@@ -620,18 +620,12 @@ static void kvm_routing_and_irqfd_check(struct kvm_vm *vm,
* that no actual interrupt was injected for those cases.
*/
- for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) {
- fd[f] = eventfd(0, 0);
- TEST_ASSERT(fd[f] != -1, __KVM_SYSCALL_ERROR("eventfd()", fd[f]));
- }
+ for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++)
+ fd[f] = kvm_new_eventfd();
for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) {
- struct kvm_irqfd irqfd = {
- .fd = fd[f],
- .gsi = i - MIN_SPI,
- };
assert(i <= (uint64_t)UINT_MAX);
- vm_ioctl(vm, KVM_IRQFD, &irqfd);
+ kvm_assign_irqfd(vm, i - MIN_SPI, fd[f]);
}
for (f = 0, i = intid; i < (uint64_t)intid + num; i++, f++) {
@@ -18,6 +18,7 @@
#include <asm/atomic.h>
#include <asm/kvm.h>
+#include <sys/eventfd.h>
#include <sys/ioctl.h>
#include "kvm_util_arch.h"
@@ -496,6 +497,45 @@ static inline int vm_get_stats_fd(struct kvm_vm *vm)
return fd;
}
+static inline int __kvm_irqfd(struct kvm_vm *vm, uint32_t gsi, int eventfd,
+ uint32_t flags)
+{
+ struct kvm_irqfd irqfd = {
+ .fd = eventfd,
+ .gsi = gsi,
+ .flags = flags,
+ .resamplefd = -1,
+ };
+
+ return __vm_ioctl(vm, KVM_IRQFD, &irqfd);
+}
+
+static inline void kvm_irqfd(struct kvm_vm *vm, uint32_t gsi, int eventfd,
+ uint32_t flags)
+{
+ int ret = __kvm_irqfd(vm, gsi, eventfd, flags);
+
+ TEST_ASSERT_VM_VCPU_IOCTL(!ret, KVM_IRQFD, ret, vm);
+}
+
+static inline void kvm_assign_irqfd(struct kvm_vm *vm, uint32_t gsi, int eventfd)
+{
+ kvm_irqfd(vm, gsi, eventfd, 0);
+}
+
+static inline void kvm_deassign_irqfd(struct kvm_vm *vm, uint32_t gsi, int eventfd)
+{
+ kvm_irqfd(vm, gsi, eventfd, KVM_IRQFD_FLAG_DEASSIGN);
+}
+
+static inline int kvm_new_eventfd(void)
+{
+ int fd = eventfd(0, 0);
+
+ TEST_ASSERT(fd >= 0, __KVM_SYSCALL_ERROR("eventfd()", fd));
+ return fd;
+}
+
static inline void read_stats_header(int stats_fd, struct kvm_stats_header *header)
{
ssize_t ret;
@@ -547,11 +547,8 @@ int main(int argc, char *argv[])
int irq_fd[2] = { -1, -1 };
if (do_eventfd_tests) {
- irq_fd[0] = eventfd(0, 0);
- TEST_ASSERT(irq_fd[0] >= 0, __KVM_SYSCALL_ERROR("eventfd()", irq_fd[0]));
-
- irq_fd[1] = eventfd(0, 0);
- TEST_ASSERT(irq_fd[1] >= 0, __KVM_SYSCALL_ERROR("eventfd()", irq_fd[1]));
+ irq_fd[0] = kvm_new_eventfd();
+ irq_fd[1] = kvm_new_eventfd();
irq_routes.info.nr = 2;
@@ -569,15 +566,8 @@ int main(int argc, char *argv[])
vm_ioctl(vm, KVM_SET_GSI_ROUTING, &irq_routes.info);
- struct kvm_irqfd ifd = { };
-
- ifd.fd = irq_fd[0];
- ifd.gsi = 32;
- vm_ioctl(vm, KVM_IRQFD, &ifd);
-
- ifd.fd = irq_fd[1];
- ifd.gsi = 33;
- vm_ioctl(vm, KVM_IRQFD, &ifd);
+ kvm_assign_irqfd(vm, 32, irq_fd[0]);
+ kvm_assign_irqfd(vm, 33, irq_fd[1]);
struct sigaction sa = { };
sa.sa_handler = handle_alrm;
Add helpers to create eventfds and to (de)assign eventfds via KVM_IRQFD. Signed-off-by: Sean Christopherson <seanjc@google.com> --- tools/testing/selftests/kvm/arm64/vgic_irq.c | 12 ++---- .../testing/selftests/kvm/include/kvm_util.h | 40 +++++++++++++++++++ .../selftests/kvm/x86/xen_shinfo_test.c | 18 ++------- 3 files changed, 47 insertions(+), 23 deletions(-)