• Linus Torvalds's avatar
    Merge tag 'x86_fpu_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 40deb5e4
    Linus Torvalds authored
    Pull x86 fpu updates from Dave Hansen:
     "There are two little fixes in here, one to give better XSAVE warnings
      and another to address some undefined behavior in offsetof().
    
      There is also a collection of patches to fix some issues with ptrace
      and the protection keys register (PKRU). PKRU is a real oddity because
      it is exposed in the XSAVE-related ABIs, but it is generally managed
      without using XSAVE in the kernel. This fix thankfully came with a
      selftest to ward off future regressions.
    
      Summary:
    
       - Clarify XSAVE consistency warnings
    
       - Fix up ptrace interface to protection keys register (PKRU)
    
       - Avoid undefined compiler behavior with TYPE_ALIGN"
    
    * tag 'x86_fpu_for_6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      x86/fpu: Use _Alignof to avoid undefined behavior in TYPE_ALIGN
      selftests/vm/pkeys: Add a regression test for setting PKRU through ptrace
      x86/fpu: Emulate XRSTOR's behavior if the xfeatures PKRU bit is not set
      x86/fpu: Allow PKRU to be (once again) written by ptrace.
      x86/fpu: Add a pkru argument to copy_uabi_to_xstate()
      x86/fpu: Add a pkru argument to copy_uabi_from_kernel_to_xstate().
      x86/fpu: Take task_struct* in copy_sigframe_from_user_to_xstate()
      x86/fpu/xstate: Fix XSTATE_WARN_ON() to emit relevant diagnostics
    40deb5e4
core.c 23.4 KB