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4545c89880
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Jiri Kosina 4545c89880 x86: introduce kaslr_offset() 
Offset that has been chosen for kaslr during kernel decompression can be
easily computed as a difference between _text and __START_KERNEL. We are
already making use of this in dump_kernel_offset() notifier and in
arch_crash_save_vmcoreinfo().

Introduce kaslr_offset() that makes this computation instead of hard-coding
it, so that other kernel code (such as live patching) can make use of it.
Also convert existing users to make use of it.

This patch is equivalent transofrmation without any effects on the resulting
code:

	$ diff -u vmlinux.old.asm vmlinux.new.asm
	--- vmlinux.old.asm     2015-04-28 17:55:19.520983368 +0200
	+++ vmlinux.new.asm     2015-04-28 17:55:24.141206072 +0200
	@@ -1,5 +1,5 @@

	-vmlinux.old:     file format elf64-x86-64
	+vmlinux.new:     file format elf64-x86-64

	Disassembly of section .text:
	$

Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-04-29 16:51:33 +02:00
..
alpha PCI changes for the v4.1 merge window: 2015-04-13 15:45:47 -07:00
arc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
arm USB patches for 4.1-rc1 2015-04-13 17:07:21 -07:00
arm64 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-13 11:08:28 -07:00
avr32 avr32: fix integer overflow in ELF_ET_DYN_BASE 2015-04-13 18:48:55 +02:00
blackfin Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-02-21 12:59:04 -08:00
c6x arch/c6x/include/asm/pgtable.h: define dummy pgprot_writecombine for !MMU 2015-03-12 18:46:08 -07:00
cris CRIS changes for 3.20 2015-02-15 18:02:02 -08:00
frv Merge branches 'pci/enumeration' and 'pci/virtualization' into next 2015-03-23 17:17:34 -05:00
hexagon
ia64 PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) 2015-03-19 10:17:13 -05:00
m32r mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines 2015-02-28 09:57:51 -08:00
m68k PCI changes for the v4.1 merge window: 2015-04-13 15:45:47 -07:00
metag metag: Fix ioremap_wc/ioremap_cached build errors 2015-03-23 12:32:37 +00:00
microblaze Merge branches 'pci/enumeration' and 'pci/virtualization' into next 2015-03-23 17:17:34 -05:00
mips Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-13 15:54:50 -07:00
mn10300 Merge branches 'pci/enumeration' and 'pci/virtualization' into next 2015-03-23 17:17:34 -05:00
nios2 nios2: fix cache coherency issue when debug with gdb 2015-04-10 11:10:08 +08:00
openrisc asm-generic: uaccess.h cleanup 2015-02-18 10:02:24 -08:00
parisc parisc: Fix pmd code to depend on PT_NLEVELS value, not on CONFIG_64BIT 2015-03-23 12:28:16 +01:00
powerpc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching 2015-04-14 10:15:34 -07:00
score
sh PCI: Cleanup control flow 2015-03-19 10:17:22 -05:00
sparc PCI changes for the v4.1 merge window: 2015-04-13 15:45:47 -07:00
tile PCI changes for the v4.1 merge window: 2015-04-13 15:45:47 -07:00
um
unicore32 PCI: Assign resources before drivers claim devices (pci_scan_bus()) 2015-03-12 15:04:01 -05:00
x86 x86: introduce kaslr_offset() 2015-04-29 16:51:33 +02:00
xtensa PCI: Assign resources before drivers claim devices (pci_scan_root_bus()) 2015-03-19 10:17:13 -05:00
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