10 files changed, 93 insertions, 55 deletions

diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index f8ed0658404c..fbb47daf2459 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -4,11 +4,12 @@
 # create a compressed vmlinux image from the original vmlinux
 #
 
-targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
+targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.lzo head_$(BITS).o misc.o piggy.o
 
 KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
 KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
+cflags-$(CONFIG_X86_32) := -march=i386
 cflags-$(CONFIG_X86_64) := -mcmodel=small
 KBUILD_CFLAGS += $(cflags-y)
 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
@@ -48,10 +49,13 @@ $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
         $(call if_changed,bzip2)
 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
         $(call if_changed,lzma)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
+        $(call if_changed,lzo)
 
 suffix-$(CONFIG_KERNEL_GZIP)    := gz
 suffix-$(CONFIG_KERNEL_BZIP2)   := bz2
 suffix-$(CONFIG_KERNEL_LZMA)    := lzma
+suffix-$(CONFIG_KERNEL_LZO)     := lzo
 
 quiet_cmd_mkpiggy = MKPIGGY $@
       cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 077e1b69198e..faff0dc9c06a 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -107,8 +107,7 @@ ENTRY(startup_32)
         lgdt    gdt(%ebp)
 
         /* Enable PAE mode */
-        xorl    %eax, %eax
-        orl     $(X86_CR4_PAE), %eax
+        movl    $(X86_CR4_PAE), %eax
         movl    %eax, %cr4
 
  /*
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 842b2a36174a..51e240779a44 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -19,11 +19,6 @@
 #define _ASM_X86_DESC_H 1
 #endif
 
-#ifdef CONFIG_X86_64
-#define _LINUX_STRING_H_ 1
-#define __LINUX_BITMAP_H 1
-#endif
-
 #include <linux/linkage.h>
 #include <linux/screen_info.h>
 #include <linux/elf.h>
@@ -131,8 +126,8 @@ static void error(char *m);
 static struct boot_params *real_mode;           /* Pointer to real-mode data */
 static int quiet;
 
-static void *memset(void *s, int c, unsigned n);
-void *memcpy(void *dest, const void *src, unsigned n);
+void *memset(void *s, int c, size_t n);
+void *memcpy(void *dest, const void *src, size_t n);
 
 static void __putstr(int, const char *);
 #define putstr(__x)  __putstr(0, __x)
@@ -162,6 +157,10 @@ static int lines, cols;
 #include "../../../../lib/decompress_unlzma.c"
 #endif
 
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
 static void scroll(void)
 {
         int i;
@@ -181,11 +180,9 @@ static void __putstr(int error, const char *s)
                 return;
 #endif
 
-#ifdef CONFIG_X86_32
         if (real_mode->screen_info.orig_video_mode == 0 &&
             lines == 0 && cols == 0)
                 return;
-#endif
 
         x = real_mode->screen_info.orig_x;
         y = real_mode->screen_info.orig_y;
@@ -219,7 +216,7 @@ static void __putstr(int error, const char *s)
         outb(0xff & (pos >> 1), vidport+1);
 }
 
-static void *memset(void *s, int c, unsigned n)
+void *memset(void *s, int c, size_t n)
 {
         int i;
         char *ss = s;
@@ -229,7 +226,7 @@ static void *memset(void *s, int c, unsigned n)
         return s;
 }
 
-void *memcpy(void *dest, const void *src, unsigned n)
+void *memcpy(void *dest, const void *src, size_t n)
 {
         int i;
         const char *s = src;
diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/boot/compressed/relocs.c
index bbeb0c3fbd90..89bbf4e4d05d 100644
--- a/arch/x86/boot/compressed/relocs.c
+++ b/arch/x86/boot/compressed/relocs.c
@@ -9,6 +9,9 @@
 #include <byteswap.h>
 #define USE_BSD
 #include <endian.h>
+#include <regex.h>
+
+static void die(char *fmt, ...);
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 static Elf32_Ehdr ehdr;
@@ -30,25 +33,47 @@ static struct section *secs;
  * the address for which it has been compiled. Don't warn user about
  * absolute relocations present w.r.t these symbols.
  */
-static const char* safe_abs_relocs[] = {
-                "xen_irq_disable_direct_reloc",
-                "xen_save_fl_direct_reloc",
-};
+static const char abs_sym_regex[] =
+        "^(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);
+}
 
-static int is_safe_abs_reloc(const char* sym_name)
+/*
+ * 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)
 {
-        int i;
+        return !regexec(&rel_sym_regex_c, sym_name, 0, NULL, 0);
+}
 
-        for (i = 0; i < ARRAY_SIZE(safe_abs_relocs); i++) {
-                if (!strcmp(sym_name, safe_abs_relocs[i]))
-                        /* Match found */
-                        return 1;
-        }
-        if (strncmp(sym_name, "VDSO", 4) == 0)
-                return 1;
-        if (strncmp(sym_name, "__crc_", 6) == 0)
-                return 1;
-        return 0;
+static void regex_init(void)
+{
+        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);
+        }
+
+        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);
+        }
 }
 
 static void die(char *fmt, ...)
@@ -131,7 +156,7 @@ static const char *rel_type(unsigned type)
 #undef REL_TYPE
         };
         const char *name = "unknown type rel type name";
-        if (type < ARRAY_SIZE(type_name)) {
+        if (type < ARRAY_SIZE(type_name) && type_name[type]) {
                 name = type_name[type];
         }
         return name;
@@ -448,7 +473,7 @@ static void print_absolute_relocs(void)
                          * Before warning check if this absolute symbol
                          * relocation is harmless.
                          */
-                        if (is_safe_abs_reloc(name))
+                        if (is_abs_reloc(name) || is_rel_reloc(name))
                                 continue;
 
                         if (!printed) {
@@ -501,21 +526,26 @@ static void walk_relocs(void (*visit)(Elf32_Rel *rel, Elf32_Sym *sym))
                         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) {
+                        if (sym->st_shndx == SHN_ABS &&
+                            !is_rel_reloc(sym_name(sym_strtab, sym))) {
                                 continue;
                         }
-                        if (r_type == R_386_NONE || r_type == R_386_PC32) {
+                        switch (r_type) {
+                        case R_386_NONE:
+                        case R_386_PC32:
                                 /*
                                  * NONE can be ignored and and PC relative
                                  * relocations don't need to be adjusted.
                                  */
-                        }
-                        else if (r_type == R_386_32) {
+                                break;
+                        case R_386_32:
                                 /* Visit relocations that need to be adjusted */
                                 visit(rel, sym);
-                        }
-                        else {
-                                die("Unsupported relocation type: %d\n", r_type);
+                                break;
+                        default:
+                                die("Unsupported relocation type: %s (%d)\n",
+                                    rel_type(r_type), r_type);
+                                break;
                         }
                 }
         }
@@ -571,16 +601,15 @@ static void emit_relocs(int as_text)
         }
         else {
                 unsigned char buf[4];
-                buf[0] = buf[1] = buf[2] = buf[3] = 0;
                 /* Print a stop */
-                printf("%c%c%c%c", buf[0], buf[1], buf[2], buf[3]);
+                fwrite("\0\0\0\0", 4, 1, stdout);
                 /* Now print each relocation */
                 for (i = 0; i < reloc_count; i++) {
                         buf[0] = (relocs[i] >>  0) & 0xff;
                         buf[1] = (relocs[i] >>  8) & 0xff;
                         buf[2] = (relocs[i] >> 16) & 0xff;
                         buf[3] = (relocs[i] >> 24) & 0xff;
-                        printf("%c%c%c%c", buf[0], buf[1], buf[2], buf[3]);
+                        fwrite(buf, 4, 1, stdout);
                 }
         }
 }
@@ -598,6 +627,8 @@ int main(int argc, char **argv)
         FILE *fp;
         int i;
 
+        regex_init();
+
         show_absolute_syms = 0;
         show_absolute_relocs = 0;
         as_text = 0;
diff --git a/arch/x86/boot/compressed/vmlinux.lds.S b/arch/x86/boot/compressed/vmlinux.lds.S
index f4193bb48782..a6f1a59a5b0c 100644
--- a/arch/x86/boot/compressed/vmlinux.lds.S
+++ b/arch/x86/boot/compressed/vmlinux.lds.S
@@ -4,6 +4,7 @@ OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT)
 
 #undef i386
 
+#include <asm/cache.h>
 #include <asm/page_types.h>
 
 #ifdef CONFIG_X86_64
@@ -46,7 +47,7 @@ SECTIONS
                 *(.data.*)
                 _edata = . ;
         }
-        . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
+        . = ALIGN(L1_CACHE_BYTES);
         .bss : {
                 _bss = . ;
                 *(.bss)
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index b31cc54b4641..93e689f4bd86 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -16,7 +16,7 @@
  */
 
 #include <asm/segment.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
 #include <asm/boot.h>
 #include <asm/e820.h>
 #include <asm/page_types.h>
diff --git a/arch/x86/boot/mkcpustr.c b/arch/x86/boot/mkcpustr.c
index 8ef60f20b371..919257f526f2 100644
--- a/arch/x86/boot/mkcpustr.c
+++ b/arch/x86/boot/mkcpustr.c
@@ -22,7 +22,7 @@ int main(void)
         int i, j;
         const char *str;
 
-        printf("static const char x86_cap_strs[] = \n");
+        printf("static const char x86_cap_strs[] =\n");
 
         for (i = 0; i < NCAPINTS; i++) {
                 for (j = 0; j < 32; j++) {
diff --git a/arch/x86/boot/version.c b/arch/x86/boot/version.c
index 2723d9b5ce43..2b15aa488ffb 100644
--- a/arch/x86/boot/version.c
+++ b/arch/x86/boot/version.c
@@ -13,8 +13,8 @@
  */
 
 #include "boot.h"
-#include <linux/utsrelease.h>
-#include <linux/compile.h>
+#include <generated/utsrelease.h>
+#include <generated/compile.h>
 
 const char kernel_version[] =
         UTS_RELEASE " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") "
diff --git a/arch/x86/boot/video-vga.c b/arch/x86/boot/video-vga.c
index 819caa1f2008..ed7aeff786b2 100644
--- a/arch/x86/boot/video-vga.c
+++ b/arch/x86/boot/video-vga.c
@@ -42,22 +42,15 @@ static u8 vga_set_basic_mode(void)
 {
         struct biosregs ireg, oreg;
         u16 ax;
-        u8 rows;
         u8 mode;
 
         initregs(&ireg);
 
+        /* Query current mode */
         ax = 0x0f00;
         intcall(0x10, &ireg, &oreg);
         mode = oreg.al;
 
-        set_fs(0);
-        rows = rdfs8(0x484);    /* rows minus one */
-
-        if ((oreg.ax == 0x5003 || oreg.ax == 0x5007) &&
-            (rows == 0 || rows == 24))
-                return mode;
-
         if (mode != 3 && mode != 7)
                 mode = 3;
 
diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
index d42da3802499..43eda284d27f 100644
--- a/arch/x86/boot/video.c
+++ b/arch/x86/boot/video.c
@@ -27,6 +27,12 @@ static void store_cursor_position(void)
 
         boot_params.screen_info.orig_x = oreg.dl;
         boot_params.screen_info.orig_y = oreg.dh;
+
+        if (oreg.ch & 0x20)
+                boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;
+
+        if ((oreg.ch & 0x1f) > (oreg.cl & 0x1f))
+                boot_params.screen_info.flags |= VIDEO_FLAGS_NOCURSOR;
 }
 
 static void store_video_mode(void)
@@ -292,11 +298,18 @@ static void restore_screen(void)
         }
 
         /* Restore cursor position */
+        if (saved.curx >= xs)
+                saved.curx = xs-1;
+        if (saved.cury >= ys)
+                saved.cury = ys-1;
+
         initregs(&ireg);
         ireg.ah = 0x02;         /* Set cursor position */
         ireg.dh = saved.cury;
         ireg.dl = saved.curx;
         intcall(0x10, &ireg, NULL);
+
+        store_cursor_position();
 }
 
 void set_video(void)