lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: Adds support for in-kernel mmio handlers

Browse Source 
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Gregory Haskins
2007-05-31 14:08:53 -04:00
committed by Avi Kivity
parent d9413cd757
commit 2eeb2e94eb
2 changed files with 142 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/kvm/kvm.h
View File

@@ -265,6 +265,65 @@ struct kvm_stat {
u32 efer_reload;
};
struct kvm_io_device {
void (*read)(struct kvm_io_device *this,
gpa_t addr,
int len,
void *val);
void (*write)(struct kvm_io_device *this,
gpa_t addr,
int len,
const void *val);
int (*in_range)(struct kvm_io_device *this, gpa_t addr);
void (*destructor)(struct kvm_io_device *this);
void *private;
};
static inline void kvm_iodevice_read(struct kvm_io_device *dev,
gpa_t addr,
int len,
void *val)
{
dev->read(dev, addr, len, val);
}
static inline void kvm_iodevice_write(struct kvm_io_device *dev,
gpa_t addr,
int len,
const void *val)
{
dev->write(dev, addr, len, val);
}
static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
{
return dev->in_range(dev, addr);
}
static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
{
dev->destructor(dev);
}
/*
* It would be nice to use something smarter than a linear search, TBD...
* Thankfully we dont expect many devices to register (famous last words :),
* so until then it will suffice. At least its abstracted so we can change
* in one place.
*/
struct kvm_io_bus {
int dev_count;
#define NR_IOBUS_DEVS 6
struct kvm_io_device *devs[NR_IOBUS_DEVS];
};
void kvm_io_bus_init(struct kvm_io_bus *bus);
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);
void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
struct kvm_io_device *dev);
struct kvm_vcpu {
struct kvm *kvm;
union {
@@ -393,6 +452,7 @@ struct kvm {
unsigned long rmap_overflow;
struct list_head vm_list;
struct file *filp;
struct kvm_io_bus mmio_bus;
};
struct descriptor_table {