uml: ptrace floating point fixes
Handle floating point state better in ptrace. The code now correctly
distinguishes between PTRACE_[GS]ETFPREGS and PTRACE_[GS]ETFPXREGS. The FPX
requests get handed off to arch-specific code because that's not generic.
get_fpregs, set_fpregs, set_fpregs, and set_fpxregs needed real
implementations.
Something here exposed a missing include in asm/page.h, which needed
linux/types.h in order to get gfp_t, so that's fixed here.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index db55a01..2511f91 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -143,22 +143,14 @@
#endif
#ifdef PTRACE_GETFPREGS
case PTRACE_GETFPREGS: /* Get the child FPU state. */
- ret = get_fpregs(data, child);
+ ret = get_fpregs((struct user_i387_struct __user *) data,
+ child);
break;
#endif
#ifdef PTRACE_SETFPREGS
case PTRACE_SETFPREGS: /* Set the child FPU state. */
- ret = set_fpregs(data, child);
- break;
-#endif
-#ifdef PTRACE_GETFPXREGS
- case PTRACE_GETFPXREGS: /* Get the child FPU state. */
- ret = get_fpxregs(data, child);
- break;
-#endif
-#ifdef PTRACE_SETFPXREGS
- case PTRACE_SETFPXREGS: /* Set the child FPU state. */
- ret = set_fpxregs(data, child);
+ ret = set_fpregs((struct user_i387_struct __user *) data,
+ child);
break;
#endif
case PTRACE_GET_THREAD_AREA:
@@ -227,6 +219,8 @@
#endif
default:
ret = ptrace_request(child, request, addr, data);
+ if (ret == -EIO)
+ ret = subarch_ptrace(child, request, addr, data);
break;
}