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[Qemu-devel] [PATCH 3/4] kvm: support non datamatch ioeventfd
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PATCH 3/4] kvm: support non datamatch ioeventfd |
Date: |
Wed, 3 Apr 2013 11:59:40 +0300 |
Adding restrictions just adds code.
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
kvm-all.c | 34 ++++++++++++++++++----------------
1 file changed, 18 insertions(+), 16 deletions(-)
diff --git a/kvm-all.c b/kvm-all.c
index 589e37c..ce823f9 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -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();
}
--
MST
- [Qemu-devel] [PATCH 0/4] kvm-unittests: add pci PORT IO and MMIO speed tests, Michael S. Tsirkin, 2013/04/03
- [Qemu-devel] [PATCH 1/4] kvm: remove unused APIs, Michael S. Tsirkin, 2013/04/03
- [Qemu-devel] [PATCH 2/4] kvm: support any size for pio eventfd, Michael S. Tsirkin, 2013/04/03
- [Qemu-devel] [PATCH 3/4] kvm: support non datamatch ioeventfd,
Michael S. Tsirkin <=
- [Qemu-devel] [PATCH 4/4] pci: add pci test device, Michael S. Tsirkin, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Paolo Bonzini, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Michael S. Tsirkin, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Paolo Bonzini, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Michael S. Tsirkin, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Paolo Bonzini, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Michael S. Tsirkin, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Paolo Bonzini, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Michael S. Tsirkin, 2013/04/03
- Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device, Paolo Bonzini, 2013/04/03