From b745cfba44c152c34363eea9e052367b6b1d652b Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Thu, 28 May 2020 16:13:58 -0400 Subject: x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit Now that FSGSBASE is fully supported, remove unsafe_fsgsbase, enable FSGSBASE by default, and add nofsgsbase to disable it. Signed-off-by: Andy Lutomirski Signed-off-by: Chang S. Bae Signed-off-by: Thomas Gleixner Signed-off-by: Sasha Levin Signed-off-by: Thomas Gleixner Reviewed-by: Andi Kleen Link: https://lkml.kernel.org/r/1557309753-24073-17-git-send-email-chang.seok.bae@intel.com Link: https://lkml.kernel.org/r/20200528201402.1708239-13-sashal@kernel.org --- Documentation/admin-guide/kernel-parameters.txt | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'Documentation/admin-guide/kernel-parameters.txt') diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 7308db7308ba..8c0d045f1dc7 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3079,8 +3079,7 @@ no5lvl [X86-64] Disable 5-level paging mode. Forces kernel to use 4-level paging instead. - unsafe_fsgsbase [X86] Allow FSGSBASE instructions. This will be - replaced with a nofsgsbase flag. + nofsgsbase [X86] Disables FSGSBASE instructions. no_console_suspend [HW] Never suspend the console -- cgit v1.2.3