diff options
| author |   Scott Wood <scottwood@freescale.com> | 2013-04-25 14:11:24 +0000 |
|---|---|---|
| committer |   Alexander Graf <agraf@suse.de> | 2013-04-26 20:27:28 +0200 |
| commit | 91194919a6b07d70081fe185a79b129efee84fff (patch) | |
| tree | aa4b2df5f59b5965777dadc08373727aa753f992 | |
| parent | kvm: destroy emulated devices on VM exit (diff) | |
| download | linux-dev-91194919a6b07d70081fe185a79b129efee84fff.tar.xz linux-dev-91194919a6b07d70081fe185a79b129efee84fff.zip | |
kvm/ppc/mpic: Eliminate mmio_mapped
We no longer need to keep track of this now that MPIC destruction
always happens either during VM destruction (after MMIO has been
destroyed) or during a failed creation (before the fd has been exposed
to userspace, and thus before the MMIO region could have been
registered).
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
| -rw-r--r-- | arch/powerpc/kvm/mpic.c | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c index 795ca0c9ae69..f3148f8cdc12 100644 --- a/arch/powerpc/kvm/mpic.c +++ b/arch/powerpc/kvm/mpic.c @@ -190,7 +190,6 @@ struct openpic { struct kvm_io_device mmio; struct list_head mmio_regions; atomic_t users; - bool mmio_mapped; gpa_t reg_base; spinlock_t lock; @@ -1428,24 +1427,13 @@ static int kvm_mpic_write(struct kvm_io_device *this, gpa_t addr, return ret; } -static void kvm_mpic_dtor(struct kvm_io_device *this) -{ - struct openpic *opp = container_of(this, struct openpic, mmio); - - opp->mmio_mapped = false; -} - static const struct kvm_io_device_ops mpic_mmio_ops = { .read = kvm_mpic_read, .write = kvm_mpic_write, - .destructor = kvm_mpic_dtor, }; static void map_mmio(struct openpic *opp) { - BUG_ON(opp->mmio_mapped); - opp->mmio_mapped = true; - kvm_iodevice_init(&opp->mmio, &mpic_mmio_ops); kvm_io_bus_register_dev(opp->kvm, KVM_MMIO_BUS, @@ -1455,10 +1443,7 @@ static void map_mmio(struct openpic *opp) static void unmap_mmio(struct openpic *opp) { - if (opp->mmio_mapped) { - opp->mmio_mapped = false; - kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio); - } + kvm_io_bus_unregister_dev(opp->kvm, KVM_MMIO_BUS, &opp->mmio); } static int set_base_addr(struct openpic *opp, struct kvm_device_attr *attr) @@ -1637,18 +1622,6 @@ static void mpic_destroy(struct kvm_device *dev) { struct openpic *opp = dev->private; - if (opp->mmio_mapped) { - /* - * Normally we get unmapped by kvm_io_bus_destroy(), - * which happens before the VCPUs release their references. - * - * Thus, we should only get here if no VCPUs took a reference - * to us in the first place. - */ - WARN_ON(opp->nb_cpus != 0); - unmap_mmio(opp); - } - dev->kvm->arch.mpic = NULL; kfree(opp); } |