rpms/kexec-tools
7
0
Fork 0
Code Issues Pull Requests Releases Activity
9bcc5f1b27
kexec-tools/kexec-tools-1.101-relocatable-bzimage.patch
Neil Horman 9bcc5f1b27 Related: bz221272
2007-01-05 17:47:37 +00:00

173 lines
6.2 KiB
Diff
Raw Blame History

--- kexec-tools-1.101/include/x86/x86-linux.h.orig 2004-12-20 05:10:21.000000000 -0500
+++ kexec-tools-1.101/include/x86/x86-linux.h 2007-01-05 11:05:30.000000000 -0500
@@ -141,7 +141,10 @@ struct x86_linux_param_header {
uint32_t high_filesz; /* 0x254 */
uint8_t reserved15[0x2d0 - 0x258]; /* 0x258 */
#else
- uint8_t reserved15[0x2d0 - 0x230]; /* 0x230 */
+ /* 2.04+ */
+ uint32_t kernel_alignment; /* 0x230 */
+ uint8_t relocatable_kernel; /* 0x234 */
+ uint8_t reserved15[0x2d0 - 0x235]; /* 0x230 */
#endif
struct e820entry e820_map[E820MAX]; /* 0x2d0 */
/* 0x550 */
@@ -201,12 +204,15 @@ struct x86_linux_header {
uint32_t high_filesz; /* 0x254 */
uint32_t tail[32*1024 - 0x258]; /* 0x258 */
#else
- uint8_t tail[32*1024 - 0x230]; /* 0x230 */
+ uint32_t kernel_alignment; /* 0x230 */
+ uint8_t relocatable_kernel; /* 0x234 */
+ uint8_t tail[32*1024 - 0x235]; /* 0x230 */
#endif
} PACKED;
#endif /* ASSEMBLY */
#define DEFAULT_INITRD_ADDR_MAX 0x37FFFFFF
+#define DEFAULT_BZIMAGE_ADDR_MAX 0x37FFFFFF
#endif /* X86_LINUX_H */
--- kexec-tools-1.101/kexec/arch/i386/crashdump-x86.c.orig 2007-01-05 11:05:11.000000000 -0500
+++ kexec-tools-1.101/kexec/arch/i386/crashdump-x86.c 2007-01-05 11:05:30.000000000 -0500
@@ -680,7 +680,9 @@ int load_crashdump_segments(struct kexec
tmp = xmalloc(sz);
memset(tmp, 0, sz);
info->backup_start = add_buffer(info, tmp, sz, sz, align,
- 0, max_addr, 1);
+ 0, max_addr, -1);
+ dfprintf(stdout, "Created backup segment at 0x%lx\n",
+ info->backup_start);
if (delete_memmap(memmap_p, info->backup_start, sz) < 0)
return -1;
@@ -719,7 +721,8 @@ int load_crashdump_segments(struct kexec
* This is a makeshift solution until it is fixed in kernel.
*/
elfcorehdr = add_buffer(info, tmp, sz, 16*1024, align, min_base,
- max_addr, 1);
+ max_addr, -1);
+ dfprintf(stdout, "Created elf header segment at 0x%lx\n", elfcorehdr);
if (delete_memmap(memmap_p, elfcorehdr, sz) < 0)
return -1;
cmdline_add_memmap(mod_cmdline, memmap_p);
--- kexec-tools-1.101/kexec/arch/i386/x86-linux-setup.c.orig 2007-01-05 11:05:11.000000000 -0500
+++ kexec-tools-1.101/kexec/arch/i386/x86-linux-setup.c 2007-01-05 11:05:30.000000000 -0500
@@ -59,6 +59,7 @@ void setup_linux_bootloader_parameters(
initrd_addr_max = DEFAULT_INITRD_ADDR_MAX;
if (real_mode->protocol_version >= 0x0203) {
initrd_addr_max = real_mode->initrd_addr_max;
+ dfprintf(stdout, "initrd_addr_max is 0x%lx\n", initrd_addr_max);
}
/* Load the initrd if we have one */
@@ -66,6 +67,8 @@ void setup_linux_bootloader_parameters(
initrd_base = add_buffer(info,
initrd_buf, initrd_size, initrd_size,
4096, INITRD_BASE, initrd_addr_max, -1);
+ dfprintf(stdout, "Loaded initrd at 0x%lx size 0x%lx\n",
+ initrd_base, initrd_size);
} else {
initrd_base = 0;
initrd_size = 0;
--- kexec-tools-1.101/kexec/arch/i386/kexec-bzImage.c.orig 2007-01-05 11:05:11.000000000 -0500
+++ kexec-tools-1.101/kexec/arch/i386/kexec-bzImage.c 2007-01-05 11:07:04.000000000 -0500
@@ -34,8 +34,10 @@
#include <x86/x86-linux.h>
#include "../../kexec.h"
#include "../../kexec-elf.h"
+#include "../../kexec-syscall.h"
#include "kexec-x86.h"
#include "x86-linux-setup.h"
+#include "crashdump-x86.h"
#include <arch/options.h>
static const int probe_debug = 0;
@@ -109,6 +111,7 @@ int do_bzImage_load(struct kexec_info *i
unsigned long setup_base, setup_size;
struct entry32_regs regs32;
struct entry16_regs regs16;
+ char *modified_cmdline;
/*
* Find out about the file I am about to load.
@@ -128,6 +131,45 @@ int do_bzImage_load(struct kexec_info *i
return -1;
}
+ /* Can't use bzImage for crash dump purposes with real mode entry */
+ if((info->kexec_flags & KEXEC_ON_CRASH) && real_mode_entry) {
+ fprintf(stderr, "Can't use bzImage for crash dump purposes"
+ " with real mode entry\n");
+ return -1;
+ }
+
+ if((info->kexec_flags & KEXEC_ON_CRASH) && !relocatable_kernel) {
+ fprintf(stderr, "BzImage is not relocatable. Can't be used"
+ " as capture kernel.\n");
+ return -1;
+ }
+
+ /* Need to append some command line parameters internally in case of
+ * taking crash dumps.
+ */
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ modified_cmdline = xmalloc(COMMAND_LINE_SIZE);
+ memset((void *)modified_cmdline, 0, COMMAND_LINE_SIZE);
+ if (command_line) {
+ strncpy(modified_cmdline, command_line,
+ COMMAND_LINE_SIZE);
+ modified_cmdline[COMMAND_LINE_SIZE - 1] = '\0';
+ }
+
+ /* If panic kernel is being loaded, additional segments need
+ * to be created. load_crashdump_segments will take care of
+ * loading the segments as high in memory as possible, hence
+ * in turn as away as possible from kernel to avoid being
+ * stomped by the kernel.
+ */
+ if (load_crashdump_segments(info, modified_cmdline, -1, 0) < 0)
+ return -1;
+
+ /* Use new command line buffer */
+ command_line = modified_cmdline;
+ command_line_len = strlen(command_line) +1;
+ }
+
/* Load the trampoline. This must load at a higher address
* the the argument/parameter segment or the kernel will stomp
* it's gdt.
@@ -139,7 +181,16 @@ int do_bzImage_load(struct kexec_info *i
setup_size = kern16_size + command_line_len;
real_mode = xmalloc(setup_size);
memcpy(real_mode, kernel, kern16_size);
- if (real_mode->protocol_version >= 0x0200) {
+
+ if (info->kexec_flags & KEXEC_ON_CRASH) {
+ /* If using bzImage for capture kernel, then we will not be
+ * executing real mode code. setup segment can be loaded
+ * anywhere as we will be just reading command line.
+ */
+ setup_base = add_buffer(info, real_mode, setup_size, setup_size,
+ 16, 0x3000, -1, 1);
+ }
+ else if (real_mode->protocol_version >= 0x0200) {
/* Careful setup_base must be greater than 8K */
setup_base = add_buffer(info, real_mode, setup_size, setup_size,
16, 0x3000, 640*1024, -1);
--- kexec-tools-1.101/kexec/kexec.h.orig 2007-01-05 11:05:11.000000000 -0500
+++ kexec-tools-1.101/kexec/kexec.h 2007-01-05 11:05:30.000000000 -0500
@@ -197,4 +197,11 @@ int arch_compat_trampoline(struct kexec_
void arch_update_purgatory(struct kexec_info *info);
#define MAX_LINE 160
+
+#ifdef DEBUG
+#define dfprintf(args...) do {fprintf(args);} while(0)
+#else
+#define dfprintf(args...) do { } while(0)
+#endif
+
#endif /* KEXEC_H */
Reference in New Issue View Git Blame Copy Permalink