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From: "Pratik R. Sampat" <prsampat@amd.com>
To: <linux-kernel@vger.kernel.org>, <x86@kernel.org>,
	<kvm@vger.kernel.org>, <linux-crypto@vger.kernel.org>,
	<linux-kselftest@vger.kernel.org>
Cc: <seanjc@google.com>, <pbonzini@redhat.com>,
	<thomas.lendacky@amd.com>, <tglx@linutronix.de>,
	<mingo@redhat.com>, <bp@alien8.de>, <dave.hansen@linux.intel.com>,
	<shuah@kernel.org>, <pgonda@google.com>, <ashish.kalra@amd.com>,
	<nikunj@amd.com>, <pankaj.gupta@amd.com>, <michael.roth@amd.com>,
	<sraithal@amd.com>, <prsampat@amd.com>
Subject: [PATCH v6 7/9] KVM: selftests: Force GUEST_MEMFD flag for SNP VM type
Date: Mon, 3 Feb 2025 16:32:03 -0600	[thread overview]
Message-ID: <20250203223205.36121-8-prsampat@amd.com> (raw)
In-Reply-To: <20250203223205.36121-1-prsampat@amd.com>

Force the SEV-SNP VM type to set the KVM_MEM_GUEST_MEMFD flag for the
creation of private memslots.

Tested-by: Srikanth Aithal <sraithal@amd.com>
Signed-off-by: Pratik R. Sampat <prsampat@amd.com>
---
v5..v6:

* Collected tags from Srikanth.
---
 tools/testing/selftests/kvm/lib/kvm_util.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 33fefeb3ca44..089488e2eaf6 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -413,14 +413,17 @@ struct kvm_vm *__vm_create(struct vm_shape shape, uint32_t nr_runnable_vcpus,
 						 nr_extra_pages);
 	struct userspace_mem_region *slot0;
 	struct kvm_vm *vm;
-	int i;
+	int i, flags = 0;
 
 	pr_debug("%s: mode='%s' type='%d', pages='%ld'\n", __func__,
 		 vm_guest_mode_string(shape.mode), shape.type, nr_pages);
 
 	vm = ____vm_create(shape);
 
-	vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, nr_pages, 0);
+	if (shape.type == KVM_X86_SNP_VM)
+		flags |=  KVM_MEM_GUEST_MEMFD;
+
+	vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, 0, 0, nr_pages, flags);
 	for (i = 0; i < NR_MEM_REGIONS; i++)
 		vm->memslots[i] = 0;
 
-- 
2.43.0


  parent reply	other threads:[~2025-02-03 22:33 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-03 22:31 [PATCH v6 0/9] Basic SEV-SNP Selftests Pratik R. Sampat
2025-02-03 22:31 ` [PATCH v6 1/9] KVM: SEV: Disable SEV-SNP on FW validation failure Pratik R. Sampat
2025-02-12  1:54   ` Sean Christopherson
2025-02-14 18:07     ` Pratik Rajesh Sampat
2025-02-03 22:31 ` [PATCH v6 2/9] KVM: SEV: Disable SEV on platform init failure Pratik R. Sampat
2025-02-12  1:58   ` Sean Christopherson
2025-02-14 18:09     ` Pratik Rajesh Sampat
2025-02-03 22:31 ` [PATCH v6 3/9] KVM: selftests: SEV-SNP test for KVM_SEV_INIT2 Pratik R. Sampat
2025-02-03 22:32 ` [PATCH v6 4/9] KVM: selftests: Add VMGEXIT helper Pratik R. Sampat
2025-02-12  1:59   ` Sean Christopherson
2025-02-14 18:09     ` Pratik Rajesh Sampat
2025-02-03 22:32 ` [PATCH v6 5/9] KVM: selftests: Introduce SEV VM type check Pratik R. Sampat
2025-02-03 22:32 ` [PATCH v6 6/9] KVM: selftests: Add library support for interacting with SNP Pratik R. Sampat
2025-02-12  2:12   ` Sean Christopherson
2025-02-14 18:12     ` Pratik Rajesh Sampat
2025-02-19 16:55       ` Sean Christopherson
2025-02-20 16:56         ` Pratik Rajesh Sampat
2025-02-03 22:32 ` Pratik R. Sampat [this message]
2025-02-03 22:32 ` [PATCH v6 8/9] KVM: selftests: Abstractions for SEV to decouple policy from type Pratik R. Sampat
2025-02-03 22:32 ` [PATCH v6 9/9] KVM: selftests: Add a basic SEV-SNP smoke test Pratik R. Sampat
2025-02-12  2:31   ` Sean Christopherson
2025-02-14 18:14     ` Pratik Rajesh Sampat
2025-02-19  0:54       ` Sean Christopherson
2025-02-19 14:58         ` Pratik Rajesh Sampat

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