Merge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3

* commit 'v3.3-rc1': (9775 commits)
  Linux 3.3-rc1
  x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits
  qnx4: don't leak ->BitMap on late failure exits
  qnx4: reduce the insane nesting in qnx4_checkroot()
  qnx4: di_fname is an array, for crying out loud...
  KEYS: Permit key_serial() to be called with a const key pointer
  keys: fix user_defined key sparse messages
  ima: fix cred sparse warning
  uml: fix compile for x86-64
  MPILIB: Add a missing ENOMEM check
  tpm: fix (ACPI S3) suspend regression
  nvme: fix merge error due to change of 'make_request_fn' fn type
  xen: using EXPORT_SYMBOL requires including export.h
  gpio: tps65910: Use correct offset for gpio initialization
  acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
  intel_idle: Split up and provide per CPU initialization func
  ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
  tg3: Fix single-vector MSI-X code
  openvswitch: Fix multipart datapath dumps.
  ipv6: fix per device IP snmp counters
  ...

6 files changed, 61 insertions, 13 deletions

diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 26c731a106af..fdce49c7aff6 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -29,7 +29,8 @@ config XEN_PVHVM
 
 config XEN_MAX_DOMAIN_MEMORY
        int
-       default 128
+       default 500 if X86_64
+       default 64 if X86_32
        depends on XEN
        help
          This only affects the sizing of some bss arrays, the unused
@@ -48,3 +49,4 @@ config XEN_DEBUG_FS
         help
           Enable statistics output and various tuning options in debugfs.
           Enabling this option may incur a significant performance overhead.
+
diff --git a/arch/x86/xen/debugfs.c b/arch/x86/xen/debugfs.c
index 7c0fedd98ea0..ef1db1900d86 100644
--- a/arch/x86/xen/debugfs.c
+++ b/arch/x86/xen/debugfs.c
@@ -109,7 +109,7 @@ static const struct file_operations u32_array_fops = {
         .llseek = no_llseek,
 };
 
-struct dentry *xen_debugfs_create_u32_array(const char *name, mode_t mode,
+struct dentry *xen_debugfs_create_u32_array(const char *name, umode_t mode,
                                             struct dentry *parent,
                                             u32 *array, unsigned elements)
 {
diff --git a/arch/x86/xen/debugfs.h b/arch/x86/xen/debugfs.h
index e28132084832..78d25499be5b 100644
--- a/arch/x86/xen/debugfs.h
+++ b/arch/x86/xen/debugfs.h
@@ -3,7 +3,7 @@
 
 struct dentry * __init xen_init_debugfs(void);
 
-struct dentry *xen_debugfs_create_u32_array(const char *name, mode_t mode,
+struct dentry *xen_debugfs_create_u32_array(const char *name, umode_t mode,
                                             struct dentry *parent,
                                             u32 *array, unsigned elements);
 
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 1f928659c338..12eb07bfb267 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1215,8 +1215,6 @@ asmlinkage void __init xen_start_kernel(void)
         local_irq_disable();
         early_boot_irqs_disabled = true;
 
-        memblock_init();
-
         xen_raw_console_write("mapping kernel into physical memory\n");
         pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);
         xen_ident_map_ISA();
diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c
index 5a40d24ba331..3a5f55d51907 100644
--- a/arch/x86/xen/grant-table.c
+++ b/arch/x86/xen/grant-table.c
@@ -54,6 +54,20 @@ static int map_pte_fn(pte_t *pte, struct page *pmd_page,
         return 0;
 }
 
+/*
+ * This function is used to map shared frames to store grant status. It is
+ * different from map_pte_fn above, the frames type here is uint64_t.
+ */
+static int map_pte_fn_status(pte_t *pte, struct page *pmd_page,
+                             unsigned long addr, void *data)
+{
+        uint64_t **frames = (uint64_t **)data;
+
+        set_pte_at(&init_mm, addr, pte, mfn_pte((*frames)[0], PAGE_KERNEL));
+        (*frames)++;
+        return 0;
+}
+
 static int unmap_pte_fn(pte_t *pte, struct page *pmd_page,
                         unsigned long addr, void *data)
 {
@@ -64,10 +78,10 @@ static int unmap_pte_fn(pte_t *pte, struct page *pmd_page,
 
 int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
                            unsigned long max_nr_gframes,
-                           struct grant_entry **__shared)
+                           void **__shared)
 {
         int rc;
-        struct grant_entry *shared = *__shared;
+        void *shared = *__shared;
 
         if (shared == NULL) {
                 struct vm_struct *area =
@@ -83,8 +97,30 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
         return rc;
 }
 
-void arch_gnttab_unmap_shared(struct grant_entry *shared,
-                              unsigned long nr_gframes)
+int arch_gnttab_map_status(uint64_t *frames, unsigned long nr_gframes,
+                           unsigned long max_nr_gframes,
+                           grant_status_t **__shared)
+{
+        int rc;
+        grant_status_t *shared = *__shared;
+
+        if (shared == NULL) {
+                /* No need to pass in PTE as we are going to do it
+                 * in apply_to_page_range anyhow. */
+                struct vm_struct *area =
+                        alloc_vm_area(PAGE_SIZE * max_nr_gframes, NULL);
+                BUG_ON(area == NULL);
+                shared = area->addr;
+                *__shared = shared;
+        }
+
+        rc = apply_to_page_range(&init_mm, (unsigned long)shared,
+                                 PAGE_SIZE * nr_gframes,
+                                 map_pte_fn_status, &frames);
+        return rc;
+}
+
+void arch_gnttab_unmap(void *shared, unsigned long nr_gframes)
 {
         apply_to_page_range(&init_mm, (unsigned long)shared,
                             PAGE_SIZE * nr_gframes, unmap_pte_fn, NULL);
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index f5e1362550e7..e03c63692176 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -173,9 +173,21 @@ static unsigned long __init xen_get_max_pages(void)
         domid_t domid = DOMID_SELF;
         int ret;
 
-        ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
-        if (ret > 0)
-                max_pages = ret;
+        /*
+         * For the initial domain we use the maximum reservation as
+         * the maximum page.
+         *
+         * For guest domains the current maximum reservation reflects
+         * the current maximum rather than the static maximum. In this
+         * case the e820 map provided to us will cover the static
+         * maximum region.
+         */
+        if (xen_initial_domain()) {
+                ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid);
+                if (ret > 0)
+                        max_pages = ret;
+        }
+
         return min(max_pages, MAX_DOMAIN_PAGES);
 }
 
@@ -409,6 +421,6 @@ void __init xen_arch_setup(void)
 #endif
         disable_cpuidle();
         boot_option_idle_override = IDLE_HALT;
-
+        WARN_ON(set_pm_idle_to_default());
         fiddle_vdso();
 }