redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

x86/microcode: Fix the ancient deprecated microcode loading method 

Commit

  2613f36ed9 ("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: 2613f36ed9 ("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
hifive-unleashed-5.2
Borislav Petkov 2019-04-04 22:14:07 +02:00
parent 7e94a7b659
commit 24613a04ad
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kernel/cpu/microcode/core.c
View File

@ -418,8 +418,9 @@ 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;