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-rw-r--r--virt/kvm/assigned-dev.c7
-rw-r--r--virt/kvm/coalesced_mmio.c1
-rw-r--r--virt/kvm/eventfd.c1
-rw-r--r--virt/kvm/ioapic.c3
-rw-r--r--virt/kvm/iommu.c12
-rw-r--r--virt/kvm/irq_comm.c15
-rw-r--r--virt/kvm/kvm_main.c106
7 files changed, 103 insertions, 42 deletions
diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index 4d10b1e047f..7c98928b09d 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -1,7 +1,7 @@
/*
* Kernel-based Virtual Machine - device assignment support
*
- * Copyright (C) 2006-9 Red Hat, Inc
+ * Copyright (C) 2010 Red Hat, Inc. and/or its affiliates.
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
@@ -58,12 +58,10 @@ static int find_index_from_host_irq(struct kvm_assigned_dev_kernel
static void kvm_assigned_dev_interrupt_work_handler(struct work_struct *work)
{
struct kvm_assigned_dev_kernel *assigned_dev;
- struct kvm *kvm;
int i;
assigned_dev = container_of(work, struct kvm_assigned_dev_kernel,
interrupt_work);
- kvm = assigned_dev->kvm;
spin_lock_irq(&assigned_dev->assigned_dev_lock);
if (assigned_dev->irq_requested_type & KVM_DEV_IRQ_HOST_MSIX) {
@@ -448,9 +446,6 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
struct kvm_assigned_dev_kernel *match;
unsigned long host_irq_type, guest_irq_type;
- if (!capable(CAP_SYS_RAWIO))
- return -EPERM;
-
if (!irqchip_in_kernel(kvm))
return r;
diff --git a/virt/kvm/coalesced_mmio.c b/virt/kvm/coalesced_mmio.c
index 53850177163..fc8487564d1 100644
--- a/virt/kvm/coalesced_mmio.c
+++ b/virt/kvm/coalesced_mmio.c
@@ -2,6 +2,7 @@
* KVM coalesced MMIO
*
* Copyright (c) 2008 Bull S.A.S.
+ * Copyright 2009 Red Hat, Inc. and/or its affiliates.
*
* Author: Laurent Vivier <Laurent.Vivier@bull.net>
*
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index b81f0ebbaaa..66cf65b510b 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -2,6 +2,7 @@
* kvm eventfd support - use eventfd objects to signal various KVM events
*
* Copyright 2009 Novell. All Rights Reserved.
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Author:
* Gregory Haskins <ghaskins@novell.com>
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 3500dee9cf2..0b9df8303dc 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2001 MandrakeSoft S.A.
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* MandrakeSoft S.A.
* 43, rue d'Aboukir
@@ -151,7 +152,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
update_handled_vectors(ioapic);
mask_after = e->fields.mask;
if (mask_before != mask_after)
- kvm_fire_mask_notifiers(ioapic->kvm, index, mask_after);
+ kvm_fire_mask_notifiers(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index, mask_after);
if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG
&& ioapic->irr & (1 << index))
ioapic_service(ioapic, index);
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index 96048ee9e39..62a9caf0563 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -16,6 +16,8 @@
*
* Copyright (C) 2006-2008 Intel Corporation
* Copyright IBM Corporation, 2008
+ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
+ *
* Author: Allen M. Kay <allen.m.kay@intel.com>
* Author: Weidong Han <weidong.han@intel.com>
* Author: Ben-Ami Yassour <benami@il.ibm.com>
@@ -106,7 +108,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
get_order(page_size), flags);
if (r) {
printk(KERN_ERR "kvm_iommu_map_address:"
- "iommu failed to map pfn=%lx\n", pfn);
+ "iommu failed to map pfn=%llx\n", pfn);
goto unmap_pages;
}
@@ -124,9 +126,10 @@ unmap_pages:
static int kvm_iommu_map_memslots(struct kvm *kvm)
{
- int i, r = 0;
+ int i, idx, r = 0;
struct kvm_memslots *slots;
+ idx = srcu_read_lock(&kvm->srcu);
slots = kvm_memslots(kvm);
for (i = 0; i < slots->nmemslots; i++) {
@@ -134,6 +137,7 @@ static int kvm_iommu_map_memslots(struct kvm *kvm)
if (r)
break;
}
+ srcu_read_unlock(&kvm->srcu, idx);
return r;
}
@@ -283,15 +287,17 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
static int kvm_iommu_unmap_memslots(struct kvm *kvm)
{
- int i;
+ int i, idx;
struct kvm_memslots *slots;
+ idx = srcu_read_lock(&kvm->srcu);
slots = kvm_memslots(kvm);
for (i = 0; i < slots->nmemslots; i++) {
kvm_iommu_put_pages(kvm, slots->memslots[i].base_gfn,
slots->memslots[i].npages);
}
+ srcu_read_unlock(&kvm->srcu, idx);
return 0;
}
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index a0e88809e45..369e38010ad 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -17,6 +17,7 @@
* Authors:
* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
*
+ * Copyright 2010 Red Hat, Inc. and/or its affilates.
*/
#include <linux/kvm_host.h>
@@ -99,7 +100,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
if (r < 0)
r = 0;
r += kvm_apic_set_irq(vcpu, irq);
- } else {
+ } else if (kvm_lapic_enabled(vcpu)) {
if (!lowest)
lowest = vcpu;
else if (kvm_apic_compare_prio(vcpu, lowest) < 0)
@@ -278,15 +279,19 @@ void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
synchronize_rcu();
}
-void kvm_fire_mask_notifiers(struct kvm *kvm, int irq, bool mask)
+void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
+ bool mask)
{
struct kvm_irq_mask_notifier *kimn;
struct hlist_node *n;
+ int gsi;
rcu_read_lock();
- hlist_for_each_entry_rcu(kimn, n, &kvm->mask_notifier_list, link)
- if (kimn->irq == irq)
- kimn->func(kimn, mask);
+ gsi = rcu_dereference(kvm->irq_routing)->chip[irqchip][pin];
+ if (gsi != -1)
+ hlist_for_each_entry_rcu(kimn, n, &kvm->mask_notifier_list, link)
+ if (kimn->irq == gsi)
+ kimn->func(kimn, mask);
rcu_read_unlock();
}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index f032806a212..b78b794c103 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5,6 +5,7 @@
* machines without emulation or binary translation.
*
* Copyright (C) 2006 Qumranet, Inc.
+ * Copyright 2010 Red Hat, Inc. and/or its affilates.
*
* Authors:
* Avi Kivity <avi@qumranet.com>
@@ -92,6 +93,12 @@ static bool kvm_rebooting;
static bool largepages_enabled = true;
+static struct page *hwpoison_page;
+static pfn_t hwpoison_pfn;
+
+static struct page *fault_page;
+static pfn_t fault_pfn;
+
inline int kvm_is_mmio_pfn(pfn_t pfn)
{
if (pfn_valid(pfn)) {
@@ -141,7 +148,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
raw_spin_lock(&kvm->requests_lock);
me = smp_processor_id();
kvm_for_each_vcpu(i, vcpu, kvm) {
- if (test_and_set_bit(req, &vcpu->requests))
+ if (kvm_make_check_request(req, vcpu))
continue;
cpu = vcpu->cpu;
if (cpus != NULL && cpu != -1 && cpu != me)
@@ -566,6 +573,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
new = old = *memslot;
+ new.id = mem->slot;
new.base_gfn = base_gfn;
new.npages = npages;
new.flags = mem->flags;
@@ -596,7 +604,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
/* Allocate if a slot is being created */
#ifndef CONFIG_S390
if (npages && !new.rmap) {
- new.rmap = vmalloc(npages * sizeof(struct page *));
+ new.rmap = vmalloc(npages * sizeof(*new.rmap));
if (!new.rmap)
goto out_free;
@@ -621,9 +629,9 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (new.lpage_info[i])
continue;
- lpages = 1 + (base_gfn + npages - 1) /
- KVM_PAGES_PER_HPAGE(level);
- lpages -= base_gfn / KVM_PAGES_PER_HPAGE(level);
+ lpages = 1 + ((base_gfn + npages - 1)
+ >> KVM_HPAGE_GFN_SHIFT(level));
+ lpages -= base_gfn >> KVM_HPAGE_GFN_SHIFT(level);
new.lpage_info[i] = vmalloc(lpages * sizeof(*new.lpage_info[i]));
@@ -633,9 +641,9 @@ int __kvm_set_memory_region(struct kvm *kvm,
memset(new.lpage_info[i], 0,
lpages * sizeof(*new.lpage_info[i]));
- if (base_gfn % KVM_PAGES_PER_HPAGE(level))
+ if (base_gfn & (KVM_PAGES_PER_HPAGE(level) - 1))
new.lpage_info[i][0].write_count = 1;
- if ((base_gfn+npages) % KVM_PAGES_PER_HPAGE(level))
+ if ((base_gfn+npages) & (KVM_PAGES_PER_HPAGE(level) - 1))
new.lpage_info[i][lpages - 1].write_count = 1;
ugfn = new.userspace_addr >> PAGE_SHIFT;
/*
@@ -810,16 +818,28 @@ EXPORT_SYMBOL_GPL(kvm_disable_largepages);
int is_error_page(struct page *page)
{
- return page == bad_page;
+ return page == bad_page || page == hwpoison_page || page == fault_page;
}
EXPORT_SYMBOL_GPL(is_error_page);
int is_error_pfn(pfn_t pfn)
{
- return pfn == bad_pfn;
+ return pfn == bad_pfn || pfn == hwpoison_pfn || pfn == fault_pfn;
}
EXPORT_SYMBOL_GPL(is_error_pfn);
+int is_hwpoison_pfn(pfn_t pfn)
+{
+ return pfn == hwpoison_pfn;
+}
+EXPORT_SYMBOL_GPL(is_hwpoison_pfn);
+
+int is_fault_pfn(pfn_t pfn)
+{
+ return pfn == fault_pfn;
+}
+EXPORT_SYMBOL_GPL(is_fault_pfn);
+
static inline unsigned long bad_hva(void)
{
return PAGE_OFFSET;
@@ -831,7 +851,7 @@ int kvm_is_error_hva(unsigned long addr)
}
EXPORT_SYMBOL_GPL(kvm_is_error_hva);
-struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn)
+struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
{
int i;
struct kvm_memslots *slots = kvm_memslots(kvm);
@@ -845,20 +865,13 @@ struct kvm_memory_slot *gfn_to_memslot_unaliased(struct kvm *kvm, gfn_t gfn)
}
return NULL;
}
-EXPORT_SYMBOL_GPL(gfn_to_memslot_unaliased);
-
-struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
-{
- gfn = unalias_gfn(kvm, gfn);
- return gfn_to_memslot_unaliased(kvm, gfn);
-}
+EXPORT_SYMBOL_GPL(gfn_to_memslot);
int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn)
{
int i;
struct kvm_memslots *slots = kvm_memslots(kvm);
- gfn = unalias_gfn_instantiation(kvm, gfn);
for (i = 0; i < KVM_MEMORY_SLOTS; ++i) {
struct kvm_memory_slot *memslot = &slots->memslots[i];
@@ -903,7 +916,6 @@ int memslot_id(struct kvm *kvm, gfn_t gfn)
struct kvm_memslots *slots = kvm_memslots(kvm);
struct kvm_memory_slot *memslot = NULL;
- gfn = unalias_gfn(kvm, gfn);
for (i = 0; i < slots->nmemslots; ++i) {
memslot = &slots->memslots[i];
@@ -924,8 +936,7 @@ unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn)
{
struct kvm_memory_slot *slot;
- gfn = unalias_gfn_instantiation(kvm, gfn);
- slot = gfn_to_memslot_unaliased(kvm, gfn);
+ slot = gfn_to_memslot(kvm, gfn);
if (!slot || slot->flags & KVM_MEMSLOT_INVALID)
return bad_hva();
return gfn_to_hva_memslot(slot, gfn);
@@ -946,13 +957,19 @@ static pfn_t hva_to_pfn(struct kvm *kvm, unsigned long addr)
struct vm_area_struct *vma;
down_read(&current->mm->mmap_sem);
+ if (is_hwpoison_address(addr)) {
+ up_read(&current->mm->mmap_sem);
+ get_page(hwpoison_page);
+ return page_to_pfn(hwpoison_page);
+ }
+
vma = find_vma(current->mm, addr);
if (vma == NULL || addr < vma->vm_start ||
!(vma->vm_flags & VM_PFNMAP)) {
up_read(&current->mm->mmap_sem);
- get_page(bad_page);
- return page_to_pfn(bad_page);
+ get_page(fault_page);
+ return page_to_pfn(fault_page);
}
pfn = ((addr - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
@@ -1187,8 +1204,7 @@ void mark_page_dirty(struct kvm *kvm, gfn_t gfn)
{
struct kvm_memory_slot *memslot;
- gfn = unalias_gfn(kvm, gfn);
- memslot = gfn_to_memslot_unaliased(kvm, gfn);
+ memslot = gfn_to_memslot(kvm, gfn);
if (memslot && memslot->dirty_bitmap) {
unsigned long rel_gfn = gfn - memslot->base_gfn;
@@ -1207,7 +1223,7 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE);
if (kvm_arch_vcpu_runnable(vcpu)) {
- set_bit(KVM_REQ_UNHALT, &vcpu->requests);
+ kvm_make_request(KVM_REQ_UNHALT, vcpu);
break;
}
if (kvm_cpu_has_pending_timer(vcpu))
@@ -1378,6 +1394,18 @@ static long kvm_vcpu_ioctl(struct file *filp,
if (vcpu->kvm->mm != current->mm)
return -EIO;
+
+#if defined(CONFIG_S390) || defined(CONFIG_PPC)
+ /*
+ * Special cases: vcpu ioctls that are asynchronous to vcpu execution,
+ * so vcpu_load() would break it.
+ */
+ if (ioctl == KVM_S390_INTERRUPT || ioctl == KVM_INTERRUPT)
+ return kvm_arch_vcpu_ioctl(filp, ioctl, arg);
+#endif
+
+
+ vcpu_load(vcpu);
switch (ioctl) {
case KVM_RUN:
r = -EINVAL;
@@ -1520,7 +1548,7 @@ out_free2:
goto out;
p = &sigset;
}
- r = kvm_vcpu_ioctl_set_sigmask(vcpu, &sigset);
+ r = kvm_vcpu_ioctl_set_sigmask(vcpu, p);
break;
}
case KVM_GET_FPU: {
@@ -1555,6 +1583,7 @@ out_free2:
r = kvm_arch_vcpu_ioctl(filp, ioctl, arg);
}
out:
+ vcpu_put(vcpu);
kfree(fpu);
kfree(kvm_sregs);
return r;
@@ -2197,6 +2226,24 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
bad_pfn = page_to_pfn(bad_page);
+ hwpoison_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+
+ if (hwpoison_page == NULL) {
+ r = -ENOMEM;
+ goto out_free_0;
+ }
+
+ hwpoison_pfn = page_to_pfn(hwpoison_page);
+
+ fault_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
+
+ if (fault_page == NULL) {
+ r = -ENOMEM;
+ goto out_free_0;
+ }
+
+ fault_pfn = page_to_pfn(fault_page);
+
if (!zalloc_cpumask_var(&cpus_hardware_enabled, GFP_KERNEL)) {
r = -ENOMEM;
goto out_free_0;
@@ -2269,6 +2316,10 @@ out_free_1:
out_free_0a:
free_cpumask_var(cpus_hardware_enabled);
out_free_0:
+ if (fault_page)
+ __free_page(fault_page);
+ if (hwpoison_page)
+ __free_page(hwpoison_page);
__free_page(bad_page);
out:
kvm_arch_exit();
@@ -2290,6 +2341,7 @@ void kvm_exit(void)
kvm_arch_hardware_unsetup();
kvm_arch_exit();
free_cpumask_var(cpus_hardware_enabled);
+ __free_page(hwpoison_page);
__free_page(bad_page);
}
EXPORT_SYMBOL_GPL(kvm_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-21 17:04:22 +0000