linux-kernel - [RFC 11/12] KVM: arm/arm64: Add KVM_VGIC_V3_ADDR_TYPE_REDIST

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Message-Id: <1521451220-27754-12-git-send-email-eric.auger@redhat.com>
Date:   Mon, 19 Mar 2018 10:20:19 +0100
From:   Eric Auger <eric.auger@...hat.com>
To:     eric.auger.pro@...il.com, eric.auger@...hat.com,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu, marc.zyngier@....com,
        cdall@...nel.org, peter.maydell@...aro.org
Cc:     andre.przywara@....com, drjones@...hat.com, wei@...hat.com
Subject: [RFC 11/12] KVM: arm/arm64: Add KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION

This new attribute allows the userspace to set the base address
of a reditributor region, relaxing the constraint of having all
consecutive redistibutor frames contiguous.

Signed-off-by: Eric Auger <eric.auger@...hat.com>
---
 arch/arm/include/uapi/asm/kvm.h   | 7 ++++---
 arch/arm64/include/uapi/asm/kvm.h | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arch/arm/include/uapi/asm/kvm.h b/arch/arm/include/uapi/asm/kvm.h
index 6edd177..ce67f1d 100644
--- a/arch/arm/include/uapi/asm/kvm.h
+++ b/arch/arm/include/uapi/asm/kvm.h
@@ -88,9 +88,10 @@ struct kvm_regs {
 #define KVM_VGIC_V2_CPU_SIZE		0x2000
 
 /* Supported VGICv3 address types  */
-#define KVM_VGIC_V3_ADDR_TYPE_DIST	2
-#define KVM_VGIC_V3_ADDR_TYPE_REDIST	3
-#define KVM_VGIC_ITS_ADDR_TYPE		4
+#define KVM_VGIC_V3_ADDR_TYPE_DIST		2
+#define KVM_VGIC_V3_ADDR_TYPE_REDIST		3
+#define KVM_VGIC_ITS_ADDR_TYPE			4
+#define KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION	5
 
 #define KVM_VGIC_V3_DIST_SIZE		SZ_64K
 #define KVM_VGIC_V3_REDIST_SIZE		(2 * SZ_64K)
diff --git a/arch/arm64/include/uapi/asm/kvm.h b/arch/arm64/include/uapi/asm/kvm.h
index 9abbf30..ef8ad3b 100644
--- a/arch/arm64/include/uapi/asm/kvm.h
+++ b/arch/arm64/include/uapi/asm/kvm.h
@@ -88,9 +88,10 @@ struct kvm_regs {
 #define KVM_VGIC_V2_CPU_SIZE		0x2000
 
 /* Supported VGICv3 address types  */
-#define KVM_VGIC_V3_ADDR_TYPE_DIST	2
-#define KVM_VGIC_V3_ADDR_TYPE_REDIST	3
-#define KVM_VGIC_ITS_ADDR_TYPE		4
+#define KVM_VGIC_V3_ADDR_TYPE_DIST		2
+#define KVM_VGIC_V3_ADDR_TYPE_REDIST		3
+#define KVM_VGIC_ITS_ADDR_TYPE			4
+#define KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION	5
 
 #define KVM_VGIC_V3_DIST_SIZE		SZ_64K
 #define KVM_VGIC_V3_REDIST_SIZE		(2 * SZ_64K)
-- 
2.5.5