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| author | Borislav Petkov <bp@suse.de> | 2016-06-06 17:10:43 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-06-08 11:04:19 +0200 |
| commit | 4b703305d98bf7350d4b2953ee39a3aa2eeb1778 (patch) | |
| tree | a0d54efdf01453b0a262109e517cc6cd69e773f5 /arch/x86/mm/init.c | |
| parent | 6c5456474e7f0b63be66d44b0595001e2a8b44d5 (diff) | |
| download | op-kernel-dev-4b703305d98bf7350d4b2953ee39a3aa2eeb1778.zip op-kernel-dev-4b703305d98bf7350d4b2953ee39a3aa2eeb1778.tar.gz | |
x86/microcode: Fix suspend to RAM with builtin microcode
Usually, after we have found the proper microcode blob for the current
machine, we stash it away for later use with save_microcode_in_initrd().
However, with builtin microcode which doesn't come from the initrd, we
don't call that function because CONFIG_BLK_DEV_INITRD=n and even if
set, we don't have a valid initrd.
In order to fix this, let's make save_microcode_in_initrd() an
fs_initcall which runs before rootfs_initcall() as this was the time it
was called previously through:
rootfs_initcall(populate_rootfs)
|-> free_initrd()
|-> free_initrd_mem()
|-> save_microcode_in_initrd()
Also, we make it run independently from initrd functionality being
present or not.
And since it is called in the microcode loader only now, we can also
make it static.
Reported-and-tested-by: Jim Bos <jim876@xs4all.nl>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> # v4.6
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1465225850-7352-3-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/init.c')
| -rw-r--r-- | arch/x86/mm/init.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 372aad2..dffd162 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -696,13 +696,6 @@ void free_initmem(void) void __init free_initrd_mem(unsigned long start, unsigned long end) { /* - * Remember, initrd memory may contain microcode or other useful things. - * Before we lose initrd mem, we need to find a place to hold them - * now that normal virtual memory is enabled. - */ - save_microcode_in_initrd(); - - /* * end could be not aligned, and We can not align that, * decompresser could be confused by aligned initrd_end * We already reserve the end partial page before in |
