From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, "Paul E. McKenney" <paulmck@kernel.org>,
Andy Lutomirski <luto@kernel.org>,
Alexandre Chartre <alexandre.chartre@oracle.com>,
Frederic Weisbecker <frederic@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Joel Fernandes <joel@joelfernandes.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Juergen Gross <jgross@suse.com>, Brian Gerst <brgerst@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Will Deacon <will@kernel.org>
Subject: [patch V4 part 4 00/24] x86/entry: Entry/exception code rework, nasty exceptions
Date: Tue, 05 May 2020 15:49:26 +0200 [thread overview]
Message-ID: <20200505134926.578885807@linutronix.de> (raw)
Folks,
This is the forth part of the rework series. Part 3 can be found here:
https://lore.kernel.org/r/20200505134354.774943181@linutronix.de
The series has a total of 138 patches and is split into 5 parts. The base
for this 4th series is:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-v4-part-3
The full series with all parts applied is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-v4-part-5
The forth part, i.e. this series is available from:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-v4-part-4
This part contains the modifications for complex and nasty exceptions and traps:
- Conversion of int3 including a full isolation of the text poke handler
so it is fully self contained, i.e does not call out into any
instrumentable code.
- Conversion of NMI handling including protection against instrumentation
- Conversion of #DB with separation of the user and kernel mode entries
- Conversion of #MC and #DF
The objtool check for the noinstr.text correctness is not yet added to the
build machinery and has to be invoked manually for now:
objtool check -fal vmlinux.o
The checking only works for builtin code as objtool cannot do a combined
analysis of vmlinux.o and a module.o
Thanks,
tglx
8<----------
arch/x86/entry/entry_32.S | 38 ----
arch/x86/entry/entry_64.S | 35 +---
arch/x86/include/asm/desc.h | 8
arch/x86/include/asm/idtentry.h | 235 +++++++++++++++++++++++++++++
arch/x86/include/asm/mce.h | 2
arch/x86/include/asm/ptrace.h | 2
arch/x86/include/asm/text-patching.h | 11 -
arch/x86/include/asm/traps.h | 23 --
arch/x86/kernel/alternative.c | 25 +--
arch/x86/kernel/cpu/common.c | 6
arch/x86/kernel/cpu/mce/core.c | 91 ++++++++---
arch/x86/kernel/cpu/mce/inject.c | 4
arch/x86/kernel/cpu/mce/internal.h | 2
arch/x86/kernel/cpu/mce/p5.c | 8
arch/x86/kernel/cpu/mce/winchip.c | 8
arch/x86/kernel/doublefault_32.c | 10 -
arch/x86/kernel/hw_breakpoint.c | 6
arch/x86/kernel/idt.c | 22 +-
arch/x86/kernel/nmi.c | 14 -
arch/x86/kernel/traps.c | 283 ++++++++++++++++++++++++-----------
arch/x86/kvm/vmx/vmx.c | 2
arch/x86/xen/enlighten_pv.c | 17 +-
arch/x86/xen/xen-asm_64.S | 12 -
include/linux/bsearch.h | 26 ++-
kernel/time/timekeeping.c | 2
lib/bsearch.c | 22 --
26 files changed, 615 insertions(+), 299 deletions(-)
next reply other threads:[~2020-05-05 14:16 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-05 13:49 Thomas Gleixner [this message]
2020-05-05 13:49 ` [patch V4 part 4 01/24] x86/int3: Ensure that poke_int3_handler() is not traced Thomas Gleixner
2020-05-14 4:57 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 02/24] x86/int3: Avoid atomic instrumentation Thomas Gleixner
2020-05-08 13:27 ` Masami Hiramatsu
2020-05-14 4:57 ` Andy Lutomirski
2020-05-14 9:32 ` Peter Zijlstra
2020-05-14 12:51 ` Thomas Gleixner
2020-05-14 13:15 ` Peter Zijlstra
2020-05-14 14:55 ` Andy Lutomirski
2020-05-14 15:06 ` Thomas Gleixner
2020-05-14 15:08 ` Andy Lutomirski
2020-05-14 15:10 ` Peter Zijlstra
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Peter Zijlstra
2020-05-05 13:49 ` [patch V4 part 4 03/24] lib/bsearch: Provide __always_inline variant Thomas Gleixner
2020-05-14 4:58 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Peter Zijlstra
2020-05-05 13:49 ` [patch V4 part 4 04/24] x86/int3: Inline bsearch() Thomas Gleixner
2020-05-14 4:58 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Peter Zijlstra
2020-05-05 13:49 ` [patch V4 part 4 05/24] x86/entry: Provide IDTENTRY_RAW Thomas Gleixner
2020-05-14 4:59 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] x86/idtentry: " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 06/24] x86/entry: Convert INT3 exception to IDTENTRY_RAW Thomas Gleixner
2020-05-14 5:01 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 07/24] x86/traps: Split int3 handler up Thomas Gleixner
2020-05-14 5:03 ` Andy Lutomirski
2020-05-14 9:39 ` Peter Zijlstra
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Peter Zijlstra
2020-05-05 13:49 ` [patch V4 part 4 08/24] x86/entry: Provide IDTENTRY_IST Thomas Gleixner
2020-05-14 16:39 ` Andy Lutomirski
2020-05-14 18:44 ` Thomas Gleixner
2020-05-19 19:58 ` [tip: x86/entry] x86/idtentry: " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 09/24] x86/mce: Move nmi_enter/exit() into the entry point Thomas Gleixner
2020-05-15 5:23 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 10/24] x86/entry: Convert Machine Check to IDTENTRY_IST Thomas Gleixner
2020-05-15 5:24 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 11/24] x86/mce: Use untraced rd/wrmsr in the MCE offline/crash check Thomas Gleixner
2020-05-15 5:24 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 12/24] x86/idtentry: Provide IDTENTRY_XEN for XEN/PV Thomas Gleixner
2020-05-15 5:25 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 13/24] x86/entry: Convert NMI to IDTENTRY_NMI Thomas Gleixner
2020-05-15 5:26 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 14/24] x86/nmi: Protect NMI entry against instrumentation Thomas Gleixner
2020-05-15 5:26 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 15/24] x86/db: Split out dr6/7 handling Thomas Gleixner
2020-05-07 17:18 ` Alexandre Chartre
2020-05-08 8:59 ` Peter Zijlstra
2020-05-08 11:58 ` Thomas Gleixner
2020-05-08 12:45 ` Peter Zijlstra
2020-05-14 2:24 ` Mathieu Desnoyers
2020-05-14 17:28 ` Thomas Gleixner
2020-05-14 17:46 ` Mathieu Desnoyers
2020-05-15 14:32 ` Thomas Gleixner
2020-05-14 18:06 ` Steven Rostedt
2020-05-15 5:37 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Peter Zijlstra
2020-05-05 13:49 ` [patch V4 part 4 16/24] x86/entry: Convert Debug exception to IDTENTRY_DB Thomas Gleixner
2020-05-15 5:27 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 17/24] x86/entry/64: Remove error code clearing from #DB and #MCE ASM stub Thomas Gleixner
2020-05-15 5:27 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 18/24] x86/entry: Provide IDTRENTRY_NOIST variants for #DB and #MC Thomas Gleixner
2020-05-15 5:29 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] x86/idtentry: " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 19/24] x86/entry: Implement user mode C entry points for #DB and #MCE Thomas Gleixner
2020-05-15 5:32 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 20/24] x86/traps: Restructure #DB handling Thomas Gleixner
2020-05-15 5:39 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 21/24] x86/traps: Address objtool noinstr complaints in #DB Thomas Gleixner
2020-05-15 5:39 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 22/24] x86/mce: Address objtools noinstr complaints Thomas Gleixner
2020-05-15 5:40 ` Andy Lutomirski
2020-05-19 19:58 ` [tip: x86/entry] " tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 23/24] x86/entry: Provide IDTENTRY_DF Thomas Gleixner
2020-05-15 5:41 ` Andy Lutomirski
2020-05-15 15:01 ` Thomas Gleixner
2020-05-19 19:58 ` [tip: x86/entry] x86/idtentry: " tip-bot2 for Thomas Gleixner
2020-05-19 19:58 ` [tip: x86/entry] x86/entry: Convert double fault exception to IDTENTRY_DF tip-bot2 for Thomas Gleixner
2020-05-05 13:49 ` [patch V4 part 4 24/24] " Thomas Gleixner
2020-05-07 19:55 ` Alexandre Chartre
2020-05-15 5:42 ` Andy Lutomirski
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