4 files changed, 7 insertions, 15 deletions
diff --git a/arch/x86/um/shared/sysdep/ptrace.h b/arch/x86/um/shared/sysdep/ptrace.h
index 6ca4ecabc55b..2dd4ca6713f8 100644
--- a/arch/x86/um/shared/sysdep/ptrace.h
+++ b/arch/x86/um/shared/sysdep/ptrace.h
@@ -56,12 +56,16 @@ struct syscall_args {
 				     UPT_SYSCALL_ARG5(r),	 \
 				     UPT_SYSCALL_ARG6(r) } } )
 
+extern unsigned long host_fp_size;
+
 struct uml_pt_regs {
 	unsigned long gp[MAX_REG_NR];
-	unsigned long fp[MAX_FP_NR];
 	struct faultinfo faultinfo;
 	long syscall;
 	int is_user;
+
+	/* Dynamically sized FP registers (holds an XSTATE) */
+	unsigned long fp[];
 };
 
 #define EMPTY_UML_PT_REGS { }
@@ -72,4 +76,6 @@ struct uml_pt_regs {
 
 extern int user_context(unsigned long sp);
 
+extern int arch_init_registers(int pid);
+
 #endif /* __SYSDEP_X86_PTRACE_H */
diff --git a/arch/x86/um/shared/sysdep/ptrace_32.h b/arch/x86/um/shared/sysdep/ptrace_32.h
index 0c4989842fbe..2392470cac4d 100644
--- a/arch/x86/um/shared/sysdep/ptrace_32.h
+++ b/arch/x86/um/shared/sysdep/ptrace_32.h
@@ -6,8 +6,6 @@
 #ifndef __SYSDEP_I386_PTRACE_H
 #define __SYSDEP_I386_PTRACE_H
 
-#define MAX_FP_NR HOST_FPX_SIZE
-
 #define UPT_SYSCALL_ARG1(r) UPT_BX(r)
 #define UPT_SYSCALL_ARG2(r) UPT_CX(r)
 #define UPT_SYSCALL_ARG3(r) UPT_DX(r)
@@ -15,6 +13,4 @@
 #define UPT_SYSCALL_ARG5(r) UPT_DI(r)
 #define UPT_SYSCALL_ARG6(r) UPT_BP(r)
 
-extern void arch_init_registers(int pid);
-
 #endif
diff --git a/arch/x86/um/shared/sysdep/ptrace_64.h b/arch/x86/um/shared/sysdep/ptrace_64.h
index 0dc223aa1c2d..e73573ac871f 100644
--- a/arch/x86/um/shared/sysdep/ptrace_64.h
+++ b/arch/x86/um/shared/sysdep/ptrace_64.h
@@ -8,8 +8,6 @@
 #ifndef __SYSDEP_X86_64_PTRACE_H
 #define __SYSDEP_X86_64_PTRACE_H
 
-#define MAX_FP_NR HOST_FP_SIZE
-
 #define REGS_R8(r) ((r)[HOST_R8])
 #define REGS_R9(r) ((r)[HOST_R9])
 #define REGS_R10(r) ((r)[HOST_R10])
@@ -57,6 +55,4 @@
 #define UPT_SYSCALL_ARG5(r) UPT_R8(r)
 #define UPT_SYSCALL_ARG6(r) UPT_R9(r)
 
-extern void arch_init_registers(int pid);
-
 #endif
diff --git a/arch/x86/um/shared/sysdep/ptrace_user.h b/arch/x86/um/shared/sysdep/ptrace_user.h
index 1d1a824fa652..98da23120538 100644
--- a/arch/x86/um/shared/sysdep/ptrace_user.h
+++ b/arch/x86/um/shared/sysdep/ptrace_user.h
@@ -11,12 +11,6 @@
 #define REGS_IP_INDEX HOST_IP
 #define REGS_SP_INDEX HOST_SP
 
-#ifdef __i386__
-#define FP_SIZE ((HOST_FPX_SIZE > HOST_FP_SIZE) ? HOST_FPX_SIZE : HOST_FP_SIZE)
-#else
-#define FP_SIZE HOST_FP_SIZE
-#endif
-
 /*
  * glibc before 2.27 does not include PTRACE_SYSEMU_SINGLESTEP in its enum,
  * ensure we have a definition by (re-)defining it here.