linux-kernel - [RFC PATCH v2 01/17] KVM: selftests: Add support for creating non-default type VMs

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Date:   Tue, 30 Aug 2022 22:19:44 +0000
From:   Sagi Shahar <sagis@...gle.com>
To:     linux-kselftest@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Isaku Yamahata <isaku.yamahata@...el.com>,
        Sagi Shahar <sagis@...gle.com>,
        Erdem Aktas <erdemaktas@...gle.com>,
        Ryan Afranji <afranji@...gle.com>,
        Roger Wang <runanwang@...gle.com>,
        Shuah Khan <shuah@...nel.org>,
        Andrew Jones <drjones@...hat.com>,
        Marc Zyngier <maz@...nel.org>, Ben Gardon <bgardon@...gle.com>,
        Jim Mattson <jmattson@...gle.com>,
        David Matlack <dmatlack@...gle.com>,
        Peter Xu <peterx@...hat.com>, Oliver Upton <oupton@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Yang Zhong <yang.zhong@...el.com>,
        Wei Wang <wei.w.wang@...el.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>,
        Peter Gonda <pgonda@...gle.com>, Marc Orr <marcorr@...gle.com>,
        Emanuele Giuseppe Esposito <eesposit@...hat.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Eric Auger <eric.auger@...hat.com>,
        Yanan Wang <wangyanan55@...wei.com>,
        Aaron Lewis <aaronlewis@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Peter Shier <pshier@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Zhenzhong Duan <zhenzhong.duan@...el.com>,
        "Maciej S . Szmigiero" <maciej.szmigiero@...cle.com>,
        Like Xu <like.xu@...ux.intel.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: [RFC PATCH v2 01/17] KVM: selftests: Add support for creating
 non-default type VMs

From: Erdem Aktas <erdemaktas@...gle.com>

Currently vm_create function only creates KVM_VM_TYPE_DEFAULT type VMs.
Adding type parameter to ____vm_create to create new VM types.

Signed-off-by: Erdem Aktas <erdemaktas@...gle.com>
Signed-off-by: Sagi Shahar <sagis@...gle.com>
Signed-off-by: Ryan Afranji <afranji@...gle.com>
---
 tools/testing/selftests/kvm/include/kvm_util_base.h | 6 ++++--
 tools/testing/selftests/kvm/lib/kvm_util.c          | 6 +++---
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 24fde97f6121..2de7a7a2e56b 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -26,6 +26,8 @@
 
 #define NSEC_PER_SEC 1000000000L
 
+#define KVM_VM_TYPE_DEFAULT	0
+
 typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */
 typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */
 
@@ -642,13 +644,13 @@ vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm);
  * __vm_create() does NOT create vCPUs, @nr_runnable_vcpus is used purely to
  * calculate the amount of memory needed for per-vCPU data, e.g. stacks.
  */
-struct kvm_vm *____vm_create(enum vm_guest_mode mode, uint64_t nr_pages);
+struct kvm_vm *____vm_create(enum vm_guest_mode mode, uint64_t nr_pages, int type);
 struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint32_t nr_runnable_vcpus,
 			   uint64_t nr_extra_pages);
 
 static inline struct kvm_vm *vm_create_barebones(void)
 {
-	return ____vm_create(VM_MODE_DEFAULT, 0);
+	return ____vm_create(VM_MODE_DEFAULT, 0, KVM_VM_TYPE_DEFAULT);
 }
 
 static inline struct kvm_vm *vm_create(uint32_t nr_runnable_vcpus)
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 9889fe0d8919..ac10ad8919a6 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -143,7 +143,7 @@ const struct vm_guest_mode_params vm_guest_mode_params[] = {
 _Static_assert(sizeof(vm_guest_mode_params)/sizeof(struct vm_guest_mode_params) == NUM_VM_MODES,
 	       "Missing new mode params?");
 
-struct kvm_vm *____vm_create(enum vm_guest_mode mode, uint64_t nr_pages)
+struct kvm_vm *____vm_create(enum vm_guest_mode mode, uint64_t nr_pages, int type)
 {
 	struct kvm_vm *vm;
 
@@ -159,7 +159,7 @@ struct kvm_vm *____vm_create(enum vm_guest_mode mode, uint64_t nr_pages)
 	hash_init(vm->regions.slot_hash);
 
 	vm->mode = mode;
-	vm->type = 0;
+	vm->type = type;
 
 	vm->pa_bits = vm_guest_mode_params[mode].pa_bits;
 	vm->va_bits = vm_guest_mode_params[mode].va_bits;
@@ -294,7 +294,7 @@ struct kvm_vm *__vm_create(enum vm_guest_mode mode, uint32_t nr_runnable_vcpus,
 						 nr_extra_pages);
 	struct kvm_vm *vm;
 
-	vm = ____vm_create(mode, nr_pages);
+	vm = ____vm_create(mode, nr_pages, KVM_VM_TYPE_DEFAULT);
 
 	kvm_vm_elf_load(vm, program_invocation_name);
 
-- 
2.37.2.789.g6183377224-goog