Josh Poimboeuf 2a2dfe6a31 x86/build: Disable CET instrumentation in the kernel ... commit 20bf2b378729c4a0366a53e2018a0b70ace94bcd upstream. With retpolines disabled, some configurations of GCC, and specifically the GCC versions 9 and 10 in Ubuntu will add Intel CET instrumentation to the kernel by default. That breaks certain tracing scenarios by adding a superfluous ENDBR64 instruction before the fentry call, for functions which can be called indirectly. CET instrumentation isn't currently necessary in the kernel, as CET is only supported in user space. Disable it unconditionally and move it into the x86's Makefile as CET/CFI... enablement should be a per-arch decision anyway. [ bp: Massage and extend commit message. ] Fixes: 29be86d7f9 ("kbuild: add -fcf-protection=none when using retpoline flags") Reported-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Tested-by: Nikolay Borisov <nborisov@suse.com> Cc: <stable@vger.kernel.org> Cc: Seth Forshee <seth.forshee@canonical.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Link: https://lkml.kernel.org/r/20210128215219.6kct3h2eiustncws@treble Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-02-10 09:29:21 +01:00
..
boot	A set of fixes for x86:	2020-12-06 11:22:39 -08:00
configs	* A defconfig fix, from Daniel Díaz.	2020-09-20 15:06:43 -07:00
crypto	crypto: x86/poly1305 - add back a needed assignment	2020-10-24 09:38:32 +11:00
entry	x86/entry: Emit a symbol for register restoring thunk	2021-02-03 23:28:40 +01:00
events	perf/x86/intel/lbr: Fix the return type of get_lbr_cycles()	2020-12-30 11:54:10 +01:00
hyperv	x86/hyperv: Fix kexec panic/hang issues	2021-01-27 11:54:57 +01:00
ia32	x86: remove address space overrides using set_fs()	2020-09-08 22:21:36 -04:00
include	x86/cpu: Add another Alder Lake CPU to the Intel family	2021-02-07 15:37:17 +01:00
kernel	Revert "x86/setup: don't remove E820_TYPE_RAM for pfn 0"	2021-02-07 15:37:13 +01:00
kvm	KVM: x86: Set so called 'reserved CR3 bits in LM mask' at vCPU reset	2021-02-10 09:29:20 +01:00
lib	x86/mmx: Use KFPU_387 for MMX string operations	2021-01-27 11:55:13 +01:00
math-emu	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
mm	KVM: SVM: Treat SVM as unsupported when running as an SEV guest	2021-02-10 09:29:19 +01:00
net	bpf: x64: Do not emit sub/add 0, %rsp when !stack_depth	2020-09-29 16:47:39 -07:00
oprofile
pci	pci-v5.10-changes	2020-10-22 12:41:00 -07:00
platform	efi/x86: Free efi_pgd with free_pages()	2020-11-10 19:18:11 +01:00
power	Kbuild updates for v5.9	2020-08-09 14:10:26 -07:00
purgatory	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
ras
realmode	x86/head/64: Don't call verify_cpu() on starting APs	2020-09-09 11:33:20 +02:00
tools	x86/insn: Make inat-tables.c suitable for pre-decompression code	2020-09-07 19:45:24 +02:00
um	arch/um: partially revert the conversion to __section() macro	2020-10-26 15:39:37 -07:00
video
xen	x86/xen: avoid warning in Xen pv guest with CONFIG_AMD_MEM_ENCRYPT enabled	2021-02-03 23:28:38 +01:00
.gitignore
Kbuild
Kconfig	fanotify: Fix sys_fanotify_mark() on native x86-32	2021-01-17 14:16:59 +01:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug	x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}()	2020-10-06 11:18:04 +02:00
Makefile	x86/build: Disable CET instrumentation in the kernel	2021-02-10 09:29:21 +01:00
Makefile_32.cpu
Makefile.um