Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, mtrr: remove debug message
  x86: disable stack-protector for __restore_processor_state()
  x86: fix is_io_mapping_possible() build warning on i386 allnoconfig
  x86, setup: compile with -DDISABLE_BRANCH_PROFILING
  x86/dma: unify definition of pci_unmap_addr* and pci_unmap_len macros
  x86, mm: fix misuse of debug_kmap_atomic
  x86: remove duplicated code with pcpu_need_numa()
  x86,percpu: fix inverted NUMA test in setup_pcpu_remap()
  x86: signal: check sas_ss_size instead of sas_ss_flags()

10 files changed, 43 insertions, 81 deletions

diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index fb737ce5888d..6633b6e7505a 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -57,6 +57,7 @@ $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
 # How to compile the 16-bit code.  Note we always compile for -march=i386,
 # that way we can complain to the user if the CPU is insufficient.
 KBUILD_CFLAGS   := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
+                   -DDISABLE_BRANCH_PROFILING \
                    -Wall -Wstrict-prototypes \
                    -march=i386 -mregparm=3 \
                    -include $(srctree)/$(src)/code16gcc.h \
@@ -66,7 +67,7 @@ KBUILD_CFLAGS	:= $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
                         $(call cc-option, -fno-unit-at-a-time)) \
                    $(call cc-option, -fno-stack-protector) \
                    $(call cc-option, -mpreferred-stack-boundary=2)
-KBUILD_CFLAGS +=   $(call cc-option,-m32)
+KBUILD_CFLAGS   += $(call cc-option, -m32)
 KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
 
 $(obj)/bzImage: asflags-y  := $(SVGA_MODE)
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 3ca4c194b8e5..65551c9f8571 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -8,6 +8,7 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma h
 
 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
+KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
 cflags-$(CONFIG_X86_64) := -mcmodel=small
 KBUILD_CFLAGS += $(cflags-y)
 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index a0301bfeb954..e545ea01abcf 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -89,12 +89,40 @@ extern void pci_iommu_alloc(void);
 /* MSI arch hook */
 #define arch_setup_msi_irqs arch_setup_msi_irqs
 
-#endif  /* __KERNEL__ */
+#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
+
+#if defined(CONFIG_X86_64) || defined(CONFIG_DMA_API_DEBUG)
+
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
+                dma_addr_t ADDR_NAME;
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
+                __u32 LEN_NAME;
+#define pci_unmap_addr(PTR, ADDR_NAME)                  \
+                ((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
+                (((PTR)->ADDR_NAME) = (VAL))
+#define pci_unmap_len(PTR, LEN_NAME)                    \
+                ((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
+                (((PTR)->LEN_NAME) = (VAL))
 
-#ifdef CONFIG_X86_32
-# include "pci_32.h"
 #else
-# include "pci_64.h"
+
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       dma_addr_t ADDR_NAME[0];
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) unsigned LEN_NAME[0];
+#define pci_unmap_addr(PTR, ADDR_NAME)  sizeof((PTR)->ADDR_NAME)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
+                do { break; } while (pci_unmap_addr(PTR, ADDR_NAME))
+#define pci_unmap_len(PTR, LEN_NAME)            sizeof((PTR)->LEN_NAME)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
+                do { break; } while (pci_unmap_len(PTR, LEN_NAME))
+
+#endif
+
+#endif  /* __KERNEL__ */
+
+#ifdef CONFIG_X86_64
+#include "pci_64.h"
 #endif
 
 /* implement the pci_ DMA API in terms of the generic device dma_ one */
diff --git a/arch/x86/include/asm/pci_32.h b/arch/x86/include/asm/pci_32.h
deleted file mode 100644
index 6f1213a6ef4f..000000000000
--- a/arch/x86/include/asm/pci_32.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef _ASM_X86_PCI_32_H
-#define _ASM_X86_PCI_32_H
-
-
-#ifdef __KERNEL__
-
-
-/* Dynamic DMA mapping stuff.
- * i386 has everything mapped statically.
- */
-
-struct pci_dev;
-
-/* The PCI address space does equal the physical memory
- * address space.  The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS     (1)
-
-/* pci_unmap_{page,single} is a nop so... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       dma_addr_t ADDR_NAME[0];
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) unsigned LEN_NAME[0];
-#define pci_unmap_addr(PTR, ADDR_NAME)  sizeof((PTR)->ADDR_NAME)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
-        do { break; } while (pci_unmap_addr(PTR, ADDR_NAME))
-#define pci_unmap_len(PTR, LEN_NAME)            sizeof((PTR)->LEN_NAME)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
-        do { break; } while (pci_unmap_len(PTR, LEN_NAME))
-
-
-#endif /* __KERNEL__ */
-
-
-#endif /* _ASM_X86_PCI_32_H */
diff --git a/arch/x86/include/asm/pci_64.h b/arch/x86/include/asm/pci_64.h
index 4da207982777..ae5e40f67daf 100644
--- a/arch/x86/include/asm/pci_64.h
+++ b/arch/x86/include/asm/pci_64.h
@@ -24,28 +24,6 @@ extern int (*pci_config_write)(int seg, int bus, int dev, int fn,
 
 extern void dma32_reserve_bootmem(void);
 
-/* The PCI address space does equal the physical memory
- * address space.  The networking and block device layers use
- * this boolean for bounce buffer decisions
- *
- * On AMD64 it mostly equals, but we set it to zero if a hardware
- * IOMMU (gart) of sotware IOMMU (swiotlb) is available.
- */
-#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
-
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)       \
-        dma_addr_t ADDR_NAME;
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)         \
-        __u32 LEN_NAME;
-#define pci_unmap_addr(PTR, ADDR_NAME)                  \
-        ((PTR)->ADDR_NAME)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)         \
-        (((PTR)->ADDR_NAME) = (VAL))
-#define pci_unmap_len(PTR, LEN_NAME)                    \
-        ((PTR)->LEN_NAME)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL)           \
-        (((PTR)->LEN_NAME) = (VAL))
-
 #endif /* __KERNEL__ */
 
 #endif /* _ASM_X86_PCI_64_H */
diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index 37f28fc7cf95..0b776c09aff3 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -462,9 +462,6 @@ static void generic_get_mtrr(unsigned int reg, unsigned long *base,
         *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT;
         *type = base_lo & 0xff;
 
-        printk(KERN_DEBUG "  get_mtrr: cpu%d reg%02d base=%010lx size=%010lx %s\n",
-                        cpu, reg, *base, *size,
-                        mtrr_attrib_to_str(*type & 0xff));
 out_put_cpu:
         put_cpu();
 }
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 400331b50a53..3a97a4cf1872 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -153,7 +153,6 @@ static struct page * __init pcpur_get_page(unsigned int cpu, int pageno)
 static ssize_t __init setup_pcpu_remap(size_t static_size)
 {
         static struct vm_struct vm;
-        pg_data_t *last;
         size_t ptrs_size, dyn_size;
         unsigned int cpu;
         ssize_t ret;
@@ -162,22 +161,9 @@ static ssize_t __init setup_pcpu_remap(size_t static_size)
          * If large page isn't supported, there's no benefit in doing
          * this.  Also, on non-NUMA, embedding is better.
          */
-        if (!cpu_has_pse || pcpu_need_numa())
+        if (!cpu_has_pse || !pcpu_need_numa())
                 return -EINVAL;
 
-        last = NULL;
-        for_each_possible_cpu(cpu) {
-                int node = early_cpu_to_node(cpu);
-
-                if (node_online(node) && NODE_DATA(node) &&
-                    last && last != NODE_DATA(node))
-                        goto proceed;
-
-                last = NODE_DATA(node);
-        }
-        return -EINVAL;
-
-proceed:
         /*
          * Currently supports only single page.  Supporting multiple
          * pages won't be too difficult if it ever becomes necessary.
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index dfcc74ab0ab6..14425166b8e3 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -221,7 +221,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size,
         if (!onsigstack) {
                 /* This is the X/Open sanctioned signal stack switching.  */
                 if (ka->sa.sa_flags & SA_ONSTACK) {
-                        if (sas_ss_flags(sp) == 0)
+                        if (current->sas_ss_size)
                                 sp = current->sas_ss_sp + current->sas_ss_size;
                 } else {
 #ifdef CONFIG_X86_32
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index e331f77348a7..8056545e2d39 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -23,7 +23,7 @@
 
 int is_io_mapping_possible(resource_size_t base, unsigned long size)
 {
-#ifndef CONFIG_X86_PAE
+#if !defined(CONFIG_X86_PAE) && defined(CONFIG_PHYS_ADDR_T_64BIT)
         /* There is no way to map greater than 1 << 32 address without PAE */
         if (base + size > 0x100000000ULL)
                 return 0;
diff --git a/arch/x86/power/Makefile b/arch/x86/power/Makefile
index 9ff4d5b55ad1..58b32db33125 100644
--- a/arch/x86/power/Makefile
+++ b/arch/x86/power/Makefile
@@ -1,2 +1,7 @@
+# __restore_processor_state() restores %gs after S3 resume and so should not
+# itself be stack-protected
+nostackp := $(call cc-option, -fno-stack-protector)
+CFLAGS_cpu_$(BITS).o    := $(nostackp)
+
 obj-$(CONFIG_PM_SLEEP)          += cpu_$(BITS).o
 obj-$(CONFIG_HIBERNATION)       += hibernate_$(BITS).o hibernate_asm_$(BITS).o