[PATCH] vm86: Honor TF bit when emulating an instruction

[linux-2.6] / arch / i386 / kernel / setup.c

diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index d88ebdfa6ccd980c233cd206c7440b21af0ea476..9adbf710ec8deb648ee72314c514296e25fc6566 100644 (file)
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -44,6 +44,7 @@
 #include <linux/edd.h>
 #include <linux/nodemask.h>
 #include <linux/kexec.h>
+#include <linux/crash_dump.h>
 
 #include <video/edid.h>
 
@@ -59,6 +60,9 @@
 #include "setup_arch_pre.h"
 #include <bios_ebda.h>
 
+/* Forward Declaration. */
+void __init find_max_pfn(void);
+
 /* This value is set up by the early boot code to point to the value
    immediately after the boot time page tables.  It contains a *physical*
    address, and must not be in the .bss segment! */
@@ -366,12 +370,16 @@ static void __init limit_regions(unsigned long long size)
        int i;
 
        if (efi_enabled) {
-               for (i = 0; i < memmap.nr_map; i++) {
-                       current_addr = memmap.map[i].phys_addr +
-                                      (memmap.map[i].num_pages << 12);
-                       if (memmap.map[i].type == EFI_CONVENTIONAL_MEMORY) {
+               efi_memory_desc_t *md;
+               void *p;
+
+               for (p = memmap.map, i = 0; p < memmap.map_end;
+                       p += memmap.desc_size, i++) {
+                       md = p;
+                       current_addr = md->phys_addr + (md->num_pages << 12);
+                       if (md->type == EFI_CONVENTIONAL_MEMORY) {
                                if (current_addr >= size) {
-                                       memmap.map[i].num_pages -=
+                                       md->num_pages -=
                                                (((current_addr-size) + PAGE_SIZE-1) >> PAGE_SHIFT);
                                        memmap.nr_map = i + 1;
                                        return;
@@ -736,6 +744,15 @@ static void __init parse_cmdline_early (char ** cmdline_p)
                        if (to != command_line)
                                to--;
                        if (!memcmp(from+7, "exactmap", 8)) {
+#ifdef CONFIG_CRASH_DUMP
+                               /* If we are doing a crash dump, we
+                                * still need to know the real mem
+                                * size before original memory map is
+                                * reset.
+                                */
+                               find_max_pfn();
+                               saved_max_pfn = max_pfn;
+#endif
                                from += 8+7;
                                e820.nr_map = 0;
                                userdef = 1;
@@ -869,6 +886,13 @@ static void __init parse_cmdline_early (char ** cmdline_p)
                        }
                }
 #endif
+#ifdef CONFIG_CRASH_DUMP
+               /* elfcorehdr= specifies the location of elf core header
+                * stored by the crashed kernel.
+                */
+               else if (!memcmp(from, "elfcorehdr=", 11))
+                       elfcorehdr_addr = memparse(from+11, &from);
+#endif
 
                /*
                 * highmem=size forces highmem to be exactly 'size' bytes.
@@ -1394,7 +1418,7 @@ static struct nop {
    This runs before SMP is initialized to avoid SMP problems with
    self modifying code. This implies that assymetric systems where
    APs have less capabilities than the boot processor are not handled. 
-   In this case boot with "noreplacement". */ 
+   Tough. Make sure you disable such features by hand. */ 
 void apply_alternatives(void *start, void *end) 
 { 
        struct alt_instr *a; 
@@ -1422,24 +1446,12 @@ void apply_alternatives(void *start, void *end)
        }
 } 
 
-static int no_replacement __initdata = 0; 
- 
 void __init alternative_instructions(void)
 {
        extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
-       if (no_replacement) 
-               return;
        apply_alternatives(__alt_instructions, __alt_instructions_end);
 }
 
-static int __init noreplacement_setup(char *s)
-{ 
-     no_replacement = 1; 
-     return 0; 
-} 
-
-__setup("noreplacement", noreplacement_setup); 
-
 static char * __init machine_specific_memory_setup(void);
 
 #ifdef CONFIG_MCA