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Diffstat (limited to 'sys/dev/vmm/vmm_dev.c')
-rw-r--r--sys/dev/vmm/vmm_dev.c136
1 files changed, 117 insertions, 19 deletions
diff --git a/sys/dev/vmm/vmm_dev.c b/sys/dev/vmm/vmm_dev.c
index 1ffa15dd157b..9f2b009d02ec 100644
--- a/sys/dev/vmm/vmm_dev.c
+++ b/sys/dev/vmm/vmm_dev.c
@@ -30,7 +30,8 @@
#include <dev/vmm/vmm_mem.h>
#include <dev/vmm/vmm_stat.h>
-#if defined(__amd64__) && defined(COMPAT_FREEBSD12)
+#ifdef __amd64__
+#ifdef COMPAT_FREEBSD12
struct vm_memseg_12 {
int segid;
size_t len;
@@ -42,7 +43,22 @@ _Static_assert(sizeof(struct vm_memseg_12) == 80, "COMPAT_FREEBSD12 ABI");
_IOW('v', IOCNUM_ALLOC_MEMSEG, struct vm_memseg_12)
#define VM_GET_MEMSEG_12 \
_IOWR('v', IOCNUM_GET_MEMSEG, struct vm_memseg_12)
-#endif
+#endif /* COMPAT_FREEBSD12 */
+#ifdef COMPAT_FREEBSD14
+struct vm_memseg_14 {
+ int segid;
+ size_t len;
+ char name[VM_MAX_SUFFIXLEN + 1];
+};
+_Static_assert(sizeof(struct vm_memseg_14) == (VM_MAX_SUFFIXLEN + 1 + 16),
+ "COMPAT_FREEBSD14 ABI");
+
+#define VM_ALLOC_MEMSEG_14 \
+ _IOW('v', IOCNUM_ALLOC_MEMSEG, struct vm_memseg_14)
+#define VM_GET_MEMSEG_14 \
+ _IOWR('v', IOCNUM_GET_MEMSEG, struct vm_memseg_14)
+#endif /* COMPAT_FREEBSD14 */
+#endif /* __amd64__ */
struct devmem_softc {
int segid;
@@ -257,7 +273,8 @@ get_memseg(struct vmmdev_softc *sc, struct vm_memseg *mseg, size_t len)
}
static int
-alloc_memseg(struct vmmdev_softc *sc, struct vm_memseg *mseg, size_t len)
+alloc_memseg(struct vmmdev_softc *sc, struct vm_memseg *mseg, size_t len,
+ struct domainset *domainset)
{
char *name;
int error;
@@ -278,8 +295,7 @@ alloc_memseg(struct vmmdev_softc *sc, struct vm_memseg *mseg, size_t len)
if (error)
goto done;
}
-
- error = vm_alloc_memseg(sc->vm, mseg->segid, mseg->len, sysmem);
+ error = vm_alloc_memseg(sc->vm, mseg->segid, mseg->len, sysmem, domainset);
if (error)
goto done;
@@ -295,6 +311,20 @@ done:
return (error);
}
+#if defined(__amd64__) && \
+ (defined(COMPAT_FREEBSD14) || defined(COMPAT_FREEBSD12))
+/*
+ * Translate pre-15.0 memory segment identifiers into their 15.0 counterparts.
+ */
+static void
+adjust_segid(struct vm_memseg *mseg)
+{
+ if (mseg->segid != VM_SYSMEM) {
+ mseg->segid += (VM_BOOTROM - 1);
+ }
+}
+#endif
+
static int
vm_get_register_set(struct vcpu *vcpu, unsigned int count, int *regnum,
uint64_t *regval)
@@ -351,11 +381,18 @@ static const struct vmmdev_ioctl vmmdev_ioctls[] = {
VMMDEV_IOCTL(VM_ACTIVATE_CPU, VMMDEV_IOCTL_LOCK_ONE_VCPU),
VMMDEV_IOCTL(VM_INJECT_EXCEPTION, VMMDEV_IOCTL_LOCK_ONE_VCPU),
VMMDEV_IOCTL(VM_STATS, VMMDEV_IOCTL_LOCK_ONE_VCPU),
+ VMMDEV_IOCTL(VM_STAT_DESC, 0),
-#if defined(__amd64__) && defined(COMPAT_FREEBSD12)
+#ifdef __amd64__
+#ifdef COMPAT_FREEBSD12
VMMDEV_IOCTL(VM_ALLOC_MEMSEG_12,
VMMDEV_IOCTL_XLOCK_MEMSEGS | VMMDEV_IOCTL_LOCK_ALL_VCPUS),
#endif
+#ifdef COMPAT_FREEBSD14
+ VMMDEV_IOCTL(VM_ALLOC_MEMSEG_14,
+ VMMDEV_IOCTL_XLOCK_MEMSEGS | VMMDEV_IOCTL_LOCK_ALL_VCPUS),
+#endif
+#endif /* __amd64__ */
VMMDEV_IOCTL(VM_ALLOC_MEMSEG,
VMMDEV_IOCTL_XLOCK_MEMSEGS | VMMDEV_IOCTL_LOCK_ALL_VCPUS),
VMMDEV_IOCTL(VM_MMAP_MEMSEG,
@@ -365,9 +402,14 @@ static const struct vmmdev_ioctl vmmdev_ioctls[] = {
VMMDEV_IOCTL(VM_REINIT,
VMMDEV_IOCTL_XLOCK_MEMSEGS | VMMDEV_IOCTL_LOCK_ALL_VCPUS),
-#if defined(__amd64__) && defined(COMPAT_FREEBSD12)
+#ifdef __amd64__
+#if defined(COMPAT_FREEBSD12)
VMMDEV_IOCTL(VM_GET_MEMSEG_12, VMMDEV_IOCTL_SLOCK_MEMSEGS),
#endif
+#ifdef COMPAT_FREEBSD14
+ VMMDEV_IOCTL(VM_GET_MEMSEG_14, VMMDEV_IOCTL_SLOCK_MEMSEGS),
+#endif
+#endif /* __amd64__ */
VMMDEV_IOCTL(VM_GET_MEMSEG, VMMDEV_IOCTL_SLOCK_MEMSEGS),
VMMDEV_IOCTL(VM_MMAP_GETNEXT, VMMDEV_IOCTL_SLOCK_MEMSEGS),
@@ -387,6 +429,7 @@ vmmdev_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag,
struct vmmdev_softc *sc;
struct vcpu *vcpu;
const struct vmmdev_ioctl *ioctl;
+ struct vm_memseg *mseg;
int error, vcpuid;
sc = vmmdev_lookup2(cdev);
@@ -498,20 +541,77 @@ vmmdev_ioctl(struct cdev *cdev, u_long cmd, caddr_t data, int fflag,
error = vm_munmap_memseg(sc->vm, mu->gpa, mu->len);
break;
}
-#if defined(__amd64__) && defined(COMPAT_FREEBSD12)
+#ifdef __amd64__
+#ifdef COMPAT_FREEBSD12
case VM_ALLOC_MEMSEG_12:
- error = alloc_memseg(sc, (struct vm_memseg *)data,
- sizeof(((struct vm_memseg_12 *)0)->name));
+ mseg = (struct vm_memseg *)data;
+
+ adjust_segid(mseg);
+ error = alloc_memseg(sc, mseg,
+ sizeof(((struct vm_memseg_12 *)0)->name), NULL);
break;
case VM_GET_MEMSEG_12:
- error = get_memseg(sc, (struct vm_memseg *)data,
+ mseg = (struct vm_memseg *)data;
+
+ adjust_segid(mseg);
+ error = get_memseg(sc, mseg,
sizeof(((struct vm_memseg_12 *)0)->name));
break;
-#endif
- case VM_ALLOC_MEMSEG:
- error = alloc_memseg(sc, (struct vm_memseg *)data,
- sizeof(((struct vm_memseg *)0)->name));
+#endif /* COMPAT_FREEBSD12 */
+#ifdef COMPAT_FREEBSD14
+ case VM_ALLOC_MEMSEG_14:
+ mseg = (struct vm_memseg *)data;
+
+ adjust_segid(mseg);
+ error = alloc_memseg(sc, mseg,
+ sizeof(((struct vm_memseg_14 *)0)->name), NULL);
+ break;
+ case VM_GET_MEMSEG_14:
+ mseg = (struct vm_memseg *)data;
+
+ adjust_segid(mseg);
+ error = get_memseg(sc, mseg,
+ sizeof(((struct vm_memseg_14 *)0)->name));
+ break;
+#endif /* COMPAT_FREEBSD14 */
+#endif /* __amd64__ */
+ case VM_ALLOC_MEMSEG: {
+ domainset_t *mask;
+ struct domainset *domainset, domain;
+
+ domainset = NULL;
+ mseg = (struct vm_memseg *)data;
+ if (mseg->ds_policy != DOMAINSET_POLICY_INVALID && mseg->ds_mask != NULL) {
+ if (mseg->ds_mask_size < sizeof(domainset_t) ||
+ mseg->ds_mask_size > DOMAINSET_MAXSIZE / NBBY) {
+ error = ERANGE;
+ break;
+ }
+ memset(&domain, 0, sizeof(domain));
+ mask = malloc(mseg->ds_mask_size, M_VMMDEV, M_WAITOK);
+ error = copyin(mseg->ds_mask, mask, mseg->ds_mask_size);
+ if (error) {
+ free(mask, M_VMMDEV);
+ break;
+ }
+ error = domainset_populate(&domain, mask, mseg->ds_policy,
+ mseg->ds_mask_size);
+ if (error) {
+ free(mask, M_VMMDEV);
+ break;
+ }
+ domainset = domainset_create(&domain);
+ if (domainset == NULL) {
+ error = EINVAL;
+ free(mask, M_VMMDEV);
+ break;
+ }
+ free(mask, M_VMMDEV);
+ }
+ error = alloc_memseg(sc, mseg, sizeof(mseg->name), domainset);
+
break;
+ }
case VM_GET_MEMSEG:
error = get_memseg(sc, (struct vm_memseg *)data,
sizeof(((struct vm_memseg *)0)->name));
@@ -819,7 +919,6 @@ sysctl_vmm_destroy(SYSCTL_HANDLER_ARGS)
buflen = VM_MAX_NAMELEN + 1;
buf = malloc(buflen, M_VMMDEV, M_WAITOK | M_ZERO);
- strlcpy(buf, "beavis", buflen);
error = sysctl_handle_string(oidp, buf, buflen, req);
if (error == 0 && req->newptr != NULL)
error = vmmdev_lookup_and_destroy(buf, req->td->td_ucred);
@@ -829,7 +928,7 @@ sysctl_vmm_destroy(SYSCTL_HANDLER_ARGS)
SYSCTL_PROC(_hw_vmm, OID_AUTO, destroy,
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
NULL, 0, sysctl_vmm_destroy, "A",
- NULL);
+ "Destroy a vmm(4) instance (legacy interface)");
static struct cdevsw vmmdevsw = {
.d_name = "vmmdev",
@@ -908,7 +1007,6 @@ sysctl_vmm_create(SYSCTL_HANDLER_ARGS)
buflen = VM_MAX_NAMELEN + 1;
buf = malloc(buflen, M_VMMDEV, M_WAITOK | M_ZERO);
- strlcpy(buf, "beavis", buflen);
error = sysctl_handle_string(oidp, buf, buflen, req);
if (error == 0 && req->newptr != NULL)
error = vmmdev_create(buf, req->td->td_ucred);
@@ -918,7 +1016,7 @@ sysctl_vmm_create(SYSCTL_HANDLER_ARGS)
SYSCTL_PROC(_hw_vmm, OID_AUTO, create,
CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE,
NULL, 0, sysctl_vmm_create, "A",
- NULL);
+ "Create a vmm(4) instance (legacy interface)");
static int
vmmctl_open(struct cdev *cdev, int flags, int fmt, struct thread *td)
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-30 21:16:49 +0000