diff options
Diffstat (limited to 'test/kvm.c')
| -rw-r--r-- | test/kvm.c | 29 |
1 files changed, 15 insertions, 14 deletions
@@ -49,7 +49,7 @@ extern uint8_t __stop_guest_without[]; static struct kvm kvm; static struct kvm_run *kvm_run; -static int cachepc_fd; +static int kvm_fd; #define TARGET_CACHE_LINESIZE 64 #define TARGET_SET 15 @@ -189,14 +189,15 @@ kvm_init(size_t ramsize, void *code_start, void *code_stop) } uint16_t * -read_counts() +read_counts() { - uint16_t *counts = (uint16_t *)malloc(64*sizeof(uint16_t)); - size_t len; + uint16_t *counts; + int ret; - lseek(cachepc_fd, 0, SEEK_SET); - len = read(cachepc_fd, counts, 64 * sizeof(uint16_t)); - assert(len == 64 * sizeof(uint16_t)); + counts = malloc(64 * sizeof(uint16_t)); + if (!counts) err(1, "malloc"); + ret = ioctl(kvm_fd, KVM_CPC_READ_COUNTS, counts); + if (ret == -1) err(1, "ioctl READ_COUNTS"); return counts; } @@ -272,16 +273,16 @@ main(int argc, const char **argv) pin_process(0, TARGET_CORE, true); - cachepc_fd = open("/proc/cachepc", O_RDONLY); - if (cachepc_fd < 0) err(1, "open"); + kvm_fd = open("/dev/kvm", O_RDONLY); + if (kvm_fd < 0) err(1, "open"); - /* init L1 miss counter */ + /* init L1 miss counter for host kernel */ arg = 0x002264D8; - ret = ioctl(cachepc_fd, CACHEPC_IOCTL_INIT_PMC, &arg); - if (ret == -1) err(1, "ioctl fail"); + ret = ioctl(kvm_fd, KVM_CPC_INIT_PMC, &arg); + if (ret == -1) err(1, "ioctl INIT_PMC"); baseline = calloc(sizeof(uint16_t), 64); - if (!baseline) err(1, "counts"); + if (!baseline) err(1, "calloc"); for (k = 0; k < 64; k++) baseline[k] = UINT16_MAX; @@ -319,6 +320,6 @@ main(int argc, const char **argv) } free(baseline); - close(cachepc_fd); + close(kvm_fd); } |