aboutsummaryrefslogtreecommitdiffstats
path: root/samples
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2021-02-24 10:25:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2021-02-24 10:25:37 -0800
commite229b429bb4af24d9828758c0c851bb6a4169400 (patch)
tree95e49922f6c68b5f81cbf7a39349cfad42c5a0f1 /samples
parent7ac1161c2789be25d0d206e831b051f43028866e (diff)
parentd19db80a366576d3ffadf2508ed876b4c1faf959 (diff)
Merge tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH: "Here is the large set of char/misc/whatever driver subsystem updates for 5.12-rc1. Over time it seems like this tree is collecting more and more tiny driver subsystems in one place, making it easier for those maintainers, which is why this is getting larger. Included in here are: - coresight driver updates - habannalabs driver updates - virtual acrn driver addition (proper acks from the x86 maintainers) - broadcom misc driver addition - speakup driver updates - soundwire driver updates - fpga driver updates - amba driver updates - mei driver updates - vfio driver updates - greybus driver updates - nvmeem driver updates - phy driver updates - mhi driver updates - interconnect driver udpates - fsl-mc bus driver updates - random driver fix - some small misc driver updates (rtsx, pvpanic, etc.) All of these have been in linux-next for a while, with the only reported issue being a merge conflict due to the dfl_device_id addition from the fpga subsystem in here" * tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits) spmi: spmi-pmic-arb: Fix hw_irq overflow Documentation: coresight: Add PID tracing description coresight: etm-perf: Support PID tracing for kernel at EL2 coresight: etm-perf: Clarify comment on perf options ACRN: update MAINTAINERS: mailing list is subscribers-only regmap: sdw-mbq: use MODULE_LICENSE("GPL") regmap: sdw: use no_pm routines for SoundWire 1.2 MBQ regmap: sdw: use _no_pm functions in regmap_read/write soundwire: intel: fix possible crash when no device is detected MAINTAINERS: replace my with email with replacements mhi: Fix double dma free uapi: map_to_7segment: Update example in documentation uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue firewire: replace tricky statement by two simple ones vme: make remove callback return void firmware: google: make coreboot driver's remove callback return void firmware: xilinx: Use explicit values for all enum values sample/acrn: Introduce a sample of HSM ioctl interface usage virt: acrn: Introduce an interface for Service VM to control vCPU ...
Diffstat (limited to 'samples')
-rw-r--r--samples/acrn/Makefile12
-rw-r--r--samples/acrn/guest.ld9
-rw-r--r--samples/acrn/payload.ld9
-rw-r--r--samples/acrn/vm-sample.c136
4 files changed, 166 insertions, 0 deletions
diff --git a/samples/acrn/Makefile b/samples/acrn/Makefile
new file mode 100644
index 000000000000..c8e3ed9785e9
--- /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 000000000000..5127c682bd22
--- /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 000000000000..e8d9a498ad62
--- /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 000000000000..b2dad47a77a0
--- /dev/null
+++ b/samples/acrn/vm-sample.c
@@ -0,0 +1,136 @@
+// 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 need 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 <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <malloc.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <linux/acrn.h>
+
+#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;
+/* POST_STANDARD_VM_UUID1, refer to https://github.com/projectacrn/acrn-hypervisor/blob/master/hypervisor/include/common/vm_uuids.h */
+guid_t vm_uuid = GUID_INIT(0x385479d2, 0xd625, 0xe811, 0x86, 0x4e, 0xcb, 0x7a, 0x18, 0xb3, 0x46, 0x43);
+
+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;
+
+ guest_memory = memalign(4096, GUEST_MEMORY_SIZE);
+ if (!guest_memory) {
+ printf("No enough memory!\n");
+ return -1;
+ }
+ hsm_fd = open("/dev/acrn_hsm", O_RDWR|O_CLOEXEC);
+
+ memcpy(&create_vm.uuid, &vm_uuid, 16);
+ 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(&regs, 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, &regs);
+ 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, &notify);
+ }
+ }
+ }
+
+ ret = ioctl(hsm_fd, ACRN_IOCTL_DESTROY_VM, NULL);
+ printf("Destroy VM! [%d]\n", ret);
+ close(hsm_fd);
+ free(guest_memory);
+ return 0;
+}

Privacy Policy