x86/MCE/AMD: Turn off MC4_MISC thresholding on all family 0x15 models

BugLink: https://bugs.launchpad.net/bugs/1796443
MC4_MISC thresholding is not supported on all family 0x15 processors,
hence skip the x86_model check when applying the quirk.

 [ bp: massage commit message. ]

Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/1547106849-3476-2-git-send-email-shirish.s@amd.com
(backported from commit c95b323dcd3598dd7ef5005d6723c1ba3b801093)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 5dafcf9bc1a24d0782d8bd8b9019ffc81b3962d9..6b9ed8e31066dc375c855ff4dbdd1b7a0a852107 100644 (file)
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1631,11 +1631,10 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
                        mce_flags.overflow_recov = 1;
 
                /*
-                * Turn off MC4_MISC thresholding banks on those models since
+                * Turn off MC4_MISC thresholding banks on all models since
                 * they're not supported there.
                 */
-               if (c->x86 == 0x15 &&
-                   (c->x86_model >= 0x10 && c->x86_model <= 0x1f)) {
+               if (c->x86 == 0x15) {
                        int i;
                        u64 hwcr;
                        bool need_toggle;