• Ingo Molnar's avatar
    x86/fpu: Standardize the parameter type of copy_kernel_to_fpregs() · 003e2e8b
    Ingo Molnar authored
    Bring the __copy_fpstate_to_fpregs() and copy_fpstate_to_fpregs() functions
    in line with the parameter passing convention of other kernel-to-FPU-registers
    copying functions: pass around an in-memory FPU register state pointer,
    instead of struct fpu *.
    
    NOTE: This patch also changes the assembly constraint of the FXSAVE-leak
          workaround from 'fpu->fpregs_active' to 'fpstate' - but that is fine,
          as we only need a valid memory address there for the FILDL instruction.
    
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Bobby Powers <bobbypowers@gmail.com>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: Fenghua Yu <fenghua.yu@intel.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Oleg Nesterov <oleg@redhat.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
    003e2e8b
x86.c 202 KB