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[Qemu-devel] [kvmtool test PATCH 24/24] kvmtool: arm: Add support for cr
From: |
Suzuki K Poulose |
Subject: |
[Qemu-devel] [kvmtool test PATCH 24/24] kvmtool: arm: Add support for creating VM with PA size |
Date: |
Fri, 29 Jun 2018 12:15:44 +0100 |
Specify the physical size for the VM encoded in the vm type.
Signed-off-by: Suzuki K Poulose <address@hidden>
---
arm/include/arm-common/kvm-arch.h | 6 +++++-
arm/kvm.c | 22 ++++++++++++++++++++++
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/arm/include/arm-common/kvm-arch.h
b/arm/include/arm-common/kvm-arch.h
index b29b4b1..d77f3ac 100644
--- a/arm/include/arm-common/kvm-arch.h
+++ b/arm/include/arm-common/kvm-arch.h
@@ -44,7 +44,11 @@
#define KVM_IRQ_OFFSET GIC_SPI_IRQ_BASE
-#define KVM_VM_TYPE 0
+extern unsigned long kvm_arm_type;
+extern void kvm__arch_init_hyp(struct kvm *kvm);
+
+#define KVM_VM_TYPE kvm_arm_type
+#define kvm__arch_init_hyp kvm__arch_init_hyp
#define VIRTIO_DEFAULT_TRANS(kvm) \
((kvm)->cfg.arch.virtio_trans_pci ? VIRTIO_PCI : VIRTIO_MMIO)
diff --git a/arm/kvm.c b/arm/kvm.c
index 5701d41..b1969be 100644
--- a/arm/kvm.c
+++ b/arm/kvm.c
@@ -11,6 +11,8 @@
#include <linux/kvm.h>
#include <linux/sizes.h>
+unsigned long kvm_arm_type;
+
struct kvm_ext kvm_req_ext[] = {
{ DEFINE_KVM_EXT(KVM_CAP_IRQCHIP) },
{ DEFINE_KVM_EXT(KVM_CAP_ONE_REG) },
@@ -18,6 +20,26 @@ struct kvm_ext kvm_req_ext[] = {
{ 0, 0 },
};
+#ifndef KVM_ARM_GET_MAX_VM_PHYS_SHIFT
+#define KVM_ARM_GET_MAX_VM_PHYS_SHIFT _IO(KVMIO, 0x0b)
+#endif
+
+void kvm__arch_init_hyp(struct kvm *kvm)
+{
+ int max_ipa;
+
+ max_ipa = ioctl(kvm->sys_fd, KVM_ARM_GET_MAX_VM_PHYS_SHIFT);
+ if (max_ipa < 0)
+ max_ipa = 40;
+ if (!kvm->cfg.arch.phys_shift)
+ kvm->cfg.arch.phys_shift = 40;
+ if (kvm->cfg.arch.phys_shift > max_ipa)
+ die("Requested PA size (%u) is not supported by the host
(%ubits)\n",
+ kvm->cfg.arch.phys_shift, max_ipa);
+ if (kvm->cfg.arch.phys_shift != 40)
+ kvm_arm_type = kvm->cfg.arch.phys_shift;
+}
+
bool kvm__arch_cpu_supports_vm(void)
{
/* The KVM capability check is enough. */
--
2.7.4
- [Qemu-devel] [PATCH v3 14/20] kvm: arm/arm64: Expose supported physical address limit for VM, (continued)
- [Qemu-devel] [PATCH v3 14/20] kvm: arm/arm64: Expose supported physical address limit for VM, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 13/20] kvm: arm64: Configure VTCR per VM, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 15/20] kvm: arm/arm64: Allow tuning the physical address size for VM, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 16/20] kvm: arm64: Switch to per VM IPA limit, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 18/20] kvm: arm64: Add support for handling 52bit IPA, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 17/20] vgic: Add support for 52bit guest physical address, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 19/20] kvm: arm64: Allow IPA size supported by the system, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [kvmtool test PATCH 22/24] kvmtool: arm64: Add support for guest physical address size, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [PATCH v3 20/20] kvm: arm64: Fall back to normal stage2 entry level, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [kvmtool test PATCH 23/24] kvmtool: arm64: Switch memory layout, Suzuki K Poulose, 2018/06/29
- [Qemu-devel] [kvmtool test PATCH 24/24] kvmtool: arm: Add support for creating VM with PA size,
Suzuki K Poulose <=
- [Qemu-devel] [kvmtool test PATCH 21/24] kvmtool: Allow backends to run checks on the KVM device fd, Suzuki K Poulose, 2018/06/29