Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: remove quicklists
  x86: ia32 syscall restart fix
  x86: ioremap, remove WARN_ON()

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f41c9538ca303f2fdb5b231cc9c9592b72024e23..237fc128143d43fbe3c232de29cb47ffec331d90 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -66,9 +66,6 @@ config MMU
 config ZONE_DMA
        def_bool y
 
-config QUICKLIST
-       def_bool X86_32
-
 config SBUS
        bool
 

diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 8f64abe699fda22af7813c25ede7896fbd715a98..d5904eef1d319a00eaf71d7efb842d0f87b2fab5 100644 (file)
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -1055,10 +1055,17 @@ static int putreg32(struct task_struct *child, unsigned regno, u32 value)
        R32(esi, si);
        R32(ebp, bp);
        R32(eax, ax);
-       R32(orig_eax, orig_ax);
        R32(eip, ip);
        R32(esp, sp);
 
+       case offsetof(struct user32, regs.orig_eax):
+               /*
+                * Sign-extend the value so that orig_eax = -1
+                * causes (long)orig_ax < 0 tests to fire correctly.
+                */
+               regs->orig_ax = (long) (s32) value;
+               break;
+
        case offsetof(struct user32, regs.eflags):
                return set_flags(child, value);
 

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 56b72fb67f9b63498e67f194a5342ef6306c4f4c..1c83e5124c65813f7c966a9ed0e882627b2a84a9 100644 (file)
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -310,6 +310,35 @@ give_sigsegv:
        return -EFAULT;
 }
 
+/*
+ * Return -1L or the syscall number that @regs is executing.
+ */
+static long current_syscall(struct pt_regs *regs)
+{
+       /*
+        * We always sign-extend a -1 value being set here,
+        * so this is always either -1L or a syscall number.
+        */
+       return regs->orig_ax;
+}
+
+/*
+ * Return a value that is -EFOO if the system call in @regs->orig_ax
+ * returned an error.  This only works for @regs from @current.
+ */
+static long current_syscall_ret(struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_EMULATION
+       if (test_thread_flag(TIF_IA32))
+               /*
+                * Sign-extend the value so (int)-EFOO becomes (long)-EFOO
+                * and will match correctly in comparisons.
+                */
+               return (int) regs->ax;
+#endif
+       return regs->ax;
+}
+
 /*
  * OK, we're invoking a handler
  */    
@@ -327,9 +356,9 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
 #endif
 
        /* Are we from a system call? */
-       if ((long)regs->orig_ax >= 0) {
+       if (current_syscall(regs) >= 0) {
                /* If so, check system call restarting.. */
-               switch (regs->ax) {
+               switch (current_syscall_ret(regs)) {
                        case -ERESTART_RESTARTBLOCK:
                        case -ERESTARTNOHAND:
                                regs->ax = -EINTR;
@@ -426,10 +455,9 @@ static void do_signal(struct pt_regs *regs)
        }
 
        /* Did we come from a system call? */
-       if ((long)regs->orig_ax >= 0) {
+       if (current_syscall(regs) >= 0) {
                /* Restart the system call - no handlers present */
-               long res = regs->ax;
-               switch (res) {
+               switch (current_syscall_ret(regs)) {
                case -ERESTARTNOHAND:
                case -ERESTARTSYS:
                case -ERESTARTNOINTR:

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index ac3c959e271d2e6e4f16875f0c20b6f792bb8c88..8fe576baa14870c225f00606c84967d2941defe8 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -134,8 +134,6 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
                        return NULL;
        }
 
-       WARN_ON_ONCE(page_is_ram(pfn));
-
        switch (mode) {
        case IOR_MODE_UNCACHED:
        default:

diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 73aba7125203764b41a3cb3af48ac6d5d5cee5a4..2f9e9afcb9f4270d6e5f5a496f33999d6ce8298b 100644 (file)
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -342,12 +342,16 @@ static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
 
 pgd_t *pgd_alloc(struct mm_struct *mm)
 {
-       pgd_t *pgd = quicklist_alloc(0, GFP_KERNEL, pgd_ctor);
+       pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
 
-       mm->pgd = pgd;          /* so that alloc_pd can use it */
+       /* so that alloc_pd can use it */
+       mm->pgd = pgd;
+       if (pgd)
+               pgd_ctor(pgd);
 
        if (pgd && !pgd_prepopulate_pmd(mm, pgd)) {
-               quicklist_free(0, pgd_dtor, pgd);
+               pgd_dtor(pgd);
+               free_page((unsigned long)pgd);
                pgd = NULL;
        }
 
@@ -357,12 +361,8 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
 void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
        pgd_mop_up_pmds(mm, pgd);
-       quicklist_free(0, pgd_dtor, pgd);
-}
-
-void check_pgt_cache(void)
-{
-       quicklist_trim(0, pgd_dtor, 25, 16);
+       pgd_dtor(pgd);
+       free_page((unsigned long)pgd);
 }
 
 void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)

diff --git a/include/asm-x86/pgtable_32.h b/include/asm-x86/pgtable_32.h
index a842c7222b1eef0f598a8de4a4c5375506e0b2c5..4e6a0fca0b47c1fc1941ef368618c3ef691ddfcb 100644 (file)
--- a/include/asm-x86/pgtable_32.h
+++ b/include/asm-x86/pgtable_32.h
@@ -26,10 +26,9 @@ struct mm_struct;
 struct vm_area_struct;
 
 extern pgd_t swapper_pg_dir[1024];
-extern struct kmem_cache *pmd_cache;
-void check_pgt_cache(void);
 
-static inline void pgtable_cache_init(void) {}
+static inline void pgtable_cache_init(void) { }
+static inline void check_pgt_cache(void) { }
 void paging_init(void);