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linux/arch/x86/um
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Linus Torvalds 64ad946152 - Get rid of all the .fixup sections because this generates 
misleading/wrong stacktraces and confuse RELIABLE_STACKTRACE and
 LIVEPATCH as the backtrace misses the function which is being fixed up.
 
 - Add Straight Light Speculation mitigation support which uses a new
 compiler switch -mharden-sls= which sticks an INT3 after a RET or an
 indirect branch in order to block speculation after them. Reportedly,
 CPUs do speculate behind such insns.
 
 - The usual set of cleanups and improvements
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Merge tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 core updates from Borislav Petkov:

 - Get rid of all the .fixup sections because this generates
   misleading/wrong stacktraces and confuse RELIABLE_STACKTRACE and
   LIVEPATCH as the backtrace misses the function which is being fixed
   up.

 - Add Straight Line Speculation mitigation support which uses a new
   compiler switch -mharden-sls= which sticks an INT3 after a RET or an
   indirect branch in order to block speculation after them. Reportedly,
   CPUs do speculate behind such insns.

 - The usual set of cleanups and improvements

* tag 'x86_core_for_v5.17_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  x86/entry_32: Fix segment exceptions
  objtool: Remove .fixup handling
  x86: Remove .fixup section
  x86/word-at-a-time: Remove .fixup usage
  x86/usercopy: Remove .fixup usage
  x86/usercopy_32: Simplify __copy_user_intel_nocache()
  x86/sgx: Remove .fixup usage
  x86/checksum_32: Remove .fixup usage
  x86/vmx: Remove .fixup usage
  x86/kvm: Remove .fixup usage
  x86/segment: Remove .fixup usage
  x86/fpu: Remove .fixup usage
  x86/xen: Remove .fixup usage
  x86/uaccess: Remove .fixup usage
  x86/futex: Remove .fixup usage
  x86/msr: Remove .fixup usage
  x86/extable: Extend extable functionality
  x86/entry_32: Remove .fixup usage
  x86/entry_64: Remove .fixup usage
  x86/copy_mc_64: Remove .fixup usage
  ...
2022-01-12 16:31:19 -08:00
..
asm um: remove set_fs 2021-12-22 17:56:56 +01:00
os-Linux um: stop polluting the namespace with registers.h contents 2021-12-21 21:31:35 +01:00
shared/sysdep um: move amd64 variant of mmap(2) to arch/x86/um/syscalls_64.c 2021-12-21 21:30:44 +01:00
vdso kbuild: remove cc-option test of -fno-stack-protector 2020-07-07 11:13:10 +09:00
bugs_32.c
bugs_64.c
checksum_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
delay.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
elfcore.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fault.c um: don't compare a pointer to 0 2012-12-20 11:49:39 -08:00
Kconfig kbuild: use KBUILD_DEFCONFIG as the fallback for DEFCONFIG_LIST 2020-03-03 20:49:21 +09:00
ldt.c x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt() 2017-10-20 10:37:33 +02:00
Makefile uml: x86: add FORCE to user_constants.h 2021-12-21 21:13:44 +01:00
mem_32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mem_64.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ptrace_32.c um: stop polluting the namespace with registers.h contents 2021-12-21 21:31:35 +01:00
ptrace_64.c um: stop polluting the namespace with registers.h contents 2021-12-21 21:31:35 +01:00
ptrace_user.c
setjmp_32.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
setjmp_64.S x86: Prepare asm files for straight-line-speculation 2021-12-08 12:25:37 +01:00
signal.c um: stop polluting the namespace with registers.h contents 2021-12-21 21:31:35 +01:00
stub_32.S um: rework userspace stubs to not hard-code stub location 2021-02-12 21:35:02 +01:00
stub_64.S um: rework userspace stubs to not hard-code stub location 2021-02-12 21:35:02 +01:00
stub_segv.c um: fix stub location calculation 2021-08-26 22:28:03 +02:00
sys_call_table_32.c uml: trim unused junk from arch/x86/um/sys_call_table_*.c 2021-12-21 21:30:44 +01:00
sys_call_table_64.c um: move amd64 variant of mmap(2) to arch/x86/um/syscalls_64.c 2021-12-21 21:30:44 +01:00
syscalls_32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
syscalls_64.c um: stop polluting the namespace with registers.h contents 2021-12-21 21:31:35 +01:00
sysrq_32.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
sysrq_64.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
tls_32.c um: Implement copy_thread_tls 2020-01-07 13:31:29 +01:00
tls_64.c um: Implement copy_thread_tls 2020-01-07 13:31:29 +01:00
user-offsets.c um: Some fixes to build UML with musl 2020-10-11 23:13:06 +02:00