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From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: berrange@redhat.com, kchamart@redhat.com,
	pierrick.bouvier@oss.qualcomm.com, peter.maydell@linaro.org,
	mst@redhat.com, cohuck@redhat.com, pbonzini@redhat.com,
	eblake@redhat.com, armbru@redhat.com,
	lorenzo.pieralisi@linaro.org, gshan@redhat.com
Cc: qemu-devel@nongnu.org, qemu-arm@nongnu.org, kvm@vger.kernel.org
Subject: [RFC v2 01/24] linux-headers: Add RME related definitions
Date: Tue, 28 Jul 2026 13:26:07 -0600	[thread overview]
Message-ID: <20260728192630.240375-2-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20260728192630.240375-1-mathieu.poirier@linaro.org>

From: Jean-Philippe Brucker <jean-philippe@linaro.org>

This is a temporary patch intended for testing purposes only. It provides
definitions related to supporting Realms by the QEMU-VMM.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 linux-headers/asm-arm64/kvm.h |  9 +++++++++
 linux-headers/linux/kvm.h     | 10 +++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/linux-headers/asm-arm64/kvm.h b/linux-headers/asm-arm64/kvm.h
index 6aefe7973814..4c08631ec7d2 100644
--- a/linux-headers/asm-arm64/kvm.h
+++ b/linux-headers/asm-arm64/kvm.h
@@ -208,6 +208,15 @@ struct kvm_arm_counter_offset {
 	__u64 reserved;
 };
 
+#define KVM_ARM_RMI_POPULATE_FLAGS_MEASURE     (1 << 0)
+struct kvm_arm_rmi_populate {
+	__u64 base;
+	__u64 size;
+	__u64 source_uaddr;
+	__u32 flags;
+	__u32 reserved;
+};
+
 #define KVM_ARM_TAGS_TO_GUEST		0
 #define KVM_ARM_TAGS_FROM_GUEST		1
 
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index dd52e2a65bfd..cdd5ad11f85a 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -689,14 +689,19 @@ struct kvm_enable_cap {
  * address size for the VM. Bits[7-0] are reserved for the guest
  * PA size shift (i.e, log2(PA_Size)). For backward compatibility,
  * value 0 implies the default IPA size, 40bits.
+ *
+ * Bits[30-31] are reserved for the VM type
  */
 #define KVM_VM_TYPE_ARM_IPA_SIZE_MASK	0xffULL
 #define KVM_VM_TYPE_ARM_IPA_SIZE(x)		\
 	((x) & KVM_VM_TYPE_ARM_IPA_SIZE_MASK)
 
+#define KVM_VM_TYPE_ARM_NORMAL		0
+#define KVM_VM_TYPE_ARM_REALM		(1UL << 30)
 #define KVM_VM_TYPE_ARM_PROTECTED	(1UL << 31)
 #define KVM_VM_TYPE_ARM_MASK		(KVM_VM_TYPE_ARM_IPA_SIZE_MASK | \
-					 KVM_VM_TYPE_ARM_PROTECTED)
+					 KVM_VM_TYPE_ARM_PROTECTED | \
+					 KVM_VM_TYPE_ARM_REALM)
 
 /*
  * ioctls for /dev/kvm fds:
@@ -719,6 +724,8 @@ struct kvm_enable_cap {
 #define KVM_GET_EMULATED_CPUID	  _IOWR(KVMIO, 0x09, struct kvm_cpuid2)
 #define KVM_GET_MSR_FEATURE_INDEX_LIST    _IOWR(KVMIO, 0x0a, struct kvm_msr_list)
 
+#define KVM_ARM_RMI_POPULATE	  _IOWR(KVMIO, 0xd7, struct kvm_arm_rmi_populate)
+
 /*
  * Extension capability list.
  */
@@ -986,6 +993,7 @@ struct kvm_enable_cap {
 #define KVM_CAP_S390_KEYOP 247
 #define KVM_CAP_S390_VSIE_ESAMODE 248
 #define KVM_CAP_S390_HPAGE_2G 249
+#define KVM_CAP_ARM_RMI 250
 
 struct kvm_irq_routing_irqchip {
 	__u32 irqchip;
-- 
2.43.0


  reply	other threads:[~2026-07-28 19:26 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-28 19:26 [RFC v2 00/24] Add Realm support to QEMU-VMM Mathieu Poirier
2026-07-28 19:26 ` Mathieu Poirier [this message]
2026-07-30  5:41   ` [RFC v2 01/24] linux-headers: Add RME related definitions Kohei Enju
2026-07-30  6:08     ` Gavin Shan
2026-07-30  6:13       ` Kohei Enju
2026-07-28 19:26 ` [RFC v2 02/24] target/arm/kvm: Return immediately on error in kvm_arch_init() Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 03/24] target/arm: Add confidential guest support Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 04/24] target/arm/kvm-rme: Add mechanic to initialize realms Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 05/24] target/arm/kvm: Split kvm_arch_get/put_registers Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 06/24] target/arm/kvm-rme: Initialize vCPU Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 07/24] target/arm/kvm: Create scratch Realm VM when requested Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 08/24] target/arm/kvm: Use kvm_vm_check_extension() where necessary Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 09/24] hw/core/loader: Add a ROM loader notifier Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 10/24] target/arm/kvm-rme: Keep track of images loaded in Realm memory Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 11/24] target/arm/kvm-rme: Populate Realm with runtime images Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 12/24] target/arm/cpu: Set number of breakpoints and watchpoints in KVM Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 13/24] target/arm/cpu: Set number of PMU counters " Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 14/24] target/arm/cpu: Don't read Realm registers Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 15/24] hw/arm/virt: Set proper conduit method for Realms Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 16/24] hw/arm/virt: Embed Realm VM type with IPA address space Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 17/24] hw/arm/virt: Reserve one bit of guest physical address for RME Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 18/24] hw/arm/virt: Disable DTB randomness for confidential VMs Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 19/24] hw/arm/virt: Move virt_flash_create() to machvirt_init() Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 20/24] hw/arm/virt: Use RAM instead of flash for confidential guest firmware Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 21/24] target/arm/kvm-rme: Add DMA remapping for the shared memory region Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 22/24] docs/interop/firmware.json: Add arm-rme firmware feature Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 23/24] hw/arm/boot: Load DTB as is for confidential VMs Mathieu Poirier
2026-07-28 19:26 ` [RFC v2 24/24] hw/arm/boot: Skip bootloader for confidential guests Mathieu Poirier
2026-07-30  5:11 ` [RFC v2 00/24] Add Realm support to QEMU-VMM Kohei Enju
2026-08-09 13:06   ` Mathieu Poirier

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