linux.git/arch/um/os-Linux, branch v4.13 Linux kernel source tree um: Add kerneldoc for userspace_tramp() and start_userspace() 2017-07-07T08:54:03+00:00 Thomas Meyer thomas@m3y3r.de 2017-07-05T22:34:05+00:00 e90998302682c41df4813da1ae019c8db79775f5 Also use correct function name spelling (stub_segv_handler) for better grepping Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Richard Weinberger <richard@nod.at> 
Also use correct function name spelling (stub_segv_handler) for better grepping

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: userspace - be more verbose in ptrace set regs error 2017-07-07T08:37:42+00:00 Thomas Meyer thomas@m3y3r.de 2017-07-05T22:31:14+00:00 22e19c8d062cc19832cde13225cbc6e5283cd969 When ptrace fails to set GP/FP regs for the target process, log the error before crashing the UML kernel. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: Richard Weinberger <richard@nod.at> 
When ptrace fails to set GP/FP regs for the target process,
log the error before crashing the UML kernel.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Use os_warn to print out pre-boot warning/error messages 2017-07-05T21:18:25+00:00 Masami Hiramatsu mhiramat@kernel.org 2017-05-17T17:19:31+00:00 0936d4f3d5a3d5daf453bc341f02ba4e68cfe40e Use os_warn() instead of printf/fprintf to print out pre-boot warning/error messages to stderr. Note that the help message and version message are kept to print out to stdout, because user explicitly specifies those options to get such information. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Richard Weinberger <richard@nod.at> 
Use os_warn() instead of printf/fprintf to print out
pre-boot warning/error messages to stderr.
Note that the help message and version message are
kept to print out to stdout, because user explicitly
specifies those options to get such information.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Add os_warn() for pre-boot warning/error messages 2017-07-05T21:18:02+00:00 Masami Hiramatsu mhiramat@kernel.org 2017-05-17T17:18:22+00:00 721ccae88d04f7e9334fde4cbb3eecfaa70a31ac Add os_warn() for printing out pre-boot warning/error messages in stderr. The messages via os_warn() are not suppressed by quiet option. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Richard Weinberger <richard@nod.at> 
Add os_warn() for printing out pre-boot warning/error
messages in stderr. The messages via os_warn() are not
suppressed by quiet option.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Use os_info for the messages on normal path 2017-07-05T21:17:42+00:00 Masami Hiramatsu mhiramat@kernel.org 2017-05-17T17:17:14+00:00 d3878bb8003009d148cd787e1a2d74cff914a7b2 Use os_info() for printing out the messages on the normal execution path. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Richard Weinberger <richard@nod.at> 
Use os_info() for printing out the messages on the
normal execution path.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Add os_info() for pre-boot information messages 2017-07-05T21:17:16+00:00 Masami Hiramatsu mhiramat@kernel.org 2017-05-17T17:16:05+00:00 f7887ee11082b468517f31ae315b474eaa48b843 Add os_info() for printing out pre-boot information level messages in stderr. The messages via os_info() are suppressed by "quiet" kernel command line. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Richard Weinberger <richard@nod.at> 
Add os_info() for printing out pre-boot information
level messages in stderr. The messages via os_info()
are suppressed by "quiet" kernel command line.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Use printk instead of printf in make_uml_dir 2017-07-05T21:16:44+00:00 Masami Hiramatsu mhiramat@kernel.org 2017-05-17T17:14:57+00:00 e03c78ac2d7709b7556a9b8dd584e2969c6fce67 Since this function will be called after printk buffer initialized, use printk as other functions do. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Richard Weinberger <richard@nod.at> 
Since this function will be called after printk buffer
initialized, use printk as other functions do.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Add missing NR_CPUS include 2017-05-04T06:15:10+00:00 Richard Weinberger richard@nod.at 2017-05-04T06:15:10+00:00 ce4586063f1af780b1c6b7e344907e6f9c1ba59a We need linux/threads.h for that variable. Fixes: 8bba077066d6d0 ("um: Set number of CPUs") Signed-off-by: Richard Weinberger <richard@nod.at> 
We need linux/threads.h for that variable.

Fixes: 8bba077066d6d0 ("um: Set number of CPUs")
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Set number of CPUs 2017-05-03T20:33:52+00:00 Nikola Kotur kotnick@gmail.com 2017-03-02T13:16:40+00:00 8bba077066d6d0a135b7be1970691522075bf905 Define NR_CPUS required by the timer subsystem. Fixes this make warning: scripts/kconfig/conf --oldconfig arch/x86/um/Kconfig kernel/time/Kconfig:155:warning: range is invalid Signed-off-by: Nikola Kotur <kotnick@gmail.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
Define NR_CPUS required by the timer subsystem.

Fixes this make warning:

    scripts/kconfig/conf  --oldconfig arch/x86/um/Kconfig
    kernel/time/Kconfig:155:warning: range is invalid

Signed-off-by: Nikola Kotur <kotnick@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
um: Support kcov 2016-08-03T22:18:06+00:00 Vegard Nossum vegard.nossum@oracle.com 2016-05-21T15:46:10+00:00 915eed20e40f4dcb142cb29a3de6f6ba67f4bb5a This adds support for kcov to UML. There is a small problem where UML will randomly segfault during boot; this is because current_thread_info() occasionally returns an invalid (non-NULL) pointer and we try to dereference it in __sanitizer_cov_trace_pc(). I consider this a bug in UML itself and this patch merely exposes it. [v2: disable instrumentation in UML-specific code] Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Meyer <thomas@m3y3r.de> Cc: user-mode-linux-devel <user-mode-linux-devel@lists.sourceforge.net> Cc: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Richard Weinberger <richard@nod.at> 
This adds support for kcov to UML.

There is a small problem where UML will randomly segfault during boot;
this is because current_thread_info() occasionally returns an invalid
(non-NULL) pointer and we try to dereference it in
__sanitizer_cov_trace_pc(). I consider this a bug in UML itself and this
patch merely exposes it.

[v2: disable instrumentation in UML-specific code]

Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: user-mode-linux-devel <user-mode-linux-devel@lists.sourceforge.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>