Josh Poimboeuf 03a575a0f9 x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n ...

commit b2620facef4889fefcbf2e87284f34dcd4189bce upstream.

If a kernel is built with CONFIG_RETPOLINE=n, but the user still wants
to mitigate Spectre v2 using IBRS or eIBRS, the RSB filling will be
silently disabled.

There's nothing retpoline-specific about RSB buffer filling.  Remove the
CONFIG_RETPOLINE guards around it.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-10-07 09:16:55 +02:00

..

syscalls

syscalls/x86: Use the correct function type for sys_ni_syscall

2020-01-17 19:48:31 +01:00

vdso

x86: link vdso and boot with -z noexecstack --no-warn-rwx-segments

2022-08-25 11:17:17 +02:00

vsyscall

Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2019-07-08 21:48:15 -07:00

calling.h

x86/entry: Add kernel IBRS implementation

2022-10-07 09:16:55 +02:00

common.c

x86/syscalls: Split the x32 syscalls into their own table

2019-07-22 10:31:23 +02:00

entry_32.S

x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

2022-10-07 09:16:55 +02:00

entry_64_compat.S

x86/entry: Add kernel IBRS implementation

2022-10-07 09:16:55 +02:00

entry_64.S

x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

2022-10-07 09:16:55 +02:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

syscall_32.c

syscalls/x86: Use the correct function type for sys_ni_syscall

2020-01-17 19:48:31 +01:00

syscall_64.c

syscalls/x86: Use the correct function type for sys_ni_syscall

2020-01-17 19:48:31 +01:00

thunk_32.S

x86: Use CONFIG_PREEMPTION

2019-07-31 19:03:35 +02:00

thunk_64.S

x86: Use CONFIG_PREEMPTION

2019-07-31 19:03:35 +02:00