Merge branch 'fixes' into next

There's a few important fixes in our fixes branch, in particular the
pgd/pud_present() one, so merge it now.

arch/powerpc/include/asm/book3s/64/pgtable.h

@@ -904,7 +904,7 @@ static inline int pud_none(pud_t pud)
 
 static inline int pud_present(pud_t pud)
 {
-	return (pud_raw(pud) & cpu_to_be64(_PAGE_PRESENT));
+	return !!(pud_raw(pud) & cpu_to_be64(_PAGE_PRESENT));
 }
 
 extern struct page *pud_page(pud_t pud);
@@ -951,7 +951,7 @@ static inline int pgd_none(pgd_t pgd)
 
 static inline int pgd_present(pgd_t pgd)
 {
-	return (pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
+	return !!(pgd_raw(pgd) & cpu_to_be64(_PAGE_PRESENT));
 }
 
 static inline pte_t pgd_pte(pgd_t pgd)
@@ -1258,21 +1258,13 @@ extern pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
 
 #define pmd_move_must_withdraw pmd_move_must_withdraw
 struct spinlock;
-static inline int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
-					 struct spinlock *old_pmd_ptl,
-					 struct vm_area_struct *vma)
-{
-	if (radix_enabled())
-		return false;
-	/*
-	 * Archs like ppc64 use pgtable to store per pmd
-	 * specific information. So when we switch the pmd,
-	 * we should also withdraw and deposit the pgtable
-	 */
-	return true;
-}
-
-
+extern int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
+				  struct spinlock *old_pmd_ptl,
+				  struct vm_area_struct *vma);
+/*
+ * Hash translation mode use the deposited table to store hash pte
+ * slot information.
+ */
 #define arch_needs_pgtable_deposit arch_needs_pgtable_deposit
 static inline bool arch_needs_pgtable_deposit(void)
 {

arch/powerpc/include/uapi/asm/perf_regs.h

@@ -47,6 +47,7 @@ enum perf_event_powerpc_regs {
 	PERF_REG_POWERPC_DAR,
 	PERF_REG_POWERPC_DSISR,
 	PERF_REG_POWERPC_SIER,
+	PERF_REG_POWERPC_MMCRA,
 	PERF_REG_POWERPC_MAX,
 };
 #endif /* _UAPI_ASM_POWERPC_PERF_REGS_H */

arch/powerpc/kernel/head_8xx.S

@@ -852,11 +852,12 @@ start_here:
 
 	/* set up the PTE pointers for the Abatron bdiGDB.
 	*/
-	tovirt(r6,r6)
 	lis	r5, abatron_pteptrs@h
 	ori	r5, r5, abatron_pteptrs@l
 	stw	r5, 0xf0(0)	/* Must match your Abatron config file */
 	tophys(r5,r5)
+	lis	r6, swapper_pg_dir@h
+	ori	r6, r6, swapper_pg_dir@l
 	stw	r6, 0(r5)
 
 /* Now turn on the MMU for real! */

arch/powerpc/kernel/signal_64.c

@@ -755,11 +755,12 @@ SYSCALL_DEFINE0(rt_sigreturn)
 		if (restore_tm_sigcontexts(current, &uc->uc_mcontext,
 					   &uc_transact->uc_mcontext))
 			goto badframe;
-	}
+	} else
 #endif
-	/* Fall through, for non-TM restore */
-	if (!MSR_TM_ACTIVE(msr)) {
+	{
 		/*
+		 * Fall through, for non-TM restore
+		 *
 		 * Unset MSR[TS] on the thread regs since MSR from user
 		 * context does not have MSR active, and recheckpoint was
 		 * not called since restore_tm_sigcontexts() was not called

arch/powerpc/kernel/trace/ftrace.c

@@ -967,13 +967,6 @@ unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip)
 }
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
 
-#if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_PPC64)
-unsigned long __init arch_syscall_addr(int nr)
-{
-	return sys_call_table[nr*2];
-}
-#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_PPC64 */
-
 #ifdef PPC64_ELF_ABI_v1
 char *arch_ftrace_match_adjust(char *str, const char *search)
 {

arch/powerpc/mm/pgtable-book3s64.c

@@ -400,3 +400,25 @@ void arch_report_meminfo(struct seq_file *m)
 		   atomic_long_read(&direct_pages_count[MMU_PAGE_1G]) << 20);
 }
 #endif /* CONFIG_PROC_FS */
+
+/*
+ * For hash translation mode, we use the deposited table to store hash slot
+ * information and they are stored at PTRS_PER_PMD offset from related pmd
+ * location. Hence a pmd move requires deposit and withdraw.
+ *
+ * For radix translation with split pmd ptl, we store the deposited table in the
+ * pmd page. Hence if we have different pmd page we need to withdraw during pmd
+ * move.
+ *
+ * With hash we use deposited table always irrespective of anon or not.
+ * With radix we use deposited table only for anonymous mapping.
+ */
+int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
+			   struct spinlock *old_pmd_ptl,
+			   struct vm_area_struct *vma)
+{
+	if (radix_enabled())
+		return (new_pmd_ptl != old_pmd_ptl) && vma_is_anonymous(vma);
+
+	return true;
+}

arch/powerpc/perf/perf_regs.c

@@ -70,6 +70,7 @@ static unsigned int pt_regs_offset[PERF_REG_POWERPC_MAX] = {
 	PT_REGS_OFFSET(PERF_REG_POWERPC_DAR, dar),
 	PT_REGS_OFFSET(PERF_REG_POWERPC_DSISR, dsisr),
 	PT_REGS_OFFSET(PERF_REG_POWERPC_SIER, dar),
+	PT_REGS_OFFSET(PERF_REG_POWERPC_MMCRA, dsisr),
 };
 
 u64 perf_reg_value(struct pt_regs *regs, int idx)
@@ -83,6 +84,11 @@ u64 perf_reg_value(struct pt_regs *regs, int idx)
 	    !is_sier_available()))
 		return 0;
 
+	if (idx == PERF_REG_POWERPC_MMCRA &&
+	   (IS_ENABLED(CONFIG_FSL_EMB_PERF_EVENT) ||
+	    IS_ENABLED(CONFIG_PPC32)))
+		return 0;
+
 	return regs_get_register(regs, pt_regs_offset[idx]);
 }
 

arch/powerpc/platforms/4xx/ocm.c

@@ -237,12 +237,12 @@ static int ocm_debugfs_show(struct seq_file *m, void *v)
 			continue;
 
 		seq_printf(m, "PPC4XX OCM   : %d\n", ocm->index);
-		seq_printf(m, "PhysAddr     : %pa[p]\n", &(ocm->phys));
+		seq_printf(m, "PhysAddr     : %pa\n", &(ocm->phys));
 		seq_printf(m, "MemTotal     : %d Bytes\n", ocm->memtotal);
 		seq_printf(m, "MemTotal(NC) : %d Bytes\n", ocm->nc.memtotal);
 		seq_printf(m, "MemTotal(C)  : %d Bytes\n\n", ocm->c.memtotal);
 
-		seq_printf(m, "NC.PhysAddr  : %pa[p]\n", &(ocm->nc.phys));
+		seq_printf(m, "NC.PhysAddr  : %pa\n", &(ocm->nc.phys));
 		seq_printf(m, "NC.VirtAddr  : 0x%p\n", ocm->nc.virt);
 		seq_printf(m, "NC.MemTotal  : %d Bytes\n", ocm->nc.memtotal);
 		seq_printf(m, "NC.MemFree   : %d Bytes\n", ocm->nc.memfree);
@@ -252,7 +252,7 @@ static int ocm_debugfs_show(struct seq_file *m, void *v)
 							blk->size, blk->owner);
 		}
 
-		seq_printf(m, "\nC.PhysAddr   : %pa[p]\n", &(ocm->c.phys));
+		seq_printf(m, "\nC.PhysAddr   : %pa\n", &(ocm->c.phys));
 		seq_printf(m, "C.VirtAddr   : 0x%p\n", ocm->c.virt);
 		seq_printf(m, "C.MemTotal   : %d Bytes\n", ocm->c.memtotal);
 		seq_printf(m, "C.MemFree    : %d Bytes\n", ocm->c.memfree);

arch/powerpc/platforms/powernv/npu-dma.c

@@ -560,7 +560,7 @@ struct iommu_table_group *pnv_try_setup_npu_table_group(struct pnv_ioda_pe *pe)
 		}
 	} else {
 		/* Create a group for 1 GPU and attached NPUs for POWER8 */
-		pe->npucomp = kzalloc(sizeof(pe->npucomp), GFP_KERNEL);
+		pe->npucomp = kzalloc(sizeof(*pe->npucomp), GFP_KERNEL);
 		table_group = &pe->npucomp->table_group;
 		table_group->ops = &pnv_npu_peers_ops;
 		iommu_register_group(table_group, hose->global_number,

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -2681,7 +2681,8 @@ static void pnv_pci_ioda_setup_iommu_api(void)
 	list_for_each_entry(hose, &hose_list, list_node) {
 		phb = hose->private_data;
 
-		if (phb->type == PNV_PHB_NPU_NVLINK)
+		if (phb->type == PNV_PHB_NPU_NVLINK ||
+		    phb->type == PNV_PHB_NPU_OCAPI)
 			continue;
 
 		list_for_each_entry(pe, &phb->ioda.pe_list, list) {

arch/powerpc/platforms/pseries/papr_scm.c

@@ -43,6 +43,7 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
 {
 	unsigned long ret[PLPAR_HCALL_BUFSIZE];
 	uint64_t rc, token;
+	uint64_t saved = 0;
 
 	/*
 	 * When the hypervisor cannot map all the requested memory in a single
@@ -56,6 +57,8 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
 		rc = plpar_hcall(H_SCM_BIND_MEM, ret, p->drc_index, 0,
 				p->blocks, BIND_ANY_ADDR, token);
 		token = ret[0];
+		if (!saved)
+			saved = ret[1];
 		cond_resched();
 	} while (rc == H_BUSY);
 
@@ -64,7 +67,7 @@ static int drc_pmem_bind(struct papr_scm_priv *p)
 		return -ENXIO;
 	}
 
-	p->bound_addr = ret[1];
+	p->bound_addr = saved;
 
 	dev_dbg(&p->pdev->dev, "bound drc %x to %pR\n", p->drc_index, &p->res);
 

arch/powerpc/platforms/pseries/pci.c

@@ -264,7 +264,9 @@ void __init pSeries_final_fixup(void)
 			if (!of_device_is_compatible(nvdn->parent,
 						"ibm,power9-npu"))
 				continue;
+#ifdef CONFIG_PPC_POWERNV
 			WARN_ON_ONCE(pnv_npu2_init(hose));
+#endif
 			break;
 		}
 	}

tools/arch/powerpc/include/uapi/asm/perf_regs.h

@@ -47,6 +47,7 @@ enum perf_event_powerpc_regs {
 	PERF_REG_POWERPC_DAR,
 	PERF_REG_POWERPC_DSISR,
 	PERF_REG_POWERPC_SIER,
+	PERF_REG_POWERPC_MMCRA,
 	PERF_REG_POWERPC_MAX,
 };
 #endif /* _UAPI_ASM_POWERPC_PERF_REGS_H */

tools/perf/arch/powerpc/include/perf_regs.h

@@ -63,7 +63,8 @@ static const char *reg_names[] = {
 	[PERF_REG_POWERPC_TRAP] = "trap",
 	[PERF_REG_POWERPC_DAR] = "dar",
 	[PERF_REG_POWERPC_DSISR] = "dsisr",
-	[PERF_REG_POWERPC_SIER] = "sier"
+	[PERF_REG_POWERPC_SIER] = "sier",
+	[PERF_REG_POWERPC_MMCRA] = "mmcra"
 };
 
 static inline const char *perf_reg_name(int id)

tools/perf/arch/powerpc/util/perf_regs.c

@@ -53,6 +53,7 @@ const struct sample_reg sample_reg_masks[] = {
 	SMPL_REG(dar, PERF_REG_POWERPC_DAR),
 	SMPL_REG(dsisr, PERF_REG_POWERPC_DSISR),
 	SMPL_REG(sier, PERF_REG_POWERPC_SIER),
+	SMPL_REG(mmcra, PERF_REG_POWERPC_MMCRA),
 	SMPL_REG_END
 };