Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  powerpc: Use generic compat_sys_old_readdir
  powerpc/kexec: Fix up KEXEC_CONTROL_CODE_SIZE missed during conversion
  powerpc: Remove dead module_find_bug code
  powerpc: Add CMO enabled flag and paging space data to lparcfg
  powerpc: Fix CMM page loaning on 64k page kernel with 4k hardware pages
  powerpc: Make CMO paging space pool ID and page size available
  powerpc: Fix lockdep IRQ tracing bug
  powerpc: Fix TLB invalidation on boot on 32-bit
  powerpc: Fix loss of vdso on fork on 32-bit

11 files changed, 78 insertions, 88 deletions

diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index fbe2932fa9e9..6251a4b10be7 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -291,6 +291,28 @@ struct hvcall_mpp_data {
 };
 
 int h_get_mpp(struct hvcall_mpp_data *);
+
+#ifdef CONFIG_PPC_PSERIES
+extern int CMO_PrPSP;
+extern int CMO_SecPSP;
+extern unsigned long CMO_PageSize;
+
+static inline int cmo_get_primary_psp(void)
+{
+        return CMO_PrPSP;
+}
+
+static inline int cmo_get_secondary_psp(void)
+{
+        return CMO_SecPSP;
+}
+
+static inline unsigned long cmo_get_page_size(void)
+{
+        return CMO_PageSize;
+}
+#endif /* CONFIG_PPC_PSERIES */
+
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_HVCALL_H */
diff --git a/arch/powerpc/include/asm/irqflags.h b/arch/powerpc/include/asm/irqflags.h
index 17ba3a881bfd..5f68ecfdf516 100644
--- a/arch/powerpc/include/asm/irqflags.h
+++ b/arch/powerpc/include/asm/irqflags.h
@@ -20,7 +20,7 @@
 #define TRACE_ENABLE_INTS       bl .trace_hardirqs_on
 #define TRACE_DISABLE_INTS      bl .trace_hardirqs_off
 #define TRACE_AND_RESTORE_IRQ_PARTIAL(en,skip)  \
-        cmpdi   en, 0;                          \
+        cmpdi   en,0;                           \
         bne     95f;                            \
         stb     en,PACASOFTIRQEN(r13);          \
         bl      .trace_hardirqs_off;            \
@@ -29,7 +29,8 @@
         li      en,1;
 #define TRACE_AND_RESTORE_IRQ(en)               \
         TRACE_AND_RESTORE_IRQ_PARTIAL(en,96f);  \
-96:     stb     en,PACASOFTIRQEN(r13)
+        stb     en,PACASOFTIRQEN(r13);          \
+96:
 #else
 #define TRACE_ENABLE_INTS
 #define TRACE_DISABLE_INTS
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index 9102b8bf0ead..6b993ef452ff 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -147,7 +147,6 @@ static inline void get_mmu_context(struct mm_struct *mm)
 static inline int init_new_context(struct task_struct *t, struct mm_struct *mm)
 {
         mm->context.id = NO_CONTEXT;
-        mm->context.vdso_base = 0;
         return 0;
 }
 
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index e084272ed1c2..f6cc7a43b4fa 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -92,7 +92,7 @@ COMPAT_SYS_SPU(readlink)
 SYSCALL(uselib)
 SYSCALL(swapon)
 SYSCALL(reboot)
-SYSX(sys_ni_syscall,old32_readdir,old_readdir)
+SYSX(sys_ni_syscall,compat_sys_old_readdir,old_readdir)
 SYSCALL_SPU(mmap)
 SYSCALL_SPU(munmap)
 SYSCALL_SPU(truncate)
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 99ee2f0f0f2b..8bb657519299 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -1155,7 +1155,7 @@ flush_tlbs:
         lis     r10, 0x40
 1:      addic.  r10, r10, -0x1000
         tlbie   r10
-        blt     1b
+        bgt     1b
         sync
         blr
 
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1a09719c7628..b3eef30b5131 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -416,6 +416,8 @@ static void pseries_cmo_data(struct seq_file *m)
         unsigned long cmo_faults = 0;
         unsigned long cmo_fault_time = 0;
 
+        seq_printf(m, "cmo_enabled=%d\n", firmware_has_feature(FW_FEATURE_CMO));
+
         if (!firmware_has_feature(FW_FEATURE_CMO))
                 return;
 
@@ -427,6 +429,9 @@ static void pseries_cmo_data(struct seq_file *m)
         seq_printf(m, "cmo_faults=%lu\n", cmo_faults);
         seq_printf(m, "cmo_fault_time_usec=%lu\n",
                    cmo_fault_time / tb_ticks_per_usec);
+        seq_printf(m, "cmo_primary_psp=%d\n", cmo_get_primary_psp());
+        seq_printf(m, "cmo_secondary_psp=%d\n", cmo_get_secondary_psp());
+        seq_printf(m, "cmo_page_size=%lu\n", cmo_get_page_size());
 }
 
 static int pseries_lparcfg_data(struct seq_file *m, void *v)
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 6321ae36f729..7a6dfbca7682 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -899,7 +899,7 @@ relocate_new_kernel:
 
         /* set a new stack at the bottom of our page... */
         /* (not really needed now) */
-        addi    r1, r4, KEXEC_CONTROL_CODE_SIZE - 8 /* for LR Save+Back Chain */
+        addi    r1, r4, KEXEC_CONTROL_PAGE_SIZE - 8 /* for LR Save+Back Chain */
         stw     r0, 0(r1)
 
         /* Do the copies */
diff --git a/arch/powerpc/kernel/module.c b/arch/powerpc/kernel/module.c
index af07003573c4..7ff292475269 100644
--- a/arch/powerpc/kernel/module.c
+++ b/arch/powerpc/kernel/module.c
@@ -99,18 +99,3 @@ void module_arch_cleanup(struct module *mod)
 {
         module_bug_cleanup(mod);
 }
-
-struct bug_entry *module_find_bug(unsigned long bugaddr)
-{
-        struct mod_arch_specific *mod;
-        unsigned int i;
-        struct bug_entry *bug;
-
-        list_for_each_entry(mod, &module_bug_list, bug_list) {
-                bug = mod->bug_table;
-                for (i = 0; i < mod->num_bugs; ++i, ++bug)
-                        if (bugaddr == bug->bug_addr)
-                                return bug;
-        }
-        return NULL;
-}
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 709f8cb8bfca..d98634c76060 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -52,63 +52,6 @@
 #include <asm/ppc-pci.h>
 #include <asm/syscalls.h>
 
-struct old_linux_dirent32 {
-        u32             d_ino;
-        u32             d_offset;
-        unsigned short  d_namlen;
-        char            d_name[1];
-};
-
-struct readdir_callback32 {
-        struct old_linux_dirent32 __user * dirent;
-        int count;
-};
-
-static int fillonedir(void * __buf, const char * name, int namlen,
-                                  off_t offset, u64 ino, unsigned int d_type)
-{
-        struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
-        struct old_linux_dirent32 __user * dirent;
-        ino_t d_ino;
-
-        if (buf->count)
-                return -EINVAL;
-        d_ino = ino;
-        if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
-                return -EOVERFLOW;
-        buf->count++;
-        dirent = buf->dirent;
-        put_user(d_ino, &dirent->d_ino);
-        put_user(offset, &dirent->d_offset);
-        put_user(namlen, &dirent->d_namlen);
-        copy_to_user(dirent->d_name, name, namlen);
-        put_user(0, dirent->d_name + namlen);
-        return 0;
-}
-
-asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
-{
-        int error = -EBADF;
-        struct file * file;
-        struct readdir_callback32 buf;
-
-        file = fget(fd);
-        if (!file)
-                goto out;
-
-        buf.count = 0;
-        buf.dirent = dirent;
-
-        error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
-        if (error < 0)
-                goto out_putf;
-        error = buf.count;
-
-out_putf:
-        fput(file);
-out:
-        return error;
-}
 
 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
                 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index a437267c6bf8..d967c1893ab5 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -2,6 +2,7 @@
 #define _PSERIES_PLPAR_WRAPPERS_H
 
 #include <asm/hvcall.h>
+#include <asm/page.h>
 
 static inline long poll_pending(void)
 {
@@ -44,12 +45,34 @@ static inline long register_slb_shadow(unsigned long cpu, unsigned long vpa)
 
 static inline long plpar_page_set_loaned(unsigned long vpa)
 {
-        return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa, 0);
+        unsigned long cmo_page_sz = cmo_get_page_size();
+        long rc = 0;
+        int i;
+
+        for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+                rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED, vpa + i, 0);
+
+        for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+                plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE,
+                                   vpa + i - cmo_page_sz, 0);
+
+        return rc;
 }
 
 static inline long plpar_page_set_active(unsigned long vpa)
 {
-        return plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa, 0);
+        unsigned long cmo_page_sz = cmo_get_page_size();
+        long rc = 0;
+        int i;
+
+        for (i = 0; !rc && i < PAGE_SIZE; i += cmo_page_sz)
+                rc = plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_ACTIVE, vpa + i, 0);
+
+        for (i -= cmo_page_sz; rc && i != 0; i -= cmo_page_sz)
+                plpar_hcall_norets(H_PAGE_INIT, H_PAGE_SET_LOANED,
+                                   vpa + i - cmo_page_sz, 0);
+
+        return rc;
 }
 
 extern void vpa_init(int cpu);
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 063a0d2fba30..3ce8a139b85d 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -68,6 +68,9 @@
 #include "plpar_wrappers.h"
 #include "pseries.h"
 
+int CMO_PrPSP = -1;
+int CMO_SecPSP = -1;
+unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
 
 int fwnmi_active;  /* TRUE if an FWNMI handler is present */
 
@@ -325,8 +328,7 @@ void pSeries_cmo_feature_init(void)
 {
         char *ptr, *key, *value, *end;
         int call_status;
-        int PrPSP = -1;
-        int SecPSP = -1;
+        int page_order = IOMMU_PAGE_SHIFT;
 
         pr_debug(" -> fw_cmo_feature_init()\n");
         spin_lock(&rtas_data_buf_lock);
@@ -365,21 +367,31 @@ void pSeries_cmo_feature_init(void)
                                 break;
                         }
 
-                        if (0 == strcmp(key, "PrPSP"))
-                                PrPSP = simple_strtol(value, NULL, 10);
+                        if (0 == strcmp(key, "CMOPageSize"))
+                                page_order = simple_strtol(value, NULL, 10);
+                        else if (0 == strcmp(key, "PrPSP"))
+                                CMO_PrPSP = simple_strtol(value, NULL, 10);
                         else if (0 == strcmp(key, "SecPSP"))
-                                SecPSP = simple_strtol(value, NULL, 10);
+                                CMO_SecPSP = simple_strtol(value, NULL, 10);
                         value = key = ptr + 1;
                 }
                 ptr++;
         }
 
-        if (PrPSP != -1 || SecPSP != -1) {
+        /* Page size is returned as the power of 2 of the page size,
+         * convert to the page size in bytes before returning
+         */
+        CMO_PageSize = 1 << page_order;
+        pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
+
+        if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
                 pr_info("CMO enabled\n");
-                pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+                pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+                         CMO_SecPSP);
                 powerpc_firmware_features |= FW_FEATURE_CMO;
         } else
-                pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", PrPSP, SecPSP);
+                pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+                         CMO_SecPSP);
         spin_unlock(&rtas_data_buf_lock);
         pr_debug(" <- fw_cmo_feature_init()\n");
 }