Josh Poimboeuf ca47b5c598 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: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-11-23 07:53:45 +01:00

..

syscalls

x86: Wire up restartable sequence system call

2018-06-06 11:58:32 +02:00

vdso

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

2022-08-25 11:14:50 +02:00

vsyscall

docs: Fix some broken references

2018-06-15 18:10:01 -03:00

calling.h

x86/entry: Add kernel IBRS implementation

2022-11-23 07:53:45 +01:00

common.c

x86/speculation/mds: Clear CPU buffers on exit to user

2019-05-14 19:17:55 +02:00

entry_32.S

x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

2022-11-23 07:53:45 +01:00

entry_64_compat.S

x86/entry: Add kernel IBRS implementation

2022-11-23 07:53:45 +01:00

entry_64.S

x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

2022-11-23 07:53:45 +01:00

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: Unconditionally enable 'struct pt_regs' based syscalls on x86_64

2018-04-05 16:59:38 +02:00

syscall_64.c

syscalls/x86: Unconditionally enable 'struct pt_regs' based syscalls on x86_64

2018-04-05 16:59:38 +02:00

thunk_32.S

x86: move exports to actual definitions

2016-08-07 23:47:15 -04:00

thunk_64.S

x86: move exports to actual definitions

2016-08-07 23:47:15 -04:00