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-rw-r--r--arch/x86_64/kernel/io_apic.c11
-rw-r--r--arch/x86_64/kernel/ptrace.c4
-rw-r--r--arch/x86_64/kernel/setup.c25
-rw-r--r--arch/x86_64/kernel/signal.c4
-rw-r--r--arch/x86_64/kernel/smpboot.c1
-rw-r--r--arch/x86_64/mm/ioremap.c29
6 files changed, 36 insertions, 38 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index ac76843..80e9b49 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 60dc9b9..525f6a1 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 b9fd025..99f038e 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 d439ced..3fdcdba 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 5abdee1..f1ec0f3 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.
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index c6fb0cb..58aac23 100644
--- a/arch/x86_64/mm/ioremap.c
+++ b/arch/x86_64/mm/ioremap.c
@@ -133,7 +133,7 @@ ioremap_change_attr(unsigned long phys_addr, unsigned long size,
unsigned long flags)
{
int err = 0;
- if (flags && phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) {
+ if (phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) {
unsigned long npages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
unsigned long vaddr = (unsigned long) __va(phys_addr);
@@ -214,7 +214,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
return NULL;
}
- if (ioremap_change_attr(phys_addr, size, flags) < 0) {
+ if (flags && ioremap_change_attr(phys_addr, size, flags) < 0) {
area->flags &= 0xffffff;
vunmap(addr);
return NULL;
@@ -251,7 +251,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
void iounmap(volatile void __iomem *addr)
{
- struct vm_struct *p, **pprev;
+ struct vm_struct *p;
if (addr <= high_memory)
return;
@@ -260,24 +260,11 @@ void iounmap(volatile void __iomem *addr)
return;
write_lock(&vmlist_lock);
- for (p = vmlist, pprev = &vmlist; p != NULL; pprev = &p->next, p = *pprev)
- if (p->addr == (void *)(PAGE_MASK & (unsigned long)addr))
- break;
- if (!p) {
- printk("__iounmap: bad address %p\n", addr);
- goto out_unlock;
- }
- *pprev = p->next;
- unmap_vm_area(p);
- if ((p->flags >> 20) &&
- p->phys_addr + p->size - 1 < virt_to_phys(high_memory)) {
- /* p->size includes the guard page, but cpa doesn't like that */
- change_page_attr_addr((unsigned long)__va(p->phys_addr),
- p->size >> PAGE_SHIFT,
- PAGE_KERNEL);
- global_flush_tlb();
- }
-out_unlock:
+ p = __remove_vm_area((void *)((unsigned long)addr & PAGE_MASK));
+ if (!p)
+ printk("iounmap: bad address %p\n", addr);
+ else if (p->flags >> 20)
+ ioremap_change_attr(p->phys_addr, p->size, 0);
write_unlock(&vmlist_lock);
kfree(p);
}
generated by cgit v1.1 at 2025-08-24 21:40:44 +0000