* Copyright (C) 2018, Red Hat, Inc.
*/
+#define _GNU_SOURCE /* for program_invocation_name */
+
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "test_util.h"
#include "kvm_util.h"
+#include "processor.h"
+
+#define DEBUG printf
-#define DEBUG printf
+#define VCPU_ID 1
-#define VCPU_ID 1
/* The memory slot index to track dirty pages */
-#define TEST_MEM_SLOT_INDEX 1
-/*
- * GPA offset of the testing memory slot. Must be bigger than the
- * default vm mem slot, which is DEFAULT_GUEST_PHY_PAGES.
- */
-#define TEST_MEM_OFFSET (1ULL << 30) /* 1G */
-/* Size of the testing memory slot */
-#define TEST_MEM_PAGES (1ULL << 18) /* 1G for 4K pages */
+#define TEST_MEM_SLOT_INDEX 1
+
+/* Default guest test memory offset, 1G */
+#define DEFAULT_GUEST_TEST_MEM 0x40000000
+
/* How many pages to dirty for each guest loop */
-#define TEST_PAGES_PER_LOOP 1024
+#define TEST_PAGES_PER_LOOP 1024
+
/* How many host loops to run (one KVM_GET_DIRTY_LOG for each loop) */
- #define TEST_HOST_LOOP_N 32
-#define TEST_HOST_LOOP_N 32UL
++#define TEST_HOST_LOOP_N 32UL
+
/* Interval for each host loop (ms) */
- #define TEST_HOST_LOOP_INTERVAL 10
-#define TEST_HOST_LOOP_INTERVAL 10UL
++#define TEST_HOST_LOOP_INTERVAL 10UL
+
+/*
+ * Guest/Host shared variables. Ensure addr_gva2hva() and/or
+ * sync_global_to/from_guest() are used when accessing from
+ * the host. READ/WRITE_ONCE() should also be used with anything
+ * that may change.
+ */
+static uint64_t host_page_size;
+static uint64_t guest_page_size;
+static uint64_t guest_num_pages;
+static uint64_t random_array[TEST_PAGES_PER_LOOP];
+static uint64_t iteration;
/*
- * Guest variables. We use these variables to share data between host
- * and guest. There are two copies of the variables, one in host memory
- * (which is unused) and one in guest memory. When the host wants to
- * access these variables, it needs to call addr_gva2hva() to access the
- * guest copy.
+ * GPA offset of the testing memory slot. Must be bigger than
+ * DEFAULT_GUEST_PHY_PAGES.
*/
-uint64_t guest_random_array[TEST_PAGES_PER_LOOP];
-uint64_t guest_iteration;
-uint64_t guest_page_size;
+static uint64_t guest_test_mem = DEFAULT_GUEST_TEST_MEM;
/*
- * Writes to the first byte of a random page within the testing memory
- * region continuously.
+ * Continuously write to the first 8 bytes of a random pages within
+ * the testing memory region.
*/
-void guest_code(void)
+static void guest_code(void)
{
- int i = 0;
- uint64_t volatile *array = guest_random_array;
- uint64_t volatile *guest_addr;
+ int i;
while (true) {
for (i = 0; i < TEST_PAGES_PER_LOOP; i++) {
- /*
- * Write to the first 8 bytes of a random page
- * on the testing memory region.
- */
- guest_addr = (uint64_t *)
- (TEST_MEM_OFFSET +
- (array[i] % TEST_MEM_PAGES) * guest_page_size);
- *guest_addr = guest_iteration;
+ uint64_t addr = guest_test_mem;
+ addr += (READ_ONCE(random_array[i]) % guest_num_pages)
+ * guest_page_size;
+ addr &= ~(host_page_size - 1);
+ *(uint64_t *)addr = READ_ONCE(iteration);
}
+
/* Tell the host that we need more random numbers */
GUEST_SYNC(1);
}
}
-/*
- * Host variables. These variables should only be used by the host
- * rather than the guest.
- */
-bool host_quit;
+/* Host variables */
+static bool host_quit;
/* Points to the test VM memory region on which we track dirty logs */
-void *host_test_mem;
+static void *host_test_mem;
+static uint64_t host_num_pages;
/* For statistics only */
-uint64_t host_dirty_count;
-uint64_t host_clear_count;
-uint64_t host_track_next_count;
+static uint64_t host_dirty_count;
+static uint64_t host_clear_count;
+static uint64_t host_track_next_count;
/*
* We use this bitmap to track some pages that should have its dirty
* page bit is cleared in the latest bitmap, then the system must
* report that write in the next get dirty log call.
*/
-unsigned long *host_bmap_track;
+static unsigned long *host_bmap_track;
-void generate_random_array(uint64_t *guest_array, uint64_t size)
+static void generate_random_array(uint64_t *guest_array, uint64_t size)
{
uint64_t i;
- for (i = 0; i < size; i++) {
+ for (i = 0; i < size; i++)
guest_array[i] = random();
- }
}
-void *vcpu_worker(void *data)
+static void *vcpu_worker(void *data)
{
int ret;
- uint64_t loops, *guest_array, pages_count = 0;
struct kvm_vm *vm = data;
+ uint64_t *guest_array;
+ uint64_t pages_count = 0;
struct kvm_run *run;
- struct guest_args args;
+ struct ucall uc;
run = vcpu_state(vm, VCPU_ID);
- /* Retrieve the guest random array pointer and cache it */
- guest_array = addr_gva2hva(vm, (vm_vaddr_t)guest_random_array);
-
- DEBUG("VCPU starts\n");
-
+ guest_array = addr_gva2hva(vm, (vm_vaddr_t)random_array);
generate_random_array(guest_array, TEST_PAGES_PER_LOOP);
while (!READ_ONCE(host_quit)) {
- /* Let the guest to dirty these random pages */
+ /* Let the guest dirty the random pages */
ret = _vcpu_run(vm, VCPU_ID);
- guest_args_read(vm, VCPU_ID, &args);
- if (run->exit_reason == KVM_EXIT_IO &&
- args.port == GUEST_PORT_SYNC) {
+ if (get_ucall(vm, VCPU_ID, &uc) == UCALL_SYNC) {
pages_count += TEST_PAGES_PER_LOOP;
generate_random_array(guest_array, TEST_PAGES_PER_LOOP);
} else {
}
}
- DEBUG("VCPU exits, dirtied %"PRIu64" pages\n", pages_count);
+ DEBUG("Dirtied %"PRIu64" pages\n", pages_count);
return NULL;
}
-void vm_dirty_log_verify(unsigned long *bmap, uint64_t iteration)
+static void vm_dirty_log_verify(unsigned long *bmap)
{
uint64_t page;
- uint64_t volatile *value_ptr;
+ uint64_t *value_ptr;
+ uint64_t step = host_page_size >= guest_page_size ? 1 :
+ guest_page_size / host_page_size;
- for (page = 0; page < TEST_MEM_PAGES; page++) {
- value_ptr = host_test_mem + page * getpagesize();
+ for (page = 0; page < host_num_pages; page += step) {
+ value_ptr = host_test_mem + page * host_page_size;
/* If this is a special page that we were tracking... */
if (test_and_clear_bit(page, host_bmap_track)) {
}
}
-void help(char *name)
+static struct kvm_vm *create_vm(enum vm_guest_mode mode, uint32_t vcpuid,
+ uint64_t extra_mem_pages, void *guest_code)
{
- puts("");
- printf("usage: %s [-i iterations] [-I interval] [-h]\n", name);
- puts("");
- printf(" -i: specify iteration counts (default: %"PRIu64")\n",
- TEST_HOST_LOOP_N);
- printf(" -I: specify interval in ms (default: %"PRIu64" ms)\n",
- TEST_HOST_LOOP_INTERVAL);
- puts("");
- exit(0);
+ struct kvm_vm *vm;
+ uint64_t extra_pg_pages = extra_mem_pages / 512 * 2;
+
+ vm = vm_create(mode, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
+ kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
+#ifdef __x86_64__
+ vm_create_irqchip(vm);
+#endif
+ vm_vcpu_add_default(vm, vcpuid, guest_code);
+ return vm;
}
-int main(int argc, char *argv[])
+static void run_test(enum vm_guest_mode mode, unsigned long iterations,
+ unsigned long interval, bool top_offset)
{
+ unsigned int guest_pa_bits, guest_page_shift;
pthread_t vcpu_thread;
struct kvm_vm *vm;
- uint64_t volatile *psize, *iteration;
- unsigned long *bmap, iterations = TEST_HOST_LOOP_N,
- interval = TEST_HOST_LOOP_INTERVAL;
- int opt;
-
- while ((opt = getopt(argc, argv, "hi:I:")) != -1) {
- switch (opt) {
- case 'i':
- iterations = strtol(optarg, NULL, 10);
- break;
- case 'I':
- interval = strtol(optarg, NULL, 10);
- break;
- case 'h':
- default:
- help(argv[0]);
- break;
- }
+ uint64_t max_gfn;
+ unsigned long *bmap;
+
+ switch (mode) {
+ case VM_MODE_P52V48_4K:
+ guest_pa_bits = 52;
+ guest_page_shift = 12;
+ break;
+ case VM_MODE_P52V48_64K:
+ guest_pa_bits = 52;
+ guest_page_shift = 16;
+ break;
+ case VM_MODE_P40V48_4K:
+ guest_pa_bits = 40;
+ guest_page_shift = 12;
+ break;
+ case VM_MODE_P40V48_64K:
+ guest_pa_bits = 40;
+ guest_page_shift = 16;
+ break;
+ default:
+ TEST_ASSERT(false, "Unknown guest mode, mode: 0x%x", mode);
}
- TEST_ASSERT(iterations > 2, "Iteration must be bigger than zero\n");
- TEST_ASSERT(interval > 0, "Interval must be bigger than zero");
+ DEBUG("Testing guest mode: %s\n", vm_guest_mode_string(mode));
- DEBUG("Test iterations: %"PRIu64", interval: %"PRIu64" (ms)\n",
- iterations, interval);
+ max_gfn = (1ul << (guest_pa_bits - guest_page_shift)) - 1;
+ guest_page_size = (1ul << guest_page_shift);
+ /* 1G of guest page sized pages */
+ guest_num_pages = (1ul << (30 - guest_page_shift));
+ host_page_size = getpagesize();
+ host_num_pages = (guest_num_pages * guest_page_size) / host_page_size +
+ !!((guest_num_pages * guest_page_size) % host_page_size);
- srandom(time(0));
+ if (top_offset) {
+ guest_test_mem = (max_gfn - guest_num_pages) * guest_page_size;
+ guest_test_mem &= ~(host_page_size - 1);
+ }
- bmap = bitmap_alloc(TEST_MEM_PAGES);
- host_bmap_track = bitmap_alloc(TEST_MEM_PAGES);
+ DEBUG("guest test mem offset: 0x%lx\n", guest_test_mem);
- vm = vm_create_default(VCPU_ID, TEST_MEM_PAGES, guest_code);
+ bmap = bitmap_alloc(host_num_pages);
+ host_bmap_track = bitmap_alloc(host_num_pages);
+
+ vm = create_vm(mode, VCPU_ID, guest_num_pages, guest_code);
/* Add an extra memory slot for testing dirty logging */
vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS,
- TEST_MEM_OFFSET,
+ guest_test_mem,
TEST_MEM_SLOT_INDEX,
- TEST_MEM_PAGES,
+ guest_num_pages,
KVM_MEM_LOG_DIRTY_PAGES);
- /* Cache the HVA pointer of the region */
- host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)TEST_MEM_OFFSET);
/* Do 1:1 mapping for the dirty track memory slot */
- virt_map(vm, TEST_MEM_OFFSET, TEST_MEM_OFFSET,
- TEST_MEM_PAGES * getpagesize(), 0);
+ virt_map(vm, guest_test_mem, guest_test_mem,
+ guest_num_pages * guest_page_size, 0);
+
+ /* Cache the HVA pointer of the region */
+ host_test_mem = addr_gpa2hva(vm, (vm_paddr_t)guest_test_mem);
+#ifdef __x86_64__
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
+#endif
+#ifdef __aarch64__
+ ucall_init(vm, UCALL_MMIO, NULL);
+#endif
- /* Tell the guest about the page size on the system */
- psize = addr_gva2hva(vm, (vm_vaddr_t)&guest_page_size);
- *psize = getpagesize();
+ /* Export the shared variables to the guest */
+ sync_global_to_guest(vm, host_page_size);
+ sync_global_to_guest(vm, guest_page_size);
+ sync_global_to_guest(vm, guest_test_mem);
+ sync_global_to_guest(vm, guest_num_pages);
/* Start the iterations */
- iteration = addr_gva2hva(vm, (vm_vaddr_t)&guest_iteration);
- *iteration = 1;
+ iteration = 1;
+ sync_global_to_guest(vm, iteration);
+ host_quit = false;
+ host_dirty_count = 0;
+ host_clear_count = 0;
+ host_track_next_count = 0;
- /* Start dirtying pages */
pthread_create(&vcpu_thread, NULL, vcpu_worker, vm);
- while (*iteration < iterations) {
+ while (iteration < iterations) {
/* Give the vcpu thread some time to dirty some pages */
usleep(interval * 1000);
kvm_vm_get_dirty_log(vm, TEST_MEM_SLOT_INDEX, bmap);
- vm_dirty_log_verify(bmap, *iteration);
- (*iteration)++;
+ vm_dirty_log_verify(bmap);
+ iteration++;
+ sync_global_to_guest(vm, iteration);
}
/* Tell the vcpu thread to quit */
free(bmap);
free(host_bmap_track);
+ ucall_uninit(vm);
kvm_vm_free(vm);
+}
+
+static struct vm_guest_modes {
+ enum vm_guest_mode mode;
+ bool supported;
+ bool enabled;
+} vm_guest_modes[NUM_VM_MODES] = {
+#if defined(__x86_64__)
+ { VM_MODE_P52V48_4K, 1, 1, },
+ { VM_MODE_P52V48_64K, 0, 0, },
+ { VM_MODE_P40V48_4K, 0, 0, },
+ { VM_MODE_P40V48_64K, 0, 0, },
+#elif defined(__aarch64__)
+ { VM_MODE_P52V48_4K, 0, 0, },
+ { VM_MODE_P52V48_64K, 0, 0, },
+ { VM_MODE_P40V48_4K, 1, 1, },
+ { VM_MODE_P40V48_64K, 1, 1, },
+#endif
+};
+
+static void help(char *name)
+{
+ int i;
+
+ puts("");
+ printf("usage: %s [-h] [-i iterations] [-I interval] "
+ "[-o offset] [-t] [-m mode]\n", name);
+ puts("");
+ printf(" -i: specify iteration counts (default: %"PRIu64")\n",
+ TEST_HOST_LOOP_N);
+ printf(" -I: specify interval in ms (default: %"PRIu64" ms)\n",
+ TEST_HOST_LOOP_INTERVAL);
+ printf(" -o: guest test memory offset (default: 0x%lx)\n",
+ DEFAULT_GUEST_TEST_MEM);
+ printf(" -t: map guest test memory at the top of the allowed "
+ "physical address range\n");
+ printf(" -m: specify the guest mode ID to test "
+ "(default: test all supported modes)\n"
+ " This option may be used multiple times.\n"
+ " Guest mode IDs:\n");
+ for (i = 0; i < NUM_VM_MODES; ++i) {
+ printf(" %d: %s%s\n",
+ vm_guest_modes[i].mode,
+ vm_guest_mode_string(vm_guest_modes[i].mode),
+ vm_guest_modes[i].supported ? " (supported)" : "");
+ }
+ puts("");
+ exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned long iterations = TEST_HOST_LOOP_N;
+ unsigned long interval = TEST_HOST_LOOP_INTERVAL;
+ bool mode_selected = false;
+ bool top_offset = false;
+ unsigned int mode;
+ int opt, i;
+
+ while ((opt = getopt(argc, argv, "hi:I:o:tm:")) != -1) {
+ switch (opt) {
+ case 'i':
+ iterations = strtol(optarg, NULL, 10);
+ break;
+ case 'I':
+ interval = strtol(optarg, NULL, 10);
+ break;
+ case 'o':
+ guest_test_mem = strtoull(optarg, NULL, 0);
+ break;
+ case 't':
+ top_offset = true;
+ break;
+ case 'm':
+ if (!mode_selected) {
+ for (i = 0; i < NUM_VM_MODES; ++i)
+ vm_guest_modes[i].enabled = 0;
+ mode_selected = true;
+ }
+ mode = strtoul(optarg, NULL, 10);
+ TEST_ASSERT(mode < NUM_VM_MODES,
+ "Guest mode ID %d too big", mode);
+ vm_guest_modes[mode].enabled = 1;
+ break;
+ case 'h':
+ default:
+ help(argv[0]);
+ break;
+ }
+ }
+
+ TEST_ASSERT(iterations > 2, "Iterations must be greater than two");
+ TEST_ASSERT(interval > 0, "Interval must be greater than zero");
+ TEST_ASSERT(!top_offset || guest_test_mem == DEFAULT_GUEST_TEST_MEM,
+ "Cannot use both -o [offset] and -t at the same time");
+
+ DEBUG("Test iterations: %"PRIu64", interval: %"PRIu64" (ms)\n",
+ iterations, interval);
+
+ srandom(time(0));
+
+ for (i = 0; i < NUM_VM_MODES; ++i) {
+ if (!vm_guest_modes[i].enabled)
+ continue;
+ TEST_ASSERT(vm_guest_modes[i].supported,
+ "Guest mode ID %d (%s) not supported.",
+ vm_guest_modes[i].mode,
+ vm_guest_mode_string(vm_guest_modes[i].mode));
+ run_test(vm_guest_modes[i].mode, iterations, interval, top_offset);
+ }
return 0;
}
#include <sys/stat.h>
#include <linux/kernel.h>
-#define KVM_DEV_PATH "/dev/kvm"
-
#define KVM_UTIL_PGS_PER_HUGEPG 512
-#define KVM_UTIL_MIN_PADDR 0x2000
+#define KVM_UTIL_MIN_PFN 2
/* Aligns x up to the next multiple of size. Size must be a power of 2. */
static void *align(void *x, size_t size)
return (void *) (((size_t) x + mask) & ~mask);
}
-/* Capability
+/*
+ * Capability
*
* Input Args:
* cap - Capability
if (vm->kvm_fd < 0)
exit(KSFT_SKIP);
- /* Create VM. */
vm->fd = ioctl(vm->kvm_fd, KVM_CREATE_VM, NULL);
TEST_ASSERT(vm->fd >= 0, "KVM_CREATE_VM ioctl failed, "
"rc: %i errno: %i", vm->fd, errno);
}
-/* VM Create
+const char * const vm_guest_mode_string[] = {
+ "PA-bits:52, VA-bits:48, 4K pages",
+ "PA-bits:52, VA-bits:48, 64K pages",
+ "PA-bits:40, VA-bits:48, 4K pages",
+ "PA-bits:40, VA-bits:48, 64K pages",
+};
+
+/*
+ * VM Create
*
* Input Args:
- * mode - VM Mode (e.g. VM_MODE_FLAT48PG)
+ * mode - VM Mode (e.g. VM_MODE_P52V48_4K)
* phy_pages - Physical memory pages
* perm - permission
*
* Return:
* Pointer to opaque structure that describes the created VM.
*
- * Creates a VM with the mode specified by mode (e.g. VM_MODE_FLAT48PG).
+ * Creates a VM with the mode specified by mode (e.g. VM_MODE_P52V48_4K).
* When phy_pages is non-zero, a memory region of phy_pages physical pages
* is created and mapped starting at guest physical address 0. The file
* descriptor to control the created VM is created with the permissions
struct kvm_vm *vm;
int kvm_fd;
- /* Allocate memory. */
vm = calloc(1, sizeof(*vm));
- TEST_ASSERT(vm != NULL, "Insufficent Memory");
+ TEST_ASSERT(vm != NULL, "Insufficient Memory");
vm->mode = mode;
vm_open(vm, perm);
/* Setup mode specific traits. */
switch (vm->mode) {
- case VM_MODE_FLAT48PG:
+ case VM_MODE_P52V48_4K:
+ vm->pgtable_levels = 4;
vm->page_size = 0x1000;
vm->page_shift = 12;
-
- /* Limit to 48-bit canonical virtual addresses. */
- vm->vpages_valid = sparsebit_alloc();
- sparsebit_set_num(vm->vpages_valid,
- 0, (1ULL << (48 - 1)) >> vm->page_shift);
- sparsebit_set_num(vm->vpages_valid,
- (~((1ULL << (48 - 1)) - 1)) >> vm->page_shift,
- (1ULL << (48 - 1)) >> vm->page_shift);
-
- /* Limit physical addresses to 52-bits. */
- vm->max_gfn = ((1ULL << 52) >> vm->page_shift) - 1;
+ vm->va_bits = 48;
+ break;
+ case VM_MODE_P52V48_64K:
+ vm->pgtable_levels = 3;
+ vm->pa_bits = 52;
+ vm->page_size = 0x10000;
+ vm->page_shift = 16;
+ vm->va_bits = 48;
+ break;
+ case VM_MODE_P40V48_4K:
+ vm->pgtable_levels = 4;
+ vm->pa_bits = 40;
+ vm->va_bits = 48;
+ vm->page_size = 0x1000;
+ vm->page_shift = 12;
+ break;
+ case VM_MODE_P40V48_64K:
+ vm->pgtable_levels = 3;
+ vm->pa_bits = 40;
+ vm->va_bits = 48;
+ vm->page_size = 0x10000;
+ vm->page_shift = 16;
break;
-
default:
TEST_ASSERT(false, "Unknown guest mode, mode: 0x%x", mode);
}
+ /* Limit to VA-bit canonical virtual addresses. */
+ vm->vpages_valid = sparsebit_alloc();
+ sparsebit_set_num(vm->vpages_valid,
+ 0, (1ULL << (vm->va_bits - 1)) >> vm->page_shift);
+ sparsebit_set_num(vm->vpages_valid,
+ (~((1ULL << (vm->va_bits - 1)) - 1)) >> vm->page_shift,
+ (1ULL << (vm->va_bits - 1)) >> vm->page_shift);
+
+ /* Limit physical addresses to PA-bits. */
+ vm->max_gfn = ((1ULL << vm->pa_bits) >> vm->page_shift) - 1;
+
/* Allocate and setup memory for guest. */
vm->vpages_mapped = sparsebit_alloc();
if (phy_pages != 0)
return vm;
}
-/* VM Restart
+/*
+ * VM Restart
*
* Input Args:
* vm - VM that has been released before
" rc: %i errno: %i\n"
" slot: %u flags: 0x%x\n"
" guest_phys_addr: 0x%lx size: 0x%lx",
- ret, errno, region->region.slot, region->region.flags,
+ ret, errno, region->region.slot,
+ region->region.flags,
region->region.guest_phys_addr,
region->region.memory_size);
}
strerror(-ret));
}
-/* Userspace Memory Region Find
+/*
+ * Userspace Memory Region Find
*
* Input Args:
* vm - Virtual Machine
* of the regions is returned. Null is returned only when no overlapping
* region exists.
*/
-static struct userspace_mem_region *userspace_mem_region_find(
- struct kvm_vm *vm, uint64_t start, uint64_t end)
+static struct userspace_mem_region *
+userspace_mem_region_find(struct kvm_vm *vm, uint64_t start, uint64_t end)
{
struct userspace_mem_region *region;
return NULL;
}
-/* KVM Userspace Memory Region Find
+/*
+ * KVM Userspace Memory Region Find
*
* Input Args:
* vm - Virtual Machine
return ®ion->region;
}
-/* VCPU Find
+/*
+ * VCPU Find
*
* Input Args:
* vm - Virtual Machine
* returns a pointer to it. Returns NULL if the VM doesn't contain a VCPU
* for the specified vcpuid.
*/
-struct vcpu *vcpu_find(struct kvm_vm *vm,
- uint32_t vcpuid)
+struct vcpu *vcpu_find(struct kvm_vm *vm, uint32_t vcpuid)
{
struct vcpu *vcpup;
return NULL;
}
-/* VM VCPU Remove
+/*
+ * VM VCPU Remove
*
* Input Args:
* vm - Virtual Machine
{
int ret;
- /* Free VCPUs. */
while (vmp->vcpu_head)
vm_vcpu_rm(vmp, vmp->vcpu_head->id);
- /* Close file descriptor for the VM. */
ret = close(vmp->fd);
TEST_ASSERT(ret == 0, "Close of vm fd failed,\n"
" vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno);
" vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno);
}
-/* Destroys and frees the VM pointed to by vmp.
+/*
+ * Destroys and frees the VM pointed to by vmp.
*/
void kvm_vm_free(struct kvm_vm *vmp)
{
free(vmp);
}
-/* Memory Compare, host virtual to guest virtual
+/*
+ * Memory Compare, host virtual to guest virtual
*
* Input Args:
* hva - Starting host virtual address
* a length of len, to the guest bytes starting at the guest virtual
* address given by gva.
*/
-int kvm_memcmp_hva_gva(void *hva,
- struct kvm_vm *vm, vm_vaddr_t gva, size_t len)
+int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, vm_vaddr_t gva, size_t len)
{
size_t amt;
- /* Compare a batch of bytes until either a match is found
+ /*
+ * Compare a batch of bytes until either a match is found
* or all the bytes have been compared.
*/
for (uintptr_t offset = 0; offset < len; offset += amt) {
uintptr_t ptr1 = (uintptr_t)hva + offset;
- /* Determine host address for guest virtual address
+ /*
+ * Determine host address for guest virtual address
* at offset.
*/
uintptr_t ptr2 = (uintptr_t)addr_gva2hva(vm, gva + offset);
- /* Determine amount to compare on this pass.
+ /*
+ * Determine amount to compare on this pass.
* Don't allow the comparsion to cross a page boundary.
*/
amt = len - offset;
assert((ptr1 >> vm->page_shift) == ((ptr1 + amt - 1) >> vm->page_shift));
assert((ptr2 >> vm->page_shift) == ((ptr2 + amt - 1) >> vm->page_shift));
- /* Perform the comparison. If there is a difference
+ /*
+ * Perform the comparison. If there is a difference
* return that result to the caller, otherwise need
* to continue on looking for a mismatch.
*/
return ret;
}
- /* No mismatch found. Let the caller know the two memory
+ /*
+ * No mismatch found. Let the caller know the two memory
* areas are equal.
*/
return 0;
}
-/* Allocate an instance of struct kvm_cpuid2
- *
- * Input Args: None
- *
- * Output Args: None
- *
- * Return: A pointer to the allocated struct. The caller is responsible
- * for freeing this struct.
- *
- * Since kvm_cpuid2 uses a 0-length array to allow a the size of the
- * array to be decided at allocation time, allocation is slightly
- * complicated. This function uses a reasonable default length for
- * the array and performs the appropriate allocation.
- */
-static struct kvm_cpuid2 *allocate_kvm_cpuid2(void)
-{
- struct kvm_cpuid2 *cpuid;
- int nent = 100;
- size_t size;
-
- size = sizeof(*cpuid);
- size += nent * sizeof(struct kvm_cpuid_entry2);
- cpuid = malloc(size);
- if (!cpuid) {
- perror("malloc");
- abort();
- }
-
- cpuid->nent = nent;
-
- return cpuid;
-}
-
-/* KVM Supported CPUID Get
- *
- * Input Args: None
- *
- * Output Args:
- *
- * Return: The supported KVM CPUID
- *
- * Get the guest CPUID supported by KVM.
- */
-struct kvm_cpuid2 *kvm_get_supported_cpuid(void)
-{
- static struct kvm_cpuid2 *cpuid;
- int ret;
- int kvm_fd;
-
- if (cpuid)
- return cpuid;
-
- cpuid = allocate_kvm_cpuid2();
- kvm_fd = open(KVM_DEV_PATH, O_RDONLY);
- if (kvm_fd < 0)
- exit(KSFT_SKIP);
-
- ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_CPUID, cpuid);
- TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_CPUID failed %d %d\n",
- ret, errno);
-
- close(kvm_fd);
- return cpuid;
-}
-
-/* Locate a cpuid entry.
- *
- * Input Args:
- * cpuid: The cpuid.
- * function: The function of the cpuid entry to find.
- *
- * Output Args: None
- *
- * Return: A pointer to the cpuid entry. Never returns NULL.
- */
-struct kvm_cpuid_entry2 *
-kvm_get_supported_cpuid_index(uint32_t function, uint32_t index)
-{
- struct kvm_cpuid2 *cpuid;
- struct kvm_cpuid_entry2 *entry = NULL;
- int i;
-
- cpuid = kvm_get_supported_cpuid();
- for (i = 0; i < cpuid->nent; i++) {
- if (cpuid->entries[i].function == function &&
- cpuid->entries[i].index == index) {
- entry = &cpuid->entries[i];
- break;
- }
- }
-
- TEST_ASSERT(entry, "Guest CPUID entry not found: (EAX=%x, ECX=%x).",
- function, index);
- return entry;
-}
-
-/* VM Userspace Memory Region Add
+/*
+ * VM Userspace Memory Region Add
*
* Input Args:
* vm - Virtual Machine
" vm->max_gfn: 0x%lx vm->page_size: 0x%x",
guest_paddr, npages, vm->max_gfn, vm->page_size);
- /* Confirm a mem region with an overlapping address doesn't
+ /*
+ * Confirm a mem region with an overlapping address doesn't
* already exist.
*/
region = (struct userspace_mem_region *) userspace_mem_region_find(
vm->userspace_mem_region_head = region;
}
-/* Memslot to region
+/*
+ * Memslot to region
*
* Input Args:
* vm - Virtual Machine
* on error (e.g. currently no memory region using memslot as a KVM
* memory slot ID).
*/
-static struct userspace_mem_region *memslot2region(struct kvm_vm *vm,
- uint32_t memslot)
+static struct userspace_mem_region *
+memslot2region(struct kvm_vm *vm, uint32_t memslot)
{
struct userspace_mem_region *region;
return region;
}
-/* VM Memory Region Flags Set
+/*
+ * VM Memory Region Flags Set
*
* Input Args:
* vm - Virtual Machine
int ret;
struct userspace_mem_region *region;
- /* Locate memory region. */
region = memslot2region(vm, slot);
region->region.flags = flags;
ret, errno, slot, flags);
}
-/* VCPU mmap Size
+/*
+ * VCPU mmap Size
*
* Input Args: None
*
return ret;
}
-/* VM VCPU Add
+/*
+ * VM VCPU Add
*
* Input Args:
* vm - Virtual Machine
* Creates and adds to the VM specified by vm and virtual CPU with
* the ID given by vcpuid.
*/
-void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_memslot)
+void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot,
+ int gdt_memslot)
{
struct vcpu *vcpu;
vcpu_setup(vm, vcpuid, pgd_memslot, gdt_memslot);
}
-/* VM Virtual Address Unused Gap
+/*
+ * VM Virtual Address Unused Gap
*
* Input Args:
* vm - Virtual Machine
* sz unallocated bytes >= vaddr_min is available.
*/
static vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz,
- vm_vaddr_t vaddr_min)
+ vm_vaddr_t vaddr_min)
{
uint64_t pages = (sz + vm->page_size - 1) >> vm->page_shift;
/* Determine lowest permitted virtual page index. */
uint64_t pgidx_start = (vaddr_min + vm->page_size - 1) >> vm->page_shift;
if ((pgidx_start * vm->page_size) < vaddr_min)
- goto no_va_found;
+ goto no_va_found;
/* Loop over section with enough valid virtual page indexes. */
if (!sparsebit_is_set_num(vm->vpages_valid,
return pgidx_start * vm->page_size;
}
-/* VM Virtual Address Allocate
+/*
+ * VM Virtual Address Allocate
*
* Input Args:
* vm - Virtual Machine
* a page.
*/
vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min,
- uint32_t data_memslot, uint32_t pgd_memslot)
+ uint32_t data_memslot, uint32_t pgd_memslot)
{
uint64_t pages = (sz >> vm->page_shift) + ((sz % vm->page_size) != 0);
virt_pgd_alloc(vm, pgd_memslot);
- /* Find an unused range of virtual page addresses of at least
+ /*
+ * Find an unused range of virtual page addresses of at least
* pages in length.
*/
vm_vaddr_t vaddr_start = vm_vaddr_unused_gap(vm, sz, vaddr_min);
pages--, vaddr += vm->page_size) {
vm_paddr_t paddr;
- paddr = vm_phy_page_alloc(vm, KVM_UTIL_MIN_PADDR, data_memslot);
+ paddr = vm_phy_page_alloc(vm,
+ KVM_UTIL_MIN_PFN * vm->page_size, data_memslot);
virt_pg_map(vm, vaddr, paddr, pgd_memslot);
}
}
-/* Address VM Physical to Host Virtual
+/*
+ * Address VM Physical to Host Virtual
*
* Input Args:
* vm - Virtual Machine
return NULL;
}
-/* Address Host Virtual to VM Physical
+/*
+ * Address Host Virtual to VM Physical
*
* Input Args:
* vm - Virtual Machine
return -1;
}
-/* VM Create IRQ Chip
+/*
+ * VM Create IRQ Chip
*
* Input Args:
* vm - Virtual Machine
vm->has_irqchip = true;
}
-/* VM VCPU State
+/*
+ * VM VCPU State
*
* Input Args:
* vm - Virtual Machine
return vcpu->state;
}
-/* VM VCPU Run
+/*
+ * VM VCPU Run
*
* Input Args:
* vm - Virtual Machine
int rc;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- do {
+ do {
rc = ioctl(vcpu->fd, KVM_RUN, NULL);
} while (rc == -1 && errno == EINTR);
return rc;
}
-/* VM VCPU Set MP State
+/*
+ * VM VCPU Set MP State
*
* Input Args:
* vm - Virtual Machine
* by mp_state.
*/
void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid,
- struct kvm_mp_state *mp_state)
+ struct kvm_mp_state *mp_state)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
"rc: %i errno: %i", ret, errno);
}
-/* VM VCPU Regs Get
+/*
+ * VM VCPU Regs Get
*
* Input Args:
* vm - Virtual Machine
* Obtains the current register state for the VCPU specified by vcpuid
* and stores it at the location given by regs.
*/
-void vcpu_regs_get(struct kvm_vm *vm,
- uint32_t vcpuid, struct kvm_regs *regs)
+void vcpu_regs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Get the regs. */
ret = ioctl(vcpu->fd, KVM_GET_REGS, regs);
TEST_ASSERT(ret == 0, "KVM_GET_REGS failed, rc: %i errno: %i",
ret, errno);
}
-/* VM VCPU Regs Set
+/*
+ * VM VCPU Regs Set
*
* Input Args:
* vm - Virtual Machine
* Sets the regs of the VCPU specified by vcpuid to the values
* given by regs.
*/
-void vcpu_regs_set(struct kvm_vm *vm,
- uint32_t vcpuid, struct kvm_regs *regs)
+void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Set the regs. */
ret = ioctl(vcpu->fd, KVM_SET_REGS, regs);
TEST_ASSERT(ret == 0, "KVM_SET_REGS failed, rc: %i errno: %i",
ret, errno);
}
void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid,
- struct kvm_vcpu_events *events)
+ struct kvm_vcpu_events *events)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Get the regs. */
ret = ioctl(vcpu->fd, KVM_GET_VCPU_EVENTS, events);
TEST_ASSERT(ret == 0, "KVM_GET_VCPU_EVENTS, failed, rc: %i errno: %i",
ret, errno);
}
void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
- struct kvm_vcpu_events *events)
+ struct kvm_vcpu_events *events)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Set the regs. */
ret = ioctl(vcpu->fd, KVM_SET_VCPU_EVENTS, events);
TEST_ASSERT(ret == 0, "KVM_SET_VCPU_EVENTS, failed, rc: %i errno: %i",
ret, errno);
}
-/* VCPU Get MSR
- *
- * Input Args:
- * vm - Virtual Machine
- * vcpuid - VCPU ID
- * msr_index - Index of MSR
- *
- * Output Args: None
- *
- * Return: On success, value of the MSR. On failure a TEST_ASSERT is produced.
- *
- * Get value of MSR for VCPU.
- */
-uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index)
-{
- struct vcpu *vcpu = vcpu_find(vm, vcpuid);
- struct {
- struct kvm_msrs header;
- struct kvm_msr_entry entry;
- } buffer = {};
- int r;
-
- TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- buffer.header.nmsrs = 1;
- buffer.entry.index = msr_index;
- r = ioctl(vcpu->fd, KVM_GET_MSRS, &buffer.header);
- TEST_ASSERT(r == 1, "KVM_GET_MSRS IOCTL failed,\n"
- " rc: %i errno: %i", r, errno);
-
- return buffer.entry.data;
-}
-
-/* VCPU Set MSR
- *
- * Input Args:
- * vm - Virtual Machine
- * vcpuid - VCPU ID
- * msr_index - Index of MSR
- * msr_value - New value of MSR
- *
- * Output Args: None
- *
- * Return: On success, nothing. On failure a TEST_ASSERT is produced.
- *
- * Set value of MSR for VCPU.
- */
-void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index,
- uint64_t msr_value)
-{
- struct vcpu *vcpu = vcpu_find(vm, vcpuid);
- struct {
- struct kvm_msrs header;
- struct kvm_msr_entry entry;
- } buffer = {};
- int r;
-
- TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- memset(&buffer, 0, sizeof(buffer));
- buffer.header.nmsrs = 1;
- buffer.entry.index = msr_index;
- buffer.entry.data = msr_value;
- r = ioctl(vcpu->fd, KVM_SET_MSRS, &buffer.header);
- TEST_ASSERT(r == 1, "KVM_SET_MSRS IOCTL failed,\n"
- " rc: %i errno: %i", r, errno);
-}
-
-/* VM VCPU Args Set
- *
- * Input Args:
- * vm - Virtual Machine
- * vcpuid - VCPU ID
- * num - number of arguments
- * ... - arguments, each of type uint64_t
- *
- * Output Args: None
- *
- * Return: None
- *
- * Sets the first num function input arguments to the values
- * given as variable args. Each of the variable args is expected to
- * be of type uint64_t.
- */
-void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...)
-{
- va_list ap;
- struct kvm_regs regs;
-
- TEST_ASSERT(num >= 1 && num <= 6, "Unsupported number of args,\n"
- " num: %u\n",
- num);
-
- va_start(ap, num);
- vcpu_regs_get(vm, vcpuid, ®s);
-
- if (num >= 1)
- regs.rdi = va_arg(ap, uint64_t);
-
- if (num >= 2)
- regs.rsi = va_arg(ap, uint64_t);
-
- if (num >= 3)
- regs.rdx = va_arg(ap, uint64_t);
-
- if (num >= 4)
- regs.rcx = va_arg(ap, uint64_t);
-
- if (num >= 5)
- regs.r8 = va_arg(ap, uint64_t);
-
- if (num >= 6)
- regs.r9 = va_arg(ap, uint64_t);
-
- vcpu_regs_set(vm, vcpuid, ®s);
- va_end(ap);
-}
-
-/* VM VCPU System Regs Get
+/*
+ * VM VCPU System Regs Get
*
* Input Args:
* vm - Virtual Machine
* Obtains the current system register state for the VCPU specified by
* vcpuid and stores it at the location given by sregs.
*/
-void vcpu_sregs_get(struct kvm_vm *vm,
- uint32_t vcpuid, struct kvm_sregs *sregs)
+void vcpu_sregs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Get the regs. */
- /* Get the regs. */
ret = ioctl(vcpu->fd, KVM_GET_SREGS, sregs);
TEST_ASSERT(ret == 0, "KVM_GET_SREGS failed, rc: %i errno: %i",
ret, errno);
}
-/* VM VCPU System Regs Set
+/*
+ * VM VCPU System Regs Set
*
* Input Args:
* vm - Virtual Machine
* Sets the system regs of the VCPU specified by vcpuid to the values
* given by sregs.
*/
-void vcpu_sregs_set(struct kvm_vm *vm,
- uint32_t vcpuid, struct kvm_sregs *sregs)
+void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs)
{
int ret = _vcpu_sregs_set(vm, vcpuid, sregs);
TEST_ASSERT(ret == 0, "KVM_RUN IOCTL failed, "
"rc: %i errno: %i", ret, errno);
}
-int _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)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid);
- /* Get the regs. */
return ioctl(vcpu->fd, KVM_SET_SREGS, sregs);
}
-/* VCPU Ioctl
+/*
+ * VCPU Ioctl
*
* Input Args:
* vm - Virtual Machine
*
* Issues an arbitrary ioctl on a VCPU fd.
*/
-void vcpu_ioctl(struct kvm_vm *vm,
- uint32_t vcpuid, unsigned long cmd, void *arg)
+void vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid,
+ unsigned long cmd, void *arg)
{
struct vcpu *vcpu = vcpu_find(vm, vcpuid);
int ret;
cmd, ret, errno, strerror(errno));
}
-/* VM Ioctl
+/*
+ * VM Ioctl
*
* Input Args:
* vm - Virtual Machine
cmd, ret, errno, strerror(errno));
}
-/* VM Dump
+/*
+ * VM Dump
*
* Input Args:
* vm - Virtual Machine
vcpu_dump(stream, vm, vcpu->id, indent + 2);
}
-/* VM VCPU Dump
- *
- * Input Args:
- * vm - Virtual Machine
- * vcpuid - VCPU ID
- * indent - Left margin indent amount
- *
- * Output Args:
- * stream - Output FILE stream
- *
- * Return: None
- *
- * Dumps the current state of the VCPU specified by vcpuid, within the VM
- * given by vm, to the FILE stream given by stream.
- */
-void vcpu_dump(FILE *stream, struct kvm_vm *vm,
- uint32_t vcpuid, uint8_t indent)
-{
- struct kvm_regs regs;
- struct kvm_sregs sregs;
-
- fprintf(stream, "%*scpuid: %u\n", indent, "", vcpuid);
-
- fprintf(stream, "%*sregs:\n", indent + 2, "");
- vcpu_regs_get(vm, vcpuid, ®s);
- regs_dump(stream, ®s, indent + 4);
-
- fprintf(stream, "%*ssregs:\n", indent + 2, "");
- vcpu_sregs_get(vm, vcpuid, &sregs);
- sregs_dump(stream, &sregs, indent + 4);
-}
-
/* Known KVM exit reasons */
static struct exit_reason {
unsigned int reason;
#endif
};
-/* Exit Reason String
+/*
+ * Exit Reason String
*
* Input Args:
* exit_reason - Exit reason
return "Unknown";
}
-/* Physical Page Allocate
+/*
+ * Physical Contiguous Page Allocator
*
* Input Args:
* vm - Virtual Machine
+ * num - number of pages
* paddr_min - Physical address minimum
* memslot - Memory region to allocate page from
*
* Return:
* Starting physical address
*
- * Within the VM specified by vm, locates an available physical page
- * at or above paddr_min. If found, the page is marked as in use
- * and its address is returned. A TEST_ASSERT failure occurs if no
- * page is available at or above paddr_min.
+ * Within the VM specified by vm, locates a range of available physical
+ * pages at or above paddr_min. If found, the pages are marked as in use
+ * and thier base address is returned. A TEST_ASSERT failure occurs if
+ * not enough pages are available at or above paddr_min.
*/
-vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm,
- vm_paddr_t paddr_min, uint32_t memslot)
+vm_paddr_t vm_phy_pages_alloc(struct kvm_vm *vm, size_t num,
+ vm_paddr_t paddr_min, uint32_t memslot)
{
struct userspace_mem_region *region;
- sparsebit_idx_t pg;
+ sparsebit_idx_t pg, base;
+
+ TEST_ASSERT(num > 0, "Must allocate at least one page");
TEST_ASSERT((paddr_min % vm->page_size) == 0, "Min physical address "
"not divisible by page size.\n"
" paddr_min: 0x%lx page_size: 0x%x",
paddr_min, vm->page_size);
- /* Locate memory region. */
region = memslot2region(vm, memslot);
+ base = pg = paddr_min >> vm->page_shift;
- /* Locate next available physical page at or above paddr_min. */
- pg = paddr_min >> vm->page_shift;
-
- if (!sparsebit_is_set(region->unused_phy_pages, pg)) {
- pg = sparsebit_next_set(region->unused_phy_pages, pg);
- if (pg == 0) {
- fprintf(stderr, "No guest physical page available, "
- "paddr_min: 0x%lx page_size: 0x%x memslot: %u",
- paddr_min, vm->page_size, memslot);
- fputs("---- vm dump ----\n", stderr);
- vm_dump(stderr, vm, 2);
- abort();
+ do {
+ for (; pg < base + num; ++pg) {
+ if (!sparsebit_is_set(region->unused_phy_pages, pg)) {
+ base = pg = sparsebit_next_set(region->unused_phy_pages, pg);
+ break;
+ }
}
+ } while (pg && pg != base + num);
+
+ if (pg == 0) {
+ fprintf(stderr, "No guest physical page available, "
+ "paddr_min: 0x%lx page_size: 0x%x memslot: %u\n",
+ paddr_min, vm->page_size, memslot);
+ fputs("---- vm dump ----\n", stderr);
+ vm_dump(stderr, vm, 2);
+ abort();
}
- /* Specify page as in use and return its address. */
- sparsebit_clear(region->unused_phy_pages, pg);
+ for (pg = base; pg < base + num; ++pg)
+ sparsebit_clear(region->unused_phy_pages, pg);
+
+ return base * vm->page_size;
+}
- return pg * vm->page_size;
+vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min,
+ uint32_t memslot)
+{
+ return vm_phy_pages_alloc(vm, 1, paddr_min, memslot);
}
-/* Address Guest Virtual to Host Virtual
+/*
+ * Address Guest Virtual to Host Virtual
*
* Input Args:
* vm - Virtual Machine
{
return addr_gpa2hva(vm, addr_gva2gpa(vm, gva));
}
-
-void guest_args_read(struct kvm_vm *vm, uint32_t vcpu_id,
- struct guest_args *args)
-{
- struct kvm_run *run = vcpu_state(vm, vcpu_id);
- struct kvm_regs regs;
-
- memset(®s, 0, sizeof(regs));
- vcpu_regs_get(vm, vcpu_id, ®s);
-
- args->port = run->io.port;
- args->arg0 = regs.rdi;
- args->arg1 = regs.rsi;
-}
projects / mirror_ubuntu-eoan-kernel.git / commitdiff