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1dbb4f0235
After the commits for userspace (see Link tags below) the uuid field is not being used in the ACRN code. Update kernel to reflect these changes, i.e. do the following: - adding a comment explaining that it's not used anymore - replacing the specific type by a raw buffer - updating the example code accordingly The advertised field confused users and actually never been used. So the wrong part here is that kernel puts something which userspace never used and hence this may confuse a reader of this code. Note, that there is only a single tool that had been prepared a year ago for these forthcoming changes in the kernel. Link: https://github.com/projectacrn/acrn-hypervisor/commit/da0d24326ed6 Link: https://github.com/projectacrn/acrn-hypervisor/commit/bb0327e70097 Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20221116162956.72658-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* A sample program to run a User VM on the ACRN hypervisor
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*
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* This sample runs in a Service VM, which is a privileged VM of ACRN.
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* CONFIG_ACRN_HSM need to be enabled in the Service VM.
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*
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* Guest VM code in guest16.s will be executed after the VM launched.
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*
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* Copyright (C) 2020 Intel Corporation. All rights reserved.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <linux/acrn.h>
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#define GUEST_MEMORY_SIZE (1024*1024)
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void *guest_memory;
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extern const unsigned char guest16[], guest16_end[];
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static char io_request_page[4096] __attribute__((aligned(4096)));
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static struct acrn_io_request *io_req_buf = (struct acrn_io_request *)io_request_page;
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__u16 vcpu_num;
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__u16 vmid;
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int hsm_fd;
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int is_running = 1;
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void vm_exit(int sig)
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{
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sig = sig;
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is_running = 0;
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ioctl(hsm_fd, ACRN_IOCTL_PAUSE_VM, vmid);
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ioctl(hsm_fd, ACRN_IOCTL_DESTROY_IOREQ_CLIENT, 0);
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}
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int main(int argc, char **argv)
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{
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int vcpu_id, ret;
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struct acrn_vm_creation create_vm = {0};
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struct acrn_vm_memmap ram_map = {0};
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struct acrn_vcpu_regs regs;
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struct acrn_io_request *io_req;
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struct acrn_ioreq_notify __attribute__((aligned(8))) notify;
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argc = argc;
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argv = argv;
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guest_memory = memalign(4096, GUEST_MEMORY_SIZE);
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if (!guest_memory) {
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printf("No enough memory!\n");
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return -1;
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}
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hsm_fd = open("/dev/acrn_hsm", O_RDWR|O_CLOEXEC);
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create_vm.ioreq_buf = (__u64)io_req_buf;
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ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_VM, &create_vm);
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printf("Created VM! [%d]\n", ret);
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vcpu_num = create_vm.vcpu_num;
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vmid = create_vm.vmid;
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/* setup guest memory */
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ram_map.type = ACRN_MEMMAP_RAM;
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ram_map.vma_base = (__u64)guest_memory;
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ram_map.len = GUEST_MEMORY_SIZE;
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ram_map.user_vm_pa = 0;
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ram_map.attr = ACRN_MEM_ACCESS_RWX;
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ret = ioctl(hsm_fd, ACRN_IOCTL_SET_MEMSEG, &ram_map);
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printf("Set up VM memory! [%d]\n", ret);
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memcpy(guest_memory, guest16, guest16_end-guest16);
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/* setup vcpu registers */
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memset(®s, 0, sizeof(regs));
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regs.vcpu_id = 0;
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regs.vcpu_regs.rip = 0;
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/* CR0_ET | CR0_NE */
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regs.vcpu_regs.cr0 = 0x30U;
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regs.vcpu_regs.cs_ar = 0x009FU;
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regs.vcpu_regs.cs_sel = 0xF000U;
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regs.vcpu_regs.cs_limit = 0xFFFFU;
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regs.vcpu_regs.cs_base = 0 & 0xFFFF0000UL;
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regs.vcpu_regs.rip = 0 & 0xFFFFUL;
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ret = ioctl(hsm_fd, ACRN_IOCTL_SET_VCPU_REGS, ®s);
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printf("Set up VM BSP registers! [%d]\n", ret);
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/* create an ioreq client for this VM */
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ret = ioctl(hsm_fd, ACRN_IOCTL_CREATE_IOREQ_CLIENT, 0);
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printf("Created IO request client! [%d]\n", ret);
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/* run vm */
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ret = ioctl(hsm_fd, ACRN_IOCTL_START_VM, vmid);
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printf("Start VM! [%d]\n", ret);
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signal(SIGINT, vm_exit);
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while (is_running) {
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ret = ioctl(hsm_fd, ACRN_IOCTL_ATTACH_IOREQ_CLIENT, 0);
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for (vcpu_id = 0; vcpu_id < vcpu_num; vcpu_id++) {
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io_req = &io_req_buf[vcpu_id];
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if ((__sync_add_and_fetch(&io_req->processed, 0) == ACRN_IOREQ_STATE_PROCESSING)
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&& (!io_req->kernel_handled))
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if (io_req->type == ACRN_IOREQ_TYPE_PORTIO) {
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int bytes, port, in;
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port = io_req->reqs.pio_request.address;
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bytes = io_req->reqs.pio_request.size;
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in = (io_req->reqs.pio_request.direction == ACRN_IOREQ_DIR_READ);
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printf("Guest VM %s PIO[%x] with size[%x]\n", in ? "read" : "write", port, bytes);
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notify.vmid = vmid;
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notify.vcpu = vcpu_id;
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ioctl(hsm_fd, ACRN_IOCTL_NOTIFY_REQUEST_FINISH, ¬ify);
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}
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}
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}
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ret = ioctl(hsm_fd, ACRN_IOCTL_DESTROY_VM, NULL);
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printf("Destroy VM! [%d]\n", ret);
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close(hsm_fd);
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free(guest_memory);
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return 0;
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}
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