device_unregister(microcode_pdev);
if (microcode_ops->fini)
microcode_ops->fini();
microcode_ops = NULL;
pr_info("Microcode Update Driver: v" MICROCODE_VERSION " removed.\n");