Simon Horman 6672f76a5a kdump/kexec: calculate note size at compile time ... Currently the size of the per-cpu region reserved to save crash notes is set by the per-architecture value MAX_NOTE_BYTES. Which in turn is currently set to 1024 on all supported architectures. While testing ia64 I recently discovered that this value is in fact too small. The particular setup I was using actually needs 1172 bytes. This lead to very tedious failure mode where the tail of one elf note would overwrite the head of another if they ended up being alocated sequentially by kmalloc, which was often the case. It seems to me that a far better approach is to caclculate the size that the area needs to be. This patch does just that. If a simpler stop-gap patch for ia64 to be squeezed into 2.6.21(.X) is needed then this should be as easy as making MAX_NOTE_BYTES larger in arch/asm-ia64/kexec.h. Perhaps 2048 would be a good choice. However, I think that the approach in this patch is a much more robust idea. Acked-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2007-05-08 11:15:07 -07:00
..
mach-bigsmp	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
mach-default	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
mach-es7000	[PATCH] i386: modpost apic related warning fixes	2007-05-02 19:27:08 +02:00
mach-generic	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
mach-numaq	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
mach-summit	[PATCH] x86: Log reason why TSC was marked unstable	2007-05-02 19:27:08 +02:00
mach-visws	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
mach-voyager	[PATCH] clockevents: i386 drivers	2007-02-16 08:13:59 -08:00
8253pit.h
a.out.h
acpi.h	ACPI: cleanup: make disable_acpi() valid w/o CONFIG_ACPI	2007-02-13 00:09:13 -05:00
agp.h	[AGPGART] Move [un]map_page_into_agp into asm/agp.h	2007-04-26 14:22:50 -04:00
alternative-asm.i	Remove all inclusions of <linux/config.h>	2006-10-04 03:38:54 -04:00
alternative.h	[PATCH] i386: Implement alternative_io for i386	2007-05-02 19:27:20 +02:00
apic.h	[PATCH] i386: safe_apic_wait_icr_idle - i386	2007-05-02 19:27:17 +02:00
apicdef.h
arch_hooks.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
atomic.h	[PATCH] Numerous fixes to kernel-doc info in source files.	2007-02-11 10:51:32 -08:00
auxvec.h
bitops.h	[PATCH] Numerous fixes to kernel-doc info in source files.	2007-02-11 10:51:32 -08:00
boot.h	[PATCH] i386: Restore CONFIG_PHYSICAL_START option	2007-01-05 23:55:23 -08:00
bug.h	[PATCH] Generic BUG for i386	2006-12-08 08:28:39 -08:00
bugs.h	[PATCH] x86: update for i386 and x86-64 check_bugs	2007-05-02 19:27:16 +02:00
byteorder.h
cache.h
cacheflush.h	[PATCH] Optimize D-cache alias handling on fork	2006-12-13 09:27:08 -08:00
checksum.h	[NET]: I386 checksum annotations and cleanups.	2006-12-02 21:23:19 -08:00
cpu.h	[PATCH] i386: introduce the mechanism of disabling cpu hotplug control	2006-12-07 02:14:10 +01:00
cpufeature.h	[PATCH] i386: Add X86_FEATURE_RDTSCP	2007-05-02 19:27:20 +02:00
cputime.h
current.h	[PATCH] i386: Convert PDA into the percpu section	2007-05-02 19:27:16 +02:00
debugreg.h
delay.h	[PATCH] vmi: paravirt drop udelay op	2007-03-05 07:57:52 -08:00
desc.h	[PATCH] i386: Page-align the GDT	2007-05-02 19:27:15 +02:00
device.h	ACPI: Change ACPI to use dev_archdata instead of firmware_data	2006-12-01 14:52:01 -08:00
div64.h	[NET]: div64_64 consolidate (rev3)	2007-04-25 22:23:33 -07:00
dma-mapping.h	[PATCH] Pass struct dev pointer to dma_cache_sync()	2006-12-07 08:39:41 -08:00
dma.h
dmi.h
dwarf2.h	[PATCH] i386/x86-64: Work around gcc bug with noreturn functions in unwinder	2006-09-26 10:52:41 +02:00
e820.h	[PATCH] x86: fix amd64-agp aperture validation	2007-05-02 19:27:11 +02:00
edac.h
elf.h	[PATCH] i386: Relocate VDSO ELF headers to match mapped location with COMPAT_VDSO	2007-05-02 19:27:12 +02:00
emergency-restart.h
errno.h
fcntl.h
fixmap.h	[PATCH] i386: PARAVIRT: Allocate a fixmap slot	2007-05-02 19:27:13 +02:00
floppy.h	IRQ: Maintain regs pointer globally rather than passing to IRQ handlers	2006-10-05 15:10:12 +01:00
frame.i	Remove all inclusions of <linux/config.h>	2006-10-04 03:38:54 -04:00
futex.h	[PATCH] mm: pagefault_{disable,enable}()	2006-12-07 08:39:21 -08:00
genapic.h	[PATCH] x86: default to physical mode on hotplug CPU kernels	2007-05-02 19:27:04 +02:00
hardirq.h
highmem.h	[PATCH] i386: PARAVIRT: add kmap_atomic_pte for mapping highpte pages	2007-05-02 19:27:15 +02:00
hpet.h	[PATCH] x86: adjust inclusion of asm/fixmap.h	2007-05-02 19:27:04 +02:00
hw_irq.h	[PATCH] i386/x86_64: Remove global IO_APIC_VECTOR	2006-10-08 12:24:02 -07:00
hypertransport.h	[PATCH] Initial generic hypertransport interrupt support	2006-10-04 07:55:29 -07:00
i387.h	[PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu	2007-05-02 19:27:21 +02:00
i8253.h	[PATCH] clockevents: i386 drivers	2007-02-16 08:13:59 -08:00
i8259.h
ide.h	[PATCH] ide: more conversion to pci_get APIs	2006-12-08 08:29:03 -08:00
intel_arch_perfmon.h
io.h	[PATCH] i386: rationalize paravirt wrappers	2007-05-02 19:27:10 +02:00
io_apic.h	[PATCH] io_apic.h needs apicdef.h	2007-03-05 07:57:50 -08:00
ioctl.h
ioctls.h	tty: i386/x86_64 arbitary speed support	2007-05-08 11:15:03 -07:00
ipc.h
ipcbuf.h
irq.h	[PATCH] x86: revert x86_64-mm-fix-the-irqbalance-quirk-for-e7320-e7520-e7525	2007-05-02 19:27:04 +02:00
irq_regs.h	[PATCH] i386: Convert PDA into the percpu section	2007-05-02 19:27:16 +02:00
irqflags.h	[PATCH] i386: Use X86_EFLAGS_IF in irqflags.h.	2007-05-02 19:27:10 +02:00
ist.h
k8.h
Kbuild	[PATCH] x86: Clean up x86 control register and MSR macros (corrected)	2007-05-02 19:27:12 +02:00
kdebug.h	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
kexec.h	kdump/kexec: calculate note size at compile time	2007-05-08 11:15:07 -07:00
kmap_types.h
kprobes.h
ldt.h
linkage.h
local.h
math_emu.h	[PATCH] i386: PDA: Fix math emulator for new pt_regs	2006-12-07 02:14:03 +01:00
mc146818rtc.h
mca.h
mca_dma.h	[PATCH] kernel-doc for kernel/dma.c	2006-10-03 08:03:41 -07:00
mce.h	[PATCH] i386: Move mce_disabled to asm/mce.h	2007-02-13 13:26:26 +01:00
mman.h
mmu.h
mmu_context.h	[PATCH] x86: PARAVIRT: add hooks to intercept mm creation and destruction	2007-05-02 19:27:14 +02:00
mmx.h
mmzone.h	[PATCH] silence unused pgdat warning from alloc_bootmem_node and friends	2006-12-07 08:39:23 -08:00
module.h	[PATCH] i386: Add an option for the VIA C7 which sets appropriate L1 cache	2007-05-02 19:27:05 +02:00
mpspec.h	[PATCH] clockevents: i386 drivers	2007-02-16 08:13:59 -08:00
mpspec_def.h	[PATCH] x86-64: remove remaining pc98 code	2006-12-07 02:14:19 +01:00
msgbuf.h
msidef.h	[PATCH] genirq: i386 irq: Move msi message composition into io_apic.c	2006-10-04 07:55:28 -07:00
msr-index.h	[PATCH] i386: Enable support for fixed-range IORRs to keep RdMem & WrMem in sync	2007-05-02 19:27:17 +02:00
msr.h	[PATCH] x86: Clean up x86 control register and MSR macros (corrected)	2007-05-02 19:27:12 +02:00
mtrr.h	[PATCH] x86: Save the MTRRs of the BSP before booting an AP	2007-05-02 19:27:17 +02:00
mutex.h
namei.h
nmi.h	[PATCH] i386: Clean up NMI watchdog code	2007-05-02 19:27:20 +02:00
numa.h
numaq.h
page.h	[PATCH] i386: PARAVIRT: Add pagetable accessors to pack and unpack pagetable entries	2007-05-02 19:27:13 +02:00
param.h	[PATCH] cleanup asm/setup.h userspace visibility	2006-12-07 08:39:46 -08:00
paravirt.h	[PATCH] i386: PARAVIRT: drop unused ptep_get_and_clear	2007-05-02 19:27:15 +02:00
parport.h
pci-direct.h
pci.h
percpu.h	[PATCH] i386: Define per_cpu_offset	2007-05-02 19:27:16 +02:00
pgalloc.h	[PATCH] x86: adjust inclusion of asm/fixmap.h	2007-05-02 19:27:04 +02:00
pgtable-2level-defs.h	[PATCH] i386: PARAVIRT: Allow paravirt backend to choose kernel PMD sharing	2007-05-02 19:27:13 +02:00
pgtable-2level.h	[PATCH] i386: pte simplify ops	2007-05-02 19:27:19 +02:00
pgtable-3level-defs.h	[PATCH] i386: PARAVIRT: Allow paravirt backend to choose kernel PMD sharing	2007-05-02 19:27:13 +02:00
pgtable-3level.h	[PATCH] i386: pte simplify ops	2007-05-02 19:27:19 +02:00
pgtable.h	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
poll.h
posix_types.h
processor-flags.h	[PATCH] x86: Clean up x86 control register and MSR macros (corrected)	2007-05-02 19:27:12 +02:00
processor.h	[PATCH] i386: Fix UP gdt bugs	2007-05-02 19:27:16 +02:00
ptrace-abi.h	[PATCH] Split i386 and x86_64 ptrace.h	2006-09-26 08:49:10 -07:00
ptrace.h	[PATCH] i386: Profile pc badness	2007-02-13 13:26:21 +01:00
reboot.h	[PATCH] i386: Add machine_ops interface to abstract halting and rebooting	2007-05-02 19:27:11 +02:00
reboot_fixups.h	[PATCH] i386: clean up mach_reboot_fixups	2007-05-02 19:27:06 +02:00
required-features.h	[PATCH] i386: Verify important CPUID bits in real mode	2007-05-02 19:27:20 +02:00
resource.h
rtc.h
rwlock.h
rwsem.h	[PATCH] lockdep: name some old style locks	2006-12-07 08:39:36 -08:00
scatterlist.h	PCI: scatterlist.h needs types.h	2007-05-02 19:02:34 -07:00
seccomp.h
sections.h
segment.h	[PATCH] i386: Fix UP gdt bugs	2007-05-02 19:27:16 +02:00
semaphore.h	[PATCH] i386: Use early clobbers for semaphores now	2006-09-27 14:39:51 -07:00
sembuf.h
serial.h
setup.h	[PATCH] i386: Remove extern declaration from mm/discontig.c, put in header.	2007-02-13 13:26:26 +01:00
shmbuf.h
shmparam.h
sigcontext.h
siginfo.h
signal.h
smp.h	[PATCH] i386: Convert PDA into the percpu section	2007-05-02 19:27:16 +02:00
socket.h	[NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support	2007-04-25 22:24:21 -07:00
sockios.h	[NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution	2007-04-25 22:24:04 -07:00
sparsemem.h
spinlock.h	[PATCH] paravirt: Patch inline replacements for paravirt intercepts	2006-12-07 02:14:08 +01:00
spinlock_types.h	[PATCH] Remove 'volatile' from spinlock_types	2006-12-06 14:39:53 -08:00
srat.h
stacktrace.h
stat.h
statfs.h
string.h
suspend.h	Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6	2006-12-07 08:59:11 -08:00
sync_bitops.h	[PATCH] i386: fix typo in sync_constant_test_bit()'s name	2007-03-16 19:25:07 -07:00
system.h	[PATCH] i386: rationalize paravirt wrappers	2007-05-02 19:27:10 +02:00
termbits.h	tty: i386/x86_64 arbitary speed support	2007-05-08 11:15:03 -07:00
termios.h	tty: i386/x86_64 arbitary speed support	2007-05-08 11:15:03 -07:00
therm_throt.h	[PATCH] x86: Add a cumulative thermal throttle event counter.	2006-09-26 10:52:42 +02:00
thread_info.h	i386: use page allocator to allocate thread_info structure	2007-05-07 12:12:53 -07:00
time.h	[PATCH] vmi: pit override	2007-03-05 07:57:52 -08:00
timer.h	[PATCH] i386: pit_latch_buggy has no effect	2007-05-02 19:27:05 +02:00
timex.h
tlb.h
tlbflush.h	[PATCH] i386: PARAVIRT: add flush_tlb_others paravirt_op	2007-05-02 19:27:15 +02:00
topology.h	[PATCH] sched: remove SMT nice	2007-03-05 07:57:51 -08:00
tsc.h	[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible	2007-05-02 19:27:21 +02:00
types.h	[PATCH] Centralise definitions of sector_t and blkcnt_t	2006-12-04 19:41:15 -08:00
uaccess.h	[PATCH] i386: Update __copy_to_user_inatomic linuxdoc description	2007-05-02 19:27:06 +02:00
ucontext.h
unaligned.h
unistd.h	[PATCH] remove kernel syscalls	2006-12-07 08:39:37 -08:00
unwind.h	Remove stack unwinder for now	2006-12-15 08:47:51 -08:00
user.h
vga.h
vic.h	[VOYAGER] fix up ptregs removal mess	2006-10-12 22:25:03 -05:00
vm86.h	[PATCH] i386: Update sys_vm86 to cope with changed pt_regs and %gs usage	2006-12-07 02:14:03 +01:00
vmi.h	[PATCH] vmi: apic ops	2007-03-05 07:57:52 -08:00
vmi_time.h	[PATCH] i386: Convert VMI timer to use clock events	2007-05-02 19:27:16 +02:00
voyager.h	[VOYAGER] Convert the monitor thread to use the kthread API	2007-05-01 10:09:29 -05:00
xor.h