Thread (22 messages) 22 messages, 3 authors, 2022-03-02

[PATCH 10/19] KVM: selftests: Use "standard" min virtual address for CPUID test alloc

STALE1678d

From: Sean Christopherson <seanjc@google.com>
Date: 2021-06-22 20:06:36
Also in: lkml
Subsystem: kernel selftest framework, kernel virtual machine (kvm), the rest · Maintainers: Shuah Khan, Shuah Khan, Paolo Bonzini, Linus Torvalds

Use KVM_UTIL_MIN_ADDR as the minimum for x86-64's CPUID array.  The
system page size was likely used as the minimum because _something_ had
to be provided.  Increasing the min from 0x1000 to 0x2000 should have no
meaningful impact on the test, and will allow changing vm_vaddr_alloc()
to use KVM_UTIL_MIN_VADDR as the default.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 tools/testing/selftests/kvm/x86_64/get_cpuid_test.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/testing/selftests/kvm/x86_64/get_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/get_cpuid_test.c
index 8c77537af5a1..5e5682691f87 100644
--- a/tools/testing/selftests/kvm/x86_64/get_cpuid_test.c
+++ b/tools/testing/selftests/kvm/x86_64/get_cpuid_test.c
@@ -145,8 +145,7 @@ static void run_vcpu(struct kvm_vm *vm, uint32_t vcpuid, int stage)
 struct kvm_cpuid2 *vcpu_alloc_cpuid(struct kvm_vm *vm, vm_vaddr_t *p_gva, struct kvm_cpuid2 *cpuid)
 {
 	int size = sizeof(*cpuid) + cpuid->nent * sizeof(cpuid->entries[0]);
-	vm_vaddr_t gva = vm_vaddr_alloc(vm, size,
-					getpagesize(), 0, 0);
+	vm_vaddr_t gva = vm_vaddr_alloc(vm, size, KVM_UTIL_MIN_VADDR, 0, 0);
 	struct kvm_cpuid2 *guest_cpuids = addr_gva2hva(vm, gva);
 
 	memcpy(guest_cpuids, cpuid, size);
-- 
2.32.0.288.g62a8d224e6-goog
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