1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* tools/testing/selftests/kvm/include/x86_64/svm_utils.h
* Header for nested SVM testing
*
* Copyright (C) 2020, Red Hat, Inc.
*/
#ifndef SELFTEST_KVM_SVM_UTILS_H
#define SELFTEST_KVM_SVM_UTILS_H
#include <asm/svm.h>
#include <stdint.h>
#include "svm.h"
#include "processor.h"
struct svm_test_data {
/* VMCB */
struct vmcb *vmcb; /* gva */
void *vmcb_hva;
uint64_t vmcb_gpa;
/* host state-save area */
struct vmcb_save_area *save_area; /* gva */
void *save_area_hva;
uint64_t save_area_gpa;
/* MSR-Bitmap */
void *msr; /* gva */
void *msr_hva;
uint64_t msr_gpa;
};
static inline void vmmcall(void)
{
/*
* Stuff RAX and RCX with "safe" values to make sure L0 doesn't handle
* it as a valid hypercall (e.g. Hyper-V L2 TLB flush) as the intended
* use of this function is to exit to L1 from L2. Clobber all other
* GPRs as L1 doesn't correctly preserve them during vmexits.
*/
__asm__ __volatile__("push %%rbp; vmmcall; pop %%rbp"
: : "a"(0xdeadbeef), "c"(0xbeefdead)
: "rbx", "rdx", "rsi", "rdi", "r8", "r9",
"r10", "r11", "r12", "r13", "r14", "r15");
}
#define stgi() \
__asm__ __volatile__( \
"stgi\n" \
)
#define clgi() \
__asm__ __volatile__( \
"clgi\n" \
)
struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva);
void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp);
void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa);
int open_sev_dev_path_or_exit(void);
#endif /* SELFTEST_KVM_SVM_UTILS_H */
|
