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(parent: e03415e) | patch
x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
authorPawan Gupta <pawan.kumar.gupta@linux.intel.com>
Tue, 14 Jun 2022 21:15:55 +0000 (23:15 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 23 Jul 2022 10:54:03 +0000 (12:54 +0200)
commit347d0bf6b0c020ca0284b3fd96652470e06bd084
treee79bc9d5d60dddcab6c3f2dcd911002ab60ff8catree | snapshot
parente03415eeba781f0b7568d359e5f161a7b3a5c7c7commit | diff
x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS

commit 7c693f54c873691a4b7da05c7e0f74e67745d144 upstream.

Extend spectre_v2= boot option with Kernel IBRS.

  [jpoimboe: no STIBP with IBRS]

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.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>
Documentation/admin-guide/kernel-parameters.txt diff | blob | history
arch/x86/include/asm/nospec-branch.h diff | blob | history
arch/x86/kernel/cpu/bugs.c diff | blob | history
Domain: System / Kernel;