From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@kernel.org>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
"Frédéric Weisbecker" <fweisbec@gmail.com>,
"Rik van Riel" <riel@redhat.com>,
"Oleg Nesterov" <oleg@redhat.com>,
"Denys Vlasenko" <vda.linux@googlemail.com>,
"Kees Cook" <keescook@chromium.org>,
"Brian Gerst" <brgerst@gmail.com>,
paulmck@linux.vnet.ibm.com
Subject: Re: [PATCH v4 06/17] x86: Move C entry and exit code to arch/x86/entry/common.c
Date: Tue, 30 Jun 2015 18:32:33 +0200 [thread overview]
Message-ID: <20150630163233.GE23297@pd.tnic> (raw)
In-Reply-To: <8e6fd030cfaf1313f288cc4967077abfbf483480.1435602481.git.luto@kernel.org>
On Mon, Jun 29, 2015 at 12:33:38PM -0700, Andy Lutomirski wrote:
> The entry and exit C helpers were confusingly scattered between
> ptrace.c and signal.c, even though they aren't specific to ptrace or
> signal handling. Move them together in a new file.
>
> This change just moves code around. It doesn't change anything.
>
> Signed-off-by: Andy Lutomirski <luto@kernel.org>
> ---
> arch/x86/entry/Makefile | 1 +
> arch/x86/entry/common.c | 253 ++++++++++++++++++++++++++++++++++++++++++
> arch/x86/include/asm/signal.h | 1 +
> arch/x86/kernel/ptrace.c | 202 +--------------------------------
> arch/x86/kernel/signal.c | 28 +----
> 5 files changed, 257 insertions(+), 228 deletions(-)
> create mode 100644 arch/x86/entry/common.c
>
> diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile
> index 7a144971db79..bd55dedd7614 100644
> --- a/arch/x86/entry/Makefile
> +++ b/arch/x86/entry/Makefile
> @@ -2,6 +2,7 @@
> # Makefile for the x86 low level entry code
> #
> obj-y := entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
> +obj-y += common.o
>
> obj-y += vdso/
> obj-y += vsyscall/
> diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
> new file mode 100644
> index 000000000000..348465473e55
> --- /dev/null
> +++ b/arch/x86/entry/common.c
> @@ -0,0 +1,253 @@
> +/*
> + * entry.c - C code for kernel entry and exit
common.c
> + * Copyright (c) 2015 Andrew Lutomirski
> + * GPL v2
> + *
> + * Based on asm and ptrace code by many authors. The code here originated
> + * in ptrace.c and signal.c.
> + */
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2015-06-30 16:32 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-29 19:33 [PATCH v4 00/17] x86: Rewrite exit-to-userspace code Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 01/17] selftests/x86: Add a test for 32-bit fast syscall arg faults Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 02/17] x86/entry/64/compat: Fix bad fast syscall arg failure path Andy Lutomirski
2015-06-30 10:58 ` Borislav Petkov
2015-06-30 11:06 ` Ingo Molnar
2015-06-30 16:04 ` Andy Lutomirski
2015-07-01 7:43 ` Ingo Molnar
2015-06-29 19:33 ` [PATCH v4 03/17] uml: Fix do_signal() prototype Andy Lutomirski
2015-06-29 20:47 ` Richard Weinberger
2015-06-29 19:33 ` [PATCH v4 04/17] context_tracking: Add ct_state and CT_WARN_ON Andy Lutomirski
2015-06-30 12:20 ` Borislav Petkov
2015-06-30 12:53 ` Ingo Molnar
2015-06-29 19:33 ` [PATCH v4 05/17] notifiers: Assert that RCU is watching in notify_die Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 06/17] x86: Move C entry and exit code to arch/x86/entry/common.c Andy Lutomirski
2015-06-30 16:32 ` Borislav Petkov [this message]
2015-06-29 19:33 ` [PATCH v4 07/17] x86/traps: Assert that we're in CONTEXT_KERNEL in exception entries Andy Lutomirski
2015-06-30 17:01 ` Borislav Petkov
2015-06-30 17:08 ` Andy Lutomirski
2015-06-30 17:15 ` Borislav Petkov
2015-06-29 19:33 ` [PATCH v4 08/17] x86/entry: Add enter_from_user_mode and use it in syscalls Andy Lutomirski
2015-07-01 10:24 ` Borislav Petkov
2015-06-29 19:33 ` [PATCH v4 09/17] x86/entry: Add new, comprehensible entry and exit hooks Andy Lutomirski
2015-07-02 9:48 ` Borislav Petkov
2015-07-02 16:03 ` Andy Lutomirski
2015-07-02 16:25 ` Borislav Petkov
2015-06-29 19:33 ` [PATCH v4 10/17] x86/entry/64: Really create an error-entry-from-usermode code path Andy Lutomirski
2015-07-02 10:25 ` Borislav Petkov
2015-07-02 15:33 ` Andy Lutomirski
2015-07-02 16:29 ` Borislav Petkov
2015-06-29 19:33 ` [PATCH v4 11/17] x86/entry/64: Migrate 64-bit and compat syscalls to new exit hooks Andy Lutomirski
2015-07-02 10:49 ` Borislav Petkov
2015-07-02 15:56 ` Andy Lutomirski
2015-07-02 16:56 ` Denys Vlasenko
2015-06-29 19:33 ` [PATCH v4 12/17] x86/asm/entry/64: Save all regs on interrupt entry Andy Lutomirski
2015-07-02 10:52 ` Borislav Petkov
2015-07-02 15:33 ` Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 13/17] x86/asm/entry/64: Simplify irq stack pt_regs handling Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 14/17] x86/asm/entry/64: Migrate error and interrupt exit work to C Andy Lutomirski
2015-07-02 12:09 ` Borislav Petkov
2015-07-02 16:09 ` Andy Lutomirski
2015-07-02 16:33 ` Borislav Petkov
2015-07-03 6:33 ` Ingo Molnar
2015-07-03 16:27 ` Andy Lutomirski
2015-07-03 16:29 ` Andy Lutomirski
2015-07-03 14:37 ` Denys Vlasenko
2015-07-03 16:24 ` Andy Lutomirski
2015-07-04 8:12 ` Ingo Molnar
2015-06-29 19:33 ` [PATCH v4 15/17] x86/entry: Remove exception_enter from most trap handlers Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 16/17] x86/entry: Remove SCHEDULE_USER and asm/context-tracking.h Andy Lutomirski
2015-06-29 19:33 ` [PATCH v4 17/17] x86/irq: Document how IRQ context tracking works and add an assertion Andy Lutomirski
2015-06-29 19:46 ` [PATCH v4 00/17] x86: Rewrite exit-to-userspace code Richard Weinberger
2015-06-29 20:14 ` Andy Lutomirski
2015-07-02 16:45 ` Borislav Petkov
2015-07-03 6:34 ` Ingo Molnar
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