1. 14 6月, 2016 2 次提交
    • D
      x86/signals: Add missing signal_compat code for x86 features · a4455082
      Dave Hansen 提交于
      The 32-bit siginfo is a different binary format than the 64-bit
      one.  So, when running 32-bit binaries on 64-bit kernels, we have
      to convert the kernel's 64-bit version to a 32-bit version that
      userspace can grok.
      
      We've added a few features to siginfo over the past few years and
      neglected to add them to arch/x86/kernel/signal_compat.c:
      
         1. The si_addr_lsb used in SIGBUS's sent for machine checks
         2. The upper/lower bounds for MPX SIGSEGV faults
         3. The protection key for pkey faults
      
      I caught this with some protection keys unit tests and realized
      it affected a few more features.
      
      This was tested only with my protection keys patch that looks
      for a proper value in si_pkey.  I didn't actually test the machine
      check or MPX code.
      Signed-off-by: NDave Hansen <dave.hansen@linux.intel.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Andy Lutomirski <luto@kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Brian Gerst <brgerst@gmail.com>
      Cc: Dave Hansen <dave@sr71.net>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: linux-edac@vger.kernel.org
      Link: http://lkml.kernel.org/r/20160608172533.F8F05637@viggo.jf.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
      a4455082
    • A
      x86/vdso/32: Assemble sigreturn.S separately · f0702555
      Andy Lutomirski 提交于
      sigreturn.S was historically included by the various
      __kernel_vsyscall implementations due to assumptions about all the
      32-bit vDSO images having the sigreturn symbols at the same address.
      
      Those assumptions were removed in v3.16, and as of v4.4, there is only
      a single 32-bit vDSO left.
      
      Simplify the build process by assembling sigreturn.S into a normal
      object file.
      Signed-off-by: NAndy Lutomirski <luto@kernel.org>
      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>
      Link: http://lkml.kernel.org/r/d7b6dfde3c7397aa26977320da90448363b5a7e9.1465505753.git.luto@kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      f0702555
  2. 11 6月, 2016 8 次提交
  3. 10 6月, 2016 30 次提交
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