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-rw-r--r--arch/arm64/include/asm/opcodes.h4
-rw-r--r--arch/arm64/kernel/debug-monitors.c21
-rw-r--r--arch/mips/alchemy/devboards/db1000.c18
-rw-r--r--arch/mips/alchemy/devboards/db1550.c4
-rw-r--r--arch/mips/kernel/unaligned.c51
-rw-r--r--arch/parisc/include/asm/uaccess.h1
-rw-r--r--arch/parisc/kernel/asm-offsets.c1
-rw-r--r--arch/parisc/kernel/parisc_ksyms.c10
-rw-r--r--arch/parisc/kernel/traps.c3
-rw-r--r--arch/parisc/lib/fixup.S6
-rw-r--r--arch/parisc/mm/fault.c1
-rw-r--r--arch/powerpc/mm/hugetlbpage.c4
-rw-r--r--arch/x86/include/asm/kvm_host.h2
-rw-r--r--arch/x86/include/asm/pci_x86.h2
-rw-r--r--arch/x86/kvm/x86.c20
-rw-r--r--arch/x86/pci/common.c26
-rw-r--r--arch/x86/pci/intel_mid_pci.c9
-rw-r--r--arch/x86/pci/irq.c23
18 files changed, 119 insertions, 87 deletions
diff --git a/arch/arm64/include/asm/opcodes.h b/arch/arm64/include/asm/opcodes.h
index 4e603ea36ad3..123f45d92cd1 100644
--- a/arch/arm64/include/asm/opcodes.h
+++ b/arch/arm64/include/asm/opcodes.h
@@ -1 +1,5 @@
+#ifdef CONFIG_CPU_BIG_ENDIAN
+#define CONFIG_CPU_ENDIAN_BE8 CONFIG_CPU_BIG_ENDIAN
+#endif
+
#include <../../arm/include/asm/opcodes.h>
diff --git a/arch/arm64/kernel/debug-monitors.c b/arch/arm64/kernel/debug-monitors.c
index 8aee3aeec3e6..c1492ba1f6d1 100644
--- a/arch/arm64/kernel/debug-monitors.c
+++ b/arch/arm64/kernel/debug-monitors.c
@@ -186,20 +186,21 @@ static void clear_regs_spsr_ss(struct pt_regs *regs)
/* EL1 Single Step Handler hooks */
static LIST_HEAD(step_hook);
-static DEFINE_RWLOCK(step_hook_lock);
+static DEFINE_SPINLOCK(step_hook_lock);
void register_step_hook(struct step_hook *hook)
{
- write_lock(&step_hook_lock);
- list_add(&hook->node, &step_hook);
- write_unlock(&step_hook_lock);
+ spin_lock(&step_hook_lock);
+ list_add_rcu(&hook->node, &step_hook);
+ spin_unlock(&step_hook_lock);
}
void unregister_step_hook(struct step_hook *hook)
{
- write_lock(&step_hook_lock);
- list_del(&hook->node);
- write_unlock(&step_hook_lock);
+ spin_lock(&step_hook_lock);
+ list_del_rcu(&hook->node);
+ spin_unlock(&step_hook_lock);
+ synchronize_rcu();
}
/*
@@ -213,15 +214,15 @@ static int call_step_hook(struct pt_regs *regs, unsigned int esr)
struct step_hook *hook;
int retval = DBG_HOOK_ERROR;
- read_lock(&step_hook_lock);
+ rcu_read_lock();
- list_for_each_entry(hook, &step_hook, node) {
+ list_for_each_entry_rcu(hook, &step_hook, node) {
retval = hook->fn(regs, esr);
if (retval == DBG_HOOK_HANDLED)
break;
}
- read_unlock(&step_hook_lock);
+ rcu_read_unlock();
return retval;
}
diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
index bdeed9d13c6f..433c4b9a9f0a 100644
--- a/arch/mips/alchemy/devboards/db1000.c
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -503,15 +503,15 @@ int __init db1000_dev_setup(void)
if (board == BCSR_WHOAMI_DB1500) {
c0 = AU1500_GPIO2_INT;
c1 = AU1500_GPIO5_INT;
- d0 = AU1500_GPIO0_INT;
- d1 = AU1500_GPIO3_INT;
+ d0 = 0; /* GPIO number, NOT irq! */
+ d1 = 3; /* GPIO number, NOT irq! */
s0 = AU1500_GPIO1_INT;
s1 = AU1500_GPIO4_INT;
} else if (board == BCSR_WHOAMI_DB1100) {
c0 = AU1100_GPIO2_INT;
c1 = AU1100_GPIO5_INT;
- d0 = AU1100_GPIO0_INT;
- d1 = AU1100_GPIO3_INT;
+ d0 = 0; /* GPIO number, NOT irq! */
+ d1 = 3; /* GPIO number, NOT irq! */
s0 = AU1100_GPIO1_INT;
s1 = AU1100_GPIO4_INT;
@@ -545,15 +545,15 @@ int __init db1000_dev_setup(void)
} else if (board == BCSR_WHOAMI_DB1000) {
c0 = AU1000_GPIO2_INT;
c1 = AU1000_GPIO5_INT;
- d0 = AU1000_GPIO0_INT;
- d1 = AU1000_GPIO3_INT;
+ d0 = 0; /* GPIO number, NOT irq! */
+ d1 = 3; /* GPIO number, NOT irq! */
s0 = AU1000_GPIO1_INT;
s1 = AU1000_GPIO4_INT;
platform_add_devices(db1000_devs, ARRAY_SIZE(db1000_devs));
} else if ((board == BCSR_WHOAMI_PB1500) ||
(board == BCSR_WHOAMI_PB1500R2)) {
c0 = AU1500_GPIO203_INT;
- d0 = AU1500_GPIO201_INT;
+ d0 = 1; /* GPIO number, NOT irq! */
s0 = AU1500_GPIO202_INT;
twosocks = 0;
flashsize = 64;
@@ -566,7 +566,7 @@ int __init db1000_dev_setup(void)
*/
} else if (board == BCSR_WHOAMI_PB1100) {
c0 = AU1100_GPIO11_INT;
- d0 = AU1100_GPIO9_INT;
+ d0 = 9; /* GPIO number, NOT irq! */
s0 = AU1100_GPIO10_INT;
twosocks = 0;
flashsize = 64;
@@ -583,7 +583,6 @@ int __init db1000_dev_setup(void)
} else
return 0; /* unknown board, no further dev setup to do */
- irq_set_irq_type(d0, IRQ_TYPE_EDGE_BOTH);
irq_set_irq_type(c0, IRQ_TYPE_LEVEL_LOW);
irq_set_irq_type(s0, IRQ_TYPE_LEVEL_LOW);
@@ -597,7 +596,6 @@ int __init db1000_dev_setup(void)
c0, d0, /*s0*/0, 0, 0);
if (twosocks) {
- irq_set_irq_type(d1, IRQ_TYPE_EDGE_BOTH);
irq_set_irq_type(c1, IRQ_TYPE_LEVEL_LOW);
irq_set_irq_type(s1, IRQ_TYPE_LEVEL_LOW);
diff --git a/arch/mips/alchemy/devboards/db1550.c b/arch/mips/alchemy/devboards/db1550.c
index 5740bcfdfc7f..6c37b9326f41 100644
--- a/arch/mips/alchemy/devboards/db1550.c
+++ b/arch/mips/alchemy/devboards/db1550.c
@@ -514,7 +514,7 @@ static void __init db1550_devices(void)
AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
AU1000_PCMCIA_IO_PHYS_ADDR,
AU1000_PCMCIA_IO_PHYS_ADDR + 0x000010000 - 1,
- AU1550_GPIO3_INT, AU1550_GPIO0_INT,
+ AU1550_GPIO3_INT, 0,
/*AU1550_GPIO21_INT*/0, 0, 0);
db1x_register_pcmcia_socket(
@@ -524,7 +524,7 @@ static void __init db1550_devices(void)
AU1000_PCMCIA_MEM_PHYS_ADDR + 0x004400000 - 1,
AU1000_PCMCIA_IO_PHYS_ADDR + 0x004000000,
AU1000_PCMCIA_IO_PHYS_ADDR + 0x004010000 - 1,
- AU1550_GPIO5_INT, AU1550_GPIO1_INT,
+ AU1550_GPIO5_INT, 1,
/*AU1550_GPIO22_INT*/0, 0, 1);
platform_device_register(&db1550_nand_dev);
diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c
index 490cea569d57..5c62065cbf22 100644
--- a/arch/mips/kernel/unaligned.c
+++ b/arch/mips/kernel/unaligned.c
@@ -885,7 +885,7 @@ static void emulate_load_store_insn(struct pt_regs *regs,
{
union mips_instruction insn;
unsigned long value;
- unsigned int res;
+ unsigned int res, preempted;
unsigned long origpc;
unsigned long orig31;
void __user *fault_addr = NULL;
@@ -1226,27 +1226,36 @@ static void emulate_load_store_insn(struct pt_regs *regs,
if (!access_ok(VERIFY_READ, addr, sizeof(*fpr)))
goto sigbus;
- /*
- * Disable preemption to avoid a race between copying
- * state from userland, migrating to another CPU and
- * updating the hardware vector register below.
- */
- preempt_disable();
-
- res = __copy_from_user_inatomic(fpr, addr,
- sizeof(*fpr));
- if (res)
- goto fault;
-
- /*
- * Update the hardware register if it is in use by the
- * task in this quantum, in order to avoid having to
- * save & restore the whole vector context.
- */
- if (test_thread_flag(TIF_USEDMSA))
- write_msa_wr(wd, fpr, df);
+ do {
+ /*
+ * If we have live MSA context keep track of
+ * whether we get preempted in order to avoid
+ * the register context we load being clobbered
+ * by the live context as it's saved during
+ * preemption. If we don't have live context
+ * then it can't be saved to clobber the value
+ * we load.
+ */
+ preempted = test_thread_flag(TIF_USEDMSA);
+
+ res = __copy_from_user_inatomic(fpr, addr,
+ sizeof(*fpr));
+ if (res)
+ goto fault;
- preempt_enable();
+ /*
+ * Update the hardware register if it is in use
+ * by the task in this quantum, in order to
+ * avoid having to save & restore the whole
+ * vector context.
+ */
+ preempt_disable();
+ if (test_thread_flag(TIF_USEDMSA)) {
+ write_msa_wr(wd, fpr, df);
+ preempted = 0;
+ }
+ preempt_enable();
+ } while (preempted);
break;
case msa_st_op:
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index 0abdd4c607ed..1960b87c1c8b 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -76,6 +76,7 @@ struct exception_table_entry {
*/
struct exception_data {
unsigned long fault_ip;
+ unsigned long fault_gp;
unsigned long fault_space;
unsigned long fault_addr;
};
diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
index d2f62570a7b1..78d30d2ea2d8 100644
--- a/arch/parisc/kernel/asm-offsets.c
+++ b/arch/parisc/kernel/asm-offsets.c
@@ -299,6 +299,7 @@ int main(void)
#endif
BLANK();
DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
+ DEFINE(EXCDATA_GP, offsetof(struct exception_data, fault_gp));
DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
BLANK();
diff --git a/arch/parisc/kernel/parisc_ksyms.c b/arch/parisc/kernel/parisc_ksyms.c
index 568b2c61ea02..3cad8aadc69e 100644
--- a/arch/parisc/kernel/parisc_ksyms.c
+++ b/arch/parisc/kernel/parisc_ksyms.c
@@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64);
EXPORT_SYMBOL(lclear_user);
EXPORT_SYMBOL(lstrnlen_user);
-/* Global fixups */
-extern void fixup_get_user_skip_1(void);
-extern void fixup_get_user_skip_2(void);
-extern void fixup_put_user_skip_1(void);
-extern void fixup_put_user_skip_2(void);
+/* Global fixups - defined as int to avoid creation of function pointers */
+extern int fixup_get_user_skip_1;
+extern int fixup_get_user_skip_2;
+extern int fixup_put_user_skip_1;
+extern int fixup_put_user_skip_2;
EXPORT_SYMBOL(fixup_get_user_skip_1);
EXPORT_SYMBOL(fixup_get_user_skip_2);
EXPORT_SYMBOL(fixup_put_user_skip_1);
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 553b09855cfd..77e2262c97f6 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -798,6 +798,9 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
if (fault_space == 0 && !faulthandler_disabled())
{
+ /* Clean up and return if in exception table. */
+ if (fixup_exception(regs))
+ return;
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
parisc_terminate("Kernel Fault", regs, code, fault_address);
}
diff --git a/arch/parisc/lib/fixup.S b/arch/parisc/lib/fixup.S
index 536ef66bb94b..1052b747e011 100644
--- a/arch/parisc/lib/fixup.S
+++ b/arch/parisc/lib/fixup.S
@@ -26,6 +26,7 @@
#ifdef CONFIG_SMP
.macro get_fault_ip t1 t2
+ loadgp
addil LT%__per_cpu_offset,%r27
LDREG RT%__per_cpu_offset(%r1),\t1
/* t2 = smp_processor_id() */
@@ -40,14 +41,19 @@
LDREG RT%exception_data(%r1),\t1
/* t1 = this_cpu_ptr(&exception_data) */
add,l \t1,\t2,\t1
+ /* %r27 = t1->fault_gp - restore gp */
+ LDREG EXCDATA_GP(\t1), %r27
/* t1 = t1->fault_ip */
LDREG EXCDATA_IP(\t1), \t1
.endm
#else
.macro get_fault_ip t1 t2
+ loadgp
/* t1 = this_cpu_ptr(&exception_data) */
addil LT%exception_data,%r27
LDREG RT%exception_data(%r1),\t2
+ /* %r27 = t2->fault_gp - restore gp */
+ LDREG EXCDATA_GP(\t2), %r27
/* t1 = t2->fault_ip */
LDREG EXCDATA_IP(\t2), \t1
.endm
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index a762864ec92e..f9064449908a 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -151,6 +151,7 @@ int fixup_exception(struct pt_regs *regs)
struct exception_data *d;
d = this_cpu_ptr(&exception_data);
d->fault_ip = regs->iaoq[0];
+ d->fault_gp = regs->gr[27];
d->fault_space = regs->isr;
d->fault_addr = regs->ior;
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 9833fee493ec..807f1594701d 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -486,13 +486,13 @@ static void hugepd_free(struct mmu_gather *tlb, void *hugepte)
{
struct hugepd_freelist **batchp;
- batchp = this_cpu_ptr(&hugepd_freelist_cur);
+ batchp = &get_cpu_var(hugepd_freelist_cur);
if (atomic_read(&tlb->mm->mm_users) < 2 ||
cpumask_equal(mm_cpumask(tlb->mm),
cpumask_of(smp_processor_id()))) {
kmem_cache_free(hugepte_cache, hugepte);
- put_cpu_var(hugepd_freelist_cur);
+ put_cpu_var(hugepd_freelist_cur);
return;
}
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 30cfd64295a0..9d2abb2a41d2 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -41,7 +41,7 @@
#define KVM_PIO_PAGE_OFFSET 1
#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
-#define KVM_HALT_POLL_NS_DEFAULT 500000
+#define KVM_HALT_POLL_NS_DEFAULT 400000
#define KVM_IRQCHIP_NUM_PINS KVM_IOAPIC_NUM_PINS
diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index fa1195dae425..164e3f8d3c3d 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -93,6 +93,8 @@ extern raw_spinlock_t pci_config_lock;
extern int (*pcibios_enable_irq)(struct pci_dev *dev);
extern void (*pcibios_disable_irq)(struct pci_dev *dev);
+extern bool mp_should_keep_irq(struct device *dev);
+
struct pci_raw_ops {
int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
int reg, int len, u32 *val);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 8bfc5fc6a39b..7eb4ebd3ebea 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6024,12 +6024,10 @@ static int inject_pending_event(struct kvm_vcpu *vcpu, bool req_int_win)
}
/* try to inject new event if pending */
- if (vcpu->arch.nmi_pending) {
- if (kvm_x86_ops->nmi_allowed(vcpu)) {
- --vcpu->arch.nmi_pending;
- vcpu->arch.nmi_injected = true;
- kvm_x86_ops->set_nmi(vcpu);
- }
+ if (vcpu->arch.nmi_pending && kvm_x86_ops->nmi_allowed(vcpu)) {
+ --vcpu->arch.nmi_pending;
+ vcpu->arch.nmi_injected = true;
+ kvm_x86_ops->set_nmi(vcpu);
} else if (kvm_cpu_has_injectable_intr(vcpu)) {
/*
* Because interrupts can be injected asynchronously, we are
@@ -6474,10 +6472,12 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
if (inject_pending_event(vcpu, req_int_win) != 0)
req_immediate_exit = true;
/* enable NMI/IRQ window open exits if needed */
- else if (vcpu->arch.nmi_pending)
- kvm_x86_ops->enable_nmi_window(vcpu);
- else if (kvm_cpu_has_injectable_intr(vcpu) || req_int_win)
- kvm_x86_ops->enable_irq_window(vcpu);
+ else {
+ if (vcpu->arch.nmi_pending)
+ kvm_x86_ops->enable_nmi_window(vcpu);
+ if (kvm_cpu_has_injectable_intr(vcpu) || req_int_win)
+ kvm_x86_ops->enable_irq_window(vcpu);
+ }
if (kvm_lapic_enabled(vcpu)) {
update_cr8_intercept(vcpu);
diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index eccd4d99e6a4..8fd6f44aee83 100644
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -673,28 +673,22 @@ int pcibios_add_device(struct pci_dev *dev)
return 0;
}
-int pcibios_alloc_irq(struct pci_dev *dev)
+int pcibios_enable_device(struct pci_dev *dev, int mask)
{
- /*
- * If the PCI device was already claimed by core code and has
- * MSI enabled, probing of the pcibios IRQ will overwrite
- * dev->irq. So bail out if MSI is already enabled.
- */
- if (pci_dev_msi_enabled(dev))
- return -EBUSY;
+ int err;
- return pcibios_enable_irq(dev);
-}
+ if ((err = pci_enable_resources(dev, mask)) < 0)
+ return err;
-void pcibios_free_irq(struct pci_dev *dev)
-{
- if (pcibios_disable_irq)
- pcibios_disable_irq(dev);
+ if (!pci_dev_msi_enabled(dev))
+ return pcibios_enable_irq(dev);
+ return 0;
}
-int pcibios_enable_device(struct pci_dev *dev, int mask)
+void pcibios_disable_device (struct pci_dev *dev)
{
- return pci_enable_resources(dev, mask);
+ if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq)
+ pcibios_disable_irq(dev);
}
int pci_ext_cfg_avail(void)
diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
index 0d24e7c10145..8b93e634af84 100644
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -215,7 +215,7 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
int polarity;
int ret;
- if (pci_has_managed_irq(dev))
+ if (dev->irq_managed && dev->irq > 0)
return 0;
switch (intel_mid_identify_cpu()) {
@@ -256,13 +256,10 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
static void intel_mid_pci_irq_disable(struct pci_dev *dev)
{
- if (pci_has_managed_irq(dev)) {
+ if (!mp_should_keep_irq(&dev->dev) && dev->irq_managed &&
+ dev->irq > 0) {
mp_unmap_irq(dev->irq);
dev->irq_managed = 0;
- /*
- * Don't reset dev->irq here, otherwise
- * intel_mid_pci_irq_enable() will fail on next call.
- */
}
}
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index 32e70343e6fd..9bd115484745 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -1202,7 +1202,7 @@ static int pirq_enable_irq(struct pci_dev *dev)
struct pci_dev *temp_dev;
int irq;
- if (pci_has_managed_irq(dev))
+ if (dev->irq_managed && dev->irq > 0)
return 0;
irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
@@ -1230,7 +1230,8 @@ static int pirq_enable_irq(struct pci_dev *dev)
}
dev = temp_dev;
if (irq >= 0) {
- pci_set_managed_irq(dev, irq);
+ dev->irq_managed = 1;
+ dev->irq = irq;
dev_info(&dev->dev, "PCI->APIC IRQ transform: "
"INT %c -> IRQ %d\n", 'A' + pin - 1, irq);
return 0;
@@ -1256,10 +1257,24 @@ static int pirq_enable_irq(struct pci_dev *dev)
return 0;
}
+bool mp_should_keep_irq(struct device *dev)
+{
+ if (dev->power.is_prepared)
+ return true;
+#ifdef CONFIG_PM
+ if (dev->power.runtime_status == RPM_SUSPENDING)
+ return true;
+#endif
+
+ return false;
+}
+
static void pirq_disable_irq(struct pci_dev *dev)
{
- if (io_apic_assign_pci_irqs && pci_has_managed_irq(dev)) {
+ if (io_apic_assign_pci_irqs && !mp_should_keep_irq(&dev->dev) &&
+ dev->irq_managed && dev->irq) {
mp_unmap_irq(dev->irq);
- pci_reset_managed_irq(dev);
+ dev->irq = 0;
+ dev->irq_managed = 0;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 05:04:03 +0000