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Subject[PATCH v6 10/13] KVM: selftests: state_test: test bare VMXON migration
Date
Split prepare_for_vmx_operation() into prepare_for_vmx_operation() and
load_vmcs() so we can inject GUEST_SYNC() in between.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
.../selftests/kvm/include/x86_64/vmx.h | 1 +
tools/testing/selftests/kvm/lib/x86_64/vmx.c | 5 +++++
.../testing/selftests/kvm/x86_64/state_test.c | 22 ++++++++++---------
.../kvm/x86_64/vmx_tsc_adjust_test.c | 1 +
4 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/vmx.h b/tools/testing/selftests/kvm/include/x86_64/vmx.h
index 12ebd836f7ef..4bbee8560292 100644
--- a/tools/testing/selftests/kvm/include/x86_64/vmx.h
+++ b/tools/testing/selftests/kvm/include/x86_64/vmx.h
@@ -548,5 +548,6 @@ struct vmx_pages {
struct vmx_pages *vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva);
bool prepare_for_vmx_operation(struct vmx_pages *vmx);
void prepare_vmcs(struct vmx_pages *vmx, void *guest_rip, void *guest_rsp);
+bool load_vmcs(struct vmx_pages *vmx);

#endif /* SELFTEST_KVM_VMX_H */
diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
index d7c401472247..cc356da9b3d8 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
@@ -107,6 +107,11 @@ bool prepare_for_vmx_operation(struct vmx_pages *vmx)
if (vmxon(vmx->vmxon_gpa))
return false;

+ return true;
+}
+
+bool load_vmcs(struct vmx_pages *vmx)
+{
/* Load a VMCS. */
*(uint32_t *)(vmx->vmcs) = vmcs_revision();
if (vmclear(vmx->vmcs_gpa))
diff --git a/tools/testing/selftests/kvm/x86_64/state_test.c b/tools/testing/selftests/kvm/x86_64/state_test.c
index 43df194a7c1e..03da41f0f736 100644
--- a/tools/testing/selftests/kvm/x86_64/state_test.c
+++ b/tools/testing/selftests/kvm/x86_64/state_test.c
@@ -26,20 +26,20 @@ static bool have_nested_state;

void l2_guest_code(void)
{
- GUEST_SYNC(5);
+ GUEST_SYNC(6);

/* Exit to L1 */
vmcall();

/* L1 has now set up a shadow VMCS for us. */
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee);
- GUEST_SYNC(9);
+ GUEST_SYNC(10);
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee);
GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0fffee));
- GUEST_SYNC(10);
+ GUEST_SYNC(11);
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0fffee);
GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0ffffee));
- GUEST_SYNC(11);
+ GUEST_SYNC(12);

/* Done, exit to L1 and never come back. */
vmcall();
@@ -52,15 +52,17 @@ void l1_guest_code(struct vmx_pages *vmx_pages)

GUEST_ASSERT(vmx_pages->vmcs_gpa);
GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
+ GUEST_SYNC(3);
+ GUEST_ASSERT(load_vmcs(vmx_pages));
GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa);

- GUEST_SYNC(3);
+ GUEST_SYNC(4);
GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa);

prepare_vmcs(vmx_pages, l2_guest_code,
&l2_guest_stack[L2_GUEST_STACK_SIZE]);

- GUEST_SYNC(4);
+ GUEST_SYNC(5);
GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa);
GUEST_ASSERT(!vmlaunch());
GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa);
@@ -72,7 +74,7 @@ void l1_guest_code(struct vmx_pages *vmx_pages)
GUEST_ASSERT(!vmresume());
GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);

- GUEST_SYNC(6);
+ GUEST_SYNC(7);
GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);

GUEST_ASSERT(!vmresume());
@@ -85,12 +87,12 @@ void l1_guest_code(struct vmx_pages *vmx_pages)

GUEST_ASSERT(!vmptrld(vmx_pages->shadow_vmcs_gpa));
GUEST_ASSERT(vmlaunch());
- GUEST_SYNC(7);
+ GUEST_SYNC(8);
GUEST_ASSERT(vmlaunch());
GUEST_ASSERT(vmresume());

vmwrite(GUEST_RIP, 0xc0ffee);
- GUEST_SYNC(8);
+ GUEST_SYNC(9);
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee);

GUEST_ASSERT(!vmptrld(vmx_pages->vmcs_gpa));
@@ -101,7 +103,7 @@ void l1_guest_code(struct vmx_pages *vmx_pages)
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee);
GUEST_ASSERT(vmlaunch());
GUEST_ASSERT(vmresume());
- GUEST_SYNC(12);
+ GUEST_SYNC(13);
GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee);
GUEST_ASSERT(vmlaunch());
GUEST_ASSERT(vmresume());
diff --git a/tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c b/tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c
index 38a91a5f04ac..18fa64db0d7a 100644
--- a/tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_tsc_adjust_test.c
@@ -94,6 +94,7 @@ static void l1_guest_code(struct vmx_pages *vmx_pages)
check_ia32_tsc_adjust(-1 * TSC_ADJUST_VALUE);

GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
+ GUEST_ASSERT(load_vmcs(vmx_pages));

/* Prepare the VMCS for L2 execution. */
prepare_vmcs(vmx_pages, l2_guest_code,
--
2.17.1
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