summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/apic
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/apic')
-rw-r--r--arch/x86/kernel/apic/apic.c6
-rw-r--r--arch/x86/kernel/apic/apic_flat_64.c4
-rw-r--r--arch/x86/kernel/apic/io_apic.c7
-rw-r--r--arch/x86/kernel/apic/nmi.c5
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c31
5 files changed, 46 insertions, 7 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 098ec84b8c0..f2870920f24 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -431,6 +431,12 @@ static void __cpuinit setup_APIC_timer(void)
{
struct clock_event_device *levt = &__get_cpu_var(lapic_events);
+ if (cpu_has(&current_cpu_data, X86_FEATURE_ARAT)) {
+ lapic_clockevent.features &= ~CLOCK_EVT_FEAT_C3STOP;
+ /* Make LAPIC timer preferrable over percpu HPET */
+ lapic_clockevent.rating = 150;
+ }
+
memcpy(levt, &lapic_clockevent, sizeof(*levt));
levt->cpumask = cpumask_of(smp_processor_id());
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 0014714ea97..306e5e88fb6 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -212,7 +212,7 @@ struct apic apic_flat = {
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
.smp_callin_clear_local_apic = NULL,
- .inquire_remote_apic = NULL,
+ .inquire_remote_apic = default_inquire_remote_apic,
.read = native_apic_mem_read,
.write = native_apic_mem_write,
@@ -362,7 +362,7 @@ struct apic apic_physflat = {
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
.wait_for_init_deassert = NULL,
.smp_callin_clear_local_apic = NULL,
- .inquire_remote_apic = NULL,
+ .inquire_remote_apic = default_inquire_remote_apic,
.read = native_apic_mem_read,
.write = native_apic_mem_write,
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 767fe7e46d6..30da617d18e 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2524,7 +2524,6 @@ static void irq_complete_move(struct irq_desc **descp)
static inline void irq_complete_move(struct irq_desc **descp) {}
#endif
-#ifdef CONFIG_X86_X2APIC
static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
{
int apic, pin;
@@ -2558,6 +2557,7 @@ eoi_ioapic_irq(struct irq_desc *desc)
spin_unlock_irqrestore(&ioapic_lock, flags);
}
+#ifdef CONFIG_X86_X2APIC
static void ack_x2apic_level(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
@@ -2634,6 +2634,9 @@ static void ack_apic_level(unsigned int irq)
*/
ack_APIC_irq();
+ if (irq_remapped(irq))
+ eoi_ioapic_irq(desc);
+
/* Now we can move and renable the irq */
if (unlikely(do_unmask_irq)) {
/* Only migrate the irq if the ack has been received.
@@ -3667,12 +3670,14 @@ int arch_setup_hpet_msi(unsigned int irq)
{
int ret;
struct msi_msg msg;
+ struct irq_desc *desc = irq_to_desc(irq);
ret = msi_compose_msg(NULL, irq, &msg);
if (ret < 0)
return ret;
hpet_msi_write(irq, &msg);
+ desc->status |= IRQ_MOVE_PCNTXT;
set_irq_chip_and_handler_name(irq, &hpet_msi_type, handle_edge_irq,
"edge");
diff --git a/arch/x86/kernel/apic/nmi.c b/arch/x86/kernel/apic/nmi.c
index d6bd6240715..ce4fbfa315a 100644
--- a/arch/x86/kernel/apic/nmi.c
+++ b/arch/x86/kernel/apic/nmi.c
@@ -138,7 +138,7 @@ int __init check_nmi_watchdog(void)
if (!prev_nmi_count)
goto error;
- alloc_cpumask_var(&backtrace_mask, GFP_KERNEL);
+ alloc_cpumask_var(&backtrace_mask, GFP_KERNEL|__GFP_ZERO);
printk(KERN_INFO "Testing NMI watchdog ... ");
#ifdef CONFIG_SMP
@@ -414,7 +414,8 @@ nmi_watchdog_tick(struct pt_regs *regs, unsigned reason)
touched = 1;
}
- if (cpumask_test_cpu(cpu, backtrace_mask)) {
+ /* We can be called before check_nmi_watchdog, hence NULL check. */
+ if (backtrace_mask != NULL && cpumask_test_cpu(cpu, backtrace_mask)) {
static DEFINE_SPINLOCK(lock); /* Serialise the printks */
spin_lock(&lock);
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 1248318436e..2bda6935297 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -19,6 +19,7 @@
#include <linux/timer.h>
#include <linux/cpu.h>
#include <linux/init.h>
+#include <linux/io.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
@@ -34,6 +35,17 @@ DEFINE_PER_CPU(int, x2apic_extra_bits);
static enum uv_system_type uv_system_type;
+static int early_get_nodeid(void)
+{
+ union uvh_node_id_u node_id;
+ unsigned long *mmr;
+
+ mmr = early_ioremap(UV_LOCAL_MMR_BASE | UVH_NODE_ID, sizeof(*mmr));
+ node_id.v = *mmr;
+ early_iounmap(mmr, sizeof(*mmr));
+ return node_id.s.node_id;
+}
+
static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (!strcmp(oem_id, "SGI")) {
@@ -42,6 +54,8 @@ static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
else if (!strcmp(oem_table_id, "UVX"))
uv_system_type = UV_X2APIC;
else if (!strcmp(oem_table_id, "UVH")) {
+ __get_cpu_var(x2apic_extra_bits) =
+ early_get_nodeid() << (UV_APIC_PNODE_SHIFT - 1);
uv_system_type = UV_NON_UNIQUE_APIC;
return 1;
}
@@ -549,7 +563,8 @@ void __init uv_system_init(void)
unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
int max_pnode = 0;
- unsigned long mmr_base, present;
+ unsigned long mmr_base, present, paddr;
+ unsigned short pnode_mask;
map_low_mmrs();
@@ -592,6 +607,7 @@ void __init uv_system_init(void)
}
}
+ pnode_mask = (1 << n_val) - 1;
node_id.v = uv_read_local_mmr(UVH_NODE_ID);
gnode_upper = (((unsigned long)node_id.s.node_id) &
~((1 << n_val) - 1)) << m_val;
@@ -615,7 +631,7 @@ void __init uv_system_init(void)
uv_cpu_hub_info(cpu)->numa_blade_id = blade;
uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
uv_cpu_hub_info(cpu)->pnode = pnode;
- uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) - 1;
+ uv_cpu_hub_info(cpu)->pnode_mask = pnode_mask;
uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
@@ -631,6 +647,17 @@ void __init uv_system_init(void)
lcpu, blade);
}
+ /* Add blade/pnode info for nodes without cpus */
+ for_each_online_node(nid) {
+ if (uv_node_to_blade[nid] >= 0)
+ continue;
+ paddr = node_start_pfn(nid) << PAGE_SHIFT;
+ paddr = uv_soc_phys_ram_to_gpa(paddr);
+ pnode = (paddr >> m_val) & pnode_mask;
+ blade = boot_pnode_to_blade(pnode);
+ uv_node_to_blade[nid] = blade;
+ }
+
map_gru_high(max_pnode);
map_mmr_high(max_pnode);
map_config_high(max_pnode);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 16:03:46 +0000