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Filename Latest commit message Latest commit date
Sean Christopherson 2bcbd40671 Revert "compiler-gcc: disable -ftracer for __noclone functions" 
The -ftracer optimization was disabled in __noclone as a workaround to
GCC duplicating a blob of inline assembly that happened to define a
global variable.  It has been pointed out that no amount of workarounds
can guarantee the compiler won't duplicate inline assembly[1], and that
disabling the -ftracer optimization has several unintended and nasty
side effects[2][3].

Now that the offending KVM code which required the workaround has
been properly fixed and no longer uses __noclone, remove the -ftracer
optimization tweak from __noclone.

[1] https://lore.kernel.org/lkml/ri6y38lo23g.fsf@suse.cz/T/#u
[2] https://lore.kernel.org/lkml/20181218140105.ajuiglkpvstt3qxs@treble/T/#u
[3] https://patchwork.kernel.org/patch/8707981/#21817015

This reverts commit 95272c2937.

Suggested-by: Andi Kleen <ak@linux.intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Nadav Amit <namit@vmware.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Martin Jambor <mjambor@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-12-21 12:44:28 +01:00
arch KVM: VMX: Move VM-Enter + VM-Exit handling to non-inline sub-routines 2018-12-21 12:02:50 +01:00
block blk-mq: punt failed direct issue to dispatch list 2018-12-07 08:16:11 -07:00
certs
crypto crypto: user - Disable statistics interface 2018-12-07 13:56:08 +08:00
Documentation x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID 2018-12-14 17:59:54 +01:00
drivers x86/hyper-v: move synic/stimer control structures definitions to hyperv-tlfs.h 2018-12-14 17:59:56 +01:00
firmware
fs a fix for smb3 direct i/o, a fix for CIFS DFS for stable and a minor cifs Kconfig fix 2018-12-09 10:15:13 -08:00
include Revert "compiler-gcc: disable -ftracer for __noclone functions" 2018-12-21 12:44:28 +01:00
init initramfs: clean old path before creating a hardlink 2018-11-30 14:56:14 -08:00
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
lib debugobjects: avoid recursive calls with kmemleak 2018-11-30 14:56:14 -08:00
LICENSES
mm dax fixes 4.20-rc6 2018-12-09 09:54:04 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-09 15:12:33 -08:00
samples
scripts Fixes for stackleak 2018-12-07 13:13:07 -08:00
security selinux/stable-4.20 PR 20181129 2018-11-29 10:15:06 -08:00
sound ALSA: hda/realtek: Fix mic issue on Acer AIO Veriton Z4860G/Z6860G 2018-12-05 16:39:59 +01:00
tools kvm: selftests: aarch64: dirty_log_test: support greater than 40-bit IPAs 2018-12-21 11:28:30 +01:00
usr
virt KVM/MMU: Move tlb flush in kvm_set_pte_rmapp() to kvm_mmu_notifier_change_pte() 2018-12-21 11:28:42 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: Add arch/x86/kvm sub-directories to existing KVM/x86 entry 2018-12-21 11:47:44 +01:00
Makefile Linux 4.20-rc6 2018-12-09 15:31:00 -08:00
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.