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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-14 07:43:11 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-14 07:43:11 -0700 |
| commit | a2c7a54fcc36dc3d0d461e883d9535f8f52f5a3f (patch) | |
| tree | 3bc7e727e6ebe67d7099b01a1b3cc159840912ca /arch/powerpc/kernel/machine_kexec_64.c | |
| parent | 674825d05001e218afe5a04438683e1e597e14fb (diff) | |
| parent | e34166ad63eac4d0fa98b4c4ed7a98202a18faef (diff) | |
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc fixes from Benjamin Herrenschmidt:
"This is mostly bug fixes (some of them regressions, some of them I
deemed worth merging now) along with some patches from Li Zhong
hooking up the new context tracking stuff (for the new full NO_HZ)"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits)
powerpc: Set show_unhandled_signals to 1 by default
powerpc/perf: Fix setting of "to" addresses for BHRB
powerpc/pmu: Fix order of interpreting BHRB target entries
powerpc/perf: Move BHRB code into CONFIG_PPC64 region
powerpc: select HAVE_CONTEXT_TRACKING for pSeries
powerpc: Use the new schedule_user API on userspace preemption
powerpc: Exit user context on notify resume
powerpc: Exception hooks for context tracking subsystem
powerpc: Syscall hooks for context tracking subsystem
powerpc/booke64: Fix kernel hangs at kernel_dbg_exc
powerpc: Fix irq_set_affinity() return values
powerpc: Provide __bswapdi2
powerpc/powernv: Fix starting of secondary CPUs on OPALv2 and v3
powerpc/powernv: Detect OPAL v3 API version
powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning again
powerpc: Make CONFIG_RTAS_PROC depend on CONFIG_PROC_FS
powerpc: Bring all threads online prior to migration/hibernation
powerpc/rtas_flash: Fix validate_flash buffer overflow issue
powerpc/kexec: Fix kexec when using VMX optimised memcpy
powerpc: Fix build errors STRICT_MM_TYPECHECKS
...
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec_64.c')
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec_64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index 466a2908bb63..611acdf30096 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -17,6 +17,7 @@ #include <linux/errno.h> #include <linux/kernel.h> #include <linux/cpu.h> +#include <linux/hardirq.h> #include <asm/page.h> #include <asm/current.h> @@ -335,10 +336,13 @@ void default_machine_kexec(struct kimage *image) pr_debug("kexec: Starting switchover sequence.\n"); /* switch to a staticly allocated stack. Based on irq stack code. + * We setup preempt_count to avoid using VMX in memcpy. * XXX: the task struct will likely be invalid once we do the copy! */ kexec_stack.thread_info.task = current_thread_info()->task; kexec_stack.thread_info.flags = 0; + kexec_stack.thread_info.preempt_count = HARDIRQ_OFFSET; + kexec_stack.thread_info.cpu = current_thread_info()->cpu; /* We need a static PACA, too; copy this CPU's PACA over and switch to * it. Also poison per_cpu_offset to catch anyone using non-static |