OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

kvm: support non datamatch ioeventfd 

Adding restrictions just adds code.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2013-04-02 16:52:25 +03:00
parent 44c3f8f7c7
commit 41cb62c2d9
1 changed files with 18 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
kvm-all.c
View File

@ -501,21 +501,24 @@ int kvm_check_extension(KVMState *s, unsigned int extension)
}
static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val,
bool assign, uint32_t size)
bool assign, uint32_t size, bool datamatch)
{
int ret;
struct kvm_ioeventfd iofd;
iofd.datamatch = val;
iofd.datamatch = datamatch ? val : 0;
iofd.addr = addr;
iofd.len = size;
iofd.flags = KVM_IOEVENTFD_FLAG_DATAMATCH;
iofd.flags = 0;
iofd.fd = fd;
if (!kvm_enabled()) {
return -ENOSYS;
}
if (datamatch) {
iofd.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
}
if (!assign) {
iofd.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
}
@ -530,19 +533,22 @@ static int kvm_set_ioeventfd_mmio(int fd, uint32_t addr, uint32_t val,
}
static int kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint16_t val,
bool assign, uint32_t size)
bool assign, uint32_t size, bool datamatch)
{
struct kvm_ioeventfd kick = {
.datamatch = val,
.datamatch = datamatch ? val : 0,
.addr = addr,
.flags = KVM_IOEVENTFD_FLAG_PIO,
.len = size,
.flags = KVM_IOEVENTFD_FLAG_DATAMATCH | KVM_IOEVENTFD_FLAG_PIO,
.fd = fd,
};
int r;
if (!kvm_enabled()) {
return -ENOSYS;
}
if (datamatch) {
kick.flags |= KVM_IOEVENTFD_FLAG_DATAMATCH;
}
if (!assign) {
kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
}
@ -571,7 +577,7 @@ static int kvm_check_many_ioeventfds(void)
if (ioeventfds[i] < 0) {
break;
}
ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2);
ret = kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, true, 2, true);
if (ret < 0) {
close(ioeventfds[i]);
break;
@ -582,7 +588,7 @@ static int kvm_check_many_ioeventfds(void)
ret = i == ARRAY_SIZE(ioeventfds);
while (i-- > 0) {
kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2);
kvm_set_ioeventfd_pio(ioeventfds[i], 0, i, false, 2, true);
close(ioeventfds[i]);
}
return ret;
@ -802,10 +808,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
int fd = event_notifier_get_fd(e);
int r;
assert(match_data && section->size <= 8);
r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
data, true, section->size);
data, true, section->size, match_data);
if (r < 0) {
abort();
}
@ -820,7 +824,7 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
int r;
r = kvm_set_ioeventfd_mmio(fd, section->offset_within_address_space,
data, false, section->size);
data, false, section->size, match_data);
if (r < 0) {
abort();
}
@ -834,10 +838,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
int fd = event_notifier_get_fd(e);
int r;
assert(match_data && section->size <= 8);
r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
data, true, section->size);
data, true, section->size, match_data);
if (r < 0) {
abort();
}
@ -853,7 +855,7 @@ static void kvm_io_ioeventfd_del(MemoryListener *listener,
int r;
r = kvm_set_ioeventfd_pio(fd, section->offset_within_address_space,
data, false, section->size);
data, false, section->size, match_data);
if (r < 0) {
abort();
}