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linux/arch/mips/kernel
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Matt Redfearn 405bc8fd12 MIPS: Kernel: Implement KASLR using CONFIG_RELOCATABLE 
This patch adds KASLR to the MIPS kernel.

Entropy is derived from the banner, which will change every build and
random_get_entropy() which should provide additional runtime entropy.
Additionally the bootloader may pass entropy via the /chosen/kaslr-seed
node in device tree.

The kernel is relocated by up to RANDOMIZE_BASE_MAX_OFFSET bytes from
its link address (PHYSICAL_START). Because relocation happens so early
in the kernel boot, the amount of physical memory has not yet been
determined. This means the only way to limit relocation within the
available memory is via Kconfig.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: kernel-hardening@lists.openwall.com
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12990/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:02:03 +02:00
..
.gitignore
…
8250-platform.c
…
asm-offsets.c
MIPS: Set trap_no field in thread_struct on exception.
2015-09-03 12:08:04 +02:00
binfmt_elfn32.c
mips: Differentiate between 32 and 64 bit ELF header
2016-02-11 11:38:22 +01:00
binfmt_elfo32.c
mips: Differentiate between 32 and 64 bit ELF header
2016-02-11 11:38:22 +01:00
bmips_5xxx_init.S
MIPS: BMIPS: Make whitespacely correct.
2016-05-09 12:00:01 +02:00
bmips_vec.S
MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code
2016-05-09 12:00:01 +02:00
branch.c
MIPS: Fix branch emulation for BLTC and BGEC instructions
2015-07-09 11:10:40 +02:00
cevt-bcm1480.c
MIPS: cevt-bcm1480: Migrate to new 'set-state' interface
2015-09-03 12:07:51 +02:00
cevt-ds1287.c
MIPS: cevt-ds1287: Migrate to new 'set-state' interface
2015-09-03 12:07:51 +02:00
cevt-gt641xx.c
MIPS: cevt-gt641xx: Migrate to new 'set-state' interface
2015-09-03 12:07:51 +02:00
cevt-r4k.c
MIPS: cevt-r4k: Migrate to new 'set-state' interface
2015-09-03 12:07:52 +02:00
cevt-sb1250.c
MIPS: cevt-sb1250: Migrate to new 'set-state' interface
2015-09-03 12:07:52 +02:00
cevt-txx9.c
MIPS: cevt-txx9: Migrate to new 'set-state' interface
2015-09-03 12:07:53 +02:00
cps-vec-ns16550.S
MIPS: CPS: Early debug using an ns16550-compatible UART
2015-11-11 08:34:25 +01:00
cps-vec.S
MIPS: smp-cps: Stop printing EJTAG exceptions to UART
2016-05-13 14:01:51 +02:00
cpu-bugs64.c
MIPS: Use EXCCODE_ constants with set_except_vector()
2016-01-24 03:28:21 +01:00
cpu-probe.c
MIPS: Detect DSP v3 support
2016-05-13 14:01:57 +02:00
crash_dump.c
mips: Convert pr_warning to pr_warn
2014-11-24 07:44:51 +01:00
crash.c
MIPS: Fix crash registers on non-crashing CPUs
2016-05-09 12:00:00 +02:00
csrc-bcm1480.c
MIPS: csrc-bcm1480: Implement read_sched_clock
2015-04-01 17:21:27 +02:00
csrc-ioasic.c
MIPS: csrc-ioasic: Implement read_sched_clock
2015-04-01 17:21:28 +02:00
csrc-r4k.c
MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()
2015-11-11 08:36:41 +01:00
csrc-sb1250.c
MIPS: csrc-sb1250: Implement read_sched_clock
2015-04-01 17:21:33 +02:00
early_printk_8250.c
MIPS: Add 8250/16550 serial early printk driver
2013-10-29 21:24:36 +01:00
early_printk.c
early_printk: consolidate random copies of identical code
2013-04-29 18:28:13 -07:00
elf.c
MIPS: Add IEEE Std 754 conformance mode selection
2016-01-20 00:39:20 +01:00
entry.S
MIPS: kernel: entry.S: Set correct ISA level for mips_ihb
2015-04-10 15:41:46 +02:00
ftrace.c
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
2014-08-07 08:47:00 -07:00
genex.S
MIPS: Fix LLVM build issue.
2015-08-18 11:40:20 +02:00
gpio_txx9.c
MIPS: txx9: switch to gpiochip_add_data()
2016-02-19 09:51:44 +01:00
head.S
MIPS: Call relocate_kernel if CONFIG_RELOCATABLE=y
2016-05-13 14:02:03 +02:00
i8253.c
…
idle.c
Merge branch '4.3-fixes' into mips-for-linux-next
2015-11-12 11:36:03 +01:00
irq_txx9.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-gt641xx.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq-msc01.c
MIPS: MSC: Prevent out-of-bounds writes to MIPS SC ioremap'd region
2014-06-26 10:48:23 +01:00
irq-rm7000.c
MIPS: Whitespace cleanup.
2013-02-01 10:00:22 +01:00
irq.c
MIPS: IRQ/IP27: Move IRQ allocation API to platform code.
2015-06-21 21:54:31 +02:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kgdb.c
MIPS: Get rid of 'kgdb_early_setup' cruft.
2015-06-21 21:54:10 +02:00
kprobes.c
mips: Replace __get_cpu_var uses
2014-08-26 13:45:51 -04:00
linux32.c
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
2013-05-09 13:46:38 -04:00
machine_kexec.c
MIPS: kdump: Set correct value to kexec_indirection_page variable
2014-08-25 16:33:44 +02:00
Makefile
MIPS: Kernel: Add relocate.c
2016-05-13 14:02:02 +02:00
mcount.S
MIPS: mcount: Adjust stack pointer for static trace in MIPS32
2014-09-26 11:41:17 +02:00
mips_ksyms.c
MIPS: uaccess: Take EVA into account in [__]clear_user
2015-12-22 11:58:43 +01:00
mips_machine.c
MIPS: move mips_{set,get}_machine_name() to a more generic place
2013-05-08 01:19:07 +02:00
mips-cm.c
MIPS: Fix misspellings in comments.
2016-04-03 12:32:09 +02:00
mips-cpc.c
MIPS: CM, CPC: Ensure core-other GCRs reflect the correct core
2015-11-11 08:35:18 +01:00
mips-mt-fpaff.c
MIPS: Fix sched_getaffinity with MT FPAFF enabled
2015-08-03 09:25:02 +02:00
mips-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
mips-r2-to-r6-emul.c
MIPS64: R6: R2 emulation bugfix
2016-05-09 12:00:04 +02:00
module-rela.c
MIPS: Support R_MIPS_PC{21,26} rela-style relocs
2016-05-13 14:01:54 +02:00
module.c
MIPS: Support R_MIPS_PC{16,21,26} rel-style relocs
2016-05-13 14:01:54 +02:00
octeon_switch.S
MIPS: Fix octeon FP context switch handling
2015-10-02 19:16:06 +02:00
perf_event_mipsxx.c
MIPS: Add P6600 cases to CPU switch statements
2016-05-13 14:01:52 +02:00
perf_event.c
…
pm-cps.c
MIPS: pm-cps: Avoid offset overflow on MIPSr6
2016-05-13 14:01:48 +02:00
pm.c
MIPS: Fix watchpoint restoration
2016-05-09 12:00:02 +02:00
proc.c
MIPS: Detect DSP v3 support
2016-05-13 14:01:57 +02:00
process.c
MIPS: Make flush_thread
2016-05-13 14:01:54 +02:00
prom.c
MIPS: Fix build with CONFIG_OF=y for non OF-enabled targets
2015-08-03 09:25:00 +02:00
ptrace32.c
MIPS: Remove asm/user.h
2014-08-02 00:06:37 +02:00
ptrace.c
MIPS: ptrace: Drop cp0_tcstatus from regoffset_table[]
2016-01-24 02:24:24 +01:00
r4k_fpu.S
MIPS: Use copy_s.fmt rather than copy_u.fmt
2016-05-09 12:00:04 +02:00
r4k_switch.S
MIPS: Tidy up FPU context switching
2015-09-03 12:08:05 +02:00
r2300_fpu.S
MIPS: Avoid variant of .type unsupported by LLVM Assembler
2016-02-29 11:23:49 +01:00
r2300_switch.S
MIPS: Fix R2300 FP context switch handling
2015-10-02 19:16:46 +02:00
r6000_fpu.S
MIPS: Fix build with binutils 2.24.51+
2014-11-07 15:07:36 +01:00
relocate_kernel.S
MIPS: Replace add and sub instructions in relocate_kernel.S with addiu
2015-08-03 15:26:30 +02:00
relocate.c
MIPS: Kernel: Implement KASLR using CONFIG_RELOCATABLE
2016-05-13 14:02:03 +02:00
reset.c
MIPS: Provide fallback reboot/poweroff/halt implementations
2015-04-01 17:21:58 +02:00
rtlx-cmp.c
MIPS: APRP: Fix an issue when device_create() fails.
2014-08-01 17:30:35 +02:00
rtlx-mt.c
MIPS: APRP: Fix an issue when device_create() fails.
2014-08-01 17:30:35 +02:00
rtlx.c
MIPS: rtlx: Remove KERN_DEBUG from pr_debug() arguments in rtlx.c
2014-11-24 07:44:04 +01:00
scall32-o32.S
MIPS: scall: Handle seccomp filters which redirect syscalls
2016-05-13 14:02:00 +02:00
scall64-64.S
MIPS: scall: Handle seccomp filters which redirect syscalls
2016-05-13 14:02:00 +02:00
scall64-n32.S
MIPS: scall: Handle seccomp filters which redirect syscalls
2016-05-13 14:02:00 +02:00
scall64-o32.S
MIPS: scall: Handle seccomp filters which redirect syscalls
2016-05-13 14:02:00 +02:00
segment.c
MIPS: Declare mips_debugfs_dir in a header
2015-10-26 09:49:42 +01:00
setup.c
MIPS: bootmem: When relocatable, free memory below kernel
2016-05-13 14:02:03 +02:00
signal32.c
MIPS: Support sending SIG_SYS to 32bit userspace from 64bit kernel
2016-05-13 14:02:00 +02:00
signal_n32.c
MIPS: Initial implementation of a VDSO
2015-11-11 08:36:36 +01:00
signal-common.h
MIPS: Save MSA extended context around signals
2015-09-03 12:07:59 +02:00
signal.c
MIPS: Initial implementation of a VDSO
2015-11-11 08:36:36 +01:00
smp-bmips.c
MIPS: BMIPS: Add early CPU initialization code
2016-05-13 14:01:55 +02:00
smp-cmp.c
MIPS: Make smp CMP, CPS and MT use the new generic IPI functions
2016-02-25 10:56:58 +01:00
smp-cps.c
MIPS: smp-cps: Add nothreads kernel parameter
2016-05-13 14:01:50 +02:00
smp-gic.c
MIPS: CM: make use of mips_cm_{lock,unlock}_other
2015-11-11 08:35:17 +01:00
smp-mt.c
MIPS: Make smp CMP, CPS and MT use the new generic IPI functions
2016-02-25 10:56:58 +01:00
smp-up.c
MIPS: SMP: Remove plat_smp_ops cpus_done method.
2014-05-27 11:06:42 +02:00
smp.c
MIPS: Don't BUG_ON when no IPI domain is found
2016-05-09 12:00:00 +02:00
spinlock_test.c
MIPS: Declare mips_debugfs_dir in a header
2015-10-26 09:49:42 +01:00
spram.c
MIPS: Add P6600 cases to CPU switch statements
2016-05-13 14:01:52 +02:00
stacktrace.c
MIPS: Add LATENCYTOP support
2015-11-11 08:36:46 +01:00
sync-r4k.c
MIPS: sync-r4k: reduce skew while synchronization
2016-01-24 01:31:51 +01:00
syscall.c
MIPS: kernel: syscall: Set the appropriate ISA level for MIPS R6
2015-02-17 15:37:29 +00:00
sysrq.c
MIPS: Refactor dumping of TLB registers for r3k/r4k
2015-09-03 12:07:45 +02:00
time.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
topology.c
…
traps.c
MIPS: Add P6600 cases to CPU switch statements
2016-05-13 14:01:52 +02:00
unaligned.c
MIPS: Fix MSA ld unaligned failure cases
2016-03-29 14:18:18 +02:00
uprobes.c
MIPS: Add uprobes support.
2015-09-03 12:08:05 +02:00
vdso.c
MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()
2015-11-11 08:36:41 +01:00
vmlinux.lds.S
MIPS: Reserve space for relocation table
2016-05-13 14:02:02 +02:00
vpe-cmp.c
MIPS: APRP: Add VPE loader support for CMP platforms.
2014-01-22 20:19:02 +01:00
vpe-mt.c
MIPS: MT: Remove SMTC support
2014-05-24 00:07:01 +02:00
vpe.c
module: use a structure to encapsulate layout.
2015-12-04 22:46:25 +01:00
watch.c
MIPS: Fix watchpoint restoration
2016-05-09 12:00:02 +02:00