leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

KVM: selftests: Fill per-vCPU struct during "perf_test" VM creation

Browse Source 
Fill the per-vCPU args when creating the perf_test VM instead of having
the caller do so.  This helps ensure that any adjustments to the number
of pages (and thus vcpu_memory_bytes) are reflected in the per-VM args.
Automatically filling the per-vCPU args will also allow a future patch
to do the sync to the guest during creation.

Signed-off-by: Sean Christopherson <seanjc@google.com>
[Updated access_tracking_perf_test as well.]
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Message-Id: <20211111000310.1435032-12-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2021-11-11 00:03:09 +00:00
committed by Paolo Bonzini
parent f5e8fe2a92
commit cf1d59300a
6 changed files with 45 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
tools/testing/selftests/kvm/lib/perf_test_util.c
View File

@@ -48,9 +48,43 @@ static void guest_code(uint32_t vcpu_id)
}
}
void perf_test_setup_vcpus(struct kvm_vm *vm, int vcpus,
uint64_t vcpu_memory_bytes,
bool partition_vcpu_memory_access)
{
struct perf_test_args *pta = &perf_test_args;
struct perf_test_vcpu_args *vcpu_args;
int vcpu_id;
for (vcpu_id = 0; vcpu_id < vcpus; vcpu_id++) {
vcpu_args = &pta->vcpu_args[vcpu_id];
vcpu_args->vcpu_id = vcpu_id;
if (partition_vcpu_memory_access) {
vcpu_args->gva = guest_test_virt_mem +
(vcpu_id * vcpu_memory_bytes);
vcpu_args->pages = vcpu_memory_bytes /
pta->guest_page_size;
vcpu_args->gpa = pta->gpa + (vcpu_id * vcpu_memory_bytes);
} else {
vcpu_args->gva = guest_test_virt_mem;
vcpu_args->pages = (vcpus * vcpu_memory_bytes) /
pta->guest_page_size;
vcpu_args->gpa = pta->gpa;
}
vcpu_args_set(vm, vcpu_id, 1, vcpu_id);
pr_debug("Added VCPU %d with test mem gpa [%lx, %lx)\n",
vcpu_id, vcpu_args->gpa, vcpu_args->gpa +
(vcpu_args->pages * pta->guest_page_size));
}
}
struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
uint64_t vcpu_memory_bytes, int slots,
enum vm_mem_backing_src_type backing_src)
enum vm_mem_backing_src_type backing_src,
bool partition_vcpu_memory_access)
{
struct perf_test_args *pta = &perf_test_args;
struct kvm_vm *vm;
@@ -119,6 +153,8 @@ struct kvm_vm *perf_test_create_vm(enum vm_guest_mode mode, int vcpus,
/* Do mapping for the demand paging memory slot */
virt_map(vm, guest_test_virt_mem, pta->gpa, guest_num_pages);
perf_test_setup_vcpus(vm, vcpus, vcpu_memory_bytes, partition_vcpu_memory_access);
ucall_init(vm, NULL);
return vm;
@@ -129,36 +165,3 @@ void perf_test_destroy_vm(struct kvm_vm *vm)
ucall_uninit(vm);
kvm_vm_free(vm);
}
void perf_test_setup_vcpus(struct kvm_vm *vm, int vcpus,
uint64_t vcpu_memory_bytes,
bool partition_vcpu_memory_access)
{
struct perf_test_args *pta = &perf_test_args;
struct perf_test_vcpu_args *vcpu_args;
int vcpu_id;
for (vcpu_id = 0; vcpu_id < vcpus; vcpu_id++) {
vcpu_args = &pta->vcpu_args[vcpu_id];
vcpu_args->vcpu_id = vcpu_id;
if (partition_vcpu_memory_access) {
vcpu_args->gva = guest_test_virt_mem +
(vcpu_id * vcpu_memory_bytes);
vcpu_args->pages = vcpu_memory_bytes /
pta->guest_page_size;
vcpu_args->gpa = pta->gpa + (vcpu_id * vcpu_memory_bytes);
} else {
vcpu_args->gva = guest_test_virt_mem;
vcpu_args->pages = (vcpus * vcpu_memory_bytes) /
pta->guest_page_size;
vcpu_args->gpa = pta->gpa;
}
vcpu_args_set(vm, vcpu_id, 1, vcpu_id);
pr_debug("Added VCPU %d with test mem gpa [%lx, %lx)\n",
vcpu_id, vcpu_args->gpa, vcpu_args->gpa +
(vcpu_args->pages * pta->guest_page_size));
}
}