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Naveen N. Rao 5d6a03ebc8 powerpc/hw_breakpoint: Only disable hw breakpoint if cpu supports it 
We get the below warning if we try to use kexec on P9:
   kexec_core: Starting new kernel
   WARNING: CPU: 0 PID: 1223 at arch/powerpc/kernel/process.c:826 __set_breakpoint+0xb4/0x140
   [snip]
   NIP __set_breakpoint+0xb4/0x140
   LR  kexec_prepare_cpus_wait+0x58/0x150
   Call Trace:
     0xc0000000ee70fb20 (unreliable)
     0xc0000000ee70fb20
     default_machine_kexec+0x234/0x2c0
     machine_kexec+0x84/0x90
     kernel_kexec+0xd8/0xe0
     SyS_reboot+0x214/0x2c0
     system_call+0x58/0x6c

This happens since we are trying to clear hw breakpoint on POWER9,
though we don't have CPU_FTR_DAWR enabled. Guard __set_breakpoint()
within hw_breakpoint_disable() with ppc_breakpoint_available() to
address this.

Fixes: 9654153158d3 ("powerpc: Disable DAWR in the base POWER9 CPU features")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-04 21:54:02 +10:00
..
alpha
locking/xchg/alpha: Fix xchg() and cmpxchg() memory ordering bugs
2018-02-23 08:38:16 +01:00
arc
ARC fixes for 4.16-rc4
2018-03-01 14:32:23 -08:00
arm
ARM: SoC fixes for 4.16
2018-02-28 16:11:04 -08:00
arm64
ARM: SoC fixes for 4.16
2018-02-28 16:11:04 -08:00
blackfin
unify {de,}mangle_poll(), get rid of kernel-side POLL...
2018-02-11 14:37:22 -08:00
c6x
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
cris
bug.h: work around GCC PR82365 in BUG()
2018-02-21 15:35:43 -08:00
frv
unify {de,}mangle_poll(), get rid of kernel-side POLL...
2018-02-11 14:37:22 -08:00
h8300
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
hexagon
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
ia64
bug.h: work around GCC PR82365 in BUG()
2018-02-21 15:35:43 -08:00
m32r
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
m68k
bug.h: work around GCC PR82365 in BUG()
2018-02-21 15:35:43 -08:00
metag
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
microblaze
Microblaze patches for 4.16-rc1
2018-02-02 09:48:36 -08:00
mips
MIPS fixes for 4.16-rc3
2018-02-23 14:59:29 -08:00
mn10300
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
nios2
nios2 update for v4.16-rc1
2018-02-11 13:52:32 -08:00
openrisc
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
parisc
Merge branch 'parisc-4.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
2018-03-02 13:05:20 -08:00
powerpc
powerpc/hw_breakpoint: Only disable hw breakpoint if cpu supports it
2018-04-04 21:54:02 +10:00
riscv
riscv/barrier: Define __smp_{mb,rmb,wmb}
2018-02-26 08:44:50 -08:00
s390
KVM: s390: provide only a single function for setting the tod (fix SCK)
2018-02-20 20:51:28 +00:00
score
arch/score/kernel/setup.c: combine two seq_printf() calls into one call in show_cpuinfo()
2018-02-06 18:32:47 -08:00
sh
sh: fix build error for empty CONFIG_BUILTIN_DTB_SOURCE
2018-03-02 09:20:55 +09:00
sparc
bug.h: work around GCC PR82365 in BUG()
2018-02-21 15:35:43 -08:00
tile
The core framework has a handful of patches this time around, mostly due
2018-02-01 16:56:07 -08:00
um
mconsole_proc(): don't mess with file->f_pos
2018-02-09 19:28:01 -08:00
unicore32
lib: optimize cpumask_next_and()
2018-02-06 18:32:44 -08:00
x86
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-03-04 12:12:48 -08:00
xtensa
xtensa: support DMA buffers in high memory
2018-02-16 19:19:54 -08:00
.gitignore
…
Kconfig
Makefile: introduce CONFIG_CC_STACKPROTECTOR_AUTO
2018-02-06 18:32:44 -08:00