diff options
| author | Gregory Haskins <ghaskins@novell.com> | 2009-06-01 12:54:50 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 08:32:45 +0300 |
| commit | d76685c4a074041ed168e0b04dd604c3df5dcaa5 (patch) | |
| tree | 828fb3a57b7829530904318a0ad9d006e21408ad /arch/x86/kvm/i8259.c | |
| parent | 787a660a4f03325a0e00493ac39017e53fd345fa (diff) | |
| download | linux-d76685c4a074041ed168e0b04dd604c3df5dcaa5.tar.bz2 | |
KVM: cleanup io_device code
We modernize the io_device code so that we use container_of() instead of
dev->private, and move the vtable to a separate ops structure
(theoretically allows better caching for multiple instances of the same
ops structure)
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/i8259.c')
| -rw-r--r-- | arch/x86/kvm/i8259.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index 1ccb50c74f18..2520922282d5 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -444,10 +444,15 @@ static int picdev_in_range(struct kvm_io_device *this, gpa_t addr, } } +static inline struct kvm_pic *to_pic(struct kvm_io_device *dev) +{ + return container_of(dev, struct kvm_pic, dev); +} + static void picdev_write(struct kvm_io_device *this, gpa_t addr, int len, const void *val) { - struct kvm_pic *s = this->private; + struct kvm_pic *s = to_pic(this); unsigned char data = *(unsigned char *)val; if (len != 1) { @@ -474,7 +479,7 @@ static void picdev_write(struct kvm_io_device *this, static void picdev_read(struct kvm_io_device *this, gpa_t addr, int len, void *val) { - struct kvm_pic *s = this->private; + struct kvm_pic *s = to_pic(this); unsigned char data = 0; if (len != 1) { @@ -516,6 +521,12 @@ static void pic_irq_request(void *opaque, int level) } } +static const struct kvm_io_device_ops picdev_ops = { + .read = picdev_read, + .write = picdev_write, + .in_range = picdev_in_range, +}; + struct kvm_pic *kvm_create_pic(struct kvm *kvm) { struct kvm_pic *s; @@ -534,10 +545,7 @@ struct kvm_pic *kvm_create_pic(struct kvm *kvm) /* * Initialize PIO device */ - s->dev.read = picdev_read; - s->dev.write = picdev_write; - s->dev.in_range = picdev_in_range; - s->dev.private = s; + kvm_iodevice_init(&s->dev, &picdev_ops); kvm_io_bus_register_dev(&kvm->pio_bus, &s->dev); return s; } |