linux-kernel - [PATCH v6 10/13] KVM: selftests: state

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Message-Id: <20181016165011.6607-11-vkuznets@redhat.com>
Date:   Tue, 16 Oct 2018 18:50:08 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Roman Kagan <rkagan@...tuozzo.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "Michael Kelley (EOSG)" <Michael.H.Kelley@...rosoft.com>,
        linux-kernel@...r.kernel.org, Jim Mattson <jmattson@...gle.com>,
        Liran Alon <liran.alon@...cle.com>
Subject: [PATCH v6 10/13] KVM: selftests: state_test: test bare VMXON migration

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@...hat.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