linux-kernel - [PATCH v9 1/5] KVM: selftests: Add VM_MODE_P47V47

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Message-Id: <20250416035455.25996-2-maobibo@loongson.cn>
Date: Wed, 16 Apr 2025 11:54:51 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Paolo Bonzini <pbonzini@...hat.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	Sean Christopherson <seanjc@...gle.com>
Cc: Shuah Khan <shuah@...nel.org>,
	linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org,
	linux-kselftest@...r.kernel.org
Subject: [PATCH v9 1/5] KVM: selftests: Add VM_MODE_P47V47_16K vm mode

On LoongArch system, GVA width is 47 bit and GPA width is 47 bit also,
here add new vm mode VM_MODE_P47V47_16K.

Signed-off-by: Bibo Mao <maobibo@...ngson.cn>
---
 tools/testing/selftests/kvm/include/kvm_util.h | 1 +
 tools/testing/selftests/kvm/lib/kvm_util.c     | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
index 373912464fb4..f8faed8c8024 100644
--- a/tools/testing/selftests/kvm/include/kvm_util.h
+++ b/tools/testing/selftests/kvm/include/kvm_util.h
@@ -177,6 +177,7 @@ enum vm_guest_mode {
 	VM_MODE_P36V48_4K,
 	VM_MODE_P36V48_16K,
 	VM_MODE_P36V48_64K,
+	VM_MODE_P47V47_16K,
 	VM_MODE_P36V47_16K,
 	NUM_VM_MODES,
 };
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index 815bc45dd8dc..5649cf2f40e8 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -222,6 +222,7 @@ const char *vm_guest_mode_string(uint32_t i)
 		[VM_MODE_P36V48_4K]	= "PA-bits:36,  VA-bits:48,  4K pages",
 		[VM_MODE_P36V48_16K]	= "PA-bits:36,  VA-bits:48, 16K pages",
 		[VM_MODE_P36V48_64K]	= "PA-bits:36,  VA-bits:48, 64K pages",
+		[VM_MODE_P47V47_16K]	= "PA-bits:47,  VA-bits:47, 16K pages",
 		[VM_MODE_P36V47_16K]	= "PA-bits:36,  VA-bits:47, 16K pages",
 	};
 	_Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES,
@@ -248,6 +249,7 @@ const struct vm_guest_mode_params vm_guest_mode_params[] = {
 	[VM_MODE_P36V48_4K]	= { 36, 48,  0x1000, 12 },
 	[VM_MODE_P36V48_16K]	= { 36, 48,  0x4000, 14 },
 	[VM_MODE_P36V48_64K]	= { 36, 48, 0x10000, 16 },
+	[VM_MODE_P47V47_16K]	= { 47, 47,  0x4000, 14 },
 	[VM_MODE_P36V47_16K]	= { 36, 47,  0x4000, 14 },
 };
 _Static_assert(sizeof(vm_guest_mode_params)/sizeof(struct vm_guest_mode_params) == NUM_VM_MODES,
@@ -319,6 +321,7 @@ struct kvm_vm *____vm_create(struct vm_shape shape)
 	case VM_MODE_P36V48_16K:
 		vm->pgtable_levels = 4;
 		break;
+	case VM_MODE_P47V47_16K:
 	case VM_MODE_P36V47_16K:
 		vm->pgtable_levels = 3;
 		break;
-- 
2.39.3