path: root/virt/kvm
diff options
authorLaurent Vivier <Laurent.Vivier@bull.net>2008-05-30 16:05:53 +0200
committerAvi Kivity <avi@qumranet.com>2008-07-20 12:42:30 +0300
commit92760499d01ef91518119908eb9b8798b6c9bd3f (patch)
treea6bd80fbad82589eb5aa98f81edda4537bc1f625 /virt/kvm
parent131d82791b628d4aeafd94ddc74a9b68f3d15a83 (diff)
KVM: kvm_io_device: extend in_range() to manage len and write attribute
Modify member in_range() of structure kvm_io_device to pass length and the type of the I/O (write or read). This modification allows to use kvm_io_device with coalesced MMIO. Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'virt/kvm')
3 files changed, 10 insertions, 6 deletions
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index d0c668c6959..c0d22870ee9 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -307,7 +307,8 @@ void kvm_ioapic_update_eoi(struct kvm *kvm, int vector)
__kvm_ioapic_update_eoi(ioapic, i);
-static int ioapic_in_range(struct kvm_io_device *this, gpa_t addr)
+static int ioapic_in_range(struct kvm_io_device *this, gpa_t addr,
+ int len, int is_write)
struct kvm_ioapic *ioapic = (struct kvm_ioapic *)this->private;
diff --git a/virt/kvm/iodev.h b/virt/kvm/iodev.h
index c14e642027b..55e8846ac3a 100644
--- a/virt/kvm/iodev.h
+++ b/virt/kvm/iodev.h
@@ -27,7 +27,8 @@ struct kvm_io_device {
gpa_t addr,
int len,
const void *val);
- int (*in_range)(struct kvm_io_device *this, gpa_t addr);
+ int (*in_range)(struct kvm_io_device *this, gpa_t addr, int len,
+ int is_write);
void (*destructor)(struct kvm_io_device *this);
void *private;
@@ -49,9 +50,10 @@ static inline void kvm_iodevice_write(struct kvm_io_device *dev,
dev->write(dev, addr, len, val);
-static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
+static inline int kvm_iodevice_inrange(struct kvm_io_device *dev,
+ gpa_t addr, int len, int is_write)
- return dev->in_range(dev, addr);
+ return dev->in_range(dev, addr, len, is_write);
static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 83a0e5ce603..9330fad2b91 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1350,14 +1350,15 @@ void kvm_io_bus_destroy(struct kvm_io_bus *bus)
-struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr)
+struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus,
+ gpa_t addr, int len, int is_write)
int i;
for (i = 0; i < bus->dev_count; i++) {
struct kvm_io_device *pos = bus->devs[i];
- if (pos->in_range(pos, addr))
+ if (pos->in_range(pos, addr, len, is_write))
return pos;