/* Other BookE, we assume the first GB is bolted */
return 1ul << 30;
#else
+ if (early_radix_enabled())
+ return ULONG_MAX;
+
/* BookS, the first segment is bolted */
if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
return 1UL << SID_SHIFT_1T;
/*
* Interrupt stacks must be in the first segment since we
- * cannot afford to take SLB misses on them.
+ * cannot afford to take SLB misses on them. They are not
+ * accessed in realmode.
*/
for_each_possible_cpu(i) {
softirq_ctx[i] = (struct thread_info *)
* aligned.
*
* Since we use these as temporary stacks during secondary CPU
- * bringup, we need to get at them in real mode. This means they
- * must also be within the RMO region.
+ * bringup, machine check, system reset, and HMI, we need to get
+ * at them in real mode. This means they must also be within the RMO
+ * region.
*
* The IRQ stacks allocated elsewhere in this file are zeroed and
* initialized in kernel/irq.c. These are initialized here in order