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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-24 23:17:30 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-24 23:17:30 (GMT) |
commit | 07acfc2a9349a8ce45b236c2624dad452001966b (patch) | |
tree | c40f3eaac18a8320e65af220979223b5cd632b1b /arch/x86/kvm/i8254.c | |
parent | b5f4035adfffbcc6b478de5b8c44b618b3124aff (diff) | |
parent | 322728e55aa7834e2fab2786b76df183c4843a12 (diff) | |
download | linux-fsl-qoriq-07acfc2a9349a8ce45b236c2624dad452001966b.tar.xz |
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM changes from Avi Kivity:
"Changes include additional instruction emulation, page-crossing MMIO,
faster dirty logging, preventing the watchdog from killing a stopped
guest, module autoload, a new MSI ABI, and some minor optimizations
and fixes. Outside x86 we have a small s390 and a very large ppc
update.
Regarding the new (for kvm) rebaseless workflow, some of the patches
that were merged before we switch trees had to be rebased, while
others are true pulls. In either case the signoffs should be correct
now."
Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
arch/powerpc/kvm/book3s_segment.S and arch/x86/include/asm/kvm_para.h.
I suspect the kvm_para.h resolution ends up doing the "do I have cpuid"
check effectively twice (it was done differently in two different
commits), but better safe than sorry ;)
* 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (125 commits)
KVM: make asm-generic/kvm_para.h have an ifdef __KERNEL__ block
KVM: s390: onereg for timer related registers
KVM: s390: epoch difference and TOD programmable field
KVM: s390: KVM_GET/SET_ONEREG for s390
KVM: s390: add capability indicating COW support
KVM: Fix mmu_reload() clash with nested vmx event injection
KVM: MMU: Don't use RCU for lockless shadow walking
KVM: VMX: Optimize %ds, %es reload
KVM: VMX: Fix %ds/%es clobber
KVM: x86 emulator: convert bsf/bsr instructions to emulate_2op_SrcV_nobyte()
KVM: VMX: unlike vmcs on fail path
KVM: PPC: Emulator: clean up SPR reads and writes
KVM: PPC: Emulator: clean up instruction parsing
kvm/powerpc: Add new ioctl to retreive server MMU infos
kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM
KVM: PPC: bookehv: Fix r8/r13 storing in level exception handler
KVM: PPC: Book3S: Enable IRQs during exit handling
KVM: PPC: Fix PR KVM on POWER7 bare metal
KVM: PPC: Fix stbux emulation
KVM: PPC: bookehv: Use lwz/stw instead of PPC_LL/PPC_STL for 32-bit fields
...
Diffstat (limited to 'arch/x86/kvm/i8254.c')
-rw-r--r-- | arch/x86/kvm/i8254.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index d68f99d..adba28f 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -34,7 +34,6 @@ #include <linux/kvm_host.h> #include <linux/slab.h> -#include <linux/workqueue.h> #include "irq.h" #include "i8254.h" @@ -249,7 +248,7 @@ static void kvm_pit_ack_irq(struct kvm_irq_ack_notifier *kian) /* in this case, we had multiple outstanding pit interrupts * that we needed to inject. Reinject */ - queue_work(ps->pit->wq, &ps->pit->expired); + queue_kthread_work(&ps->pit->worker, &ps->pit->expired); ps->irq_ack = 1; spin_unlock(&ps->inject_lock); } @@ -270,7 +269,7 @@ void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu) static void destroy_pit_timer(struct kvm_pit *pit) { hrtimer_cancel(&pit->pit_state.pit_timer.timer); - cancel_work_sync(&pit->expired); + flush_kthread_work(&pit->expired); } static bool kpit_is_periodic(struct kvm_timer *ktimer) @@ -284,7 +283,7 @@ static struct kvm_timer_ops kpit_ops = { .is_periodic = kpit_is_periodic, }; -static void pit_do_work(struct work_struct *work) +static void pit_do_work(struct kthread_work *work) { struct kvm_pit *pit = container_of(work, struct kvm_pit, expired); struct kvm *kvm = pit->kvm; @@ -328,7 +327,7 @@ static enum hrtimer_restart pit_timer_fn(struct hrtimer *data) if (ktimer->reinject || !atomic_read(&ktimer->pending)) { atomic_inc(&ktimer->pending); - queue_work(pt->wq, &pt->expired); + queue_kthread_work(&pt->worker, &pt->expired); } if (ktimer->t_ops->is_periodic(ktimer)) { @@ -353,7 +352,7 @@ static void create_pit_timer(struct kvm *kvm, u32 val, int is_period) /* TODO The new value only affected after the retriggered */ hrtimer_cancel(&pt->timer); - cancel_work_sync(&ps->pit->expired); + flush_kthread_work(&ps->pit->expired); pt->period = interval; ps->is_periodic = is_period; @@ -669,6 +668,8 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) { struct kvm_pit *pit; struct kvm_kpit_state *pit_state; + struct pid *pid; + pid_t pid_nr; int ret; pit = kzalloc(sizeof(struct kvm_pit), GFP_KERNEL); @@ -685,14 +686,20 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) mutex_lock(&pit->pit_state.lock); spin_lock_init(&pit->pit_state.inject_lock); - pit->wq = create_singlethread_workqueue("kvm-pit-wq"); - if (!pit->wq) { + pid = get_pid(task_tgid(current)); + pid_nr = pid_vnr(pid); + put_pid(pid); + + init_kthread_worker(&pit->worker); + pit->worker_task = kthread_run(kthread_worker_fn, &pit->worker, + "kvm-pit/%d", pid_nr); + if (IS_ERR(pit->worker_task)) { mutex_unlock(&pit->pit_state.lock); kvm_free_irq_source_id(kvm, pit->irq_source_id); kfree(pit); return NULL; } - INIT_WORK(&pit->expired, pit_do_work); + init_kthread_work(&pit->expired, pit_do_work); kvm->arch.vpit = pit; pit->kvm = kvm; @@ -736,7 +743,7 @@ fail: kvm_unregister_irq_mask_notifier(kvm, 0, &pit->mask_notifier); kvm_unregister_irq_ack_notifier(kvm, &pit_state->irq_ack_notifier); kvm_free_irq_source_id(kvm, pit->irq_source_id); - destroy_workqueue(pit->wq); + kthread_stop(pit->worker_task); kfree(pit); return NULL; } @@ -756,10 +763,10 @@ void kvm_free_pit(struct kvm *kvm) mutex_lock(&kvm->arch.vpit->pit_state.lock); timer = &kvm->arch.vpit->pit_state.pit_timer.timer; hrtimer_cancel(timer); - cancel_work_sync(&kvm->arch.vpit->expired); + flush_kthread_work(&kvm->arch.vpit->expired); + kthread_stop(kvm->arch.vpit->worker_task); kvm_free_irq_source_id(kvm, kvm->arch.vpit->irq_source_id); mutex_unlock(&kvm->arch.vpit->pit_state.lock); - destroy_workqueue(kvm->arch.vpit->wq); kfree(kvm->arch.vpit); } } |