5 files changed, 28 insertions, 17 deletions

diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index ac7684324954..80e9b498c443 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -42,6 +42,8 @@
 
 int sis_apic_bug; /* not actually supported, dummy for compile */
 
+static int no_timer_check;
+
 static DEFINE_SPINLOCK(ioapic_lock);
 
 /*
@@ -1601,7 +1603,7 @@ static inline void check_timer(void)
                  * Ok, does IRQ0 through the IOAPIC work?
                  */
                 unmask_IO_APIC_irq(0);
-                if (timer_irq_works()) {
+                if (!no_timer_check && timer_irq_works()) {
                         nmi_watchdog_default();
                         if (nmi_watchdog == NMI_IO_APIC) {
                                 disable_8259A_irq(0);
@@ -1671,6 +1673,13 @@ static inline void check_timer(void)
         panic("IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter\n");
 }
 
+static int __init notimercheck(char *s)
+{
+        no_timer_check = 1;
+        return 1;
+}
+__setup("no_timer_check", notimercheck);
+
 /*
  *
  * IRQ's that are handled by the PIC in the MPS IOAPIC case.
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index 60dc9b98951d..525f6a128a27 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -380,7 +380,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
                         break;
 
                 switch (addr) { 
-                case 0 ... sizeof(struct user_regs_struct):
+                case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
                         tmp = getreg(child, addr);
                         break;
                 case offsetof(struct user, u_debugreg[0]):
@@ -425,7 +425,7 @@ asmlinkage long sys_ptrace(long request, long pid, unsigned long addr, long data
                         break;
 
                 switch (addr) { 
-                case 0 ... sizeof(struct user_regs_struct): 
+                case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
                         ret = putreg(child, addr, data);
                         break;
                 /* Disallows to set a breakpoint into the vsyscall */
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index b9fd0252c279..99f038ede23c 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -719,7 +719,6 @@ static void __init display_cacheinfo(struct cpuinfo_x86 *c)
         }
 }
 
-#ifdef CONFIG_SMP
 /*
  * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
  * Assumes number of cores is a power of two.
@@ -729,16 +728,24 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
 #ifdef CONFIG_SMP
         int cpu = smp_processor_id();
         int node = 0;
+        unsigned bits;
         if (c->x86_num_cores == 1)
                 return;
-        /* Fix up the APIC ID following the AMD specification. */
-        cpu_core_id[cpu] >>= hweight32(c->x86_num_cores - 1);
+
+        bits = 0;
+        while ((1 << bits) < c->x86_num_cores)
+                bits++;
+
+        /* Low order bits define the core id (index of core in socket) */
+        cpu_core_id[cpu] = phys_proc_id[cpu] & ((1 << bits)-1);
+        /* Convert the APIC ID into the socket ID */
+        phys_proc_id[cpu] >>= bits;
 
 #ifdef CONFIG_NUMA
         /* When an ACPI SRAT table is available use the mappings from SRAT
            instead. */
         if (acpi_numa <= 0) {
-                node = cpu_core_id[cpu];
+                node = phys_proc_id[cpu];
                 if (!node_online(node))
                         node = first_node(node_online_map);
                 cpu_to_node[cpu] = node;
@@ -746,18 +753,11 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
                 node = cpu_to_node[cpu];
         }
 #endif
-        /* For now: - better than BAD_APIC_ID at least*/
-        phys_proc_id[cpu] = cpu_core_id[cpu];
 
         printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n",
                         cpu, c->x86_num_cores, node, cpu_core_id[cpu]);
 #endif
 }
-#else
-static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
-{
-}
-#endif
 
 static int __init init_amd(struct cpuinfo_x86 *c)
 {
@@ -963,8 +963,7 @@ void __init early_identify_cpu(struct cpuinfo_x86 *c)
         }
 
 #ifdef CONFIG_SMP
-        phys_proc_id[smp_processor_id()] =
-        cpu_core_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
+        phys_proc_id[smp_processor_id()] = (cpuid_ebx(1) >> 24) & 0xff;
 #endif
 }
 
diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c
index d439ced150c6..3fdcdba0fec5 100644
--- a/arch/x86_64/kernel/signal.c
+++ b/arch/x86_64/kernel/signal.c
@@ -452,7 +452,9 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset)
                         regs->rip -= 2;
                 }
                 if (regs->rax == (unsigned long)-ERESTART_RESTARTBLOCK) {
-                        regs->rax = __NR_restart_syscall;
+                        regs->rax = test_thread_flag(TIF_IA32) ?
+                                        __NR_ia32_restart_syscall :
+                                        __NR_restart_syscall;
                         regs->rip -= 2;
                 }
         }
diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index 5abdee1e16a5..f1ec0f345941 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -94,6 +94,7 @@ int smp_threads_ready;
 
 cpumask_t cpu_sibling_map[NR_CPUS] __cacheline_aligned;
 cpumask_t cpu_core_map[NR_CPUS] __cacheline_aligned;
+EXPORT_SYMBOL(cpu_core_map);
 
 /*
  * Trampoline 80x86 program as an array.