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Merge branch 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Browse Source 
* 'kvm-updates/2.6.31' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Avoid redelivery of edge interrupt before next edge
  KVM: MMU: limit rmap chain length
  KVM: ia64: fix build failures due to ia64/unsigned long mismatches
  KVM: Make KVM_HPAGES_PER_HPAGE unsigned long to avoid build error on powerpc
  KVM: fix ack not being delivered when msi present
  KVM: s390: fix wait_queue handling
  KVM: VMX: Fix locking imbalance on emulation failure
  KVM: VMX: Fix locking order in handle_invalid_guest_state
  KVM: MMU: handle n_free_mmu_pages > n_alloc_mmu_pages in kvm_mmu_change_mmu_pages
  KVM: SVM: force new asid on vcpu migration
  KVM: x86: verify MTRR/PAT validity
  KVM: PIT: fix kpit_elapsed division by zero
  KVM: Fix KVM_GET_MSR_INDEX_LIST
This commit is contained in:
Linus Torvalds 2009-08-09 14:58:21 -07:00
commit 17d11ba149
13 changed files with 110 additions and 41 deletions
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6
arch/ia64/kvm/mmio.c
View File

@ -247,7 +247,8 @@ void emulate_io_inst(struct kvm_vcpu *vcpu, u64 padr, u64 ma)
vcpu_get_fpreg(vcpu, inst.M9.f2, &v);
/* Write high word. FIXME: this is a kludge! */
v.u.bits[1] &= 0x3ffff;
mmio_access(vcpu, padr + 8, &v.u.bits[1], 8, ma, IOREQ_WRITE);
mmio_access(vcpu, padr + 8, (u64 *)&v.u.bits[1], 8,
ma, IOREQ_WRITE);
data = v.u.bits[0];
size = 3;
} else if (inst.M10.major == 7 && inst.M10.x6 == 0x3B) {
@ -265,7 +266,8 @@ void emulate_io_inst(struct kvm_vcpu *vcpu, u64 padr, u64 ma)
/* Write high word.FIXME: this is a kludge! */
v.u.bits[1] &= 0x3ffff;
mmio_access(vcpu, padr + 8, &v.u.bits[1], 8, ma, IOREQ_WRITE);
mmio_access(vcpu, padr + 8, (u64 *)&v.u.bits[1],
8, ma, IOREQ_WRITE);
data = v.u.bits[0];
size = 3;
} else if (inst.M10.major == 7 && inst.M10.x6 == 0x31) {

6
arch/ia64/kvm/vcpu.c
View File

@ -461,7 +461,7 @@ void setreg(unsigned long regnum, unsigned long val,
u64 vcpu_get_gr(struct kvm_vcpu *vcpu, unsigned long reg)
{
struct kvm_pt_regs *regs = vcpu_regs(vcpu);
u64 val;
unsigned long val;
if (!reg)
return 0;
@ -469,7 +469,7 @@ u64 vcpu_get_gr(struct kvm_vcpu *vcpu, unsigned long reg)
return val;
}
void vcpu_set_gr(struct kvm_vcpu *vcpu, u64 reg, u64 value, int nat)
void vcpu_set_gr(struct kvm_vcpu *vcpu, unsigned long reg, u64 value, int nat)
{
struct kvm_pt_regs *regs = vcpu_regs(vcpu);
long sof = (regs->cr_ifs) & 0x7f;
@ -1072,7 +1072,7 @@ void kvm_ttag(struct kvm_vcpu *vcpu, INST64 inst)
vcpu_set_gr(vcpu, inst.M46.r1, tag, 0);
}
int vcpu_tpa(struct kvm_vcpu *vcpu, u64 vadr, u64 *padr)
int vcpu_tpa(struct kvm_vcpu *vcpu, u64 vadr, unsigned long *padr)
{
struct thash_data *data;
union ia64_isr visr, pt_isr;

13
arch/ia64/kvm/vcpu.h
View File

@ -686,14 +686,15 @@ static inline int highest_inservice_irq(struct kvm_vcpu *vcpu)
return highest_bits((int *)&(VMX(vcpu, insvc[0])));
}
extern void vcpu_get_fpreg(struct kvm_vcpu *vcpu, u64 reg,
extern void vcpu_get_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
struct ia64_fpreg *val);
extern void vcpu_set_fpreg(struct kvm_vcpu *vcpu, u64 reg,
extern void vcpu_set_fpreg(struct kvm_vcpu *vcpu, unsigned long reg,
struct ia64_fpreg *val);
extern u64 vcpu_get_gr(struct kvm_vcpu *vcpu, u64 reg);
extern void vcpu_set_gr(struct kvm_vcpu *vcpu, u64 reg, u64 val, int nat);
extern u64 vcpu_get_psr(struct kvm_vcpu *vcpu);
extern void vcpu_set_psr(struct kvm_vcpu *vcpu, u64 val);
extern u64 vcpu_get_gr(struct kvm_vcpu *vcpu, unsigned long reg);
extern void vcpu_set_gr(struct kvm_vcpu *vcpu, unsigned long reg,
u64 val, int nat);
extern unsigned long vcpu_get_psr(struct kvm_vcpu *vcpu);
extern void vcpu_set_psr(struct kvm_vcpu *vcpu, unsigned long val);
extern u64 vcpu_thash(struct kvm_vcpu *vcpu, u64 vadr);
extern void vcpu_bsw0(struct kvm_vcpu *vcpu);
extern void thash_vhpt_insert(struct kvm_vcpu *v, u64 pte,

2
arch/powerpc/include/asm/kvm_host.h
View File

@ -34,7 +34,7 @@
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
/* We don't currently support large pages. */
#define KVM_PAGES_PER_HPAGE (1<<31)
#define KVM_PAGES_PER_HPAGE (1UL << 31)
struct kvm;
struct kvm_run;

2
arch/s390/kvm/interrupt.c
View File

@ -386,7 +386,7 @@ no_timer:
}
__unset_cpu_idle(vcpu);
__set_current_state(TASK_RUNNING);
remove_wait_queue(&vcpu->wq, &wait);
remove_wait_queue(&vcpu->arch.local_int.wq, &wait);
spin_unlock_bh(&vcpu->arch.local_int.lock);
spin_unlock(&vcpu->arch.local_int.float_int->lock);
hrtimer_try_to_cancel(&vcpu->arch.ckc_timer);

3
arch/x86/kvm/i8254.c
View File

@ -104,6 +104,9 @@ static s64 __kpit_elapsed(struct kvm *kvm)
ktime_t remaining;
struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;
if (!ps->pit_timer.period)
return 0;
/*
* The Counter does not stop when it reaches zero. In
* Modes 0, 1, 4, and 5 the Counter ``wraps around'' to

48
arch/x86/kvm/mmu.c
View File

@ -489,16 +489,20 @@ static unsigned long *gfn_to_rmap(struct kvm *kvm, gfn_t gfn, int lpage)
*
* If rmapp bit zero is one, (then rmap & ~1) points to a struct kvm_rmap_desc
* containing more mappings.
*
* Returns the number of rmap entries before the spte was added or zero if
* the spte was not added.
*
*/
static void rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn, int lpage)
static int rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn, int lpage)
{
struct kvm_mmu_page *sp;
struct kvm_rmap_desc *desc;
unsigned long *rmapp;
int i;
int i, count = 0;
if (!is_rmap_pte(*spte))
return;
return count;
gfn = unalias_gfn(vcpu->kvm, gfn);
sp = page_header(__pa(spte));
sp->gfns[spte - sp->spt] = gfn;
@ -515,8 +519,10 @@ static void rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn, int lpage)
} else {
rmap_printk("rmap_add: %p %llx many->many\n", spte, *spte);
desc = (struct kvm_rmap_desc *)(*rmapp & ~1ul);
while (desc->shadow_ptes[RMAP_EXT-1] && desc->more)
while (desc->shadow_ptes[RMAP_EXT-1] && desc->more) {
desc = desc->more;
count += RMAP_EXT;
}
if (desc->shadow_ptes[RMAP_EXT-1]) {
desc->more = mmu_alloc_rmap_desc(vcpu);
desc = desc->more;
@ -525,6 +531,7 @@ static void rmap_add(struct kvm_vcpu *vcpu, u64 *spte, gfn_t gfn, int lpage)
;
desc->shadow_ptes[i] = spte;
}
return count;
}
static void rmap_desc_remove_entry(unsigned long *rmapp,
@ -754,6 +761,19 @@ static int kvm_age_rmapp(struct kvm *kvm, unsigned long *rmapp)
return young;
}
#define RMAP_RECYCLE_THRESHOLD 1000
static void rmap_recycle(struct kvm_vcpu *vcpu, gfn_t gfn, int lpage)
{
unsigned long *rmapp;
gfn = unalias_gfn(vcpu->kvm, gfn);
rmapp = gfn_to_rmap(vcpu->kvm, gfn, lpage);
kvm_unmap_rmapp(vcpu->kvm, rmapp);
kvm_flush_remote_tlbs(vcpu->kvm);
}
int kvm_age_hva(struct kvm *kvm, unsigned long hva)
{
return kvm_handle_hva(kvm, hva, kvm_age_rmapp);
@ -1407,24 +1427,25 @@ static int kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp)
*/
void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages)
{
int used_pages;
used_pages = kvm->arch.n_alloc_mmu_pages - kvm->arch.n_free_mmu_pages;
used_pages = max(0, used_pages);
/*
* If we set the number of mmu pages to be smaller be than the
* number of actived pages , we must to free some mmu pages before we
* change the value
*/
if ((kvm->arch.n_alloc_mmu_pages - kvm->arch.n_free_mmu_pages) >
kvm_nr_mmu_pages) {
int n_used_mmu_pages = kvm->arch.n_alloc_mmu_pages
- kvm->arch.n_free_mmu_pages;
while (n_used_mmu_pages > kvm_nr_mmu_pages) {
if (used_pages > kvm_nr_mmu_pages) {
while (used_pages > kvm_nr_mmu_pages) {
struct kvm_mmu_page *page;
page = container_of(kvm->arch.active_mmu_pages.prev,
struct kvm_mmu_page, link);
kvm_mmu_zap_page(kvm, page);
n_used_mmu_pages--;
used_pages--;
}
kvm->arch.n_free_mmu_pages = 0;
}
@ -1740,6 +1761,7 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
{
int was_rmapped = 0;
int was_writeble = is_writeble_pte(*shadow_pte);
int rmap_count;
pgprintk("%s: spte %llx access %x write_fault %d"
" user_fault %d gfn %lx\n",
@ -1781,9 +1803,11 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte,
page_header_update_slot(vcpu->kvm, shadow_pte, gfn);
if (!was_rmapped) {
rmap_add(vcpu, shadow_pte, gfn, largepage);
rmap_count = rmap_add(vcpu, shadow_pte, gfn, largepage);
if (!is_rmap_pte(*shadow_pte))
kvm_release_pfn_clean(pfn);
if (rmap_count > RMAP_RECYCLE_THRESHOLD)
rmap_recycle(vcpu, gfn, largepage);
} else {
if (was_writeble)
kvm_release_pfn_dirty(pfn);

6
arch/x86/kvm/svm.c
View File

@ -711,6 +711,7 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
svm->vmcb->control.tsc_offset += delta;
vcpu->cpu = cpu;
kvm_migrate_timers(vcpu);
svm->asid_generation = 0;
}
for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
@ -1031,7 +1032,6 @@ static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *svm_data)
svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID;
}
svm->vcpu.cpu = svm_data->cpu;
svm->asid_generation = svm_data->asid_generation;
svm->vmcb->control.asid = svm_data->next_asid++;
}
@ -2300,8 +2300,8 @@ static void pre_svm_run(struct vcpu_svm *svm)
struct svm_cpu_data *svm_data = per_cpu(svm_data, cpu);
svm->vmcb->control.tlb_ctl = TLB_CONTROL_DO_NOTHING;
if (svm->vcpu.cpu != cpu ||
svm->asid_generation != svm_data->asid_generation)
/* FIXME: handle wraparound of asid_generation */
if (svm->asid_generation != svm_data->asid_generation)
new_asid(svm, svm_data);
}

6
arch/x86/kvm/vmx.c
View File

@ -3157,8 +3157,8 @@ static void handle_invalid_guest_state(struct kvm_vcpu *vcpu,
struct vcpu_vmx *vmx = to_vmx(vcpu);
enum emulation_result err = EMULATE_DONE;
preempt_enable();
local_irq_enable();
preempt_enable();
while (!guest_state_valid(vcpu)) {
err = emulate_instruction(vcpu, kvm_run, 0, 0, 0);
@ -3168,7 +3168,7 @@ static void handle_invalid_guest_state(struct kvm_vcpu *vcpu,
if (err != EMULATE_DONE) {
kvm_report_emulation_failure(vcpu, "emulation failure");
return;
break;
}
if (signal_pending(current))
@ -3177,8 +3177,8 @@ static void handle_invalid_guest_state(struct kvm_vcpu *vcpu,
schedule();
}
local_irq_disable();
preempt_disable();
local_irq_disable();
vmx->invalid_state_emulation_result = err;
}

44
arch/x86/kvm/x86.c
View File

@ -704,11 +704,48 @@ static bool msr_mtrr_valid(unsigned msr)
return false;
}
static bool valid_pat_type(unsigned t)
{
return t < 8 && (1 << t) & 0xf3; /* 0, 1, 4, 5, 6, 7 */
}
static bool valid_mtrr_type(unsigned t)
{
return t < 8 && (1 << t) & 0x73; /* 0, 1, 4, 5, 6 */
}
static bool mtrr_valid(struct kvm_vcpu *vcpu, u32 msr, u64 data)
{
int i;
if (!msr_mtrr_valid(msr))
return false;
if (msr == MSR_IA32_CR_PAT) {
for (i = 0; i < 8; i++)
if (!valid_pat_type((data >> (i * 8)) & 0xff))
return false;
return true;
} else if (msr == MSR_MTRRdefType) {
if (data & ~0xcff)
return false;
return valid_mtrr_type(data & 0xff);
} else if (msr >= MSR_MTRRfix64K_00000 && msr <= MSR_MTRRfix4K_F8000) {
for (i = 0; i < 8 ; i++)
if (!valid_mtrr_type((data >> (i * 8)) & 0xff))
return false;
return true;
}
/* variable MTRRs */
return valid_mtrr_type(data & 0xff);
}
static int set_msr_mtrr(struct kvm_vcpu *vcpu, u32 msr, u64 data)
{
u64 *p = (u64 *)&vcpu->arch.mtrr_state.fixed_ranges;
if (!msr_mtrr_valid(msr))
if (!mtrr_valid(vcpu, msr, data))
return 1;
if (msr == MSR_MTRRdefType) {
@ -1079,14 +1116,13 @@ long kvm_arch_dev_ioctl(struct file *filp,
if (copy_to_user(user_msr_list, &msr_list, sizeof msr_list))
goto out;
r = -E2BIG;
if (n < num_msrs_to_save)
if (n < msr_list.nmsrs)
goto out;
r = -EFAULT;
if (copy_to_user(user_msr_list->indices, &msrs_to_save,
num_msrs_to_save * sizeof(u32)))
goto out;
if (copy_to_user(user_msr_list->indices
+ num_msrs_to_save * sizeof(u32),
if (copy_to_user(user_msr_list->indices + num_msrs_to_save,
&emulated_msrs,
ARRAY_SIZE(emulated_msrs) * sizeof(u32)))
goto out;

1
include/linux/kvm_host.h
View File

@ -110,6 +110,7 @@ struct kvm_memory_slot {
struct kvm_kernel_irq_routing_entry {
u32 gsi;
u32 type;
int (*set)(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int level);
union {

10
virt/kvm/ioapic.c
View File

@ -95,8 +95,6 @@ static int ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx)
if (injected && pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
pent->fields.remote_irr = 1;
}
if (!pent->fields.trig_mode)
ioapic->irr &= ~(1 << idx);
return injected;
}
@ -136,7 +134,8 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
mask_after = ioapic->redirtbl[index].fields.mask;
if (mask_before != mask_after)
kvm_fire_mask_notifiers(ioapic->kvm, index, mask_after);
if (ioapic->irr & (1 << index))
if (ioapic->redirtbl[index].fields.trig_mode == IOAPIC_LEVEL_TRIG
&& ioapic->irr & (1 << index))
ioapic_service(ioapic, index);
break;
}
@ -184,9 +183,10 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
if (!level)
ioapic->irr &= ~mask;
else {
int edge = (entry.fields.trig_mode == IOAPIC_EDGE_TRIG);
ioapic->irr |= mask;
if ((!entry.fields.trig_mode && old_irr != ioapic->irr)
|| !entry.fields.remote_irr)
if ((edge && old_irr != ioapic->irr) ||
(!edge && !entry.fields.remote_irr))
ret = ioapic_service(ioapic, irq);
}
}

4
virt/kvm/irq_comm.c
View File

@ -160,7 +160,8 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
unsigned gsi = pin;
list_for_each_entry(e, &kvm->irq_routing, link)
if (e->irqchip.irqchip == irqchip &&
if (e->type == KVM_IRQ_ROUTING_IRQCHIP &&
e->irqchip.irqchip == irqchip &&
e->irqchip.pin == pin) {
gsi = e->gsi;
break;
@ -259,6 +260,7 @@ static int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
int delta;
e->gsi = ue->gsi;
e->type = ue->type;
switch (ue->type) {
case KVM_IRQ_ROUTING_IRQCHIP:
delta = 0;