Merge tag 'powerpc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes marked for stable:
   - fix system reset interrupt winkle wakeups
   - fix setting of AIL in hypervisor mode

  Fixes for code merged this cycle:
   - fix exception vector build with 2.23 era binutils
   - fix missing update of HID register on secondary CPUs

  Other:
   - fix missing pr_cont()s
   - invalidate ERAT on tlbiel for POWER9 DD1"

* tag 'powerpc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Fix missing update of HID register on secondary CPUs
  powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1
  powerpc/64: Fix setting of AIL in hypervisor mode
  powerpc/oops: Fix missing pr_cont()s in instruction dump
  powerpc/oops: Fix missing pr_cont()s in show_regs()
  powerpc/oops: Fix missing pr_cont()s in print_msr_bits() et. al.
  powerpc/oops: Fix missing pr_cont()s in show_stack()
  powerpc: Fix exception vector build with 2.23 era binutils
  powerpc/64s: Fix system reset interrupt winkle wakeups

8 files changed, 68 insertions, 33 deletions

diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 84d49b197c32..9a3eee661297 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -91,7 +91,7 @@
  */
 #define LOAD_HANDLER(reg, label)                                        \
         ld      reg,PACAKBASE(r13);     /* get high part of &label */   \
-        ori     reg,reg,(FIXED_SYMBOL_ABS_ADDR(label))@l;
+        ori     reg,reg,FIXED_SYMBOL_ABS_ADDR(label);
 
 #define __LOAD_HANDLER(reg, label)                                      \
         ld      reg,PACAKBASE(r13);                                     \
@@ -158,14 +158,17 @@ BEGIN_FTR_SECTION_NESTED(943)						\
         std     ra,offset(r13);                                         \
 END_FTR_SECTION_NESTED(ftr,ftr,943)
 
-#define EXCEPTION_PROLOG_0(area)                                        \
-        GET_PACA(r13);                                                  \
+#define EXCEPTION_PROLOG_0_PACA(area)                                   \
         std     r9,area+EX_R9(r13);     /* save r9 */                   \
         OPT_GET_SPR(r9, SPRN_PPR, CPU_FTR_HAS_PPR);                     \
         HMT_MEDIUM;                                                     \
         std     r10,area+EX_R10(r13);   /* save r10 - r12 */            \
         OPT_GET_SPR(r10, SPRN_CFAR, CPU_FTR_CFAR)
 
+#define EXCEPTION_PROLOG_0(area)                                        \
+        GET_PACA(r13);                                                  \
+        EXCEPTION_PROLOG_0_PACA(area)
+
 #define __EXCEPTION_PROLOG_1(area, extra, vec)                          \
         OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR);         \
         OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR);          \
@@ -196,6 +199,12 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
         EXCEPTION_PROLOG_1(area, extra, vec);                           \
         EXCEPTION_PROLOG_PSERIES_1(label, h);
 
+/* Have the PACA in r13 already */
+#define EXCEPTION_PROLOG_PSERIES_PACA(area, label, h, extra, vec)       \
+        EXCEPTION_PROLOG_0_PACA(area);                                  \
+        EXCEPTION_PROLOG_1(area, extra, vec);                           \
+        EXCEPTION_PROLOG_PSERIES_1(label, h);
+
 #define __KVMTEST(h, n)                                                 \
         lbz     r10,HSTATE_IN_GUEST(r13);                               \
         cmpwi   r10,0;                                                  \
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
index 0132831b3081..c56ea8c84abb 100644
--- a/arch/powerpc/include/asm/ppc-opcode.h
+++ b/arch/powerpc/include/asm/ppc-opcode.h
@@ -460,5 +460,6 @@
 
 #define PPC_SLBIA(IH)   stringify_in_c(.long PPC_INST_SLBIA | \
                                        ((IH & 0x7) << 21))
+#define PPC_INVALIDATE_ERAT     PPC_SLBIA(7)
 
 #endif /* _ASM_POWERPC_PPC_OPCODE_H */
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 08ba447a4b3d..1ba82ea90230 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -116,7 +116,9 @@ EXC_VIRT_NONE(0x4000, 0x4100)
 
 EXC_REAL_BEGIN(system_reset, 0x100, 0x200)
         SET_SCRATCH0(r13)
-        EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
+        GET_PACA(r13)
+        clrrdi  r13,r13,1 /* Last bit of HSPRG0 is set if waking from winkle */
+        EXCEPTION_PROLOG_PSERIES_PACA(PACA_EXGEN, system_reset_common, EXC_STD,
                                  IDLETEST, 0x100)
 
 EXC_REAL_END(system_reset, 0x100, 0x200)
@@ -124,6 +126,9 @@ EXC_VIRT_NONE(0x4100, 0x4200)
 
 #ifdef CONFIG_PPC_P7_NAP
 EXC_COMMON_BEGIN(system_reset_idle_common)
+BEGIN_FTR_SECTION
+        GET_PACA(r13) /* Restore HSPRG0 to get the winkle bit in r13 */
+END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300)
         bl      pnv_restore_hyp_resource
 
         li      r0,PNV_THREAD_RUNNING
@@ -169,7 +174,7 @@ EXC_REAL_BEGIN(machine_check, 0x200, 0x300)
         SET_SCRATCH0(r13)               /* save r13 */
         /*
          * Running native on arch 2.06 or later, we may wakeup from winkle
-         * inside machine check. If yes, then last bit of HSPGR0 would be set
+         * inside machine check. If yes, then last bit of HSPRG0 would be set
          * to 1. Hence clear it unconditionally.
          */
         GET_PACA(r13)
@@ -388,7 +393,7 @@ EXC_COMMON_BEGIN(machine_check_handle_early)
         /*
          * Go back to winkle. Please note that this thread was woken up in
          * machine check from winkle and have not restored the per-subcore
-         * state. Hence before going back to winkle, set last bit of HSPGR0
+         * state. Hence before going back to winkle, set last bit of HSPRG0
          * to 1. This will make sure that if this thread gets woken up
          * again at reset vector 0x100 then it will get chance to restore
          * the subcore state.
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ce6dc61b15b2..49a680d5ae37 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1215,7 +1215,7 @@ static void show_instructions(struct pt_regs *regs)
                 int instr;
 
                 if (!(i % 8))
-                        printk("\n");
+                        pr_cont("\n");
 
 #if !defined(CONFIG_BOOKE)
                 /* If executing with the IMMU off, adjust pc rather
@@ -1227,18 +1227,18 @@ static void show_instructions(struct pt_regs *regs)
 
                 if (!__kernel_text_address(pc) ||
                      probe_kernel_address((unsigned int __user *)pc, instr)) {
-                        printk(KERN_CONT "XXXXXXXX ");
+                        pr_cont("XXXXXXXX ");
                 } else {
                         if (regs->nip == pc)
-                                printk(KERN_CONT "<%08x> ", instr);
+                                pr_cont("<%08x> ", instr);
                         else
-                                printk(KERN_CONT "%08x ", instr);
+                                pr_cont("%08x ", instr);
                 }
 
                 pc += sizeof(int);
         }
 
-        printk("\n");
+        pr_cont("\n");
 }
 
 struct regbit {
@@ -1282,7 +1282,7 @@ static void print_bits(unsigned long val, struct regbit *bits, const char *sep)
 
         for (; bits->bit; ++bits)
                 if (val & bits->bit) {
-                        printk("%s%s", s, bits->name);
+                        pr_cont("%s%s", s, bits->name);
                         s = sep;
                 }
 }
@@ -1305,9 +1305,9 @@ static void print_tm_bits(unsigned long val)
  *   T: Transactional   (bit 34)
  */
         if (val & (MSR_TM | MSR_TS_S | MSR_TS_T)) {
-                printk(",TM[");
+                pr_cont(",TM[");
                 print_bits(val, msr_tm_bits, "");
-                printk("]");
+                pr_cont("]");
         }
 }
 #else
@@ -1316,10 +1316,10 @@ static void print_tm_bits(unsigned long val) {}
 
 static void print_msr_bits(unsigned long val)
 {
-        printk("<");
+        pr_cont("<");
         print_bits(val, msr_bits, ",");
         print_tm_bits(val);
-        printk(">");
+        pr_cont(">");
 }
 
 #ifdef CONFIG_PPC64
@@ -1347,29 +1347,29 @@ void show_regs(struct pt_regs * regs)
         printk("  CR: %08lx  XER: %08lx\n", regs->ccr, regs->xer);
         trap = TRAP(regs);
         if ((regs->trap != 0xc00) && cpu_has_feature(CPU_FTR_CFAR))
-                printk("CFAR: "REG" ", regs->orig_gpr3);
+                pr_cont("CFAR: "REG" ", regs->orig_gpr3);
         if (trap == 0x200 || trap == 0x300 || trap == 0x600)
 #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
-                printk("DEAR: "REG" ESR: "REG" ", regs->dar, regs->dsisr);
+                pr_cont("DEAR: "REG" ESR: "REG" ", regs->dar, regs->dsisr);
 #else
-                printk("DAR: "REG" DSISR: %08lx ", regs->dar, regs->dsisr);
+                pr_cont("DAR: "REG" DSISR: %08lx ", regs->dar, regs->dsisr);
 #endif
 #ifdef CONFIG_PPC64
-        printk("SOFTE: %ld ", regs->softe);
+        pr_cont("SOFTE: %ld ", regs->softe);
 #endif
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
         if (MSR_TM_ACTIVE(regs->msr))
-                printk("\nPACATMSCRATCH: %016llx ", get_paca()->tm_scratch);
+                pr_cont("\nPACATMSCRATCH: %016llx ", get_paca()->tm_scratch);
 #endif
 
         for (i = 0;  i < 32;  i++) {
                 if ((i % REGS_PER_LINE) == 0)
-                        printk("\nGPR%02d: ", i);
-                printk(REG " ", regs->gpr[i]);
+                        pr_cont("\nGPR%02d: ", i);
+                pr_cont(REG " ", regs->gpr[i]);
                 if (i == LAST_VOLATILE && !FULL_REGS(regs))
                         break;
         }
-        printk("\n");
+        pr_cont("\n");
 #ifdef CONFIG_KALLSYMS
         /*
          * Lookup NIP late so we have the best change of getting the
@@ -1900,14 +1900,14 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
                         printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip);
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
                         if ((ip == rth) && curr_frame >= 0) {
-                                printk(" (%pS)",
+                                pr_cont(" (%pS)",
                                        (void *)current->ret_stack[curr_frame].ret);
                                 curr_frame--;
                         }
 #endif
                         if (firstframe)
-                                printk(" (unreliable)");
-                        printk("\n");
+                                pr_cont(" (unreliable)");
+                        pr_cont("\n");
                 }
                 firstframe = 0;
 
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 7ac8e6eaab5b..8d586cff8a41 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -226,17 +226,25 @@ static void __init configure_exceptions(void)
                 if (firmware_has_feature(FW_FEATURE_OPAL))
                         opal_configure_cores();
 
-                /* Enable AIL if supported, and we are in hypervisor mode */
-                if (early_cpu_has_feature(CPU_FTR_HVMODE) &&
-                    early_cpu_has_feature(CPU_FTR_ARCH_207S)) {
-                        unsigned long lpcr = mfspr(SPRN_LPCR);
-                        mtspr(SPRN_LPCR, lpcr | LPCR_AIL_3);
-                }
+                /* AIL on native is done in cpu_ready_for_interrupts() */
         }
 }
 
 static void cpu_ready_for_interrupts(void)
 {
+        /*
+         * Enable AIL if supported, and we are in hypervisor mode. This
+         * is called once for every processor.
+         *
+         * If we are not in hypervisor mode the job is done once for
+         * the whole partition in configure_exceptions().
+         */
+        if (early_cpu_has_feature(CPU_FTR_HVMODE) &&
+            early_cpu_has_feature(CPU_FTR_ARCH_207S)) {
+                unsigned long lpcr = mfspr(SPRN_LPCR);
+                mtspr(SPRN_LPCR, lpcr | LPCR_AIL_3);
+        }
+
         /* Set IR and DR in PACA MSR */
         get_paca()->kernel_msr = MSR_KERNEL;
 }
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 44d3c3a38e3e..5503078090cd 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -1029,6 +1029,10 @@ void hash__early_init_mmu_secondary(void)
 {
         /* Initialize hash table for that CPU */
         if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+
+                if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+                        update_hid_for_hash();
+
                 if (!cpu_has_feature(CPU_FTR_ARCH_300))
                         mtspr(SPRN_SDR1, _SDR1);
                 else
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index ed7bddc456b7..688b54517655 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -388,6 +388,10 @@ void radix__early_init_mmu_secondary(void)
          * update partition table control register and UPRT
          */
         if (!firmware_has_feature(FW_FEATURE_LPAR)) {
+
+                if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+                        update_hid_for_radix();
+
                 lpcr = mfspr(SPRN_LPCR);
                 mtspr(SPRN_LPCR, lpcr | LPCR_UPRT | LPCR_HR);
 
diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
index bda8c43be78a..3493cf4e0452 100644
--- a/arch/powerpc/mm/tlb-radix.c
+++ b/arch/powerpc/mm/tlb-radix.c
@@ -50,6 +50,8 @@ static inline void _tlbiel_pid(unsigned long pid, unsigned long ric)
         for (set = 0; set < POWER9_TLB_SETS_RADIX ; set++) {
                 __tlbiel_pid(pid, set, ric);
         }
+        if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+                asm volatile(PPC_INVALIDATE_ERAT : : :"memory");
         return;
 }
 
@@ -83,6 +85,8 @@ static inline void _tlbiel_va(unsigned long va, unsigned long pid,
         asm volatile(PPC_TLBIEL(%0, %4, %3, %2, %1)
                      : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs) : "memory");
         asm volatile("ptesync": : :"memory");
+        if (cpu_has_feature(CPU_FTR_POWER9_DD1))
+                asm volatile(PPC_INVALIDATE_ERAT : : :"memory");
 }
 
 static inline void _tlbie_va(unsigned long va, unsigned long pid,