[4.15 & 4.14 stable 11/12] x86/microcode: Attempt late loading only when new microcode is present

From: Borislav Petkov commit 2613f36ed965d0e5a595a1d931fd3b480e82d6fd upstream Return UCODE_NEW from the scanning functions to denote that new microcode was found and only then attempt the expensive synchronization dance. Reported-by: Emanuel Czirai

[4.15 & 4.14 stable 11/12] x86/microcode: Attempt late loading only when new microcode is present

From: Borislav Petkov commit 2613f36ed965d0e5a595a1d931fd3b480e82d6fd upstream Return UCODE_NEW from the scanning functions to denote that new microcode was found and only then attempt the expensive synchronization dance. Reported-by: Emanuel Czirai Signed-off-by: Borislav Petkov