return false;
}
+/*
+ * Some Zen-based Instruction Fetch Units set EIPV=RIPV=0 on poison consumption
+ * errors. This means mce_gather_info() will not save the "ip" and "cs" registers.
+ *
+ * However, the context is still valid, so save the "cs" register for later use.
+ *
+ * The "ip" register is truly unknown, so don't save it or fixup EIPV/RIPV.
+ *
+ * The Instruction Fetch Unit is at MCA bank 1 for all affected systems.
+ */
+static __always_inline void quirk_zen_ifu(int bank, struct mce *m, struct pt_regs *regs)
+{
+ if (bank != 1)
+ return;
+ if (!(m->status & MCI_STATUS_POISON))
+ return;
+
+ m->cs = regs->cs;
+}
+
/*
* Do a quick check if any of the events requires a panic.
* This decides if we keep the events around or clear them.
if (mce_flags.snb_ifu_quirk)
quirk_sandybridge_ifu(i, m, regs);
+ if (mce_flags.zen_ifu_quirk)
+ quirk_zen_ifu(i, m, regs);
+
m->bank = i;
if (mce_severity(m, regs, &tmp, true) >= MCE_PANIC_SEVERITY) {
mce_read_aux(m, i);
if (c->x86 == 0x15 && c->x86_model <= 0xf)
mce_flags.overflow_recov = 1;
+ if (c->x86 >= 0x17 && c->x86 <= 0x1A)
+ mce_flags.zen_ifu_quirk = 1;
+
}
if (c->x86_vendor == X86_VENDOR_INTEL) {