1. 02 Jul, 2015 1 commit
  2. 08 Jun, 2015 1 commit
    • Ingo Molnar's avatar
      x86/asm/entry: Rename compat syscall entry points · 2cd23553
      Ingo Molnar authored
      Rename the following system call entry points:
      	ia32_cstar_target       -> entry_SYSCALL_compat
      	ia32_syscall            -> entry_INT80_compat
      The generic naming scheme for x86 system call entry points is:
      where 'qualifier' is one of _32, _64 or _compat.
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
  3. 02 Jan, 2015 1 commit
    • Andy Lutomirski's avatar
      x86, entry: Switch stacks on a paranoid entry from userspace · 48e08d0f
      Andy Lutomirski authored
      This causes all non-NMI, non-double-fault kernel entries from
      userspace to run on the normal kernel stack.  Double-fault is
      exempt to minimize confusion if we double-fault directly from
      userspace due to a bad kernel stack.
      This is, suprisingly, simpler and shorter than the current code.  It
      removes the IMO rather frightening paranoid_userspace path, and it
      make sync_regs much simpler.
      There is no risk of stack overflow due to this change -- the kernel
      stack that we switch to is empty.
      This will also enable us to create non-atomic sections within
      machine checks from userspace, which will simplify memory failure
      handling.  It will also allow the upcoming fsgsbase code to be
      simplified, because it doesn't need to worry about usergs when
      scheduling in paranoid_exit, as that code no longer exists.
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: Tony Luck <tony.luck@intel.com>
      Acked-by: default avatarBorislav Petkov <bp@alien8.de>
      Signed-off-by: default avatarAndy Lutomirski <luto@amacapital.net>
  4. 11 Dec, 2014 1 commit
  5. 16 Aug, 2011 1 commit
  6. 05 Jun, 2011 1 commit