aboutsummaryrefslogtreecommitdiff
path: root/arch/x86
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/pci_x86.h2
-rw-r--r--arch/x86/kernel/amd_iommu.c16
-rw-r--r--arch/x86/kernel/amd_iommu_init.c20
-rw-r--r--arch/x86/kernel/cpu/mcheck/mce.c10
-rw-r--r--arch/x86/kernel/cpu/perf_event.c22
-rw-r--r--arch/x86/kernel/setup_percpu.c6
-rw-r--r--arch/x86/kernel/smpboot.c2
-rw-r--r--arch/x86/mm/numa.c6
-rw-r--r--arch/x86/pci/legacy.c42
-rw-r--r--arch/x86/xen/suspend.c4
10 files changed, 88 insertions, 42 deletions
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index 8d8797eae5d7..cd2a31dc5fb8 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -53,6 +53,8 @@ extern int pcibios_last_bus;
extern struct pci_bus *pci_root_bus;
extern struct pci_ops pci_root_ops;
+void pcibios_scan_specific_bus(int busn);
+
/* pci-irq.c */
struct irq_info {
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index fa5a1474cd18..0d20286d78c6 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1487,6 +1487,7 @@ static int __attach_device(struct device *dev,
struct protection_domain *domain)
{
struct iommu_dev_data *dev_data, *alias_data;
+ int ret;
dev_data = get_dev_data(dev);
alias_data = get_dev_data(dev_data->alias);
@@ -1498,13 +1499,14 @@ static int __attach_device(struct device *dev,
spin_lock(&domain->lock);
/* Some sanity checks */
+ ret = -EBUSY;
if (alias_data->domain != NULL &&
alias_data->domain != domain)
- return -EBUSY;
+ goto out_unlock;
if (dev_data->domain != NULL &&
dev_data->domain != domain)
- return -EBUSY;
+ goto out_unlock;
/* Do real assignment */
if (dev_data->alias != dev) {
@@ -1520,10 +1522,14 @@ static int __attach_device(struct device *dev,
atomic_inc(&dev_data->bind);
+ ret = 0;
+
+out_unlock:
+
/* ready */
spin_unlock(&domain->lock);
- return 0;
+ return ret;
}
/*
@@ -2324,10 +2330,6 @@ int __init amd_iommu_init_dma_ops(void)
iommu_detected = 1;
swiotlb = 0;
-#ifdef CONFIG_GART_IOMMU
- gart_iommu_aperture_disabled = 1;
- gart_iommu_aperture = 0;
-#endif
/* Make the driver finally visible to the drivers */
dma_ops = &amd_iommu_dma_ops;
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 3bacb4d0844c..3cc63e2b8dd4 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -287,8 +287,12 @@ static u8 * __init iommu_map_mmio_space(u64 address)
{
u8 *ret;
- if (!request_mem_region(address, MMIO_REGION_LENGTH, "amd_iommu"))
+ if (!request_mem_region(address, MMIO_REGION_LENGTH, "amd_iommu")) {
+ pr_err("AMD-Vi: Can not reserve memory region %llx for mmio\n",
+ address);
+ pr_err("AMD-Vi: This is a BIOS bug. Please contact your hardware vendor\n");
return NULL;
+ }
ret = ioremap_nocache(address, MMIO_REGION_LENGTH);
if (ret != NULL)
@@ -1314,7 +1318,7 @@ static int __init amd_iommu_init(void)
ret = amd_iommu_init_dma_ops();
if (ret)
- goto free;
+ goto free_disable;
amd_iommu_init_api();
@@ -1332,9 +1336,10 @@ static int __init amd_iommu_init(void)
out:
return ret;
-free:
+free_disable:
disable_iommus();
+free:
amd_iommu_uninit_devices();
free_pages((unsigned long)amd_iommu_pd_alloc_bitmap,
@@ -1353,6 +1358,15 @@ free:
free_unity_maps();
+#ifdef CONFIG_GART_IOMMU
+ /*
+ * We failed to initialize the AMD IOMMU - try fallback to GART
+ * if possible.
+ */
+ gart_iommu_init();
+
+#endif
+
goto out;
}
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 707165dbc203..18cc42562250 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -36,6 +36,7 @@
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/debugfs.h>
+#include <linux/edac_mce.h>
#include <asm/processor.h>
#include <asm/hw_irq.h>
@@ -169,6 +170,15 @@ void mce_log(struct mce *mce)
entry = rcu_dereference_check_mce(mcelog.next);
for (;;) {
/*
+ * If edac_mce is enabled, it will check the error type
+ * and will process it, if it is a known error.
+ * Otherwise, the error will be sent through mcelog
+ * interface
+ */
+ if (edac_mce_parse(mce))
+ return;
+
+ /*
* When the buffer fills up discard new entries.
* Assume that the earlier errors are the more
* interesting ones:
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index c77586061bcb..5db5b7d65a18 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -106,6 +106,7 @@ struct cpu_hw_events {
int n_events;
int n_added;
+ int n_txn;
int assign[X86_PMC_IDX_MAX]; /* event to counter assignment */
u64 tags[X86_PMC_IDX_MAX];
struct perf_event *event_list[X86_PMC_IDX_MAX]; /* in enabled order */
@@ -983,6 +984,7 @@ static int x86_pmu_enable(struct perf_event *event)
out:
cpuc->n_events = n;
cpuc->n_added += n - n0;
+ cpuc->n_txn += n - n0;
return 0;
}
@@ -1089,6 +1091,14 @@ static void x86_pmu_disable(struct perf_event *event)
struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
int i;
+ /*
+ * If we're called during a txn, we don't need to do anything.
+ * The events never got scheduled and ->cancel_txn will truncate
+ * the event_list.
+ */
+ if (cpuc->group_flag & PERF_EVENT_TXN_STARTED)
+ return;
+
x86_pmu_stop(event);
for (i = 0; i < cpuc->n_events; i++) {
@@ -1379,6 +1389,7 @@ static void x86_pmu_start_txn(const struct pmu *pmu)
struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
cpuc->group_flag |= PERF_EVENT_TXN_STARTED;
+ cpuc->n_txn = 0;
}
/*
@@ -1391,6 +1402,11 @@ static void x86_pmu_cancel_txn(const struct pmu *pmu)
struct cpu_hw_events *cpuc = &__get_cpu_var(cpu_hw_events);
cpuc->group_flag &= ~PERF_EVENT_TXN_STARTED;
+ /*
+ * Truncate the collected events.
+ */
+ cpuc->n_added -= cpuc->n_txn;
+ cpuc->n_events -= cpuc->n_txn;
}
/*
@@ -1419,6 +1435,12 @@ static int x86_pmu_commit_txn(const struct pmu *pmu)
*/
memcpy(cpuc->assign, assign, n*sizeof(int));
+ /*
+ * Clear out the txn count so that ->cancel_txn() which gets
+ * run after ->commit_txn() doesn't undo things.
+ */
+ cpuc->n_txn = 0;
+
return 0;
}
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index cf592767812e..de3b63ae3da2 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -21,12 +21,6 @@
#include <asm/cpu.h>
#include <asm/stackprotector.h>
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-# define DBG(fmt, ...) pr_dbg(fmt, ##__VA_ARGS__)
-#else
-# define DBG(fmt, ...) do { if (0) pr_dbg(fmt, ##__VA_ARGS__); } while (0)
-#endif
-
DEFINE_PER_CPU(int, cpu_number);
EXPORT_PER_CPU_SYMBOL(cpu_number);
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 37462f1ddba5..c4f33b2e77d6 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -686,7 +686,7 @@ static void __cpuinit do_fork_idle(struct work_struct *work)
static void __cpuinit announce_cpu(int cpu, int apicid)
{
static int current_node = -1;
- int node = cpu_to_node(cpu);
+ int node = early_cpu_to_node(cpu);
if (system_state == SYSTEM_BOOTING) {
if (node != current_node) {
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index 550df481accd..787c52ca49c3 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -3,12 +3,6 @@
#include <linux/module.h>
#include <linux/bootmem.h>
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-# define DBG(x...) printk(KERN_DEBUG x)
-#else
-# define DBG(x...)
-#endif
-
/*
* Which logical CPUs are on which nodes
*/
diff --git a/arch/x86/pci/legacy.c b/arch/x86/pci/legacy.c
index 0db5eaf54560..8d460eaf524f 100644
--- a/arch/x86/pci/legacy.c
+++ b/arch/x86/pci/legacy.c
@@ -11,28 +11,14 @@
*/
static void __devinit pcibios_fixup_peer_bridges(void)
{
- int n, devfn;
- long node;
+ int n;
if (pcibios_last_bus <= 0 || pcibios_last_bus > 0xff)
return;
DBG("PCI: Peer bridge fixup\n");
- for (n=0; n <= pcibios_last_bus; n++) {
- u32 l;
- if (pci_find_bus(0, n))
- continue;
- node = get_mp_bus_to_node(n);
- for (devfn = 0; devfn < 256; devfn += 8) {
- if (!raw_pci_read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
- l != 0x0000 && l != 0xffff) {
- DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
- printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
- pci_scan_bus_on_node(n, &pci_root_ops, node);
- break;
- }
- }
- }
+ for (n=0; n <= pcibios_last_bus; n++)
+ pcibios_scan_specific_bus(n);
}
int __init pci_legacy_init(void)
@@ -50,6 +36,28 @@ int __init pci_legacy_init(void)
return 0;
}
+void pcibios_scan_specific_bus(int busn)
+{
+ int devfn;
+ long node;
+ u32 l;
+
+ if (pci_find_bus(0, busn))
+ return;
+
+ node = get_mp_bus_to_node(busn);
+ for (devfn = 0; devfn < 256; devfn += 8) {
+ if (!raw_pci_read(0, busn, devfn, PCI_VENDOR_ID, 2, &l) &&
+ l != 0x0000 && l != 0xffff) {
+ DBG("Found device at %02x:%02x [%04x]\n", busn, devfn, l);
+ printk(KERN_INFO "PCI: Discovered peer bus %02x\n", busn);
+ pci_scan_bus_on_node(busn, &pci_root_ops, node);
+ return;
+ }
+ }
+}
+EXPORT_SYMBOL_GPL(pcibios_scan_specific_bus);
+
int __init pci_subsys_init(void)
{
/*
diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c
index 987267f79bf5..a9c661108034 100644
--- a/arch/x86/xen/suspend.c
+++ b/arch/x86/xen/suspend.c
@@ -60,6 +60,6 @@ static void xen_vcpu_notify_restore(void *data)
void xen_arch_resume(void)
{
- smp_call_function(xen_vcpu_notify_restore,
- (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
+ on_each_cpu(xen_vcpu_notify_restore,
+ (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 22:41:31 +0000