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Diffstat (limited to 'tools/testing/selftests/kvm/lib/kvm_util.c')
-rw-r--r--tools/testing/selftests/kvm/lib/kvm_util.c145
1 files changed, 111 insertions, 34 deletions
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index e5fbf16f725b..fc83f6c5902d 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -18,7 +18,6 @@
#include <unistd.h>
#include <linux/kernel.h>
-#define KVM_UTIL_PGS_PER_HUGEPG 512
#define KVM_UTIL_MIN_PFN 2
static int vcpu_mmap_sz(void);
@@ -143,17 +142,24 @@ static void vm_open(struct kvm_vm *vm, int perm)
"rc: %i errno: %i", vm->fd, errno);
}
-const char * const vm_guest_mode_string[] = {
- "PA-bits:52, VA-bits:48, 4K pages",
- "PA-bits:52, VA-bits:48, 64K pages",
- "PA-bits:48, VA-bits:48, 4K pages",
- "PA-bits:48, VA-bits:48, 64K pages",
- "PA-bits:40, VA-bits:48, 4K pages",
- "PA-bits:40, VA-bits:48, 64K pages",
- "PA-bits:ANY, VA-bits:48, 4K pages",
-};
-_Static_assert(sizeof(vm_guest_mode_string)/sizeof(char *) == NUM_VM_MODES,
- "Missing new mode strings?");
+const char *vm_guest_mode_string(uint32_t i)
+{
+ static const char * const strings[] = {
+ [VM_MODE_P52V48_4K] = "PA-bits:52, VA-bits:48, 4K pages",
+ [VM_MODE_P52V48_64K] = "PA-bits:52, VA-bits:48, 64K pages",
+ [VM_MODE_P48V48_4K] = "PA-bits:48, VA-bits:48, 4K pages",
+ [VM_MODE_P48V48_64K] = "PA-bits:48, VA-bits:48, 64K pages",
+ [VM_MODE_P40V48_4K] = "PA-bits:40, VA-bits:48, 4K pages",
+ [VM_MODE_P40V48_64K] = "PA-bits:40, VA-bits:48, 64K pages",
+ [VM_MODE_PXXV48_4K] = "PA-bits:ANY, VA-bits:48, 4K pages",
+ };
+ _Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES,
+ "Missing new mode strings?");
+
+ TEST_ASSERT(i < NUM_VM_MODES, "Guest mode ID %d too big", i);
+
+ return strings[i];
+}
const struct vm_guest_mode_params vm_guest_mode_params[] = {
{ 52, 48, 0x1000, 12 },
@@ -514,7 +520,7 @@ static void vm_vcpu_rm(struct kvm_vm *vm, struct vcpu *vcpu)
ret = munmap(vcpu->state, vcpu_mmap_sz());
TEST_ASSERT(ret == 0, "munmap of VCPU fd failed, rc: %i "
"errno: %i", ret, errno);
- close(vcpu->fd);
+ ret = close(vcpu->fd);
TEST_ASSERT(ret == 0, "Close of VCPU fd failed, rc: %i "
"errno: %i", ret, errno);
@@ -534,7 +540,7 @@ void kvm_vm_release(struct kvm_vm *vmp)
TEST_ASSERT(ret == 0, "Close of vm fd failed,\n"
" vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno);
- close(vmp->kvm_fd);
+ ret = close(vmp->kvm_fd);
TEST_ASSERT(ret == 0, "Close of /dev/kvm fd failed,\n"
" vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno);
}
@@ -681,7 +687,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
{
int ret;
struct userspace_mem_region *region;
- size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size;
+ size_t backing_src_pagesz = get_backing_src_pagesz(src_type);
size_t alignment;
TEST_ASSERT(vm_adjust_num_guest_pages(vm->mode, npages) == npages,
@@ -743,7 +749,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
#endif
if (src_type == VM_MEM_SRC_ANONYMOUS_THP)
- alignment = max(huge_page_size, alignment);
+ alignment = max(backing_src_pagesz, alignment);
/* Add enough memory to align up if necessary */
if (alignment > 1)
@@ -752,7 +758,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
region->mmap_start = mmap(NULL, region->mmap_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS
- | (src_type == VM_MEM_SRC_ANONYMOUS_HUGETLB ? MAP_HUGETLB : 0),
+ | vm_mem_backing_src_alias(src_type)->flag,
-1, 0);
TEST_ASSERT(region->mmap_start != MAP_FAILED,
"test_malloc failed, mmap_start: %p errno: %i",
@@ -762,22 +768,13 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
region->host_mem = align(region->mmap_start, alignment);
/* As needed perform madvise */
- if (src_type == VM_MEM_SRC_ANONYMOUS || src_type == VM_MEM_SRC_ANONYMOUS_THP) {
- struct stat statbuf;
-
- ret = stat("/sys/kernel/mm/transparent_hugepage", &statbuf);
- TEST_ASSERT(ret == 0 || (ret == -1 && errno == ENOENT),
- "stat /sys/kernel/mm/transparent_hugepage");
-
- TEST_ASSERT(ret == 0 || src_type != VM_MEM_SRC_ANONYMOUS_THP,
- "VM_MEM_SRC_ANONYMOUS_THP requires THP to be configured in the host kernel");
-
- if (ret == 0) {
- ret = madvise(region->host_mem, npages * vm->page_size,
- src_type == VM_MEM_SRC_ANONYMOUS ? MADV_NOHUGEPAGE : MADV_HUGEPAGE);
- TEST_ASSERT(ret == 0, "madvise failed, addr: %p length: 0x%lx src_type: %x",
- region->host_mem, npages * vm->page_size, src_type);
- }
+ if ((src_type == VM_MEM_SRC_ANONYMOUS ||
+ src_type == VM_MEM_SRC_ANONYMOUS_THP) && thp_configured()) {
+ ret = madvise(region->host_mem, npages * vm->page_size,
+ src_type == VM_MEM_SRC_ANONYMOUS ? MADV_NOHUGEPAGE : MADV_HUGEPAGE);
+ TEST_ASSERT(ret == 0, "madvise failed, addr: %p length: 0x%lx src_type: %s",
+ region->host_mem, npages * vm->page_size,
+ vm_mem_backing_src_alias(src_type)->name);
}
region->unused_phy_pages = sparsebit_alloc();
@@ -1697,11 +1694,16 @@ void vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg)
{
int ret;
- ret = ioctl(vm->fd, cmd, arg);
+ ret = _vm_ioctl(vm, cmd, arg);
TEST_ASSERT(ret == 0, "vm ioctl %lu failed, rc: %i errno: %i (%s)",
cmd, ret, errno, strerror(errno));
}
+int _vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg)
+{
+ return ioctl(vm->fd, cmd, arg);
+}
+
/*
* KVM system ioctl
*
@@ -1729,6 +1731,81 @@ int _kvm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg)
}
/*
+ * Device Ioctl
+ */
+
+int _kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr)
+{
+ struct kvm_device_attr attribute = {
+ .group = group,
+ .attr = attr,
+ .flags = 0,
+ };
+
+ return ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute);
+}
+
+int kvm_device_check_attr(int dev_fd, uint32_t group, uint64_t attr)
+{
+ int ret = _kvm_device_check_attr(dev_fd, group, attr);
+
+ TEST_ASSERT(ret >= 0, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno);
+ return ret;
+}
+
+int _kvm_create_device(struct kvm_vm *vm, uint64_t type, bool test, int *fd)
+{
+ struct kvm_create_device create_dev;
+ int ret;
+
+ create_dev.type = type;
+ create_dev.fd = -1;
+ create_dev.flags = test ? KVM_CREATE_DEVICE_TEST : 0;
+ ret = ioctl(vm_get_fd(vm), KVM_CREATE_DEVICE, &create_dev);
+ *fd = create_dev.fd;
+ return ret;
+}
+
+int kvm_create_device(struct kvm_vm *vm, uint64_t type, bool test)
+{
+ int fd, ret;
+
+ ret = _kvm_create_device(vm, type, test, &fd);
+
+ if (!test) {
+ TEST_ASSERT(ret >= 0,
+ "KVM_CREATE_DEVICE IOCTL failed, rc: %i errno: %i", ret, errno);
+ return fd;
+ }
+ return ret;
+}
+
+int _kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
+ void *val, bool write)
+{
+ struct kvm_device_attr kvmattr = {
+ .group = group,
+ .attr = attr,
+ .flags = 0,
+ .addr = (uintptr_t)val,
+ };
+ int ret;
+
+ ret = ioctl(dev_fd, write ? KVM_SET_DEVICE_ATTR : KVM_GET_DEVICE_ATTR,
+ &kvmattr);
+ return ret;
+}
+
+int kvm_device_access(int dev_fd, uint32_t group, uint64_t attr,
+ void *val, bool write)
+{
+ int ret = _kvm_device_access(dev_fd, group, attr, val, write);
+
+ TEST_ASSERT(ret >= 0, "KVM_SET|GET_DEVICE_ATTR IOCTL failed, rc: %i errno: %i", ret, errno);
+ return ret;
+}
+
+/*
* VM Dump
*
* Input Args:
generated by cgit (git 2.34.1) at 2025-05-29 05:58:08 +0000