Merge branch 'linus' into x86/x2apic

2 files changed, 17 insertions, 12 deletions

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index cb3856a18c85..20af4c79579a 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -36,6 +36,11 @@
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
+#define FIX_EFLAGS      (X86_EFLAGS_AC | X86_EFLAGS_OF | \
+                         X86_EFLAGS_DF | X86_EFLAGS_TF | X86_EFLAGS_SF | \
+                         X86_EFLAGS_ZF | X86_EFLAGS_AF | X86_EFLAGS_PF | \
+                         X86_EFLAGS_CF)
+
 asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
 void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
 
@@ -248,7 +253,7 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
         regs->ss |= 3;
 
         err |= __get_user(tmpflags, &sc->flags);
-        regs->flags = (regs->flags & ~0x40DD5) | (tmpflags & 0x40DD5);
+        regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS);
         /* disable syscall checks */
         regs->orig_ax = -1;
 
@@ -515,7 +520,6 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
                         compat_sigset_t *set, struct pt_regs *regs)
 {
         struct rt_sigframe __user *frame;
-        struct exec_domain *ed = current_thread_info()->exec_domain;
         void __user *restorer;
         int err = 0;
 
@@ -538,8 +542,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
         if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
                 goto give_sigsegv;
 
-        err |= __put_user((ed && ed->signal_invmap && sig < 32
-                           ? ed->signal_invmap[sig] : sig), &frame->sig);
+        err |= __put_user(sig, &frame->sig);
         err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo);
         err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc);
         err |= copy_siginfo_to_user32(&frame->info, info);
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 20371d0635e4..23d146ce676b 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -37,6 +37,11 @@
         movq    %rax,R8(%rsp)
         .endm
 
+        /*
+         * Reload arg registers from stack in case ptrace changed them.
+         * We don't reload %eax because syscall_trace_enter() returned
+         * the value it wants us to use in the table lookup.
+         */
         .macro LOAD_ARGS32 offset
         movl \offset(%rsp),%r11d
         movl \offset+8(%rsp),%r10d
@@ -46,7 +51,6 @@
         movl \offset+48(%rsp),%edx
         movl \offset+56(%rsp),%esi
         movl \offset+64(%rsp),%edi
-        movl \offset+72(%rsp),%eax
         .endm
         
         .macro CFI_STARTPROC32 simple
@@ -137,13 +141,12 @@ ENTRY(ia32_sysenter_target)
         .previous       
         GET_THREAD_INFO(%r10)
         orl    $TS_COMPAT,TI_status(%r10)
-        testl  $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
-                 TI_flags(%r10)
+        testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
         CFI_REMEMBER_STATE
         jnz  sysenter_tracesys
-sysenter_do_call:       
         cmpl    $(IA32_NR_syscalls-1),%eax
         ja      ia32_badsys
+sysenter_do_call:
         IA32_ARG_FIXUP 1
         call    *ia32_sys_call_table(,%rax,8)
         movq    %rax,RAX-ARGOFFSET(%rsp)
@@ -242,8 +245,7 @@ ENTRY(ia32_cstar_target)
         .previous       
         GET_THREAD_INFO(%r10)
         orl   $TS_COMPAT,TI_status(%r10)
-        testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
-                TI_flags(%r10)
+        testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
         CFI_REMEMBER_STATE
         jnz   cstar_tracesys
 cstar_do_call:  
@@ -321,6 +323,7 @@ ENTRY(ia32_syscall)
         /*CFI_REL_OFFSET        rflags,EFLAGS-RIP*/
         /*CFI_REL_OFFSET        cs,CS-RIP*/
         CFI_REL_OFFSET  rip,RIP-RIP
+        PARAVIRT_ADJUST_EXCEPTION_FRAME
         SWAPGS
         /*
          * No need to follow this irqs on/off section: the syscall
@@ -336,8 +339,7 @@ ENTRY(ia32_syscall)
         SAVE_ARGS 0,0,1
         GET_THREAD_INFO(%r10)
         orl   $TS_COMPAT,TI_status(%r10)
-        testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP), \
-                TI_flags(%r10)
+        testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r10)
         jnz ia32_tracesys
 ia32_do_syscall:        
         cmpl $(IA32_NR_syscalls-1),%eax