linux-kernel - [PATCH v2 119/144] KVM: selftests: Convert s390x/diag318_test_handler away from VCPU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20220603004331.1523888-120-seanjc@google.com>
Date:   Fri,  3 Jun 2022 00:43:06 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, Vitaly Kuznetsov <vkuznets@...hat.com>,
        Andrew Jones <drjones@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Oliver Upton <oupton@...gle.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 119/144] KVM: selftests: Convert s390x/diag318_test_handler
 away from VCPU_ID

Convert diag318_test_handler to use vm_create_with_vcpus() and pass around a
'struct kvm_vcpu' object instead of passing around vCPU IDs.  Note, this is
a "functional" change in the sense that the test now creates a vCPU with
vcpu_id==0 instead of vcpu_id==6.  The non-zero VCPU_ID was 100% arbitrary
and added little to no validation coverage.  If testing non-zero vCPU IDs
is desirable for generic tests, that can be done in the future by tweaking
the VM creation helpers.

Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
 .../selftests/kvm/lib/s390x/diag318_test_handler.c       | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/s390x/diag318_test_handler.c b/tools/testing/selftests/kvm/lib/s390x/diag318_test_handler.c
index 86b9e611ad87..21c31fe10c1a 100644
--- a/tools/testing/selftests/kvm/lib/s390x/diag318_test_handler.c
+++ b/tools/testing/selftests/kvm/lib/s390x/diag318_test_handler.c
@@ -8,8 +8,6 @@
 #include "test_util.h"
 #include "kvm_util.h"
 
-#define VCPU_ID	6
-
 #define ICPT_INSTRUCTION	0x04
 #define IPA0_DIAG		0x8300
 
@@ -27,14 +25,15 @@ static void guest_code(void)
  */
 static uint64_t diag318_handler(void)
 {
+	struct kvm_vcpu *vcpu;
 	struct kvm_vm *vm;
 	struct kvm_run *run;
 	uint64_t reg;
 	uint64_t diag318_info;
 
-	vm = vm_create_default(VCPU_ID, 0, guest_code);
-	vcpu_run(vm, VCPU_ID);
-	run = vcpu_state(vm, VCPU_ID);
+	vm = vm_create_with_one_vcpu(&vcpu, guest_code);
+	vcpu_run(vm, vcpu->id);
+	run = vcpu->run;
 
 	TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
 		    "DIAGNOSE 0x0318 instruction was not intercepted");
-- 
2.36.1.255.ge46751e96f-goog