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Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c')
-rw-r--r--tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c141
1 files changed, 115 insertions, 26 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
index 2a5727188c8d..721f6a693799 100644
--- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
+++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
@@ -26,17 +26,17 @@
#define SHINFO_REGION_GPA 0xc0000000ULL
#define SHINFO_REGION_SLOT 10
-#define DUMMY_REGION_GPA (SHINFO_REGION_GPA + (2 * PAGE_SIZE))
+#define DUMMY_REGION_GPA (SHINFO_REGION_GPA + (3 * PAGE_SIZE))
#define DUMMY_REGION_SLOT 11
#define SHINFO_ADDR (SHINFO_REGION_GPA)
-#define PVTIME_ADDR (SHINFO_REGION_GPA + PAGE_SIZE)
-#define RUNSTATE_ADDR (SHINFO_REGION_GPA + PAGE_SIZE + 0x20)
#define VCPU_INFO_ADDR (SHINFO_REGION_GPA + 0x40)
+#define PVTIME_ADDR (SHINFO_REGION_GPA + PAGE_SIZE)
+#define RUNSTATE_ADDR (SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE - 15)
#define SHINFO_VADDR (SHINFO_REGION_GVA)
-#define RUNSTATE_VADDR (SHINFO_REGION_GVA + PAGE_SIZE + 0x20)
#define VCPU_INFO_VADDR (SHINFO_REGION_GVA + 0x40)
+#define RUNSTATE_VADDR (SHINFO_REGION_GVA + PAGE_SIZE + PAGE_SIZE - 15)
#define EVTCHN_VECTOR 0x10
@@ -88,14 +88,20 @@ struct pvclock_wall_clock {
} __attribute__((__packed__));
struct vcpu_runstate_info {
- uint32_t state;
- uint64_t state_entry_time;
- uint64_t time[4];
+ uint32_t state;
+ uint64_t state_entry_time;
+ uint64_t time[5]; /* Extra field for overrun check */
};
+struct compat_vcpu_runstate_info {
+ uint32_t state;
+ uint64_t state_entry_time;
+ uint64_t time[5];
+} __attribute__((__packed__));;
+
struct arch_vcpu_info {
- unsigned long cr2;
- unsigned long pad; /* sizeof(vcpu_info_t) == 64 */
+ unsigned long cr2;
+ unsigned long pad; /* sizeof(vcpu_info_t) == 64 */
};
struct vcpu_info {
@@ -440,6 +446,7 @@ int main(int argc, char *argv[])
TEST_REQUIRE(xen_caps & KVM_XEN_HVM_CONFIG_SHARED_INFO);
bool do_runstate_tests = !!(xen_caps & KVM_XEN_HVM_CONFIG_RUNSTATE);
+ bool do_runstate_flag = !!(xen_caps & KVM_XEN_HVM_CONFIG_RUNSTATE_UPDATE_FLAG);
bool do_eventfd_tests = !!(xen_caps & KVM_XEN_HVM_CONFIG_EVTCHN_2LEVEL);
bool do_evtchn_tests = do_eventfd_tests && !!(xen_caps & KVM_XEN_HVM_CONFIG_EVTCHN_SEND);
@@ -449,8 +456,8 @@ int main(int argc, char *argv[])
/* Map a region for the shared_info page */
vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS,
- SHINFO_REGION_GPA, SHINFO_REGION_SLOT, 2, 0);
- virt_map(vm, SHINFO_REGION_GVA, SHINFO_REGION_GPA, 2);
+ SHINFO_REGION_GPA, SHINFO_REGION_SLOT, 3, 0);
+ virt_map(vm, SHINFO_REGION_GVA, SHINFO_REGION_GPA, 3);
struct shared_info *shinfo = addr_gpa2hva(vm, SHINFO_VADDR);
@@ -475,6 +482,19 @@ int main(int argc, char *argv[])
};
vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm);
+ if (do_runstate_flag) {
+ struct kvm_xen_hvm_attr ruf = {
+ .type = KVM_XEN_ATTR_TYPE_RUNSTATE_UPDATE_FLAG,
+ .u.runstate_update_flag = 1,
+ };
+ vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &ruf);
+
+ ruf.u.runstate_update_flag = 0;
+ vm_ioctl(vm, KVM_XEN_HVM_GET_ATTR, &ruf);
+ TEST_ASSERT(ruf.u.runstate_update_flag == 1,
+ "Failed to read back RUNSTATE_UPDATE_FLAG attr");
+ }
+
struct kvm_xen_hvm_attr ha = {
.type = KVM_XEN_ATTR_TYPE_SHARED_INFO,
.u.shared_info.gfn = SHINFO_REGION_GPA / PAGE_SIZE,
@@ -999,22 +1019,91 @@ int main(int argc, char *argv[])
runstate_names[i], rs->time[i]);
}
}
- TEST_ASSERT(rs->state == rst.u.runstate.state, "Runstate mismatch");
- TEST_ASSERT(rs->state_entry_time == rst.u.runstate.state_entry_time,
- "State entry time mismatch");
- TEST_ASSERT(rs->time[RUNSTATE_running] == rst.u.runstate.time_running,
- "Running time mismatch");
- TEST_ASSERT(rs->time[RUNSTATE_runnable] == rst.u.runstate.time_runnable,
- "Runnable time mismatch");
- TEST_ASSERT(rs->time[RUNSTATE_blocked] == rst.u.runstate.time_blocked,
- "Blocked time mismatch");
- TEST_ASSERT(rs->time[RUNSTATE_offline] == rst.u.runstate.time_offline,
- "Offline time mismatch");
-
- TEST_ASSERT(rs->state_entry_time == rs->time[0] +
- rs->time[1] + rs->time[2] + rs->time[3],
- "runstate times don't add up");
+
+ /*
+ * Exercise runstate info at all points across the page boundary, in
+ * 32-bit and 64-bit mode. In particular, test the case where it is
+ * configured in 32-bit mode and then switched to 64-bit mode while
+ * active, which takes it onto the second page.
+ */
+ unsigned long runstate_addr;
+ struct compat_vcpu_runstate_info *crs;
+ for (runstate_addr = SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE - sizeof(*rs) - 4;
+ runstate_addr < SHINFO_REGION_GPA + PAGE_SIZE + PAGE_SIZE + 4; runstate_addr++) {
+
+ rs = addr_gpa2hva(vm, runstate_addr);
+ crs = (void *)rs;
+
+ memset(rs, 0xa5, sizeof(*rs));
+
+ /* Set to compatibility mode */
+ lm.u.long_mode = 0;
+ vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm);
+
+ /* Set runstate to new address (kernel will write it) */
+ struct kvm_xen_vcpu_attr st = {
+ .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADDR,
+ .u.gpa = runstate_addr,
+ };
+ vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &st);
+
+ if (verbose)
+ printf("Compatibility runstate at %08lx\n", runstate_addr);
+
+ TEST_ASSERT(crs->state == rst.u.runstate.state, "Runstate mismatch");
+ TEST_ASSERT(crs->state_entry_time == rst.u.runstate.state_entry_time,
+ "State entry time mismatch");
+ TEST_ASSERT(crs->time[RUNSTATE_running] == rst.u.runstate.time_running,
+ "Running time mismatch");
+ TEST_ASSERT(crs->time[RUNSTATE_runnable] == rst.u.runstate.time_runnable,
+ "Runnable time mismatch");
+ TEST_ASSERT(crs->time[RUNSTATE_blocked] == rst.u.runstate.time_blocked,
+ "Blocked time mismatch");
+ TEST_ASSERT(crs->time[RUNSTATE_offline] == rst.u.runstate.time_offline,
+ "Offline time mismatch");
+ TEST_ASSERT(crs->time[RUNSTATE_offline + 1] == 0xa5a5a5a5a5a5a5a5ULL,
+ "Structure overrun");
+ TEST_ASSERT(crs->state_entry_time == crs->time[0] +
+ crs->time[1] + crs->time[2] + crs->time[3],
+ "runstate times don't add up");
+
+
+ /* Now switch to 64-bit mode */
+ lm.u.long_mode = 1;
+ vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &lm);
+
+ memset(rs, 0xa5, sizeof(*rs));
+
+ /* Don't change the address, just trigger a write */
+ struct kvm_xen_vcpu_attr adj = {
+ .type = KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST,
+ .u.runstate.state = (uint64_t)-1
+ };
+ vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &adj);
+
+ if (verbose)
+ printf("64-bit runstate at %08lx\n", runstate_addr);
+
+ TEST_ASSERT(rs->state == rst.u.runstate.state, "Runstate mismatch");
+ TEST_ASSERT(rs->state_entry_time == rst.u.runstate.state_entry_time,
+ "State entry time mismatch");
+ TEST_ASSERT(rs->time[RUNSTATE_running] == rst.u.runstate.time_running,
+ "Running time mismatch");
+ TEST_ASSERT(rs->time[RUNSTATE_runnable] == rst.u.runstate.time_runnable,
+ "Runnable time mismatch");
+ TEST_ASSERT(rs->time[RUNSTATE_blocked] == rst.u.runstate.time_blocked,
+ "Blocked time mismatch");
+ TEST_ASSERT(rs->time[RUNSTATE_offline] == rst.u.runstate.time_offline,
+ "Offline time mismatch");
+ TEST_ASSERT(rs->time[RUNSTATE_offline + 1] == 0xa5a5a5a5a5a5a5a5ULL,
+ "Structure overrun");
+
+ TEST_ASSERT(rs->state_entry_time == rs->time[0] +
+ rs->time[1] + rs->time[2] + rs->time[3],
+ "runstate times don't add up");
+ }
}
+
kvm_vm_free(vm);
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-13 03:08:27 +0000