Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc updates from Michael Ellerman:
 "There's some bug fixes or cleanups to facilitate fixes, a MAINTAINERS
  update, and a new syscall (bpf)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update
  powerpc/numa: use cached value of update->cpu in update_cpu_topology
  cxl: Fix PSL error due to duplicate segment table entries
  powerpc/mm: Use appropriate ESID mask in copro_calculate_slb()
  cxl: Refactor cxl_load_segment() and find_free_sste()
  cxl: Disable secondary hash in segment table
  Revert "powerpc/powernv: Fix endian bug in LPC bus debugfs accessors"
  powernv: Use _GLOBAL_TOC for opal wrappers
  powerpc: Wire up sys_bpf() syscall
  MAINTAINERS: nx-842 driver maintainer change
  powerpc/mm: Remove redundant #if case
  powerpc/mm: Fix build error with hugetlfs disabled

9 files changed, 14 insertions, 11 deletions

diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 623f2971ce0e..766b77d527ac 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -71,7 +71,7 @@ pte_t *huge_pte_offset_and_shift(struct mm_struct *mm,
 
 void flush_dcache_icache_hugepage(struct page *page);
 
-#if defined(CONFIG_PPC_MM_SLICES) || defined(CONFIG_PPC_SUBPAGE_PROT)
+#if defined(CONFIG_PPC_MM_SLICES)
 int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
                            unsigned long len);
 #else
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 7d8a60068805..ce9577d693be 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -365,3 +365,4 @@ SYSCALL_SPU(renameat2)
 SYSCALL_SPU(seccomp)
 SYSCALL_SPU(getrandom)
 SYSCALL_SPU(memfd_create)
+SYSCALL_SPU(bpf)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 4e9af3fd43e7..e0da021caa00 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -12,7 +12,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#define __NR_syscalls           361
+#define __NR_syscalls           362
 
 #define __NR__exit __NR_exit
 #define NR_syscalls     __NR_syscalls
diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
index 0688fc06e183..f55351f2e66e 100644
--- a/arch/powerpc/include/uapi/asm/unistd.h
+++ b/arch/powerpc/include/uapi/asm/unistd.h
@@ -383,5 +383,6 @@
 #define __NR_seccomp            358
 #define __NR_getrandom          359
 #define __NR_memfd_create       360
+#define __NR_bpf                361
 
 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
diff --git a/arch/powerpc/mm/copro_fault.c b/arch/powerpc/mm/copro_fault.c
index 0f9939e693df..5a236f082c78 100644
--- a/arch/powerpc/mm/copro_fault.c
+++ b/arch/powerpc/mm/copro_fault.c
@@ -99,8 +99,6 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
         u64 vsid;
         int psize, ssize;
 
-        slb->esid = (ea & ESID_MASK) | SLB_ESID_V;
-
         switch (REGION_ID(ea)) {
         case USER_REGION_ID:
                 pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea);
@@ -133,6 +131,7 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
         vsid |= mmu_psize_defs[psize].sllp |
                 ((ssize == MMU_SEGSIZE_1T) ? SLB_VSID_B_1T : 0);
 
+        slb->esid = (ea & (ssize == MMU_SEGSIZE_1T ? ESID_MASK_1T : ESID_MASK)) | SLB_ESID_V;
         slb->vsid = vsid;
 
         return 0;
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index e5236c24dc07..b9d1dfdbe5bb 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -1509,11 +1509,14 @@ static int update_cpu_topology(void *data)
         cpu = smp_processor_id();
 
         for (update = data; update; update = update->next) {
+                int new_nid = update->new_nid;
                 if (cpu != update->cpu)
                         continue;
 
-                unmap_cpu_from_node(update->cpu);
-                map_cpu_to_node(update->cpu, update->new_nid);
+                unmap_cpu_from_node(cpu);
+                map_cpu_to_node(cpu, new_nid);
+                set_cpu_numa_node(cpu, new_nid);
+                set_cpu_numa_mem(cpu, local_memory_node(new_nid));
                 vdso_getcpu_init();
         }
 
diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index 8d7bda94d196..ded0ea1afde4 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -682,6 +682,7 @@ void slice_set_range_psize(struct mm_struct *mm, unsigned long start,
         slice_convert(mm, mask, psize);
 }
 
+#ifdef CONFIG_HUGETLB_PAGE
 /*
  * is_hugepage_only_range() is used by generic code to verify whether
  * a normal mmap mapping (non hugetlbfs) is valid on a given area.
@@ -726,4 +727,4 @@ int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
 #endif
         return !slice_check_fit(mask, available);
 }
-
+#endif
diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c
index dd2c285ad170..ad4b31df779a 100644
--- a/arch/powerpc/platforms/powernv/opal-lpc.c
+++ b/arch/powerpc/platforms/powernv/opal-lpc.c
@@ -191,7 +191,6 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
 {
         struct lpc_debugfs_entry *lpc = filp->private_data;
         u32 data, pos, len, todo;
-        __be32 bedata;
         int rc;
 
         if (!access_ok(VERIFY_WRITE, ubuf, count))
@@ -214,10 +213,9 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
                                 len = 2;
                 }
                 rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos,
-                                   &bedata, len);
+                                   &data, len);
                 if (rc)
                         return -ENXIO;
-                data = be32_to_cpu(bedata);
                 switch(len) {
                 case 4:
                         rc = __put_user((u32)data, (u32 __user *)ubuf);
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index e9e2450c1fdd..feb549aa3eea 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -58,7 +58,7 @@ END_FTR_SECTION(0, 1);						\
  */
 
 #define OPAL_CALL(name, token)          \
- _GLOBAL(name);                         \
+ _GLOBAL_TOC(name);                     \
         mflr    r0;                     \
         std     r0,16(r1);              \
         li      r0,token;               \