Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

19 files changed, 270 insertions, 117 deletions

diff --git a/arch/arm/mach-prima2/irq.c b/arch/arm/mach-prima2/irq.c
index 37c2de9b6f2..a7b9415d30f 100644
--- a/arch/arm/mach-prima2/irq.c
+++ b/arch/arm/mach-prima2/irq.c
@@ -42,7 +42,8 @@ sirfsoc_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
 static __init void sirfsoc_irq_init(void)
 {
 	sirfsoc_alloc_gc(sirfsoc_intc_base, 0, 32);
-	sirfsoc_alloc_gc(sirfsoc_intc_base + 4, 32, SIRFSOC_INTENAL_IRQ_END - 32);
+	sirfsoc_alloc_gc(sirfsoc_intc_base + 4, 32,
+			SIRFSOC_INTENAL_IRQ_END + 1 - 32);
 
 	writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL0);
 	writel_relaxed(0, sirfsoc_intc_base + SIRFSOC_INT_RISC_LEVEL1);
@@ -68,7 +69,8 @@ void __init sirfsoc_of_irq_init(void)
 	if (!sirfsoc_intc_base)
 		panic("unable to map intc cpu registers\n");
 
-	irq_domain_add_legacy(np, 32, 0, 0, &irq_domain_simple_ops, NULL);
+	irq_domain_add_legacy(np, SIRFSOC_INTENAL_IRQ_END + 1, 0, 0,
+		&irq_domain_simple_ops, NULL);
 
 	of_node_put(np);
 
diff --git a/arch/arm/mach-tegra/flowctrl.c b/arch/arm/mach-tegra/flowctrl.c
index fef66a7486e..f07488e0bd3 100644
--- a/arch/arm/mach-tegra/flowctrl.c
+++ b/arch/arm/mach-tegra/flowctrl.c
@@ -53,10 +53,10 @@ static void flowctrl_update(u8 offset, u32 value)
 
 void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value)
 {
-	return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value);
+	return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value);
 }
 
 void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value)
 {
-	return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value);
+	return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value);
 }
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index f0746753336..5bb48356d21 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -247,7 +247,9 @@ good_area:
 	return handle_mm_fault(mm, vma, addr & PAGE_MASK, flags);
 
 check_stack:
-	if (vma->vm_flags & VM_GROWSDOWN && !expand_stack(vma, addr))
+	/* Don't allow expansion below FIRST_USER_ADDRESS */
+	if (vma->vm_flags & VM_GROWSDOWN &&
+	    addr >= FIRST_USER_ADDRESS && !expand_stack(vma, addr))
 		goto good_area;
 out:
 	return fault;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 2c7cf2f9c83..aa78de8bfdd 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -489,7 +489,8 @@ static void __init build_mem_type_table(void)
 	 */
 	for (i = 0; i < ARRAY_SIZE(mem_types); i++) {
 		mem_types[i].prot_pte |= PTE_EXT_AF;
-		mem_types[i].prot_sect |= PMD_SECT_AF;
+		if (mem_types[i].prot_sect)
+			mem_types[i].prot_sect |= PMD_SECT_AF;
 	}
 	kern_pgprot |= PTE_EXT_AF;
 	vecs_pgprot |= PTE_EXT_AF;
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index bc683b8219b..b0197b2c857 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -11,6 +11,7 @@
 #include <linux/types.h>
 #include <linux/cpu.h>
 #include <linux/cpu_pm.h>
+#include <linux/hardirq.h>
 #include <linux/kernel.h>
 #include <linux/notifier.h>
 #include <linux/signal.h>
@@ -432,7 +433,10 @@ void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs)
 
 static void vfp_enable(void *unused)
 {
-	u32 access = get_copro_access();
+	u32 access;
+
+	BUG_ON(preemptible());
+	access = get_copro_access();
 
 	/*
 	 * Enable full access to VFP (cp10 and cp11)
@@ -573,12 +577,6 @@ int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp,
 	 * entry.
 	 */
 	hwstate->fpscr &= ~(FPSCR_LENGTH_MASK | FPSCR_STRIDE_MASK);
-
-	/*
-	 * Disable VFP in the hwstate so that we can detect if it gets
-	 * used.
-	 */
-	hwstate->fpexc &= ~FPEXC_EN;
 	return 0;
 }
 
@@ -591,12 +589,8 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp,
 	unsigned long fpexc;
 	int err = 0;
 
-	/*
-	 * If VFP has been used, then disable it to avoid corrupting
-	 * the new thread state.
-	 */
-	if (hwstate->fpexc & FPEXC_EN)
-		vfp_flush_hwstate(thread);
+	/* Disable VFP to avoid corrupting the new thread state. */
+	vfp_flush_hwstate(thread);
 
 	/*
 	 * Copy the floating point registers. There can be unused
@@ -657,7 +651,7 @@ static int __init vfp_init(void)
 	unsigned int cpu_arch = cpu_architecture();
 
 	if (cpu_arch >= CPU_ARCH_ARMv6)
-		vfp_enable(NULL);
+		on_each_cpu(vfp_enable, NULL, 1);
 
 	/*
 	 * First check that there is a VFP that we can use.
@@ -678,8 +672,6 @@ static int __init vfp_init(void)
 	} else {
 		hotcpu_notifier(vfp_hotplug, 0);
 
-		smp_call_function(vfp_enable, NULL, 1);
-
 		VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT;  /* Extract the architecture version */
 		printk("implementor %02x architecture %d part %02x variant %x rev %x\n",
 			(vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT,
diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
index 81c2e271d62..9b1a92b73f6 100644
--- a/arch/frv/include/asm/processor.h
+++ b/arch/frv/include/asm/processor.h
@@ -135,10 +135,6 @@ unsigned long get_wchan(struct task_struct *p);
 #define	KSTK_EIP(tsk)	((tsk)->thread.frame0->pc)
 #define	KSTK_ESP(tsk)	((tsk)->thread.frame0->sp)
 
-/* Allocation and freeing of basic task resources. */
-extern struct task_struct *alloc_task_struct_node(int node);
-extern void free_task_struct(struct task_struct *p);
-
 #define cpu_relax()    barrier()
 
 /* data cache prefetch */
diff --git a/arch/parisc/include/asm/prefetch.h b/arch/parisc/include/asm/prefetch.h
index c5edc60c059..1ee7c82672c 100644
--- a/arch/parisc/include/asm/prefetch.h
+++ b/arch/parisc/include/asm/prefetch.h
@@ -21,7 +21,12 @@
 #define ARCH_HAS_PREFETCH
 static inline void prefetch(const void *addr)
 {
-	__asm__("ldw 0(%0), %%r0" : : "r" (addr));
+	__asm__(
+#ifndef CONFIG_PA20
+		/* Need to avoid prefetch of NULL on PA7300LC */
+		"	extrw,u,= %0,31,32,%%r0\n"
+#endif
+		"	ldw 0(%0), %%r0" : : "r" (addr));
 }
 
 /* LDD is a PA2.0 addition. */
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 6f059443914..53503421702 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -581,7 +581,11 @@
 	 */
 	cmpiclr,=	0x01,\tmp,%r0
 	ldi		(_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
+#ifdef CONFIG_64BIT
 	depd,z		\prot,8,7,\prot
+#else
+	depw,z		\prot,8,7,\prot
+#endif
 	/*
 	 * OK, it is in the temp alias region, check whether "from" or "to".
 	 * Check "subtle" note in pacache.S re: r23/r26.
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 93ff3d90edd..5d7218ad885 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -692,7 +692,7 @@ ENTRY(flush_icache_page_asm)
 
 	/* Purge any old translation */
 
-	pitlb		(%sr0,%r28)
+	pitlb		(%sr4,%r28)
 
 	ldil		L%icache_stride, %r1
 	ldw		R%icache_stride(%r1), %r1
@@ -706,27 +706,29 @@ ENTRY(flush_icache_page_asm)
 	sub		%r25, %r1, %r25
 
 
-1:      fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
-	fic,m		%r1(%r28)
+	/* fic only has the type 26 form on PA1.1, requiring an
+	 * explicit space specification, so use %sr4 */
+1:      fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
+	fic,m		%r1(%sr4,%r28)
 	cmpb,COND(<<)		%r28, %r25,1b
-	fic,m		%r1(%r28)
+	fic,m		%r1(%sr4,%r28)
 
 	sync
 	bv		%r0(%r2)
-	pitlb		(%sr0,%r25)
+	pitlb		(%sr4,%r25)
 	.exit
 
 	.procend
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 96033e2d684..74239dd77e0 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -11,6 +11,7 @@ config TILE
 	select GENERIC_IRQ_PROBE
 	select GENERIC_PENDING_IRQ if SMP
 	select GENERIC_IRQ_SHOW
+	select HAVE_SYSCALL_WRAPPERS if TILEGX
 	select SYS_HYPERVISOR
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 41a7237606a..94e91e401da 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -134,6 +134,9 @@ KBUILD_CFLAGS += $(call cc-option,-mno-avx,)
 KBUILD_CFLAGS += $(mflags-y)
 KBUILD_AFLAGS += $(mflags-y)
 
+archscripts:
+	$(Q)$(MAKE) $(build)=arch/x86/tools relocs
+
 ###
 # Syscall table generation
 
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index fd55a2ff3ad..e398bb5d63b 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -40,13 +40,12 @@ OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
 $(obj)/vmlinux.bin: vmlinux FORCE
 	$(call if_changed,objcopy)
 
+targets += vmlinux.bin.all vmlinux.relocs
 
-targets += vmlinux.bin.all vmlinux.relocs relocs
-hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
-
+CMD_RELOCS = arch/x86/tools/relocs
 quiet_cmd_relocs = RELOCS  $@
-      cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
-$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
+      cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
+$(obj)/vmlinux.relocs: vmlinux FORCE
 	$(call if_changed,relocs)
 
 vmlinux.bin.all-y := $(obj)/vmlinux.bin
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 734c3767cfa..183922e13de 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
@@ -170,6 +170,9 @@ static inline int kvm_para_available(void)
 	unsigned int eax, ebx, ecx, edx;
 	char signature[13];
 
+	if (boot_cpu_data.cpuid_level < 0)
+		return 0;	/* So we don't blow up on old processors */
+
 	cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
 	memcpy(signature + 0, &ebx, 4);
 	memcpy(signature + 4, &ecx, 4);
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index a415b1f4436..7c439fe4941 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -593,7 +593,7 @@ void __init acpi_set_irq_model_ioapic(void)
 #ifdef CONFIG_ACPI_HOTPLUG_CPU
 #include <acpi/processor.h>
 
-static void __cpuinitdata acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
+static void __cpuinit acpi_map_cpu2node(acpi_handle handle, int cpu, int physid)
 {
 #ifdef CONFIG_ACPI_NUMA
 	int nid;
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index d086a09c087..11c9166c333 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -945,9 +945,10 @@ struct mce_info {
 	atomic_t		inuse;
 	struct task_struct	*t;
 	__u64			paddr;
+	int			restartable;
 } mce_info[MCE_INFO_MAX];
 
-static void mce_save_info(__u64 addr)
+static void mce_save_info(__u64 addr, int c)
 {
 	struct mce_info *mi;
 
@@ -955,6 +956,7 @@ static void mce_save_info(__u64 addr)
 		if (atomic_cmpxchg(&mi->inuse, 0, 1) == 0) {
 			mi->t = current;
 			mi->paddr = addr;
+			mi->restartable = c;
 			return;
 		}
 	}
@@ -1130,7 +1132,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 			mce_panic("Fatal machine check on current CPU", &m, msg);
 		if (worst == MCE_AR_SEVERITY) {
 			/* schedule action before return to userland */
-			mce_save_info(m.addr);
+			mce_save_info(m.addr, m.mcgstatus & MCG_STATUS_RIPV);
 			set_thread_flag(TIF_MCE_NOTIFY);
 		} else if (kill_it) {
 			force_sig(SIGBUS, current);
@@ -1179,7 +1181,13 @@ void mce_notify_process(void)
 
 	pr_err("Uncorrected hardware memory error in user-access at %llx",
 		 mi->paddr);
-	if (memory_failure(pfn, MCE_VECTOR, MF_ACTION_REQUIRED) < 0) {
+	/*
+	 * We must call memory_failure() here even if the current process is
+	 * doomed. We still need to mark the page as poisoned and alert any
+	 * other users of the page.
+	 */
+	if (memory_failure(pfn, MCE_VECTOR, MF_ACTION_REQUIRED) < 0 ||
+			   mi->restartable == 0) {
 		pr_err("Memory error not recovered");
 		force_sig(SIGBUS, current);
 	}
diff --git a/arch/x86/kernel/microcode_intel.c b/arch/x86/kernel/microcode_intel.c
index 3ca42d0e43a..0327e2b3c40 100644
--- a/arch/x86/kernel/microcode_intel.c
+++ b/arch/x86/kernel/microcode_intel.c
@@ -147,12 +147,6 @@ static int collect_cpu_info(int cpu_num, struct cpu_signature *csig)
 
 	memset(csig, 0, sizeof(*csig));
 
-	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
-	    cpu_has(c, X86_FEATURE_IA64)) {
-		pr_err("CPU%d not a capable Intel processor\n", cpu_num);
-		return -1;
-	}
-
 	csig->sig = cpuid_eax(0x00000001);
 
 	if ((c->x86_model >= 5) || (c->x86 > 6)) {
@@ -463,6 +457,14 @@ static struct microcode_ops microcode_intel_ops = {
 
 struct microcode_ops * __init init_intel_microcode(void)
 {
+	struct cpuinfo_x86 *c = &cpu_data(0);
+
+	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
+	    cpu_has(c, X86_FEATURE_IA64)) {
+		pr_err("Intel CPU family 0x%x not supported\n", c->x86);
+		return NULL;
+	}
+
 	return &microcode_intel_ops;
 }
 
diff --git a/arch/x86/tools/.gitignore b/arch/x86/tools/.gitignore
new file mode 100644
index 00000000000..be0ed065249
--- /dev/null
+++ b/arch/x86/tools/.gitignore
@@ -0,0 +1 @@
+relocs
diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
index d511aa97533..733057b435b 100644
--- a/arch/x86/tools/Makefile
+++ b/arch/x86/tools/Makefile
@@ -36,3 +36,7 @@ HOSTCFLAGS_insn_sanity.o := -Wall -I$(objtree)/arch/x86/lib/ -I$(srctree)/arch/x
 $(obj)/test_get_len.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/inat.c $(srctree)/arch/x86/include/asm/inat_types.h $(srctree)/arch/x86/include/asm/inat.h $(srctree)/arch/x86/include/asm/insn.h $(objtree)/arch/x86/lib/inat-tables.c
 
 $(obj)/insn_sanity.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/inat.c $(srctree)/arch/x86/include/asm/inat_types.h $(srctree)/arch/x86/include/asm/inat.h $(srctree)/arch/x86/include/asm/insn.h $(objtree)/arch/x86/lib/inat-tables.c
+
+HOST_EXTRACFLAGS += -I$(srctree)/tools/include
+hostprogs-y	+= relocs
+relocs: $(obj)/relocs
diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/tools/relocs.c
index fb7117a4ade..b43cfcd9bf4 100644
--- a/arch/x86/boot/compressed/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -18,6 +18,8 @@ static void die(char *fmt, ...);
 static Elf32_Ehdr ehdr;
 static unsigned long reloc_count, reloc_idx;
 static unsigned long *relocs;
+static unsigned long reloc16_count, reloc16_idx;
+static unsigned long *relocs16;
 
 struct section {
 	Elf32_Shdr     shdr;
@@ -28,52 +30,86 @@ struct section {
 };
 static struct section *secs;
 
+enum symtype {
+	S_ABS,
+	S_REL,
+	S_SEG,
+	S_LIN,
+	S_NSYMTYPES
+};
+
+static const char * const sym_regex_kernel[S_NSYMTYPES] = {
 /*
  * Following symbols have been audited. There values are constant and do
  * not change if bzImage is loaded at a different physical address than
  * the address for which it has been compiled. Don't warn user about
  * absolute relocations present w.r.t these symbols.
  */
-static const char abs_sym_regex[] =
+	[S_ABS] =
 	"^(xen_irq_disable_direct_reloc$|"
 	"xen_save_fl_direct_reloc$|"
 	"VDSO|"
-	"__crc_)";
-static regex_t abs_sym_regex_c;
-static int is_abs_reloc(const char *sym_name)
-{
-	return !regexec(&abs_sym_regex_c, sym_name, 0, NULL, 0);
-}
+	"__crc_)",
 
 /*
  * These symbols are known to be relative, even if the linker marks them
  * as absolute (typically defined outside any section in the linker script.)
  */
-static const char rel_sym_regex[] =
-	"^_end$";
-static regex_t rel_sym_regex_c;
-static int is_rel_reloc(const char *sym_name)
+	[S_REL] =
+	"^(__init_(begin|end)|"
+	"__x86_cpu_dev_(start|end)|"
+	"(__parainstructions|__alt_instructions)(|_end)|"
+	"(__iommu_table|__apicdrivers|__smp_locks)(|_end)|"
+	"_end)$"
+};
+
+
+static const char * const sym_regex_realmode[S_NSYMTYPES] = {
+/*
+ * These are 16-bit segment symbols when compiling 16-bit code.
+ */
+	[S_SEG] =
+	"^real_mode_seg$",
+
+/*
+ * These are offsets belonging to segments, as opposed to linear addresses,
+ * when compiling 16-bit code.
+ */
+	[S_LIN] =
+	"^pa_",
+};
+
+static const char * const *sym_regex;
+
+static regex_t sym_regex_c[S_NSYMTYPES];
+static int is_reloc(enum symtype type, const char *sym_name)
 {
-	return !regexec(&rel_sym_regex_c, sym_name, 0, NULL, 0);
+	return sym_regex[type] &&
+		!regexec(&sym_regex_c[type], sym_name, 0, NULL, 0);
 }
 
-static void regex_init(void)
+static void regex_init(int use_real_mode)
 {
         char errbuf[128];
         int err;
-	
-        err = regcomp(&abs_sym_regex_c, abs_sym_regex,
-                      REG_EXTENDED|REG_NOSUB);
-        if (err) {
-                regerror(err, &abs_sym_regex_c, errbuf, sizeof errbuf);
-                die("%s", errbuf);
-        }
+	int i;
+
+	if (use_real_mode)
+		sym_regex = sym_regex_realmode;
+	else
+		sym_regex = sym_regex_kernel;
 
-        err = regcomp(&rel_sym_regex_c, rel_sym_regex,
-                      REG_EXTENDED|REG_NOSUB);
-        if (err) {
-                regerror(err, &rel_sym_regex_c, errbuf, sizeof errbuf);
-                die("%s", errbuf);
+	for (i = 0; i < S_NSYMTYPES; i++) {
+		if (!sym_regex[i])
+			continue;
+
+		err = regcomp(&sym_regex_c[i], sym_regex[i],
+			      REG_EXTENDED|REG_NOSUB);
+
+		if (err) {
+			regerror(err, &sym_regex_c[i], errbuf, sizeof errbuf);
+			die("%s", errbuf);
+		}
         }
 }
 
@@ -154,6 +190,10 @@ static const char *rel_type(unsigned type)
 		REL_TYPE(R_386_RELATIVE),
 		REL_TYPE(R_386_GOTOFF),
 		REL_TYPE(R_386_GOTPC),
+		REL_TYPE(R_386_8),
+		REL_TYPE(R_386_PC8),
+		REL_TYPE(R_386_16),
+		REL_TYPE(R_386_PC16),
 #undef REL_TYPE
 	};
 	const char *name = "unknown type rel type name";
@@ -189,7 +229,7 @@ static const char *sym_name(const char *sym_strtab, Elf32_Sym *sym)
 		name = sym_strtab + sym->st_name;
 	}
 	else {
-		name = sec_name(secs[sym->st_shndx].shdr.sh_name);
+		name = sec_name(sym->st_shndx);
 	}
 	return name;
 }
@@ -472,7 +512,7 @@ static void print_absolute_relocs(void)
 			 * Before warning check if this absolute symbol
 			 * relocation is harmless.
 			 */
-			if (is_abs_reloc(name) || is_rel_reloc(name))
+			if (is_reloc(S_ABS, name) || is_reloc(S_REL, name))
 				continue;
 
 			if (!printed) {
@@ -496,7 +536,8 @@ static void print_absolute_relocs(void)
 		printf("\n");
 }
 
-static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
+static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym),
+			int use_real_mode)
 {
 	int i;
 	/* Walk through the relocations */
@@ -521,30 +562,67 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
 			Elf32_Rel *rel;
 			Elf32_Sym *sym;
 			unsigned r_type;
+			const char *symname;
+			int shn_abs;
+
 			rel = &sec->reltab[j];
 			sym = &sh_symtab[ELF32_R_SYM(rel->r_info)];
 			r_type = ELF32_R_TYPE(rel->r_info);
-			/* Don't visit relocations to absolute symbols */
-			if (sym->st_shndx == SHN_ABS &&
-			    !is_rel_reloc(sym_name(sym_strtab, sym))) {
-				continue;
-			}
+
+			shn_abs = sym->st_shndx == SHN_ABS;
+
 			switch (r_type) {
 			case R_386_NONE:
 			case R_386_PC32:
+			case R_386_PC16:
+			case R_386_PC8:
 				/*
 				 * NONE can be ignored and and PC relative
 				 * relocations don't need to be adjusted.
 				 */
 				break;
+
+			case R_386_16:
+				symname = sym_name(sym_strtab, sym);
+				if (!use_real_mode)
+					goto bad;
+				if (shn_abs) {
+					if (is_reloc(S_ABS, symname))
+						break;
+					else if (!is_reloc(S_SEG, symname))
+						goto bad;
+				} else {
+					if (is_reloc(S_LIN, symname))
+						goto bad;
+					else
+						break;
+				}
+				visit(rel, sym);
+				break;
+
 			case R_386_32:
-				/* Visit relocations that need to be adjusted */
+				symname = sym_name(sym_strtab, sym);
+				if (shn_abs) {
+					if (is_reloc(S_ABS, symname))
+						break;
+					else if (!is_reloc(S_REL, symname))
+						goto bad;
+				} else {
+					if (use_real_mode &&
+					    !is_reloc(S_LIN, symname))
+						break;
+				}
 				visit(rel, sym);
 				break;
 			default:
 				die("Unsupported relocation type: %s (%d)\n",
 				    rel_type(r_type), r_type);
 				break;
+			bad:
+				symname = sym_name(sym_strtab, sym);
+				die("Invalid %s %s relocation: %s\n",
+				    shn_abs ? "absolute" : "relative",
+				    rel_type(r_type), symname);
 			}
 		}
 	}
@@ -552,13 +630,19 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
 
 static void count_reloc(Elf32_Rel *rel, Elf32_Sym *sym)
 {
-	reloc_count += 1;
+	if (ELF32_R_TYPE(rel->r_info) == R_386_16)
+		reloc16_count++;
+	else
+		reloc_count++;
 }
 
 static void collect_reloc(Elf32_Rel *rel, Elf32_Sym *sym)
 {
 	/* Remember the address that needs to be adjusted. */
-	relocs[reloc_idx++] = rel->r_offset;
+	if (ELF32_R_TYPE(rel->r_info) == R_386_16)
+		relocs16[reloc16_idx++] = rel->r_offset;
+	else
+		relocs[reloc_idx++] = rel->r_offset;
 }
 
 static int cmp_relocs(const void *va, const void *vb)
@@ -568,23 +652,41 @@ static int cmp_relocs(const void *va, const void *vb)
 	return (*a == *b)? 0 : (*a > *b)? 1 : -1;
 }
 
-static void emit_relocs(int as_text)
+static int write32(unsigned int v, FILE *f)
+{
+	unsigned char buf[4];
+
+	put_unaligned_le32(v, buf);
+	return fwrite(buf, 1, 4, f) == 4 ? 0 : -1;
+}
+
+static void emit_relocs(int as_text, int use_real_mode)
 {
 	int i;
 	/* Count how many relocations I have and allocate space for them. */
 	reloc_count = 0;
-	walk_relocs(count_reloc);
+	walk_relocs(count_reloc, use_real_mode);
 	relocs = malloc(reloc_count * sizeof(relocs[0]));
 	if (!relocs) {
 		die("malloc of %d entries for relocs failed\n",
 			reloc_count);
 	}
+
+	relocs16 = malloc(reloc16_count * sizeof(relocs[0]));
+	if (!relocs16) {
+		die("malloc of %d entries for relocs16 failed\n",
+			reloc16_count);
+	}
 	/* Collect up the relocations */
 	reloc_idx = 0;
-	walk_relocs(collect_reloc);
+	walk_relocs(collect_reloc, use_real_mode);
+
+	if (reloc16_count && !use_real_mode)
+		die("Segment relocations found but --realmode not specified\n");
 
 	/* Order the relocations for more efficient processing */
 	qsort(relocs, reloc_count, sizeof(relocs[0]), cmp_relocs);
+	qsort(relocs16, reloc16_count, sizeof(relocs16[0]), cmp_relocs);
 
 	/* Print the relocations */
 	if (as_text) {
@@ -593,58 +695,83 @@ static void emit_relocs(int as_text)
 		 */
 		printf(".section \".data.reloc\",\"a\"\n");
 		printf(".balign 4\n");
-		for (i = 0; i < reloc_count; i++) {
-			printf("\t .long 0x%08lx\n", relocs[i]);
+		if (use_real_mode) {
+			printf("\t.long %lu\n", reloc16_count);
+			for (i = 0; i < reloc16_count; i++)
+				printf("\t.long 0x%08lx\n", relocs16[i]);
+			printf("\t.long %lu\n", reloc_count);
+			for (i = 0; i < reloc_count; i++) {
+				printf("\t.long 0x%08lx\n", relocs[i]);
+			}
+		} else {
+			/* Print a stop */
+			printf("\t.long 0x%08lx\n", (unsigned long)0);
+			for (i = 0; i < reloc_count; i++) {
+				printf("\t.long 0x%08lx\n", relocs[i]);
+			}
 		}
+
 		printf("\n");
 	}
 	else {
-		unsigned char buf[4];
-		/* Print a stop */
-		fwrite("\0\0\0\0", 4, 1, stdout);
-		/* Now print each relocation */
-		for (i = 0; i < reloc_count; i++) {
-			put_unaligned_le32(relocs[i], buf);
-			fwrite(buf, 4, 1, stdout);
+		if (use_real_mode) {
+			write32(reloc16_count, stdout);
+			for (i = 0; i < reloc16_count; i++)
+				write32(relocs16[i], stdout);
+			write32(reloc_count, stdout);
+
+			/* Now print each relocation */
+			for (i = 0; i < reloc_count; i++)
+				write32(relocs[i], stdout);
+		} else {
+			/* Print a stop */
+			write32(0, stdout);
+
+			/* Now print each relocation */
+			for (i = 0; i < reloc_count; i++) {
+				write32(relocs[i], stdout);
+			}
 		}
 	}
 }
 
 static void usage(void)
 {
-	die("relocs [--abs-syms |--abs-relocs | --text] vmlinux\n");
+	die("relocs [--abs-syms|--abs-relocs|--text|--realmode] vmlinux\n");
 }
 
 int main(int argc, char **argv)
 {
 	int show_absolute_syms, show_absolute_relocs;
-	int as_text;
+	int as_text, use_real_mode;
 	const char *fname;
 	FILE *fp;
 	int i;
 
-	regex_init();
-
 	show_absolute_syms = 0;
 	show_absolute_relocs = 0;
 	as_text = 0;
+	use_real_mode = 0;
 	fname = NULL;
 	for (i = 1; i < argc; i++) {
 		char *arg = argv[i];
 		if (*arg == '-') {
-			if (strcmp(argv[1], "--abs-syms") == 0) {
+			if (strcmp(arg, "--abs-syms") == 0) {
 				show_absolute_syms = 1;
 				continue;
 			}
-
-			if (strcmp(argv[1], "--abs-relocs") == 0) {
+			if (strcmp(arg, "--abs-relocs") == 0) {
 				show_absolute_relocs = 1;
 				continue;
 			}
-			else if (strcmp(argv[1], "--text") == 0) {
+			if (strcmp(arg, "--text") == 0) {
 				as_text = 1;
 				continue;
 			}
+			if (strcmp(arg, "--realmode") == 0) {
+				use_real_mode = 1;
+				continue;
+			}
 		}
 		else if (!fname) {
 			fname = arg;
@@ -655,6 +782,7 @@ int main(int argc, char **argv)
 	if (!fname) {
 		usage();
 	}
+	regex_init(use_real_mode);
 	fp = fopen(fname, "r");
 	if (!fp) {
 		die("Cannot open %s: %s\n",
@@ -673,6 +801,6 @@ int main(int argc, char **argv)
 		print_absolute_relocs();
 		return 0;
 	}
-	emit_relocs(as_text);
+	emit_relocs(as_text, use_real_mode);
 	return 0;
 }