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tests/qtest/migration: Move kvm_dirty_ring_supported to utils

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Move kvm_dirty_ring_supported() to migration-util.c. Similarly to
ufd_version_check(), this function is used during test definition so
put it in the utils file.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Fabiano Rosas 2024-11-27 15:28:52 -03:00
parent 124a3c58b8
commit 2fa72ba79b
3 changed files with 30 additions and 29 deletions
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29
tests/qtest/migration-test.c
View file

@ -32,12 +32,6 @@
# endif /* CONFIG_TASN1 */
#endif /* CONFIG_GNUTLS */
/* For dirty ring test; so far only x86_64 is supported */
#if defined(__linux__) && defined(HOST_X86_64)
#include "linux/kvm.h"
#include <sys/ioctl.h>
#endif
unsigned start_address;
unsigned end_address;
static bool uffd_feature_thread_id;
@ -3435,29 +3429,6 @@ static void test_dirty_limit(void)
migrate_end(from, to, true);
}
static bool kvm_dirty_ring_supported(void)
{
#if defined(__linux__) && defined(HOST_X86_64)
int ret, kvm_fd = open("/dev/kvm", O_RDONLY);
if (kvm_fd < 0) {
return false;
}
ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, KVM_CAP_DIRTY_LOG_RING);
close(kvm_fd);
/* We test with 4096 slots */
if (ret < 4096) {
return false;
}
return true;
#else
return false;
#endif
}
int main(int argc, char **argv)
{
bool has_kvm, has_tcg;

29
tests/qtest/migration/migration-util.c
View file

@ -28,6 +28,12 @@
#include "qemu/userfaultfd.h"
#endif
/* For dirty ring test; so far only x86_64 is supported */
#if defined(__linux__) && defined(HOST_X86_64)
#include "linux/kvm.h"
#include <sys/ioctl.h>
#endif
static char *SocketAddress_to_str(SocketAddress *addr)
{
@ -331,3 +337,26 @@ bool ufd_version_check(bool *uffd_feature_thread_id)
return false;
}
#endif
bool kvm_dirty_ring_supported(void)
{
#if defined(__linux__) && defined(HOST_X86_64)
int ret, kvm_fd = open("/dev/kvm", O_RDONLY);
if (kvm_fd < 0) {
return false;
}
ret = ioctl(kvm_fd, KVM_CHECK_EXTENSION, KVM_CAP_DIRTY_LOG_RING);
close(kvm_fd);
/* We test with 4096 slots */
if (ret < 4096) {
return false;
}
return true;
#else
return false;
#endif
}

1
tests/qtest/migration/migration-util.h
View file

@ -49,6 +49,7 @@ static inline bool probe_o_direct_support(const char *tmpfs)
#endif
bool ufd_version_check(bool *uffd_feature_thread_id);
bool kvm_dirty_ring_supported(void);
void migration_test_add(const char *path, void (*fn)(void));
char *migrate_get_connect_uri(QTestState *who);
void migrate_set_ports(QTestState *to, QList *channel_list);