Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH tip-urgent 4/6] x86/microcode: Initialize the driver late when facilities are up | Date | Mon, 23 Nov 2015 11:12:24 +0100 |
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From: Borislav Petkov <bp@suse.de>
Running microcode_init() from setup_arch() is a bad idea because not even kmalloc() is ready at that point and the loader does all kinds of allocations and init/registration with various subsystems.
Make it a late initcall when required facilities are initialized so that the microcode driver initialization can succeed too.
Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Borislav Petkov <bp@suse.de> --- arch/x86/kernel/cpu/microcode/core.c | 1 + arch/x86/kernel/setup.c | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index 7fc27f1cca58..b3e94ef461fd 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -698,3 +698,4 @@ int __init microcode_init(void) return error; } +late_initcall(microcode_init); diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 29db25f9a745..d2bbe343fda7 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1250,8 +1250,6 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled(EFI_BOOT)) efi_apply_memmap_quirks(); #endif - - microcode_init(); } #ifdef CONFIG_X86_32 -- 2.3.5
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