1 From foo@baz Tue Apr 9 07:32:41 PM CEST 2024
2 Date: Tue, 09 Apr 2024 19:32:41 +0200
3 To: Greg KH <gregkh@linuxfoundation.org>
4 From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5 Subject: x86: set SPECTRE_BHI_ON as default
7 commit 2bb69f5fc72183e1c62547d900f560d0e9334925 upstream.
9 Part of a merge commit from Linus that adjusted the default setting of
12 Cc: Linus Torvalds <torvalds@linux-foundation.org>
13 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
15 arch/x86/Kconfig | 2 +-
16 1 file changed, 1 insertion(+), 1 deletion(-)
18 --- a/arch/x86/Kconfig
19 +++ b/arch/x86/Kconfig
20 @@ -2569,7 +2569,7 @@ config MITIGATION_RFDS
22 prompt "Clear branch history"
23 depends on CPU_SUP_INTEL
24 - default SPECTRE_BHI_AUTO
25 + default SPECTRE_BHI_ON
27 Enable BHI mitigations. BHI attacks are a form of Spectre V2 attacks
28 where the branch history buffer is poisoned to speculatively steer