Date: Thu, 11 Jul 2019 13:45:25 +0200 From: <gregkh@...uxfoundation.org> To: bp@...en8.de,fweimer@...hat.com,gregkh@...uxfoundation.org,jannh@...gle.com,keescook@...omium.org,kernel-hardening@...ts.openwall.com,luto@...nel.org,peterz@...radead.org,tglx@...utronix.de Cc: <stable-commits@...r.kernel.org> Subject: Patch "Documentation/admin: Remove the vsyscall=native documentation" has been added to the 4.19-stable tree This is a note to let you know that I've just added the patch titled Documentation/admin: Remove the vsyscall=native documentation to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: documentation-admin-remove-the-vsyscall-native-documentation.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@...r.kernel.org> know about it. >From d974ffcfb7447db5f29a4b662a3eaf99a4e1109e Mon Sep 17 00:00:00 2001 From: Andy Lutomirski <luto@...nel.org> Date: Wed, 26 Jun 2019 21:45:02 -0700 Subject: Documentation/admin: Remove the vsyscall=native documentation From: Andy Lutomirski <luto@...nel.org> commit d974ffcfb7447db5f29a4b662a3eaf99a4e1109e upstream. The vsyscall=native feature is gone -- remove the docs. Fixes: 076ca272a14c ("x86/vsyscall/64: Drop "native" vsyscalls") Signed-off-by: Andy Lutomirski <luto@...nel.org> Signed-off-by: Thomas Gleixner <tglx@...utronix.de> Acked-by: Kees Cook <keescook@...omium.org> Cc: Florian Weimer <fweimer@...hat.com> Cc: Jann Horn <jannh@...gle.com> Cc: stable@...r.kernel.org Cc: Borislav Petkov <bp@...en8.de> Cc: Kernel Hardening <kernel-hardening@...ts.openwall.com> Cc: Peter Zijlstra <peterz@...radead.org> Link: https://firstname.lastname@example.org Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- Documentation/admin-guide/kernel-parameters.txt | 6 ------ 1 file changed, 6 deletions(-) --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4976,12 +4976,6 @@ emulate [default] Vsyscalls turn into traps and are emulated reasonably safely. - native Vsyscalls are native syscall instructions. - This is a little bit faster than trapping - and makes a few dynamic recompilers work - better than they would in emulation mode. - It also makes exploits much easier to write. - none Vsyscalls don't work at all. This makes them quite hard to use for exploits but might break your system. Patches currently in stable-queue which might be from luto@...nel.org are queue-4.19/documentation-admin-remove-the-vsyscall-native-documentation.patch
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