From 34ff636f322c6d5e4f0a52338fa63a7dff09a495 Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Sat, 18 Jul 2026 13:15:36 -0400 Subject: scftorture: Count single_rpc offline failures in statistics output scf_torture_stats_print() aggregates each invoker thread's counters into a local scf_statistics structure before printing, but the n_single_rpc_ofl field is missing from the aggregation loop. As a result, the "single_rpc_ofl" value printed in the statistics line is always zero, even when smp_call_function_single() invocations for the RPC test have failed due to offline CPUs and been counted by the invoker threads. Add the missing accumulation so that the printed value reflects the actual counts. Signed-off-by: Joel Fernandes Signed-off-by: Paul E. McKenney --- samples/acrn/Makefile | 12 +++++ samples/acrn/guest.ld | 9 ++++ samples/acrn/payload.ld | 9 ++++ samples/acrn/vm-sample.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 162 insertions(+) create mode 100644 samples/acrn/Makefile create mode 100644 samples/acrn/guest.ld create mode 100644 samples/acrn/payload.ld create mode 100644 samples/acrn/vm-sample.c (limited to 'samples/acrn') diff --git a/samples/acrn/Makefile b/samples/acrn/Makefile new file mode 100644 index 000000000..c8e3ed978 --- /dev/null +++ b/samples/acrn/Makefile @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0 + +.PHONY: vm-sample + +vm-sample: vm-sample.o payload.o + $(CC) $^ -o $@ + +payload.o: payload.ld guest16.o + $(LD) -T $< -o $@ + +clean: + rm *.o vm-sample diff --git a/samples/acrn/guest.ld b/samples/acrn/guest.ld new file mode 100644 index 000000000..5127c682b --- /dev/null +++ b/samples/acrn/guest.ld @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +OUTPUT_FORMAT(binary) +SECTIONS +{ + .start : { *(.start) } + .text : { *(.text*) } + .rodata : { *(.rodata) } + .data : { *(.data) } +} diff --git a/samples/acrn/payload.ld b/samples/acrn/payload.ld new file mode 100644 index 000000000..e8d9a498a --- /dev/null +++ b/samples/acrn/payload.ld @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +SECTIONS +{ + .payload16 0 : { + guest16 = .; + guest16.o(.text) + guest16_end = .; + } +} diff --git a/samples/acrn/vm-sample.c b/samples/acrn/vm-sample.c new file mode 100644 index 000000000..c61e0f914 --- /dev/null +++ b/samples/acrn/vm-sample.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * A sample program to run a User VM on the ACRN hypervisor + * + * This sample runs in a Service VM, which is a privileged VM of ACRN. + * CONFIG_ACRN_HSM needs to be enabled in the Service VM. + * + * Guest VM code in guest16.s will be executed after the VM launched. + * + * Copyright (C) 2020 Intel Corporation. All rights reserved. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define GUEST_MEMORY_SIZE (1024*1024) +void *guest_memory; + +extern const unsigned char guest16[], guest16_end[]; +static char io_request_page[4096] __attribute__((aligned(4096))); +static struct acrn_io_request *io_req_buf = (struct acrn_io_request *)io_request_page; + +__u16 vcpu_num; +__u16 vmid; + +int hsm_fd; +int is_running = 1; + +void vm_exit(int sig) +{ + sig = sig; + + is_running = 0; + ioctl(hsm_fd, ACRN_IOCTL_PAUSE_VM, vmid); + ioctl(hsm_fd, ACRN_IOCTL_DESTROY_IOREQ_CLIENT, 0); +} + +int main(int argc, char **argv) +{ + int vcpu_id, ret; + struct acrn_vm_creation create_vm = {0}; + struct acrn_vm_memmap ram_map = {0}; + struct acrn_vcpu_regs regs; + struct acrn_io_request *io_req; + struct acrn_ioreq_notify __attribute__((aligned(8))) notify; + + argc = argc; + argv = argv; + + ret = posix_memalign(&guest_memory, 4096, GUEST_MEMORY_SIZE); + if (ret < 0) { + printf("Not enough memory!\n"); + return -1; + } + hsm_fd = open("/dev/acrn_hsm", O_RDWR|O_CLOEXEC); + + create_vm.ioreq_buf = (__u64)io_req_buf; + ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_VM, &create_vm); + printf("Created VM! [%d]\n", ret); + vcpu_num = create_vm.vcpu_num; + vmid = create_vm.vmid; + + /* setup guest memory */ + ram_map.type = ACRN_MEMMAP_RAM; + ram_map.vma_base = (__u64)guest_memory; + ram_map.len = GUEST_MEMORY_SIZE; + ram_map.user_vm_pa = 0; + ram_map.attr = ACRN_MEM_ACCESS_RWX; + ret = ioctl(hsm_fd, ACRN_IOCTL_SET_MEMSEG, &ram_map); + printf("Set up VM memory! [%d]\n", ret); + + memcpy(guest_memory, guest16, guest16_end-guest16); + + /* setup vcpu registers */ + memset(®s, 0, sizeof(regs)); + regs.vcpu_id = 0; + regs.vcpu_regs.rip = 0; + + /* CR0_ET | CR0_NE */ + regs.vcpu_regs.cr0 = 0x30U; + regs.vcpu_regs.cs_ar = 0x009FU; + regs.vcpu_regs.cs_sel = 0xF000U; + regs.vcpu_regs.cs_limit = 0xFFFFU; + regs.vcpu_regs.cs_base = 0 & 0xFFFF0000UL; + regs.vcpu_regs.rip = 0 & 0xFFFFUL; + + ret = ioctl(hsm_fd, ACRN_IOCTL_SET_VCPU_REGS, ®s); + printf("Set up VM BSP registers! [%d]\n", ret); + + /* create an ioreq client for this VM */ + ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_IOREQ_CLIENT, 0); + printf("Created IO request client! [%d]\n", ret); + + /* run vm */ + ret = ioctl(hsm_fd, ACRN_IOCTL_START_VM, vmid); + printf("Start VM! [%d]\n", ret); + + signal(SIGINT, vm_exit); + while (is_running) { + ret = ioctl(hsm_fd, ACRN_IOCTL_ATTACH_IOREQ_CLIENT, 0); + + for (vcpu_id = 0; vcpu_id < vcpu_num; vcpu_id++) { + io_req = &io_req_buf[vcpu_id]; + if ((__sync_add_and_fetch(&io_req->processed, 0) == ACRN_IOREQ_STATE_PROCESSING) + && (!io_req->kernel_handled)) + if (io_req->type == ACRN_IOREQ_TYPE_PORTIO) { + int bytes, port, in; + + port = io_req->reqs.pio_request.address; + bytes = io_req->reqs.pio_request.size; + in = (io_req->reqs.pio_request.direction == ACRN_IOREQ_DIR_READ); + printf("Guest VM %s PIO[%x] with size[%x]\n", in ? "read" : "write", port, bytes); + + notify.vmid = vmid; + notify.vcpu = vcpu_id; + ioctl(hsm_fd, ACRN_IOCTL_NOTIFY_REQUEST_FINISH, ¬ify); + } + } + } + + ret = ioctl(hsm_fd, ACRN_IOCTL_DESTROY_VM, NULL); + printf("Destroy VM! [%d]\n", ret); + close(hsm_fd); + free(guest_memory); + return 0; +} -- cgit v1.3.1