x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier
authorAndy Lutomirski <luto@kernel.org>
Sun, 17 Sep 2017 16:03:50 +0000 (09:03 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 23 Jan 2018 18:50:11 +0000 (19:50 +0100)
commit416f66509fce36e128ea2d9e62739a21f1a1d04d
treeca4d35ffa8af7803e72dde4c5b356ed81ff96b79
parent642ce1bb5ea64b1d036dff04a005d9bbe28ab5b4
x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier

commit b8b7abaed7a49b350f8ba659ddc264b04931d581 upstream.

Otherwise we might have the PCID feature bit set during cpu_init().

This is just for robustness.  I haven't seen any actual bugs here.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: cba4671af755 ("x86/mm: Disable PCID on 32-bit kernels")
Link: http://lkml.kernel.org/r/b16dae9d6b0db5d9801ddbebbfd83384097c61f3.1505663533.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kernel/cpu/bugs.c
arch/x86/kernel/cpu/common.c