Hi,
at
git://git.xenomai.org/ipipe-jki for-upstream/3.5
I've lined up our current x86 queue for I-pipe core-3.5. We are not yet
fully done with testing, I'd specifically like to give x86-32 a final
kick, so this is just a heads-up. The queue got a bit long:
Jan Kiszka (23):
ipipe: Rework and simplify __ipipe_pin_vma
ipipe: Fault in locked vmas after changing the protection flags
# critical fix for zero-page corruption after mprotect,
# actually affecting all mmu-archs
x86/ipipe: Fix registration of IRQ work vector
ipipe: Add root domain guard to preempt_schedule
ipipe: Make context in add/sub_preempt_count conditional
ipipe: Harden clocks used by ftrace and perf
ipipe: Harden ftrace function and function-graph tracer
ipipe: Harden trace_vbprintk for non-root use
x86/ipipe: Prevent copy_from_user_nmi over non-root domains
x86/ipipe: x86_64 provides context-agnostic current_thread_info
# ftrace and perf support, tested on x86-64 only,
# some bits may work on other archs too
# Note: I didn't follow the ipipe_safe_preempt_* path but rather disable
# preempt_count instrumentation selectively now. I think this is more
# appropriate given that the issue is only legacy related.
x86/ipipe: Disallow transparent huge pages when I-pipe is active
# if you copy a distro .config, this can bite you... (we need to account for
THP later)
ipipe: Allow raw_spin_is_locked for I-pipe spin locks
ipipe: Provide hardened probe_kernel_read/write for kgdb-over-I-pipe
x86/ipipe: Implement arch-specific probe_kernel_read/write support
x86/ipipe: Call kgdb_handle_exception over any domain in
__ipipe_divert_exception
x86/ipipe: Drop kgdb exception hook from from __ipipe_handle_exception
ipipe: Harden generic part of kgdb for I-pipe use
x86/ipipe: Harden kgdb for I-pipe use
x86/ipipe: Fix kgdb hook invocation from __ipipe_divert_exception
# kgdb for x86 (tested on -64 only), may lay the ground for other archs too
x86/ipipe: Add missing local_irq_enable on canceled vmentry
ipipe: Fix IPIPE_HAVE_VM_NOTIFIER config option
ipipe: Only compile __ipipe_notify_vm_preemption when needed
ipipe: Relax context check for accessing vm_notifier in KVM callbacks
# get KVM working again on x86-64 (x86-32 is not recommended, even with vanilla)
arch/x86/Kconfig | 1 +
arch/x86/include/asm/hw_irq.h | 2 +-
arch/x86/kernel/ipipe.c | 88 ++++++++++++++-------------------
arch/x86/kernel/kgdb.c | 24 +++++----
arch/x86/kvm/x86.c | 1 +
arch/x86/lib/usercopy.c | 2 +-
include/linux/ipipe.h | 12 ++++-
include/linux/ipipe_base.h | 9 ++++
include/linux/preempt.h | 4 +-
include/linux/spinlock.h | 4 +-
kernel/debug/debug_core.c | 32 +++++++-----
kernel/debug/gdbstub.c | 6 +-
kernel/ipipe/Kconfig | 6 ++
kernel/ipipe/core.c | 39 +++++++++++++++
kernel/sched/clock.c | 10 ++--
kernel/sched/core.c | 5 +-
kernel/trace/trace.c | 6 +-
kernel/trace/trace_clock.c | 4 +-
kernel/trace/trace_functions.c | 8 ++--
kernel/trace/trace_functions_graph.c | 8 ++--
mm/Kconfig | 1 +
mm/memory.c | 79 ------------------------------
mm/mlock.c | 18 +++++++
mm/mprotect.c | 36 +++-----------
24 files changed, 193 insertions(+), 212 deletions(-)
If there is time, please have a look, specifically at generic bits. Once
testing is done and there are no remarks, I'll send a pull request.
Thanks,
Jan
--
Siemens AG, Corporate Technology, CT RTC ITP SDP-DE
Corporate Competence Center Embedded Linux
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