Michael Ellerman a87e810f61 powerpc: Work around gcc bug in current_thread_info() ... In commit a3e5b356b3 "powerpc: Don't use local named register variable in current_thread_info" Anton changed the way we did current_thread_info() to accommodate LLVM, and it was not meant to have any effect elsewhere. Unfortunately it has exposed a gcc bug, where r1 gets copied into another register and then gcc uses that register to restore the toc after a function call, even when that register is volatile and has been clobbered by the function call. We could revert Anton's patch, but it's not clear the original code is safe either, we may just have been lucky. The cleanest solution is to just use the existing CURRENT_THREAD_INFO() asm macro, and call it using inline asm. Segher points out we don't need volatile on the asm, if the result of the shift is unused it's fine for the compiler to elide it. Fixes: a3e5b356b3 ("powerpc: Don't use local named register variable in current_thread_info") Reported-by: Alexander Graf <agraf@suse.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2015-01-12 16:40:02 +11:00
..
boot	Merge remote-tracking branch 'scottwood/next' into next	2014-11-18 17:00:38 +11:00
configs	PM: Eliminate CONFIG_PM_RUNTIME	2014-12-19 22:55:06 +01:00
crypto	crypto: powerpc - replace memset by memzero_explicit	2014-12-02 22:55:50 +08:00
include	powerpc: Work around gcc bug in current_thread_info()	2015-01-12 16:40:02 +11:00
kernel	Revert "powerpc: Secondary CPUs must set cpu_callin_map after setting active and online"	2014-12-29 15:51:51 +11:00
kvm	3.19 changes for KVM:	2014-12-18 16:05:28 -08:00
lib	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2014-12-12 10:08:06 -08:00
math-emu
mm	mm/debug-pagealloc: make debug-pagealloc boottime configurable	2014-12-13 12:42:48 -08:00
net	PPC: bpf_jit_comp: Unify BPF_MOD | BPF_X and BPF_DIV | BPF_X	2014-11-18 13:20:09 -05:00
oprofile	powerpc updates for 3.19	2014-12-11 17:48:14 -08:00
perf	power/perf/hv-24x7: Use kmem_cache_free() instead of kfree	2014-12-12 16:06:13 +11:00
platforms	powernv: Fix OPAL tracepoint code	2015-01-12 16:40:02 +11:00
sysdev	Driver core patches for 3.19-rc1	2014-12-14 16:10:09 -08:00
xmon	powerpc updates for 3.19	2014-12-11 17:48:14 -08:00
Kconfig	gcov: enable GCOV_PROFILE_ALL from ARCH Kconfigs	2014-12-13 12:42:51 -08:00
Kconfig.debug	Patch queue for ppc - 2014-08-01	2014-08-05 09:58:11 +02:00
Makefile	powerpc: Add POWER8 CPU selection	2014-09-25 23:14:49 +10:00
relocs_check.pl