Merge branch 'for-um' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal into for-3.5

17 files changed, 174 insertions, 299 deletions

diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h
index 200c4ab1240c..c04e5ab68f56 100644
--- a/arch/um/include/asm/thread_info.h
+++ b/arch/um/include/asm/thread_info.h
@@ -71,6 +71,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_MEMDIE              5       /* is terminating due to OOM killer */
 #define TIF_SYSCALL_AUDIT       6
 #define TIF_RESTORE_SIGMASK     7
+#define TIF_NOTIFY_RESUME       8
 
 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
@@ -78,6 +79,5 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
 #define _TIF_MEMDIE             (1 << TIF_MEMDIE)
 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
-#define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
 
 #endif
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 2b73dedb44ca..3a2235e0abc3 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -18,6 +18,7 @@
 #include <linux/seq_file.h>
 #include <linux/tick.h>
 #include <linux/threads.h>
+#include <linux/tracehook.h>
 #include <asm/current.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
@@ -114,8 +115,13 @@ void interrupt_end(void)
 {
         if (need_resched())
                 schedule();
-        if (test_tsk_thread_flag(current, TIF_SIGPENDING))
+        if (test_thread_flag(TIF_SIGPENDING))
                 do_signal();
+        if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) {
+                tracehook_notify_resume(&current->thread.regs);
+                if (current->replacement_session_keyring)
+                        key_replace_session_keyring();
+        }
 }
 
 void exit_thread(void)
@@ -190,7 +196,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
         if (current->thread.forking) {
                 memcpy(&p->thread.regs.regs, &regs->regs,
                        sizeof(p->thread.regs.regs));
-                REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.gp, 0);
+                UPT_SET_SYSCALL_RETURN(&p->thread.regs.regs, 0);
                 if (sp != 0)
                         REGS_SP(p->thread.regs.regs.gp) = sp;
 
diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c
index fb12f4c5e649..187118fbe1bc 100644
--- a/arch/um/kernel/signal.c
+++ b/arch/um/kernel/signal.c
@@ -29,9 +29,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr,
         unsigned long sp;
         int err;
 
-        /* Always make any pending restarted system calls return -EINTR */
-        current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
         /* Did we come from a system call? */
         if (PT_REGS_SYSCALL_NR(regs) >= 0) {
                 /* If so, check system call restarting.. */
@@ -77,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs)
 {
         struct k_sigaction ka_copy;
         siginfo_t info;
-        sigset_t *oldset;
         int sig, handled_sig = 0;
 
-        if (test_thread_flag(TIF_RESTORE_SIGMASK))
-                oldset = &current->saved_sigmask;
-        else
-                oldset = &current->blocked;
-
         while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
+                sigset_t *oldset;
+                if (test_thread_flag(TIF_RESTORE_SIGMASK))
+                        oldset = &current->saved_sigmask;
+                else
+                        oldset = &current->blocked;
                 handled_sig = 1;
                 /* Whee!  Actually deliver the signal.  */
                 if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {
diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c
index f5173e1ec3ac..05fbeb480e0b 100644
--- a/arch/um/kernel/skas/syscall.c
+++ b/arch/um/kernel/skas/syscall.c
@@ -34,7 +34,7 @@ void handle_syscall(struct uml_pt_regs *r)
                 result = -ENOSYS;
         else result = EXECUTE_SYSCALL(syscall, regs);
 
-        REGS_SET_SYSCALL_RETURN(r->gp, result);
+        UPT_SET_SYSCALL_RETURN(r, result);
 
         syscall_trace(r, 1);
 }
diff --git a/arch/x86/um/asm/elf.h b/arch/x86/um/asm/elf.h
index f3b0633b69a1..0e07adc8cbe4 100644
--- a/arch/x86/um/asm/elf.h
+++ b/arch/x86/um/asm/elf.h
@@ -34,25 +34,25 @@
 #define ELF_ARCH        EM_386
 
 #define ELF_PLAT_INIT(regs, load_addr) do { \
-        PT_REGS_EBX(regs) = 0; \
-        PT_REGS_ECX(regs) = 0; \
-        PT_REGS_EDX(regs) = 0; \
-        PT_REGS_ESI(regs) = 0; \
-        PT_REGS_EDI(regs) = 0; \
-        PT_REGS_EBP(regs) = 0; \
-        PT_REGS_EAX(regs) = 0; \
+        PT_REGS_BX(regs) = 0; \
+        PT_REGS_CX(regs) = 0; \
+        PT_REGS_DX(regs) = 0; \
+        PT_REGS_SI(regs) = 0; \
+        PT_REGS_DI(regs) = 0; \
+        PT_REGS_BP(regs) = 0; \
+        PT_REGS_AX(regs) = 0; \
 } while (0)
 
 /* Shamelessly stolen from include/asm-i386/elf.h */
 
 #define ELF_CORE_COPY_REGS(pr_reg, regs) do {   \
-        pr_reg[0] = PT_REGS_EBX(regs);          \
-        pr_reg[1] = PT_REGS_ECX(regs);          \
-        pr_reg[2] = PT_REGS_EDX(regs);          \
-        pr_reg[3] = PT_REGS_ESI(regs);          \
-        pr_reg[4] = PT_REGS_EDI(regs);          \
-        pr_reg[5] = PT_REGS_EBP(regs);          \
-        pr_reg[6] = PT_REGS_EAX(regs);          \
+        pr_reg[0] = PT_REGS_BX(regs);           \
+        pr_reg[1] = PT_REGS_CX(regs);           \
+        pr_reg[2] = PT_REGS_DX(regs);           \
+        pr_reg[3] = PT_REGS_SI(regs);           \
+        pr_reg[4] = PT_REGS_DI(regs);           \
+        pr_reg[5] = PT_REGS_BP(regs);           \
+        pr_reg[6] = PT_REGS_AX(regs);           \
         pr_reg[7] = PT_REGS_DS(regs);           \
         pr_reg[8] = PT_REGS_ES(regs);           \
         /* fake once used fs and gs selectors? */       \
@@ -130,13 +130,13 @@ do {								\
 #define ELF_ARCH        EM_X86_64
 
 #define ELF_PLAT_INIT(regs, load_addr)    do { \
-        PT_REGS_RBX(regs) = 0; \
-        PT_REGS_RCX(regs) = 0; \
-        PT_REGS_RDX(regs) = 0; \
-        PT_REGS_RSI(regs) = 0; \
-        PT_REGS_RDI(regs) = 0; \
-        PT_REGS_RBP(regs) = 0; \
-        PT_REGS_RAX(regs) = 0; \
+        PT_REGS_BX(regs) = 0; \
+        PT_REGS_CX(regs) = 0; \
+        PT_REGS_DX(regs) = 0; \
+        PT_REGS_SI(regs) = 0; \
+        PT_REGS_DI(regs) = 0; \
+        PT_REGS_BP(regs) = 0; \
+        PT_REGS_AX(regs) = 0; \
         PT_REGS_R8(regs) = 0; \
         PT_REGS_R9(regs) = 0; \
         PT_REGS_R10(regs) = 0; \
diff --git a/arch/x86/um/asm/ptrace.h b/arch/x86/um/asm/ptrace.h
index c8aca8c501b0..950dfb7b8417 100644
--- a/arch/x86/um/asm/ptrace.h
+++ b/arch/x86/um/asm/ptrace.h
@@ -1,5 +1,39 @@
+#ifndef __UM_X86_PTRACE_H
+#define __UM_X86_PTRACE_H
+
 #ifdef CONFIG_X86_32
 # include "ptrace_32.h"
 #else
 # include "ptrace_64.h"
 #endif
+
+#define PT_REGS_AX(r) UPT_AX(&(r)->regs)
+#define PT_REGS_BX(r) UPT_BX(&(r)->regs)
+#define PT_REGS_CX(r) UPT_CX(&(r)->regs)
+#define PT_REGS_DX(r) UPT_DX(&(r)->regs)
+
+#define PT_REGS_SI(r) UPT_SI(&(r)->regs)
+#define PT_REGS_DI(r) UPT_DI(&(r)->regs)
+#define PT_REGS_BP(r) UPT_BP(&(r)->regs)
+#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
+
+#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
+#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
+#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
+#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
+
+#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_AX(r)
+#define PT_REGS_SYSCALL_RET(r) PT_REGS_AX(r)
+
+#define PT_FIX_EXEC_STACK(sp) do ; while(0)
+
+#define profile_pc(regs) PT_REGS_IP(regs)
+
+#define UPT_RESTART_SYSCALL(r) (UPT_IP(r) -= 2)
+#define UPT_SET_SYSCALL_RETURN(r, res) (UPT_AX(r) = (res))
+
+static inline long regs_return_value(struct uml_pt_regs *regs)
+{
+        return UPT_AX(regs);
+}
+#endif /* __UM_X86_PTRACE_H */
diff --git a/arch/x86/um/asm/ptrace_32.h b/arch/x86/um/asm/ptrace_32.h
index 5d2a59112537..2cf225351b65 100644
--- a/arch/x86/um/asm/ptrace_32.h
+++ b/arch/x86/um/asm/ptrace_32.h
@@ -11,29 +11,6 @@
 #include "linux/compiler.h"
 #include "asm/ptrace-generic.h"
 
-#define PT_REGS_EAX(r) UPT_EAX(&(r)->regs)
-#define PT_REGS_EBX(r) UPT_EBX(&(r)->regs)
-#define PT_REGS_ECX(r) UPT_ECX(&(r)->regs)
-#define PT_REGS_EDX(r) UPT_EDX(&(r)->regs)
-#define PT_REGS_ESI(r) UPT_ESI(&(r)->regs)
-#define PT_REGS_EDI(r) UPT_EDI(&(r)->regs)
-#define PT_REGS_EBP(r) UPT_EBP(&(r)->regs)
-
-#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
-#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
-#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
-#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
-#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
-#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
-
-#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
-
-#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_EAX(r)
-#define PT_REGS_SYSCALL_RET(r) PT_REGS_EAX(r)
-#define PT_FIX_EXEC_STACK(sp) do ; while(0)
-
-#define profile_pc(regs) PT_REGS_IP(regs)
-
 #define user_mode(r) UPT_IS_USER(&(r)->regs)
 
 /*
diff --git a/arch/x86/um/asm/ptrace_64.h b/arch/x86/um/asm/ptrace_64.h
index 706a0d80545c..ea7bff394320 100644
--- a/arch/x86/um/asm/ptrace_64.h
+++ b/arch/x86/um/asm/ptrace_64.h
@@ -15,13 +15,6 @@
 
 #define HOST_AUDIT_ARCH AUDIT_ARCH_X86_64
 
-#define PT_REGS_RBX(r) UPT_RBX(&(r)->regs)
-#define PT_REGS_RCX(r) UPT_RCX(&(r)->regs)
-#define PT_REGS_RDX(r) UPT_RDX(&(r)->regs)
-#define PT_REGS_RSI(r) UPT_RSI(&(r)->regs)
-#define PT_REGS_RDI(r) UPT_RDI(&(r)->regs)
-#define PT_REGS_RBP(r) UPT_RBP(&(r)->regs)
-#define PT_REGS_RAX(r) UPT_RAX(&(r)->regs)
 #define PT_REGS_R8(r) UPT_R8(&(r)->regs)
 #define PT_REGS_R9(r) UPT_R9(&(r)->regs)
 #define PT_REGS_R10(r) UPT_R10(&(r)->regs)
@@ -31,27 +24,8 @@
 #define PT_REGS_R14(r) UPT_R14(&(r)->regs)
 #define PT_REGS_R15(r) UPT_R15(&(r)->regs)
 
-#define PT_REGS_FS(r) UPT_FS(&(r)->regs)
-#define PT_REGS_GS(r) UPT_GS(&(r)->regs)
-#define PT_REGS_DS(r) UPT_DS(&(r)->regs)
-#define PT_REGS_ES(r) UPT_ES(&(r)->regs)
-#define PT_REGS_SS(r) UPT_SS(&(r)->regs)
-#define PT_REGS_CS(r) UPT_CS(&(r)->regs)
-
-#define PT_REGS_ORIG_RAX(r) UPT_ORIG_RAX(&(r)->regs)
-#define PT_REGS_RIP(r) UPT_IP(&(r)->regs)
-#define PT_REGS_SP(r) UPT_SP(&(r)->regs)
-
-#define PT_REGS_EFLAGS(r) UPT_EFLAGS(&(r)->regs)
-
 /* XXX */
 #define user_mode(r) UPT_IS_USER(&(r)->regs)
-#define PT_REGS_ORIG_SYSCALL(r) PT_REGS_RAX(r)
-#define PT_REGS_SYSCALL_RET(r) PT_REGS_RAX(r)
-
-#define PT_FIX_EXEC_STACK(sp) do ; while(0)
-
-#define profile_pc(regs) PT_REGS_IP(regs)
 
 struct user_desc;
 
diff --git a/arch/x86/um/shared/sysdep/ptrace.h b/arch/x86/um/shared/sysdep/ptrace.h
index 2bbe1ec2d96a..6ce2d76eb908 100644
--- a/arch/x86/um/shared/sysdep/ptrace.h
+++ b/arch/x86/um/shared/sysdep/ptrace.h
@@ -1,15 +1,74 @@
 #ifndef __SYSDEP_X86_PTRACE_H
 #define __SYSDEP_X86_PTRACE_H
 
+#include <generated/user_constants.h>
+#include "sysdep/faultinfo.h"
+
+#define MAX_REG_OFFSET (UM_FRAME_SIZE)
+#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
+
+#define REGS_IP(r) ((r)[HOST_IP])
+#define REGS_SP(r) ((r)[HOST_SP])
+#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
+#define REGS_AX(r) ((r)[HOST_AX])
+#define REGS_BX(r) ((r)[HOST_BX])
+#define REGS_CX(r) ((r)[HOST_CX])
+#define REGS_DX(r) ((r)[HOST_DX])
+#define REGS_SI(r) ((r)[HOST_SI])
+#define REGS_DI(r) ((r)[HOST_DI])
+#define REGS_BP(r) ((r)[HOST_BP])
+#define REGS_CS(r) ((r)[HOST_CS])
+#define REGS_SS(r) ((r)[HOST_SS])
+#define REGS_DS(r) ((r)[HOST_DS])
+#define REGS_ES(r) ((r)[HOST_ES])
+
+#define UPT_IP(r) REGS_IP((r)->gp)
+#define UPT_SP(r) REGS_SP((r)->gp)
+#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
+#define UPT_AX(r) REGS_AX((r)->gp)
+#define UPT_BX(r) REGS_BX((r)->gp)
+#define UPT_CX(r) REGS_CX((r)->gp)
+#define UPT_DX(r) REGS_DX((r)->gp)
+#define UPT_SI(r) REGS_SI((r)->gp)
+#define UPT_DI(r) REGS_DI((r)->gp)
+#define UPT_BP(r) REGS_BP((r)->gp)
+#define UPT_CS(r) REGS_CS((r)->gp)
+#define UPT_SS(r) REGS_SS((r)->gp)
+#define UPT_DS(r) REGS_DS((r)->gp)
+#define UPT_ES(r) REGS_ES((r)->gp)
+
 #ifdef __i386__
 #include "ptrace_32.h"
 #else
 #include "ptrace_64.h"
 #endif
 
-static inline long regs_return_value(struct uml_pt_regs *regs)
-{
-        return UPT_SYSCALL_RET(regs);
-}
+struct syscall_args {
+        unsigned long args[6];
+};
+
+#define SYSCALL_ARGS(r) ((struct syscall_args) \
+                         { .args = { UPT_SYSCALL_ARG1(r),        \
+                                     UPT_SYSCALL_ARG2(r),        \
+                                     UPT_SYSCALL_ARG3(r),        \
+                                     UPT_SYSCALL_ARG4(r),        \
+                                     UPT_SYSCALL_ARG5(r),        \
+                                     UPT_SYSCALL_ARG6(r) } } )
+
+struct uml_pt_regs {
+        unsigned long gp[MAX_REG_NR];
+        unsigned long fp[MAX_FP_NR];
+        struct faultinfo faultinfo;
+        long syscall;
+        int is_user;
+};
+
+#define EMPTY_UML_PT_REGS { }
+
+#define UPT_SYSCALL_NR(r) ((r)->syscall)
+#define UPT_FAULTINFO(r) (&(r)->faultinfo)
+#define UPT_IS_USER(r) ((r)->is_user)
+
+extern int user_context(unsigned long sp);
 
 #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 befd1df32ed0..b94a108de1dc 100644
--- a/arch/x86/um/shared/sysdep/ptrace_32.h
+++ b/arch/x86/um/shared/sysdep/ptrace_32.h
@@ -6,11 +6,7 @@
 #ifndef __SYSDEP_I386_PTRACE_H
 #define __SYSDEP_I386_PTRACE_H
 
-#include <generated/user_constants.h>
-#include "sysdep/faultinfo.h"
-
-#define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long))
-#define MAX_REG_OFFSET (UM_FRAME_SIZE)
+#define MAX_FP_NR HOST_FPX_SIZE
 
 static inline void update_debugregs(int seq) {}
 
@@ -24,90 +20,16 @@ void set_using_sysemu(int value);
 int get_using_sysemu(void);
 extern int sysemu_supported;
 
-#define REGS_IP(r) ((r)[HOST_IP])
-#define REGS_SP(r) ((r)[HOST_SP])
-#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
-#define REGS_EAX(r) ((r)[HOST_AX])
-#define REGS_EBX(r) ((r)[HOST_BX])
-#define REGS_ECX(r) ((r)[HOST_CX])
-#define REGS_EDX(r) ((r)[HOST_DX])
-#define REGS_ESI(r) ((r)[HOST_SI])
-#define REGS_EDI(r) ((r)[HOST_DI])
-#define REGS_EBP(r) ((r)[HOST_BP])
-#define REGS_CS(r) ((r)[HOST_CS])
-#define REGS_SS(r) ((r)[HOST_SS])
-#define REGS_DS(r) ((r)[HOST_DS])
-#define REGS_ES(r) ((r)[HOST_ES])
-#define REGS_FS(r) ((r)[HOST_FS])
-#define REGS_GS(r) ((r)[HOST_GS])
-
-#define REGS_SET_SYSCALL_RETURN(r, res) REGS_EAX(r) = (res)
-
-#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
-
 #ifndef PTRACE_SYSEMU_SINGLESTEP
 #define PTRACE_SYSEMU_SINGLESTEP 32
 #endif
 
-struct uml_pt_regs {
-        unsigned long gp[MAX_REG_NR];
-        unsigned long fp[HOST_FPX_SIZE];
-        struct faultinfo faultinfo;
-        long syscall;
-        int is_user;
-};
-
-#define EMPTY_UML_PT_REGS { }
-
-#define UPT_IP(r) REGS_IP((r)->gp)
-#define UPT_SP(r) REGS_SP((r)->gp)
-#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
-#define UPT_EAX(r) REGS_EAX((r)->gp)
-#define UPT_EBX(r) REGS_EBX((r)->gp)
-#define UPT_ECX(r) REGS_ECX((r)->gp)
-#define UPT_EDX(r) REGS_EDX((r)->gp)
-#define UPT_ESI(r) REGS_ESI((r)->gp)
-#define UPT_EDI(r) REGS_EDI((r)->gp)
-#define UPT_EBP(r) REGS_EBP((r)->gp)
-#define UPT_ORIG_EAX(r) ((r)->syscall)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_SS(r) REGS_SS((r)->gp)
-#define UPT_DS(r) REGS_DS((r)->gp)
-#define UPT_ES(r) REGS_ES((r)->gp)
-#define UPT_FS(r) REGS_FS((r)->gp)
-#define UPT_GS(r) REGS_GS((r)->gp)
-
-#define UPT_SYSCALL_ARG1(r) UPT_EBX(r)
-#define UPT_SYSCALL_ARG2(r) UPT_ECX(r)
-#define UPT_SYSCALL_ARG3(r) UPT_EDX(r)
-#define UPT_SYSCALL_ARG4(r) UPT_ESI(r)
-#define UPT_SYSCALL_ARG5(r) UPT_EDI(r)
-#define UPT_SYSCALL_ARG6(r) UPT_EBP(r)
-
-extern int user_context(unsigned long sp);
-
-#define UPT_IS_USER(r) ((r)->is_user)
-
-struct syscall_args {
-        unsigned long args[6];
-};
-
-#define SYSCALL_ARGS(r) ((struct syscall_args) \
-                         { .args = { UPT_SYSCALL_ARG1(r),       \
-                                     UPT_SYSCALL_ARG2(r),       \
-                                     UPT_SYSCALL_ARG3(r),       \
-                                     UPT_SYSCALL_ARG4(r),       \
-                                     UPT_SYSCALL_ARG5(r),       \
-                                     UPT_SYSCALL_ARG6(r) } } )
-
-#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)
-
-#define UPT_ORIG_SYSCALL(r) UPT_EAX(r)
-#define UPT_SYSCALL_NR(r) UPT_ORIG_EAX(r)
-#define UPT_SYSCALL_RET(r) UPT_EAX(r)
-
-#define UPT_FAULTINFO(r) (&(r)->faultinfo)
+#define UPT_SYSCALL_ARG1(r) UPT_BX(r)
+#define UPT_SYSCALL_ARG2(r) UPT_CX(r)
+#define UPT_SYSCALL_ARG3(r) UPT_DX(r)
+#define UPT_SYSCALL_ARG4(r) UPT_SI(r)
+#define UPT_SYSCALL_ARG5(r) UPT_DI(r)
+#define UPT_SYSCALL_ARG6(r) UPT_BP(r)
 
 extern void arch_init_registers(int pid);
 
diff --git a/arch/x86/um/shared/sysdep/ptrace_64.h b/arch/x86/um/shared/sysdep/ptrace_64.h
index 031edc53ac57..919789f1071e 100644
--- a/arch/x86/um/shared/sysdep/ptrace_64.h
+++ b/arch/x86/um/shared/sysdep/ptrace_64.h
@@ -8,22 +8,8 @@
 #ifndef __SYSDEP_X86_64_PTRACE_H
 #define __SYSDEP_X86_64_PTRACE_H
 
-#include <generated/user_constants.h>
-#include "sysdep/faultinfo.h"
+#define MAX_FP_NR HOST_FP_SIZE
 
-#define MAX_REG_OFFSET (UM_FRAME_SIZE)
-#define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long))
-
-#define REGS_IP(r) ((r)[HOST_IP])
-#define REGS_SP(r) ((r)[HOST_SP])
-
-#define REGS_RBX(r) ((r)[HOST_BX])
-#define REGS_RCX(r) ((r)[HOST_CX])
-#define REGS_RDX(r) ((r)[HOST_DX])
-#define REGS_RSI(r) ((r)[HOST_SI])
-#define REGS_RDI(r) ((r)[HOST_DI])
-#define REGS_RBP(r) ((r)[HOST_BP])
-#define REGS_RAX(r) ((r)[HOST_AX])
 #define REGS_R8(r) ((r)[HOST_R8])
 #define REGS_R9(r) ((r)[HOST_R9])
 #define REGS_R10(r) ((r)[HOST_R10])
@@ -32,9 +18,6 @@
 #define REGS_R13(r) ((r)[HOST_R13])
 #define REGS_R14(r) ((r)[HOST_R14])
 #define REGS_R15(r) ((r)[HOST_R15])
-#define REGS_CS(r) ((r)[HOST_CS])
-#define REGS_EFLAGS(r) ((r)[HOST_EFLAGS])
-#define REGS_SS(r) ((r)[HOST_SS])
 
 #define HOST_FS_BASE 21
 #define HOST_GS_BASE 22
@@ -58,45 +41,6 @@
 #define GS (HOST_GS * sizeof(long))
 #endif
 
-#define REGS_FS_BASE(r) ((r)[HOST_FS_BASE])
-#define REGS_GS_BASE(r) ((r)[HOST_GS_BASE])
-#define REGS_DS(r) ((r)[HOST_DS])
-#define REGS_ES(r) ((r)[HOST_ES])
-#define REGS_FS(r) ((r)[HOST_FS])
-#define REGS_GS(r) ((r)[HOST_GS])
-
-#define REGS_ORIG_RAX(r) ((r)[HOST_ORIG_AX])
-
-#define REGS_SET_SYSCALL_RETURN(r, res) REGS_RAX(r) = (res)
-
-#define IP_RESTART_SYSCALL(ip) ((ip) -= 2)
-#define REGS_RESTART_SYSCALL(r) IP_RESTART_SYSCALL(REGS_IP(r))
-
-#define REGS_FAULT_ADDR(r) ((r)->fault_addr)
-
-#define REGS_FAULT_WRITE(r) FAULT_WRITE((r)->fault_type)
-
-#define REGS_TRAP(r) ((r)->trap_type)
-
-#define REGS_ERR(r) ((r)->fault_type)
-
-struct uml_pt_regs {
-        unsigned long gp[MAX_REG_NR];
-        unsigned long fp[HOST_FP_SIZE];
-        struct faultinfo faultinfo;
-        long syscall;
-        int is_user;
-};
-
-#define EMPTY_UML_PT_REGS { }
-
-#define UPT_RBX(r) REGS_RBX((r)->gp)
-#define UPT_RCX(r) REGS_RCX((r)->gp)
-#define UPT_RDX(r) REGS_RDX((r)->gp)
-#define UPT_RSI(r) REGS_RSI((r)->gp)
-#define UPT_RDI(r) REGS_RDI((r)->gp)
-#define UPT_RBP(r) REGS_RBP((r)->gp)
-#define UPT_RAX(r) REGS_RAX((r)->gp)
 #define UPT_R8(r) REGS_R8((r)->gp)
 #define UPT_R9(r) REGS_R9((r)->gp)
 #define UPT_R10(r) REGS_R10((r)->gp)
@@ -105,51 +49,14 @@ struct uml_pt_regs {
 #define UPT_R13(r) REGS_R13((r)->gp)
 #define UPT_R14(r) REGS_R14((r)->gp)
 #define UPT_R15(r) REGS_R15((r)->gp)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_FS_BASE(r) REGS_FS_BASE((r)->gp)
-#define UPT_FS(r) REGS_FS((r)->gp)
-#define UPT_GS_BASE(r) REGS_GS_BASE((r)->gp)
-#define UPT_GS(r) REGS_GS((r)->gp)
-#define UPT_DS(r) REGS_DS((r)->gp)
-#define UPT_ES(r) REGS_ES((r)->gp)
-#define UPT_CS(r) REGS_CS((r)->gp)
-#define UPT_SS(r) REGS_SS((r)->gp)
-#define UPT_ORIG_RAX(r) REGS_ORIG_RAX((r)->gp)
-
-#define UPT_IP(r) REGS_IP((r)->gp)
-#define UPT_SP(r) REGS_SP((r)->gp)
-
-#define UPT_EFLAGS(r) REGS_EFLAGS((r)->gp)
-#define UPT_SYSCALL_NR(r) ((r)->syscall)
-#define UPT_SYSCALL_RET(r) UPT_RAX(r)
-
-extern int user_context(unsigned long sp);
 
-#define UPT_IS_USER(r) ((r)->is_user)
-
-#define UPT_SYSCALL_ARG1(r) UPT_RDI(r)
-#define UPT_SYSCALL_ARG2(r) UPT_RSI(r)
-#define UPT_SYSCALL_ARG3(r) UPT_RDX(r)
+#define UPT_SYSCALL_ARG1(r) UPT_DI(r)
+#define UPT_SYSCALL_ARG2(r) UPT_SI(r)
+#define UPT_SYSCALL_ARG3(r) UPT_DX(r)
 #define UPT_SYSCALL_ARG4(r) UPT_R10(r)
 #define UPT_SYSCALL_ARG5(r) UPT_R8(r)
 #define UPT_SYSCALL_ARG6(r) UPT_R9(r)
 
-struct syscall_args {
-        unsigned long args[6];
-};
-
-#define SYSCALL_ARGS(r) ((struct syscall_args) \
-                         { .args = { UPT_SYSCALL_ARG1(r),        \
-                                     UPT_SYSCALL_ARG2(r),        \
-                                     UPT_SYSCALL_ARG3(r),        \
-                                     UPT_SYSCALL_ARG4(r),        \
-                                     UPT_SYSCALL_ARG5(r),        \
-                                     UPT_SYSCALL_ARG6(r) } } )
-
-#define UPT_RESTART_SYSCALL(r) REGS_RESTART_SYSCALL((r)->gp)
-
-#define UPT_FAULTINFO(r) (&(r)->faultinfo)
-
 static inline void arch_init_registers(int pid)
 {
 }
diff --git a/arch/x86/um/signal.c b/arch/x86/um/signal.c
index 4883b9546016..bb0fb03b9f85 100644
--- a/arch/x86/um/signal.c
+++ b/arch/x86/um/signal.c
@@ -156,6 +156,9 @@ static int copy_sc_from_user(struct pt_regs *regs,
         struct sigcontext sc;
         int err, pid;
 
+        /* Always make any pending restarted system calls return -EINTR */
+        current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
         err = copy_from_user(&sc, from, sizeof(sc));
         if (err)
                 return err;
@@ -410,9 +413,9 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
 
         PT_REGS_SP(regs) = (unsigned long) frame;
         PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
-        PT_REGS_EAX(regs) = (unsigned long) sig;
-        PT_REGS_EDX(regs) = (unsigned long) 0;
-        PT_REGS_ECX(regs) = (unsigned long) 0;
+        PT_REGS_AX(regs) = (unsigned long) sig;
+        PT_REGS_DX(regs) = (unsigned long) 0;
+        PT_REGS_CX(regs) = (unsigned long) 0;
 
         if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
                 ptrace_notify(SIGTRAP);
@@ -460,9 +463,9 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
 
         PT_REGS_SP(regs) = (unsigned long) frame;
         PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
-        PT_REGS_EAX(regs) = (unsigned long) sig;
-        PT_REGS_EDX(regs) = (unsigned long) &frame->info;
-        PT_REGS_ECX(regs) = (unsigned long) &frame->uc;
+        PT_REGS_AX(regs) = (unsigned long) sig;
+        PT_REGS_DX(regs) = (unsigned long) &frame->info;
+        PT_REGS_CX(regs) = (unsigned long) &frame->uc;
 
         if ((current->ptrace & PT_DTRACE) && (current->ptrace & PT_PTRACED))
                 ptrace_notify(SIGTRAP);
@@ -541,8 +544,8 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
                                set->sig[0]);
         err |= __put_user(&frame->fpstate, &frame->uc.uc_mcontext.fpstate);
         if (sizeof(*set) == 16) {
-                __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
-                __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
+                err |= __put_user(set->sig[0], &frame->uc.uc_sigmask.sig[0]);
+                err |= __put_user(set->sig[1], &frame->uc.uc_sigmask.sig[1]);
         }
         else
                 err |= __copy_to_user(&frame->uc.uc_sigmask, set,
@@ -570,17 +573,17 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
         }
 
         PT_REGS_SP(regs) = (unsigned long) frame;
-        PT_REGS_RDI(regs) = sig;
+        PT_REGS_DI(regs) = sig;
         /* In case the signal handler was declared without prototypes */
-        PT_REGS_RAX(regs) = 0;
+        PT_REGS_AX(regs) = 0;
 
         /*
          * This also works for non SA_SIGINFO handlers because they expect the
          * next argument after the signal number on the stack.
          */
-        PT_REGS_RSI(regs) = (unsigned long) &frame->info;
-        PT_REGS_RDX(regs) = (unsigned long) &frame->uc;
-        PT_REGS_RIP(regs) = (unsigned long) ka->sa.sa_handler;
+        PT_REGS_SI(regs) = (unsigned long) &frame->info;
+        PT_REGS_DX(regs) = (unsigned long) &frame->uc;
+        PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
  out:
         return err;
 }
diff --git a/arch/x86/um/sys_call_table_64.c b/arch/x86/um/sys_call_table_64.c
index 9924776f4265..170bd926a69c 100644
--- a/arch/x86/um/sys_call_table_64.c
+++ b/arch/x86/um/sys_call_table_64.c
@@ -31,7 +31,6 @@
 #define stub_fork sys_fork
 #define stub_vfork sys_vfork
 #define stub_execve sys_execve
-#define stub_rt_sigsuspend sys_rt_sigsuspend
 #define stub_sigaltstack sys_sigaltstack
 #define stub_rt_sigreturn sys_rt_sigreturn
 
diff --git a/arch/x86/um/syscalls_32.c b/arch/x86/um/syscalls_32.c
index 70ca357393b8..b853e8600b9d 100644
--- a/arch/x86/um/syscalls_32.c
+++ b/arch/x86/um/syscalls_32.c
@@ -44,10 +44,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act,
                 old_sigset_t mask;
                 if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
                     __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
-                    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer))
+                    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+                    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+                    __get_user(mask, &act->sa_mask))
                         return -EFAULT;
-                __get_user(new_ka.sa.sa_flags, &act->sa_flags);
-                __get_user(mask, &act->sa_mask);
                 siginitset(&new_ka.sa.sa_mask, mask);
         }
 
@@ -56,10 +56,10 @@ long sys_sigaction(int sig, const struct old_sigaction __user *act,
         if (!ret && oact) {
                 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
                     __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
-                    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer))
+                    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+                    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+                    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
                         return -EFAULT;
-                __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
-                __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
         }
 
         return ret;
diff --git a/arch/x86/um/sysrq_32.c b/arch/x86/um/sysrq_32.c
index 171b3e9dc867..2d5cc51e9bef 100644
--- a/arch/x86/um/sysrq_32.c
+++ b/arch/x86/um/sysrq_32.c
@@ -23,12 +23,10 @@ void show_regs(struct pt_regs *regs)
         printk(" EFLAGS: %08lx\n    %s\n", PT_REGS_EFLAGS(regs),
                print_tainted());
         printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
-                PT_REGS_EAX(regs), PT_REGS_EBX(regs), 
-               PT_REGS_ECX(regs), 
-               PT_REGS_EDX(regs));
+               PT_REGS_AX(regs), PT_REGS_BX(regs), 
+               PT_REGS_CX(regs), PT_REGS_DX(regs));
         printk("ESI: %08lx EDI: %08lx EBP: %08lx",
-               PT_REGS_ESI(regs), PT_REGS_EDI(regs), 
-               PT_REGS_EBP(regs));
+               PT_REGS_SI(regs), PT_REGS_DI(regs), PT_REGS_BP(regs));
         printk(" DS: %04lx ES: %04lx\n",
                0xffff & PT_REGS_DS(regs), 
                0xffff & PT_REGS_ES(regs));
diff --git a/arch/x86/um/sysrq_64.c b/arch/x86/um/sysrq_64.c
index e8913436d7dc..08258f179969 100644
--- a/arch/x86/um/sysrq_64.c
+++ b/arch/x86/um/sysrq_64.c
@@ -19,15 +19,15 @@ void __show_regs(struct pt_regs *regs)
         printk(KERN_INFO "Pid: %d, comm: %.20s %s %s\n", task_pid_nr(current),
                 current->comm, print_tainted(), init_utsname()->release);
         printk(KERN_INFO "RIP: %04lx:[<%016lx>]\n", PT_REGS_CS(regs) & 0xffff,
-               PT_REGS_RIP(regs));
+               PT_REGS_IP(regs));
         printk(KERN_INFO "RSP: %016lx  EFLAGS: %08lx\n", PT_REGS_SP(regs),
                PT_REGS_EFLAGS(regs));
         printk(KERN_INFO "RAX: %016lx RBX: %016lx RCX: %016lx\n",
-               PT_REGS_RAX(regs), PT_REGS_RBX(regs), PT_REGS_RCX(regs));
+               PT_REGS_AX(regs), PT_REGS_BX(regs), PT_REGS_CX(regs));
         printk(KERN_INFO "RDX: %016lx RSI: %016lx RDI: %016lx\n",
-               PT_REGS_RDX(regs), PT_REGS_RSI(regs), PT_REGS_RDI(regs));
+               PT_REGS_DX(regs), PT_REGS_SI(regs), PT_REGS_DI(regs));
         printk(KERN_INFO "RBP: %016lx R08: %016lx R09: %016lx\n",
-               PT_REGS_RBP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs));
+               PT_REGS_BP(regs), PT_REGS_R8(regs), PT_REGS_R9(regs));
         printk(KERN_INFO "R10: %016lx R11: %016lx R12: %016lx\n",
                PT_REGS_R10(regs), PT_REGS_R11(regs), PT_REGS_R12(regs));
         printk(KERN_INFO "R13: %016lx R14: %016lx R15: %016lx\n",
diff --git a/arch/x86/um/tls_32.c b/arch/x86/um/tls_32.c
index c6c7131e563b..baba84f8ecb8 100644
--- a/arch/x86/um/tls_32.c
+++ b/arch/x86/um/tls_32.c
@@ -219,7 +219,7 @@ int arch_copy_tls(struct task_struct *new)
         int idx, ret = -EFAULT;
 
         if (copy_from_user(&info,
-                           (void __user *) UPT_ESI(&new->thread.regs.regs),
+                           (void __user *) UPT_SI(&new->thread.regs.regs),
                            sizeof(info)))
                 goto out;