]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
x86/asm/entry: Add user_mode_ignore_vm86()
authorAndy Lutomirski <luto@kernel.org>
Thu, 19 Mar 2015 01:33:29 +0000 (18:33 -0700)
committerIngo Molnar <mingo@kernel.org>
Mon, 23 Mar 2015 10:13:36 +0000 (11:13 +0100)
commita67e7277d01ccfd39b0db5a198c2643cc19dd79c
tree01425f65fe45e24354747dfb11f6b47b7309e6dd
parente4518ab90f63cd5bea3ddc15341162debc34442b
x86/asm/entry: Add user_mode_ignore_vm86()

user_mode() is dangerous and user_mode_vm() has a confusing name.

Add user_mode_ignore_vm86() (equivalent to current user_mode()).
We'll change the small number of legitimate users of user_mode()
to user_mode_ignore_vm86().

Inspired by grsec, although this works rather differently.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brad Spengler <spender@grsecurity.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/202c56ca63823c338af8e2e54948dbe222da6343.1426728647.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/ptrace.h