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kvm: selftests: add vcpu support for aarch64

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This code adds VM and VCPU setup code for the VM_MODE_FLAT48PG mode.
The VM_MODE_FLAT48PG isn't yet fully supportable, as it defines the
guest physical address limit as 52-bits, and KVM currently only
supports guests with up to 40-bit physical addresses (see
KVM_PHYS_SHIFT). VM_MODE_FLAT48PG will work fine, though, as long as
no >= 40-bit physical addresses are used.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Andrew Jones
2018-09-18 19:54:31 +02:00
committed by Paolo Bonzini
parent 7a6629ef74
commit 0bec140fb6
2 changed files with 138 additions and 0 deletions
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55
tools/testing/selftests/kvm/include/aarch64/processor.h Normal file
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* AArch64 processor specific defines
*
* Copyright (C) 2018, Red Hat, Inc.
*/
#ifndef SELFTEST_KVM_PROCESSOR_H
#define SELFTEST_KVM_PROCESSOR_H
#include "kvm_util.h"
#define ARM64_CORE_REG(x) (KVM_REG_ARM64 | KVM_REG_SIZE_U64 | \
KVM_REG_ARM_CORE | KVM_REG_ARM_CORE_REG(x))
#define CPACR_EL1 3, 0, 1, 0, 2
#define TCR_EL1 3, 0, 2, 0, 2
#define MAIR_EL1 3, 0, 10, 2, 0
#define TTBR0_EL1 3, 0, 2, 0, 0
#define SCTLR_EL1 3, 0, 1, 0, 0
/*
* Default MAIR
* index attribute
* DEVICE_nGnRnE 0 0000:0000
* DEVICE_nGnRE 1 0000:0100
* DEVICE_GRE 2 0000:1100
* NORMAL_NC 3 0100:0100
* NORMAL 4 1111:1111
* NORMAL_WT 5 1011:1011
*/
#define DEFAULT_MAIR_EL1 ((0x00ul << (0 * 8)) | \
(0x04ul << (1 * 8)) | \
(0x0cul << (2 * 8)) | \
(0x44ul << (3 * 8)) | \
(0xfful << (4 * 8)) | \
(0xbbul << (5 * 8)))
static inline void get_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, uint64_t *addr)
{
struct kvm_one_reg reg;
reg.id = id;
reg.addr = (uint64_t)addr;
vcpu_ioctl(vm, vcpuid, KVM_GET_ONE_REG, &reg);
}
static inline void set_reg(struct kvm_vm *vm, uint32_t vcpuid, uint64_t id, uint64_t val)
{
struct kvm_one_reg reg;
reg.id = id;
reg.addr = (uint64_t)&val;
vcpu_ioctl(vm, vcpuid, KVM_SET_ONE_REG, &reg);
}
#endif /* SELFTEST_KVM_PROCESSOR_H */