Merge ARM fixes

6 files changed, 41 insertions, 45 deletions

diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c
index e0c390d6ceb5..aa58720f6871 100644
--- a/arch/i386/mm/discontig.c
+++ b/arch/i386/mm/discontig.c
@@ -101,7 +101,6 @@ extern void find_max_pfn(void);
 extern void add_one_highpage_init(struct page *, int, int);
 
 extern struct e820map e820;
-extern unsigned long init_pg_tables_end;
 extern unsigned long highend_pfn, highstart_pfn;
 extern unsigned long max_low_pfn;
 extern unsigned long totalram_pages;
diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c
index aaaa4d225f7e..b8c4e259fc8b 100644
--- a/arch/i386/mm/fault.c
+++ b/arch/i386/mm/fault.c
@@ -46,43 +46,17 @@ int unregister_page_fault_notifier(struct notifier_block *nb)
 }
 EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
 
-static inline int notify_page_fault(enum die_val val, const char *str,
-                        struct pt_regs *regs, long err, int trap, int sig)
+static inline int notify_page_fault(struct pt_regs *regs, long err)
 {
         struct die_args args = {
                 .regs = regs,
-                .str = str,
+                .str = "page fault",
                 .err = err,
-                .trapnr = trap,
-                .signr = sig
+                .trapnr = 14,
+                .signr = SIGSEGV
         };
-        return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
-}
-
-/*
- * Unlock any spinlocks which will prevent us from getting the
- * message out 
- */
-void bust_spinlocks(int yes)
-{
-        int loglevel_save = console_loglevel;
-
-        if (yes) {
-                oops_in_progress = 1;
-                return;
-        }
-#ifdef CONFIG_VT
-        unblank_screen();
-#endif
-        oops_in_progress = 0;
-        /*
-         * OK, the message is on the console.  Now we call printk()
-         * without oops_in_progress set so that printk will give klogd
-         * a poke.  Hold onto your hats...
-         */
-        console_loglevel = 15;          /* NMI oopser may have shut the console up */
-        printk(" ");
-        console_loglevel = loglevel_save;
+        return atomic_notifier_call_chain(&notify_page_fault_chain,
+                                          DIE_PAGE_FAULT, &args);
 }
 
 /*
@@ -353,8 +327,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
         if (unlikely(address >= TASK_SIZE)) {
                 if (!(error_code & 0x0000000d) && vmalloc_fault(address) >= 0)
                         return;
-                if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-                                                SIGSEGV) == NOTIFY_STOP)
+                if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
                         return;
                 /*
                  * Don't take the mm semaphore here. If we fixup a prefetch
@@ -363,8 +336,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
                 goto bad_area_nosemaphore;
         }
 
-        if (notify_page_fault(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
-                                        SIGSEGV) == NOTIFY_STOP)
+        if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
                 return;
 
         /* It's safe to allow irq's after cr2 has been saved and the vmalloc
diff --git a/arch/i386/mm/highmem.c b/arch/i386/mm/highmem.c
index e0fa6cb655a8..bb2de1089add 100644
--- a/arch/i386/mm/highmem.c
+++ b/arch/i386/mm/highmem.c
@@ -33,13 +33,14 @@ void *kmap_atomic(struct page *page, enum km_type type)
 
         /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
         pagefault_disable();
+
+        idx = type + KM_TYPE_NR*smp_processor_id();
+        BUG_ON(!pte_none(*(kmap_pte-idx)));
+
         if (!PageHighMem(page))
                 return page_address(page);
 
-        idx = type + KM_TYPE_NR*smp_processor_id();
         vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-        if (!pte_none(*(kmap_pte-idx)))
-                BUG();
         set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
 
         return (void*) vaddr;
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index c5c5ea700cc7..ae436882af7a 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -62,6 +62,7 @@ static pmd_t * __init one_md_table_init(pgd_t *pgd)
                 
 #ifdef CONFIG_X86_PAE
         pmd_table = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+        paravirt_alloc_pd(__pa(pmd_table) >> PAGE_SHIFT);
         set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
         pud = pud_offset(pgd, 0);
         if (pmd_table != pmd_offset(pud, 0)) 
@@ -82,6 +83,7 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
 {
         if (pmd_none(*pmd)) {
                 pte_t *page_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+                paravirt_alloc_pt(__pa(page_table) >> PAGE_SHIFT);
                 set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
                 if (page_table != pte_offset_kernel(pmd, 0))
                         BUG();  
@@ -345,6 +347,8 @@ static void __init pagetable_init (void)
         /* Init entries of the first-level page table to the zero page */
         for (i = 0; i < PTRS_PER_PGD; i++)
                 set_pgd(pgd_base + i, __pgd(__pa(empty_zero_page) | _PAGE_PRESENT));
+#else
+        paravirt_alloc_pd(__pa(swapper_pg_dir) >> PAGE_SHIFT);
 #endif
 
         /* Enable PSE if available */
diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c
index ad91528bdc14..412ebbd8adb0 100644
--- a/arch/i386/mm/pageattr.c
+++ b/arch/i386/mm/pageattr.c
@@ -60,6 +60,7 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot,
         address = __pa(address);
         addr = address & LARGE_PAGE_MASK; 
         pbase = (pte_t *)page_address(base);
+        paravirt_alloc_pt(page_to_pfn(base));
         for (i = 0; i < PTRS_PER_PTE; i++, addr += PAGE_SIZE) {
                set_pte(&pbase[i], pfn_pte(addr >> PAGE_SHIFT,
                                           addr == address ? prot : ref_prot));
@@ -172,6 +173,7 @@ __change_page_attr(struct page *page, pgprot_t prot)
         if (!PageReserved(kpte_page)) {
                 if (cpu_has_pse && (page_private(kpte_page) == 0)) {
                         ClearPagePrivate(kpte_page);
+                        paravirt_release_pt(page_to_pfn(kpte_page));
                         list_add(&kpte_page->lru, &df_list);
                         revert_page(kpte_page, address);
                 }
@@ -224,7 +226,7 @@ void global_flush_tlb(void)
         list_replace_init(&df_list, &l);
         spin_unlock_irq(&cpa_lock);
         if (!cpu_has_clflush)
-                flush_map(0);
+                flush_map(NULL);
         list_for_each_entry_safe(pg, next, &l, lru) {
                 if (cpu_has_clflush)
                         flush_map(page_address(pg));
diff --git a/arch/i386/mm/pgtable.c b/arch/i386/mm/pgtable.c
index f349eaf450b0..fa0cfbd551e1 100644
--- a/arch/i386/mm/pgtable.c
+++ b/arch/i386/mm/pgtable.c
@@ -171,6 +171,8 @@ void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
 void reserve_top_address(unsigned long reserve)
 {
         BUG_ON(fixmaps > 0);
+        printk(KERN_INFO "Reserving virtual address space above 0x%08x\n",
+               (int)-reserve);
 #ifdef CONFIG_COMPAT_VDSO
         BUG_ON(reserve != 0);
 #else
@@ -248,9 +250,15 @@ void pgd_ctor(void *pgd, struct kmem_cache *cache, unsigned long unused)
         clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
                         swapper_pg_dir + USER_PTRS_PER_PGD,
                         KERNEL_PGD_PTRS);
+
         if (PTRS_PER_PMD > 1)
                 return;
 
+        /* must happen under lock */
+        paravirt_alloc_pd_clone(__pa(pgd) >> PAGE_SHIFT,
+                        __pa(swapper_pg_dir) >> PAGE_SHIFT,
+                        USER_PTRS_PER_PGD, PTRS_PER_PGD - USER_PTRS_PER_PGD);
+
         pgd_list_add(pgd);
         spin_unlock_irqrestore(&pgd_lock, flags);
 }
@@ -260,6 +268,7 @@ void pgd_dtor(void *pgd, struct kmem_cache *cache, unsigned long unused)
 {
         unsigned long flags; /* can be called from interrupt context */
 
+        paravirt_release_pd(__pa(pgd) >> PAGE_SHIFT);
         spin_lock_irqsave(&pgd_lock, flags);
         pgd_list_del(pgd);
         spin_unlock_irqrestore(&pgd_lock, flags);
@@ -277,13 +286,18 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
                 pmd_t *pmd = kmem_cache_alloc(pmd_cache, GFP_KERNEL);
                 if (!pmd)
                         goto out_oom;
+                paravirt_alloc_pd(__pa(pmd) >> PAGE_SHIFT);
                 set_pgd(&pgd[i], __pgd(1 + __pa(pmd)));
         }
         return pgd;
 
 out_oom:
-        for (i--; i >= 0; i--)
-                kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1));
+        for (i--; i >= 0; i--) {
+                pgd_t pgdent = pgd[i];
+                void* pmd = (void *)__va(pgd_val(pgdent)-1);
+                paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
+                kmem_cache_free(pmd_cache, pmd);
+        }
         kmem_cache_free(pgd_cache, pgd);
         return NULL;
 }
@@ -294,8 +308,12 @@ void pgd_free(pgd_t *pgd)
 
         /* in the PAE case user pgd entries are overwritten before usage */
         if (PTRS_PER_PMD > 1)
-                for (i = 0; i < USER_PTRS_PER_PGD; ++i)
-                        kmem_cache_free(pmd_cache, (void *)__va(pgd_val(pgd[i])-1));
+                for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
+                        pgd_t pgdent = pgd[i];
+                        void* pmd = (void *)__va(pgd_val(pgdent)-1);
+                        paravirt_release_pd(__pa(pmd) >> PAGE_SHIFT);
+                        kmem_cache_free(pmd_cache, pmd);
+                }
         /* in the non-PAE case, free_pgtables() clears user pgd entries */
         kmem_cache_free(pgd_cache, pgd);
 }