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Petr Mladek 31adf2308f livepatch: Convert error about unsupported reliable stacktrace into a warning 
The commit d0807da78e ("livepatch: Remove immediate feature") caused
that any livepatch was refused when reliable stacktraces were not supported
on the given architecture.

The limitation is too strong. User space processes are safely migrated
even when entering or leaving the kernel. Kthreads transition would
need to get forced. But it is safe when:

   + The livepatch does not change the semantic of the code.
   + Callbacks do not depend on a safely finished transition.

Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
2019-04-29 14:46:07 +02:00
arch
block
certs
crypto
Documentation livepatch: Remove signal sysfs attribute 2019-01-16 22:09:33 +01:00
drivers Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2019-01-05 16:07:28 -08:00
firmware
fs
include livepatch: Add atomic replace 2019-01-11 20:51:24 +01:00
init
ipc
kernel livepatch: Convert error about unsupported reliable stacktrace into a warning 2019-04-29 14:46:07 +02:00
lib livepatch: Proper error handling in the shadow variables selftest 2019-02-06 11:01:57 +01:00
LICENSES
mm
net
samples Merge branch 'for-5.0/upstream-fixes' into for-linus 2019-03-05 15:55:59 +01:00
scripts
security
sound
tools livepatch/selftests: use "$@" to preserve argument list 2019-02-12 10:58:47 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge branch 'for-5.0/upstream-fixes' into for-linus 2019-03-05 15:55:59 +01:00
Makefile kbuild: use -flive-patching when CONFIG_LIVEPATCH is enabled 2019-04-08 16:48:52 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.