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Message-ID: <48500906.5070701@qumranet.com>
Date: Wed, 11 Jun 2008 20:19:02 +0300
From: Avi Kivity <avi@...ranet.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC: kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [GIT PULL][RESEND] KVM updates for Linux 2.6.26-rc5
Linus, please pull from the repo and branch at
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm.git
kvm-updates-2.6.26
to receive the KVM updates for 2.6.26-rc. These include updates for the
three new KVM archs, timer and interrupt injection fixes, a fix for
hypercall breakage on AMD, and better coexistence with VMWare Server.
Shortlog, diffstat, and diff follow.
Avi Kivity (4):
KVM: x86 emulator: fix hypercall return value on AMD
KVM: MMU: reschedule during shadow teardown
KVM: MMU: Fix printk() format string
KVM: MMU: Fix is_empty_shadow_page() check
Carsten Otte (3):
KVM: s390: fix interrupt delivery
KVM: s390: Send program check on access error
KVM: s390: Fix race condition in kvm_s390_handle_wait
Christian Borntraeger (3):
KVM: s390: use yield instead of schedule to implement diag 0x44
KVM: s390: fix locking order problem in enable_sie
KVM: s390: handle machine checks when guest is running
Eli Collins (1):
KVM: VMX: Clear CR4.VMXE in hardware_disable
Hollis Blanchard (5):
KVM: ppc: Remove duplicate function
KVM: ppc: add lwzx/stwz emulation
KVM: ppc: Remove unmatched kunmap() call
KVM: ppc: Use a read lock around MMU operations, and release it
on error
KVM: ppc: Report bad GFNs
Jes Sorensen (1):
KVM: ia64: fix zero extending for mmio ld1/2/4 emulation in KVM
Marcelo Tosatti (2):
KVM: migrate PIT timer
KVM: IOAPIC: only set remote_irr if interrupt was injected
arch/ia64/kvm/mmio.c | 3 +-
arch/powerpc/kvm/44x_tlb.c | 9 +++----
arch/powerpc/kvm/booke_guest.c | 33 ------------------------------
arch/powerpc/kvm/emulate.c | 12 ++++++++++
arch/s390/kvm/diag.c | 2 +-
arch/s390/kvm/interrupt.c | 7 ++++-
arch/s390/kvm/kvm-s390.c | 13 ++++++++++-
arch/s390/mm/pgtable.c | 44
++++++++++++++++++++++++---------------
arch/x86/kvm/i8254.c | 14 +++++++++++-
arch/x86/kvm/irq.c | 6 +++++
arch/x86/kvm/irq.h | 2 +
arch/x86/kvm/mmu.c | 3 +-
arch/x86/kvm/paging_tmpl.h | 2 +-
arch/x86/kvm/svm.c | 2 +-
arch/x86/kvm/vmx.c | 3 +-
arch/x86/kvm/x86.c | 2 +-
arch/x86/kvm/x86_emulate.c | 3 +-
drivers/s390/s390mach.c | 1 +
include/asm-powerpc/kvm_ppc.h | 1 +
include/linux/kvm_host.h | 2 +-
virt/kvm/ioapic.c | 21 ++++++++++---------
21 files changed, 106 insertions(+), 79 deletions(-)
diff --git a/arch/ia64/kvm/mmio.c b/arch/ia64/kvm/mmio.c
index 351bf70..7f1a858 100644
--- a/arch/ia64/kvm/mmio.c
+++ b/arch/ia64/kvm/mmio.c
@@ -159,7 +159,8 @@ static void mmio_access(struct kvm_vcpu *vcpu, u64
src_pa, u64 *dest,
if (p->u.ioreq.state == STATE_IORESP_READY) {
if (dir == IOREQ_READ)
- *dest = p->u.ioreq.data;
+ /* it's necessary to ensure zero extending */
+ *dest = p->u.ioreq.data & (~0UL >> (64-(s*8)));
} else
panic_vm(vcpu);
out:
diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index f5d7a5e..75dff7c 100644
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -116,8 +116,6 @@ static void kvmppc_44x_shadow_release(struct
kvm_vcpu *vcpu,
struct tlbe *stlbe = &vcpu->arch.shadow_tlb[index];
struct page *page = vcpu->arch.shadow_pages[index];
- kunmap(vcpu->arch.shadow_pages[index]);
-
if (get_tlb_v(stlbe)) {
if (kvmppc_44x_tlbe_is_writable(stlbe))
kvm_release_page_dirty(page);
@@ -144,18 +142,19 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64
gvaddr, gfn_t gfn, u64 asid,
stlbe = &vcpu->arch.shadow_tlb[victim];
/* Get reference to new page. */
- down_write(¤t->mm->mmap_sem);
+ down_read(¤t->mm->mmap_sem);
new_page = gfn_to_page(vcpu->kvm, gfn);
if (is_error_page(new_page)) {
- printk(KERN_ERR "Couldn't get guest page!\n");
+ printk(KERN_ERR "Couldn't get guest page for gfn %lx!\n", gfn);
kvm_release_page_clean(new_page);
+ up_read(¤t->mm->mmap_sem);
return;
}
hpaddr = page_to_phys(new_page);
/* Drop reference to old page. */
kvmppc_44x_shadow_release(vcpu, victim);
- up_write(¤t->mm->mmap_sem);
+ up_read(¤t->mm->mmap_sem);
vcpu->arch.shadow_pages[victim] = new_page;
diff --git a/arch/powerpc/kvm/booke_guest.c b/arch/powerpc/kvm/booke_guest.c
index 712d89a..9c8ad85 100644
--- a/arch/powerpc/kvm/booke_guest.c
+++ b/arch/powerpc/kvm/booke_guest.c
@@ -227,39 +227,6 @@ void kvmppc_check_and_deliver_interrupts(struct
kvm_vcpu *vcpu)
}
}
-static int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
-{
- enum emulation_result er;
- int r;
-
- er = kvmppc_emulate_instruction(run, vcpu);
- switch (er) {
- case EMULATE_DONE:
- /* Future optimization: only reload non-volatiles if they were
- * actually modified. */
- r = RESUME_GUEST_NV;
- break;
- case EMULATE_DO_MMIO:
- run->exit_reason = KVM_EXIT_MMIO;
- /* We must reload nonvolatiles because "update" load/store
- * instructions modify register state. */
- /* Future optimization: only reload non-volatiles if they were
- * actually modified. */
- r = RESUME_HOST_NV;
- break;
- case EMULATE_FAIL:
- /* XXX Deliver Program interrupt to guest. */
- printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
- vcpu->arch.last_inst);
- r = RESUME_HOST;
- break;
- default:
- BUG();
- }
-
- return r;
-}
-
/**
* kvmppc_handle_exit
*
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index a03fe0c..0000974 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -246,6 +246,11 @@ int kvmppc_emulate_instruction(struct kvm_run *run,
struct kvm_vcpu *vcpu)
case 31:
switch (get_xop(inst)) {
+ case 23: /* lwzx */
+ rt = get_rt(inst);
+ emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
+ break;
+
case 83: /* mfmsr */
rt = get_rt(inst);
vcpu->arch.gpr[rt] = vcpu->arch.msr;
@@ -267,6 +272,13 @@ int kvmppc_emulate_instruction(struct kvm_run *run,
struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
break;
+ case 151: /* stwx */
+ rs = get_rs(inst);
+ emulated = kvmppc_handle_store(run, vcpu,
+ vcpu->arch.gpr[rs],
+ 4, 1);
+ break;
+
case 163: /* wrteei */
vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
| (inst & MSR_EE);
diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
index f639a15..a0775e1 100644
--- a/arch/s390/kvm/diag.c
+++ b/arch/s390/kvm/diag.c
@@ -20,7 +20,7 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
VCPU_EVENT(vcpu, 5, "%s", "diag time slice end");
vcpu->stat.diagnose_44++;
vcpu_put(vcpu);
- schedule();
+ yield();
vcpu_load(vcpu);
return 0;
}
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index fcd1ed8..84a7fed 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -339,6 +339,11 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
if (kvm_cpu_has_interrupt(vcpu))
return 0;
+ __set_cpu_idle(vcpu);
+ spin_lock_bh(&vcpu->arch.local_int.lock);
+ vcpu->arch.local_int.timer_due = 0;
+ spin_unlock_bh(&vcpu->arch.local_int.lock);
+
if (psw_interrupts_disabled(vcpu)) {
VCPU_EVENT(vcpu, 3, "%s", "disabled wait");
__unset_cpu_idle(vcpu);
@@ -366,8 +371,6 @@ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
no_timer:
spin_lock_bh(&vcpu->arch.local_int.float_int->lock);
spin_lock_bh(&vcpu->arch.local_int.lock);
- __set_cpu_idle(vcpu);
- vcpu->arch.local_int.timer_due = 0;
add_wait_queue(&vcpu->arch.local_int.wq, &wait);
while (list_empty(&vcpu->arch.local_int.list) &&
list_empty(&vcpu->arch.local_int.float_int->list) &&
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 0ac36a6..6558b09 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -423,6 +423,8 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu,
return -EINVAL; /* not implemented yet */
}
+extern void s390_handle_mcck(void);
+
static void __vcpu_run(struct kvm_vcpu *vcpu)
{
memcpy(&vcpu->arch.sie_block->gg14, &vcpu->arch.guest_gprs[14], 16);
@@ -430,13 +432,21 @@ static void __vcpu_run(struct kvm_vcpu *vcpu)
if (need_resched())
schedule();
+ if (test_thread_flag(TIF_MCCK_PENDING))
+ s390_handle_mcck();
+
+ kvm_s390_deliver_pending_interrupts(vcpu);
+
vcpu->arch.sie_block->icptcode = 0;
local_irq_disable();
kvm_guest_enter();
local_irq_enable();
VCPU_EVENT(vcpu, 6, "entering sie flags %x",
atomic_read(&vcpu->arch.sie_block->cpuflags));
- sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs);
+ if (sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs)) {
+ VCPU_EVENT(vcpu, 3, "%s", "fault in sie instruction");
+ kvm_s390_inject_program_int(vcpu, PGM_ADDRESSING);
+ }
VCPU_EVENT(vcpu, 6, "exit sie icptcode %d",
vcpu->arch.sie_block->icptcode);
local_irq_disable();
@@ -475,7 +485,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu,
struct kvm_run *kvm_run)
might_sleep();
do {
- kvm_s390_deliver_pending_interrupts(vcpu);
__vcpu_run(vcpu);
rc = kvm_handle_sie_intercept(vcpu);
} while (!signal_pending(current) && !rc);
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index 5c1aea9..3d98ba8 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -254,36 +254,46 @@ void disable_noexec(struct mm_struct *mm, struct
task_struct *tsk)
int s390_enable_sie(void)
{
struct task_struct *tsk = current;
- struct mm_struct *mm;
- int rc;
+ struct mm_struct *mm, *old_mm;
- task_lock(tsk);
-
- rc = 0;
+ /* Do we have pgstes? if yes, we are done */
if (tsk->mm->context.pgstes)
- goto unlock;
+ return 0;
- rc = -EINVAL;
+ /* lets check if we are allowed to replace the mm */
+ task_lock(tsk);
if (!tsk->mm || atomic_read(&tsk->mm->mm_users) > 1 ||
- tsk->mm != tsk->active_mm || tsk->mm->ioctx_list)
- goto unlock;
+ tsk->mm != tsk->active_mm || tsk->mm->ioctx_list) {
+ task_unlock(tsk);
+ return -EINVAL;
+ }
+ task_unlock(tsk);
- tsk->mm->context.pgstes = 1; /* dirty little tricks .. */
+ /* we copy the mm with pgstes enabled */
+ tsk->mm->context.pgstes = 1;
mm = dup_mm(tsk);
tsk->mm->context.pgstes = 0;
-
- rc = -ENOMEM;
if (!mm)
- goto unlock;
- mmput(tsk->mm);
+ return -ENOMEM;
+
+ /* Now lets check again if somebody attached ptrace etc */
+ task_lock(tsk);
+ if (!tsk->mm || atomic_read(&tsk->mm->mm_users) > 1 ||
+ tsk->mm != tsk->active_mm || tsk->mm->ioctx_list) {
+ mmput(mm);
+ task_unlock(tsk);
+ return -EINVAL;
+ }
+
+ /* ok, we are alone. No ptrace, no threads, etc. */
+ old_mm = tsk->mm;
tsk->mm = tsk->active_mm = mm;
preempt_disable();
update_mm(mm, tsk);
cpu_set(smp_processor_id(), mm->cpu_vm_mask);
preempt_enable();
- rc = 0;
-unlock:
task_unlock(tsk);
- return rc;
+ mmput(old_mm);
+ return 0;
}
EXPORT_SYMBOL_GPL(s390_enable_sie);
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index 7c077a9..f2f5d26 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -200,7 +200,6 @@ int __pit_timer_fn(struct kvm_kpit_state *ps)
atomic_inc(&pt->pending);
smp_mb__after_atomic_inc();
- /* FIXME: handle case where the guest is in guest mode */
if (vcpu0 && waitqueue_active(&vcpu0->wq)) {
vcpu0->arch.mp_state = KVM_MP_STATE_RUNNABLE;
wake_up_interruptible(&vcpu0->wq);
@@ -237,6 +236,19 @@ static enum hrtimer_restart pit_timer_fn(struct
hrtimer *data)
return HRTIMER_NORESTART;
}
+void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu)
+{
+ struct kvm_pit *pit = vcpu->kvm->arch.vpit;
+ struct hrtimer *timer;
+
+ if (vcpu->vcpu_id != 0 || !pit)
+ return;
+
+ timer = &pit->pit_state.pit_timer.timer;
+ if (hrtimer_cancel(timer))
+ hrtimer_start(timer, timer->expires, HRTIMER_MODE_ABS);
+}
+
static void destroy_pit_timer(struct kvm_kpit_timer *pt)
{
pr_debug("pit: execute del timer!\n");
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index ce1f583..76d736b 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -94,3 +94,9 @@ void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
/* TODO: PIT, RTC etc. */
}
EXPORT_SYMBOL_GPL(kvm_timer_intr_post);
+
+void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
+{
+ __kvm_migrate_apic_timer(vcpu);
+ __kvm_migrate_pit_timer(vcpu);
+}
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 1802134..2a15be2 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -84,6 +84,8 @@ void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu);
+void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu);
+void __kvm_migrate_timers(struct kvm_vcpu *vcpu);
int pit_has_pending_timer(struct kvm_vcpu *vcpu);
int apic_has_pending_timer(struct kvm_vcpu *vcpu);
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 7246b60..ee3f530 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -658,7 +658,7 @@ static int is_empty_shadow_page(u64 *spt)
u64 *end;
for (pos = spt, end = pos + PAGE_SIZE / sizeof(u64); pos != end; pos++)
- if (*pos != shadow_trap_nonpresent_pte) {
+ if (is_shadow_present_pte(*pos)) {
printk(KERN_ERR "%s: %p %llx\n", __func__,
pos, *pos);
return 0;
@@ -1858,6 +1858,7 @@ static void free_mmu_pages(struct kvm_vcpu *vcpu)
sp = container_of(vcpu->kvm->arch.active_mmu_pages.next,
struct kvm_mmu_page, link);
kvm_mmu_zap_page(vcpu->kvm, sp);
+ cond_resched();
}
free_page((unsigned long)vcpu->arch.mmu.pae_root);
}
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 156fe10..934c7b6 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -418,7 +418,7 @@ static int FNAME(page_fault)(struct kvm_vcpu *vcpu,
gva_t addr,
/* mmio */
if (is_error_pfn(pfn)) {
- pgprintk("gfn %x is mmio\n", walker.gfn);
+ pgprintk("gfn %lx is mmio\n", walker.gfn);
kvm_release_pfn_clean(pfn);
return 1;
}
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index ab22615..6b0d5fa 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -688,7 +688,7 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int
cpu)
delta = vcpu->arch.host_tsc - tsc_this;
svm->vmcb->control.tsc_offset += delta;
vcpu->cpu = cpu;
- kvm_migrate_apic_timer(vcpu);
+ kvm_migrate_timers(vcpu);
}
for (i = 0; i < NR_HOST_SAVE_USER_MSRS; i++)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index bfe4db1..02efbe7 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -608,7 +608,7 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int
cpu)
if (vcpu->cpu != cpu) {
vcpu_clear(vmx);
- kvm_migrate_apic_timer(vcpu);
+ kvm_migrate_timers(vcpu);
vpid_sync_vcpu_all(vmx);
}
@@ -1036,6 +1036,7 @@ static void hardware_enable(void *garbage)
static void hardware_disable(void *garbage)
{
asm volatile (ASM_VMX_VMXOFF : : : "cc");
+ write_cr4(read_cr4() & ~X86_CR4_VMXE);
}
static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 21338bd..00acf13 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2758,7 +2758,7 @@ again:
if (vcpu->requests) {
if (test_and_clear_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests))
- __kvm_migrate_apic_timer(vcpu);
+ __kvm_migrate_timers(vcpu);
if (test_and_clear_bit(KVM_REQ_REPORT_TPR_ACCESS,
&vcpu->requests)) {
kvm_run->exit_reason = KVM_EXIT_TPR_ACCESS;
diff --git a/arch/x86/kvm/x86_emulate.c b/arch/x86/kvm/x86_emulate.c
index 8a96320..932f216 100644
--- a/arch/x86/kvm/x86_emulate.c
+++ b/arch/x86/kvm/x86_emulate.c
@@ -1727,7 +1727,8 @@ twobyte_insn:
if (rc)
goto done;
- kvm_emulate_hypercall(ctxt->vcpu);
+ /* Let the processor re-execute the fixed hypercall */
+ c->eip = ctxt->vcpu->arch.rip;
/* Disable writeback. */
c->dst.type = OP_NONE;
break;
diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index 5080f34..5bfbe76 100644
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -207,6 +207,7 @@ s390_handle_mcck(void)
do_exit(SIGSEGV);
}
}
+EXPORT_SYMBOL_GPL(s390_handle_mcck);
/*
* returns 0 if all registers could be validated
diff --git a/include/asm-powerpc/kvm_ppc.h b/include/asm-powerpc/kvm_ppc.h
index b35a7e3..5a21115 100644
--- a/include/asm-powerpc/kvm_ppc.h
+++ b/include/asm-powerpc/kvm_ppc.h
@@ -57,6 +57,7 @@ extern int kvmppc_handle_store(struct kvm_run *run,
struct kvm_vcpu *vcpu,
extern int kvmppc_emulate_instruction(struct kvm_run *run,
struct kvm_vcpu *vcpu);
+extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn,
u64 asid, u32 flags);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 3989789..092b1b2 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -297,7 +297,7 @@ static inline gpa_t gfn_to_gpa(gfn_t gfn)
return (gpa_t)gfn << PAGE_SHIFT;
}
-static inline void kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
+static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu)
{
set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests);
}
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index 4232fd7..98778cb 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -45,7 +45,7 @@
#else
#define ioapic_debug(fmt, arg...)
#endif
-static void ioapic_deliver(struct kvm_ioapic *vioapic, int irq);
+static int ioapic_deliver(struct kvm_ioapic *vioapic, int irq);
static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
unsigned long addr,
@@ -89,8 +89,8 @@ static void ioapic_service(struct kvm_ioapic *ioapic,
unsigned int idx)
pent = &ioapic->redirtbl[idx];
if (!pent->fields.mask) {
- ioapic_deliver(ioapic, idx);
- if (pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
+ int injected = ioapic_deliver(ioapic, idx);
+ if (injected && pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
pent->fields.remote_irr = 1;
}
if (!pent->fields.trig_mode)
@@ -133,7 +133,7 @@ static void ioapic_write_indirect(struct kvm_ioapic
*ioapic, u32 val)
}
}
-static void ioapic_inj_irq(struct kvm_ioapic *ioapic,
+static int ioapic_inj_irq(struct kvm_ioapic *ioapic,
struct kvm_vcpu *vcpu,
u8 vector, u8 trig_mode, u8 delivery_mode)
{
@@ -143,7 +143,7 @@ static void ioapic_inj_irq(struct kvm_ioapic *ioapic,
ASSERT((delivery_mode == IOAPIC_FIXED) ||
(delivery_mode == IOAPIC_LOWEST_PRIORITY));
- kvm_apic_set_irq(vcpu, vector, trig_mode);
+ return kvm_apic_set_irq(vcpu, vector, trig_mode);
}
static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
@@ -186,7 +186,7 @@ static u32 ioapic_get_delivery_bitmask(struct
kvm_ioapic *ioapic, u8 dest,
return mask;
}
-static void ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
+static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
{
u8 dest = ioapic->redirtbl[irq].fields.dest_id;
u8 dest_mode = ioapic->redirtbl[irq].fields.dest_mode;
@@ -195,7 +195,7 @@ static void ioapic_deliver(struct kvm_ioapic
*ioapic, int irq)
u8 trig_mode = ioapic->redirtbl[irq].fields.trig_mode;
u32 deliver_bitmask;
struct kvm_vcpu *vcpu;
- int vcpu_id;
+ int vcpu_id, r = 0;
ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
"vector=%x trig_mode=%x\n",
@@ -204,7 +204,7 @@ static void ioapic_deliver(struct kvm_ioapic
*ioapic, int irq)
deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode);
if (!deliver_bitmask) {
ioapic_debug("no target on destination\n");
- return;
+ return 0;
}
switch (delivery_mode) {
@@ -216,7 +216,7 @@ static void ioapic_deliver(struct kvm_ioapic
*ioapic, int irq)
vcpu = ioapic->kvm->vcpus[0];
#endif
if (vcpu != NULL)
- ioapic_inj_irq(ioapic, vcpu, vector,
+ r = ioapic_inj_irq(ioapic, vcpu, vector,
trig_mode, delivery_mode);
else
ioapic_debug("null lowest prio vcpu: "
@@ -234,7 +234,7 @@ static void ioapic_deliver(struct kvm_ioapic
*ioapic, int irq)
deliver_bitmask &= ~(1 << vcpu_id);
vcpu = ioapic->kvm->vcpus[vcpu_id];
if (vcpu) {
- ioapic_inj_irq(ioapic, vcpu, vector,
+ r = ioapic_inj_irq(ioapic, vcpu, vector,
trig_mode, delivery_mode);
}
}
@@ -246,6 +246,7 @@ static void ioapic_deliver(struct kvm_ioapic
*ioapic, int irq)
delivery_mode);
break;
}
+ return r;
}
void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
--
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