KVM: s390: add kselftests

This is the initial implementation for KVM selftests on s390.
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Merge tag 'kvm-s390-next-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

KVM: s390: add kselftests

This is the initial implementation for KVM selftests on s390.
This commit is contained in:
Paolo Bonzini 2019-07-15 12:50:46 +02:00
commit fd4198bf17
10 changed files with 494 additions and 10 deletions

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@ -8797,6 +8797,8 @@ F: arch/s390/include/asm/gmap.h
F: arch/s390/include/asm/kvm*
F: arch/s390/kvm/
F: arch/s390/mm/gmap.c
F: tools/testing/selftests/kvm/s390x/
F: tools/testing/selftests/kvm/*/s390x/
KERNEL VIRTUAL MACHINE FOR X86 (KVM/x86)
M: Paolo Bonzini <pbonzini@redhat.com>

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@ -10,11 +10,11 @@ UNAME_M := $(shell uname -m)
LIBKVM = lib/assert.c lib/elf.c lib/io.c lib/kvm_util.c lib/ucall.c lib/sparsebit.c
LIBKVM_x86_64 = lib/x86_64/processor.c lib/x86_64/vmx.c
LIBKVM_aarch64 = lib/aarch64/processor.c
LIBKVM_s390x = lib/s390x/processor.c
TEST_GEN_PROGS_x86_64 = x86_64/cr4_cpuid_sync_test
TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test
TEST_GEN_PROGS_x86_64 += x86_64/hyperv_cpuid
TEST_GEN_PROGS_x86_64 += x86_64/kvm_create_max_vcpus
TEST_GEN_PROGS_x86_64 += x86_64/mmio_warning_test
TEST_GEN_PROGS_x86_64 += x86_64/platform_info_test
TEST_GEN_PROGS_x86_64 += x86_64/set_sregs_test
@ -26,9 +26,14 @@ TEST_GEN_PROGS_x86_64 += x86_64/vmx_set_nested_state_test
TEST_GEN_PROGS_x86_64 += x86_64/vmx_tsc_adjust_test
TEST_GEN_PROGS_x86_64 += clear_dirty_log_test
TEST_GEN_PROGS_x86_64 += dirty_log_test
TEST_GEN_PROGS_x86_64 += kvm_create_max_vcpus
TEST_GEN_PROGS_aarch64 += clear_dirty_log_test
TEST_GEN_PROGS_aarch64 += dirty_log_test
TEST_GEN_PROGS_aarch64 += kvm_create_max_vcpus
TEST_GEN_PROGS_s390x += s390x/sync_regs_test
TEST_GEN_PROGS_s390x += kvm_create_max_vcpus
TEST_GEN_PROGS += $(TEST_GEN_PROGS_$(UNAME_M))
LIBKVM += $(LIBKVM_$(UNAME_M))
@ -43,7 +48,12 @@ CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \
no-pie-option := $(call try-run, echo 'int main() { return 0; }' | \
$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)
LDFLAGS += -pthread $(no-pie-option)
# On s390, build the testcases KVM-enabled
pgste-option = $(call try-run, echo 'int main() { return 0; }' | \
$(CC) -Werror -Wl$(comma)--s390-pgste -x c - -o "$$TMP",-Wl$(comma)--s390-pgste)
LDFLAGS += -pthread $(no-pie-option) $(pgste-option)
# After inclusion, $(OUTPUT) is defined and
# $(TEST_GEN_PROGS) starts with $(OUTPUT)/

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@ -41,6 +41,12 @@ enum vm_guest_mode {
NUM_VM_MODES,
};
#ifdef __aarch64__
#define VM_MODE_DEFAULT VM_MODE_P40V48_4K
#else
#define VM_MODE_DEFAULT VM_MODE_P52V48_4K
#endif
#define vm_guest_mode_string(m) vm_guest_mode_string[m]
extern const char * const vm_guest_mode_string[];
@ -111,10 +117,12 @@ void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_sregs *sregs);
int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_sregs *sregs);
#ifdef __KVM_HAVE_VCPU_EVENTS
void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_vcpu_events *events);
void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_vcpu_events *events);
#endif
#ifdef __x86_64__
void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_nested_state *state);

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@ -0,0 +1,22 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* s390x processor specific defines
*/
#ifndef SELFTEST_KVM_PROCESSOR_H
#define SELFTEST_KVM_PROCESSOR_H
/* Bits in the region/segment table entry */
#define REGION_ENTRY_ORIGIN ~0xfffUL /* region/segment table origin */
#define REGION_ENTRY_PROTECT 0x200 /* region protection bit */
#define REGION_ENTRY_NOEXEC 0x100 /* region no-execute bit */
#define REGION_ENTRY_OFFSET 0xc0 /* region table offset */
#define REGION_ENTRY_INVALID 0x20 /* invalid region table entry */
#define REGION_ENTRY_TYPE 0x0c /* region/segment table type mask */
#define REGION_ENTRY_LENGTH 0x03 /* region third length */
/* Bits in the page table entry */
#define PAGE_INVALID 0x400 /* HW invalid bit */
#define PAGE_PROTECT 0x200 /* HW read-only bit */
#define PAGE_NOEXEC 0x100 /* HW no-execute bit */
#endif

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@ -27,7 +27,7 @@ void test_vcpu_creation(int first_vcpu_id, int num_vcpus)
printf("Testing creating %d vCPUs, with IDs %d...%d.\n",
num_vcpus, first_vcpu_id, first_vcpu_id + num_vcpus - 1);
vm = vm_create(VM_MODE_P52V48_4K, DEFAULT_GUEST_PHY_PAGES, O_RDWR);
vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES, O_RDWR);
for (i = 0; i < num_vcpus; i++) {
int vcpu_id = first_vcpu_id + i;

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@ -227,7 +227,7 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
uint64_t extra_pg_pages = (extra_mem_pages / ptrs_per_4k_pte) * 2;
struct kvm_vm *vm;
vm = vm_create(VM_MODE_P40V48_4K, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
vm_vcpu_add_default(vm, vcpuid, guest_code);

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@ -556,6 +556,7 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
int ret;
struct userspace_mem_region *region;
size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size;
size_t alignment;
TEST_ASSERT((guest_paddr % vm->page_size) == 0, "Guest physical "
"address not on a page boundary.\n"
@ -605,9 +606,20 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
TEST_ASSERT(region != NULL, "Insufficient Memory");
region->mmap_size = npages * vm->page_size;
/* Enough memory to align up to a huge page. */
#ifdef __s390x__
/* On s390x, the host address must be aligned to 1M (due to PGSTEs) */
alignment = 0x100000;
#else
alignment = 1;
#endif
if (src_type == VM_MEM_SRC_ANONYMOUS_THP)
region->mmap_size += huge_page_size;
alignment = max(huge_page_size, alignment);
/* Add enough memory to align up if necessary */
if (alignment > 1)
region->mmap_size += alignment;
region->mmap_start = mmap(NULL, region->mmap_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS
@ -617,9 +629,8 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm,
"test_malloc failed, mmap_start: %p errno: %i",
region->mmap_start, errno);
/* Align THP allocation up to start of a huge page. */
region->host_mem = align(region->mmap_start,
src_type == VM_MEM_SRC_ANONYMOUS_THP ? huge_page_size : 1);
/* Align host address */
region->host_mem = align(region->mmap_start, alignment);
/* As needed perform madvise */
if (src_type == VM_MEM_SRC_ANONYMOUS || src_type == VM_MEM_SRC_ANONYMOUS_THP) {
@ -1218,6 +1229,7 @@ void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs)
ret, errno);
}
#ifdef __KVM_HAVE_VCPU_EVENTS
void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid,
struct kvm_vcpu_events *events)
{
@ -1243,6 +1255,7 @@ void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
TEST_ASSERT(ret == 0, "KVM_SET_VCPU_EVENTS, failed, rc: %i errno: %i",
ret, errno);
}
#endif
#ifdef __x86_64__
void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,

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@ -0,0 +1,278 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* KVM selftest s390x library code - CPU-related functions (page tables...)
*
* Copyright (C) 2019, Red Hat, Inc.
*/
#define _GNU_SOURCE /* for program_invocation_name */
#include "processor.h"
#include "kvm_util.h"
#include "../kvm_util_internal.h"
#define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
#define PAGES_PER_REGION 4
void virt_pgd_alloc(struct kvm_vm *vm, uint32_t memslot)
{
vm_paddr_t paddr;
TEST_ASSERT(vm->page_size == 4096, "Unsupported page size: 0x%x",
vm->page_size);
if (vm->pgd_created)
return;
paddr = vm_phy_pages_alloc(vm, PAGES_PER_REGION,
KVM_GUEST_PAGE_TABLE_MIN_PADDR, memslot);
memset(addr_gpa2hva(vm, paddr), 0xff, PAGES_PER_REGION * vm->page_size);
vm->pgd = paddr;
vm->pgd_created = true;
}
/*
* Allocate 4 pages for a region/segment table (ri < 4), or one page for
* a page table (ri == 4). Returns a suitable region/segment table entry
* which points to the freshly allocated pages.
*/
static uint64_t virt_alloc_region(struct kvm_vm *vm, int ri, uint32_t memslot)
{
uint64_t taddr;
taddr = vm_phy_pages_alloc(vm, ri < 4 ? PAGES_PER_REGION : 1,
KVM_GUEST_PAGE_TABLE_MIN_PADDR, memslot);
memset(addr_gpa2hva(vm, taddr), 0xff, PAGES_PER_REGION * vm->page_size);
return (taddr & REGION_ENTRY_ORIGIN)
| (((4 - ri) << 2) & REGION_ENTRY_TYPE)
| ((ri < 4 ? (PAGES_PER_REGION - 1) : 0) & REGION_ENTRY_LENGTH);
}
/*
* VM Virtual Page Map
*
* Input Args:
* vm - Virtual Machine
* gva - VM Virtual Address
* gpa - VM Physical Address
* memslot - Memory region slot for new virtual translation tables
*
* Output Args: None
*
* Return: None
*
* Within the VM given by vm, creates a virtual translation for the page
* starting at vaddr to the page starting at paddr.
*/
void virt_pg_map(struct kvm_vm *vm, uint64_t gva, uint64_t gpa,
uint32_t memslot)
{
int ri, idx;
uint64_t *entry;
TEST_ASSERT((gva % vm->page_size) == 0,
"Virtual address not on page boundary,\n"
" vaddr: 0x%lx vm->page_size: 0x%x",
gva, vm->page_size);
TEST_ASSERT(sparsebit_is_set(vm->vpages_valid,
(gva >> vm->page_shift)),
"Invalid virtual address, vaddr: 0x%lx",
gva);
TEST_ASSERT((gpa % vm->page_size) == 0,
"Physical address not on page boundary,\n"
" paddr: 0x%lx vm->page_size: 0x%x",
gva, vm->page_size);
TEST_ASSERT((gpa >> vm->page_shift) <= vm->max_gfn,
"Physical address beyond beyond maximum supported,\n"
" paddr: 0x%lx vm->max_gfn: 0x%lx vm->page_size: 0x%x",
gva, vm->max_gfn, vm->page_size);
/* Walk through region and segment tables */
entry = addr_gpa2hva(vm, vm->pgd);
for (ri = 1; ri <= 4; ri++) {
idx = (gva >> (64 - 11 * ri)) & 0x7ffu;
if (entry[idx] & REGION_ENTRY_INVALID)
entry[idx] = virt_alloc_region(vm, ri, memslot);
entry = addr_gpa2hva(vm, entry[idx] & REGION_ENTRY_ORIGIN);
}
/* Fill in page table entry */
idx = (gva >> 12) & 0x0ffu; /* page index */
if (!(entry[idx] & PAGE_INVALID))
fprintf(stderr,
"WARNING: PTE for gpa=0x%"PRIx64" already set!\n", gpa);
entry[idx] = gpa;
}
/*
* Address Guest Virtual to Guest Physical
*
* Input Args:
* vm - Virtual Machine
* gpa - VM virtual address
*
* Output Args: None
*
* Return:
* Equivalent VM physical address
*
* Translates the VM virtual address given by gva to a VM physical
* address and then locates the memory region containing the VM
* physical address, within the VM given by vm. When found, the host
* virtual address providing the memory to the vm physical address is
* returned.
* A TEST_ASSERT failure occurs if no region containing translated
* VM virtual address exists.
*/
vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
{
int ri, idx;
uint64_t *entry;
TEST_ASSERT(vm->page_size == 4096, "Unsupported page size: 0x%x",
vm->page_size);
entry = addr_gpa2hva(vm, vm->pgd);
for (ri = 1; ri <= 4; ri++) {
idx = (gva >> (64 - 11 * ri)) & 0x7ffu;
TEST_ASSERT(!(entry[idx] & REGION_ENTRY_INVALID),
"No region mapping for vm virtual address 0x%lx",
gva);
entry = addr_gpa2hva(vm, entry[idx] & REGION_ENTRY_ORIGIN);
}
idx = (gva >> 12) & 0x0ffu; /* page index */
TEST_ASSERT(!(entry[idx] & PAGE_INVALID),
"No page mapping for vm virtual address 0x%lx", gva);
return (entry[idx] & ~0xffful) + (gva & 0xffful);
}
static void virt_dump_ptes(FILE *stream, struct kvm_vm *vm, uint8_t indent,
uint64_t ptea_start)
{
uint64_t *pte, ptea;
for (ptea = ptea_start; ptea < ptea_start + 0x100 * 8; ptea += 8) {
pte = addr_gpa2hva(vm, ptea);
if (*pte & PAGE_INVALID)
continue;
fprintf(stream, "%*spte @ 0x%lx: 0x%016lx\n",
indent, "", ptea, *pte);
}
}
static void virt_dump_region(FILE *stream, struct kvm_vm *vm, uint8_t indent,
uint64_t reg_tab_addr)
{
uint64_t addr, *entry;
for (addr = reg_tab_addr; addr < reg_tab_addr + 0x400 * 8; addr += 8) {
entry = addr_gpa2hva(vm, addr);
if (*entry & REGION_ENTRY_INVALID)
continue;
fprintf(stream, "%*srt%lde @ 0x%lx: 0x%016lx\n",
indent, "", 4 - ((*entry & REGION_ENTRY_TYPE) >> 2),
addr, *entry);
if (*entry & REGION_ENTRY_TYPE) {
virt_dump_region(stream, vm, indent + 2,
*entry & REGION_ENTRY_ORIGIN);
} else {
virt_dump_ptes(stream, vm, indent + 2,
*entry & REGION_ENTRY_ORIGIN);
}
}
}
void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent)
{
if (!vm->pgd_created)
return;
virt_dump_region(stream, vm, indent, vm->pgd);
}
/*
* Create a VM with reasonable defaults
*
* Input Args:
* vcpuid - The id of the single VCPU to add to the VM.
* extra_mem_pages - The size of extra memories to add (this will
* decide how much extra space we will need to
* setup the page tables using mem slot 0)
* guest_code - The vCPU's entry point
*
* Output Args: None
*
* Return:
* Pointer to opaque structure that describes the created VM.
*/
struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
void *guest_code)
{
/*
* The additional amount of pages required for the page tables is:
* 1 * n / 256 + 4 * (n / 256) / 2048 + 4 * (n / 256) / 2048^2 + ...
* which is definitely smaller than (n / 256) * 2.
*/
uint64_t extra_pg_pages = extra_mem_pages / 256 * 2;
struct kvm_vm *vm;
vm = vm_create(VM_MODE_DEFAULT,
DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
vm_vcpu_add_default(vm, vcpuid, guest_code);
return vm;
}
/*
* Adds a vCPU with reasonable defaults (i.e. a stack and initial PSW)
*
* Input Args:
* vcpuid - The id of the VCPU to add to the VM.
* guest_code - The vCPU's entry point
*/
void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code)
{
size_t stack_size = DEFAULT_STACK_PGS * getpagesize();
uint64_t stack_vaddr;
struct kvm_regs regs;
struct kvm_sregs sregs;
struct kvm_run *run;
TEST_ASSERT(vm->page_size == 4096, "Unsupported page size: 0x%x",
vm->page_size);
stack_vaddr = vm_vaddr_alloc(vm, stack_size,
DEFAULT_GUEST_STACK_VADDR_MIN, 0, 0);
vm_vcpu_add(vm, vcpuid);
/* Setup guest registers */
vcpu_regs_get(vm, vcpuid, &regs);
regs.gprs[15] = stack_vaddr + (DEFAULT_STACK_PGS * getpagesize()) - 160;
vcpu_regs_set(vm, vcpuid, &regs);
vcpu_sregs_get(vm, vcpuid, &sregs);
sregs.crs[0] |= 0x00040000; /* Enable floating point regs */
sregs.crs[1] = vm->pgd | 0xf; /* Primary region table */
vcpu_sregs_set(vm, vcpuid, &sregs);
run = vcpu_state(vm, vcpuid);
run->psw_mask = 0x0400000180000000ULL; /* DAT enabled + 64 bit mode */
run->psw_addr = (uintptr_t)guest_code;
}
void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent)
{
struct vcpu *vcpu = vm->vcpu_head;
fprintf(stream, "%*spstate: psw: 0x%.16llx:0x%.16llx\n",
indent, "", vcpu->state->psw_mask, vcpu->state->psw_addr);
}

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@ -821,7 +821,7 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
uint64_t extra_pg_pages = extra_mem_pages / 512 * 2;
/* Create VM */
vm = vm_create(VM_MODE_P52V48_4K,
vm = vm_create(VM_MODE_DEFAULT,
DEFAULT_GUEST_PHY_PAGES + extra_pg_pages,
O_RDWR);

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@ -0,0 +1,151 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Test for s390x KVM_CAP_SYNC_REGS
*
* Based on the same test for x86:
* Copyright (C) 2018, Google LLC.
*
* Adaptions for s390x:
* Copyright (C) 2019, Red Hat, Inc.
*
* Test expected behavior of the KVM_CAP_SYNC_REGS functionality.
*/
#define _GNU_SOURCE /* for program_invocation_short_name */
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include "test_util.h"
#include "kvm_util.h"
#define VCPU_ID 5
static void guest_code(void)
{
for (;;) {
asm volatile ("diag 0,0,0x501");
asm volatile ("ahi 11,1");
}
}
#define REG_COMPARE(reg) \
TEST_ASSERT(left->reg == right->reg, \
"Register " #reg \
" values did not match: 0x%llx, 0x%llx\n", \
left->reg, right->reg)
static void compare_regs(struct kvm_regs *left, struct kvm_sync_regs *right)
{
int i;
for (i = 0; i < 16; i++)
REG_COMPARE(gprs[i]);
}
static void compare_sregs(struct kvm_sregs *left, struct kvm_sync_regs *right)
{
int i;
for (i = 0; i < 16; i++)
REG_COMPARE(acrs[i]);
for (i = 0; i < 16; i++)
REG_COMPARE(crs[i]);
}
#undef REG_COMPARE
#define TEST_SYNC_FIELDS (KVM_SYNC_GPRS|KVM_SYNC_ACRS|KVM_SYNC_CRS)
#define INVALID_SYNC_FIELD 0x80000000
int main(int argc, char *argv[])
{
struct kvm_vm *vm;
struct kvm_run *run;
struct kvm_regs regs;
struct kvm_sregs sregs;
int rv, cap;
/* Tell stdout not to buffer its content */
setbuf(stdout, NULL);
cap = kvm_check_cap(KVM_CAP_SYNC_REGS);
if (!cap) {
fprintf(stderr, "CAP_SYNC_REGS not supported, skipping test\n");
exit(KSFT_SKIP);
}
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code);
run = vcpu_state(vm, VCPU_ID);
/* Request and verify all valid register sets. */
run->kvm_valid_regs = TEST_SYNC_FIELDS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s390_sieic.icptcode == 4 &&
(run->s390_sieic.ipa >> 8) == 0x83 &&
(run->s390_sieic.ipb >> 16) == 0x501,
"Unexpected interception code: ic=%u, ipa=0x%x, ipb=0x%x\n",
run->s390_sieic.icptcode, run->s390_sieic.ipa,
run->s390_sieic.ipb);
vcpu_regs_get(vm, VCPU_ID, &regs);
compare_regs(&regs, &run->s.regs);
vcpu_sregs_get(vm, VCPU_ID, &sregs);
compare_sregs(&sregs, &run->s.regs);
/* Set and verify various register values */
run->s.regs.gprs[11] = 0xBAD1DEA;
run->s.regs.acrs[0] = 1 << 11;
run->kvm_valid_regs = TEST_SYNC_FIELDS;
run->kvm_dirty_regs = KVM_SYNC_GPRS | KVM_SYNC_ACRS;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.gprs[11] == 0xBAD1DEA + 1,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.gprs[11]);
TEST_ASSERT(run->s.regs.acrs[0] == 1 << 11,
"acr0 sync regs value incorrect 0x%llx.",
run->s.regs.acrs[0]);
vcpu_regs_get(vm, VCPU_ID, &regs);
compare_regs(&regs, &run->s.regs);
vcpu_sregs_get(vm, VCPU_ID, &sregs);
compare_sregs(&sregs, &run->s.regs);
/* Clear kvm_dirty_regs bits, verify new s.regs values are
* overwritten with existing guest values.
*/
run->kvm_valid_regs = TEST_SYNC_FIELDS;
run->kvm_dirty_regs = 0;
run->s.regs.gprs[11] = 0xDEADBEEF;
rv = _vcpu_run(vm, VCPU_ID);
TEST_ASSERT(rv == 0, "vcpu_run failed: %d\n", rv);
TEST_ASSERT(run->exit_reason == KVM_EXIT_S390_SIEIC,
"Unexpected exit reason: %u (%s)\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
TEST_ASSERT(run->s.regs.gprs[11] != 0xDEADBEEF,
"r11 sync regs value incorrect 0x%llx.",
run->s.regs.gprs[11]);
kvm_vm_free(vm);
return 0;
}