x86/mm/pti: Fix 32 bit PCID check

The check uses the wrong operator and causes false positive
warnings in the kernel log on some systems.

Fixes: 5e8105950a8b3 ('x86/mm/pti: Add Warning when booting on a PCID capable CPU')
Signed-off-by: Joerg Roedel <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: "H . Peter Anvin" <[email protected]>
Cc: [email protected]
Cc: Linus Torvalds <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Brian Gerst <[email protected]>
Cc: David Laight <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Eduardo Valentin <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Andrea Arcangeli <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: Pavel Machek <[email protected]>
Cc: "David H . Gutteridge" <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/mm/pti.c b/arch/x86/mm/pti.c
index ef8db6ffc836..113ba14a03d8 100644
--- a/arch/x86/mm/pti.c
+++ b/arch/x86/mm/pti.c
@@ -549,7 +549,7 @@ void __init pti_init(void)
 	 * supported on 32 bit anyway. To print the warning we need to
 	 * check with cpuid directly again.
 	 */
-	if (cpuid_ecx(0x1) && BIT(17)) {
+	if (cpuid_ecx(0x1) & BIT(17)) {
 		/* Use printk to work around pr_fmt() */
 		printk(KERN_WARNING "\n");
 		printk(KERN_WARNING "************************************************************\n");