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authorJohn Baldwin <jhb@FreeBSD.org>2020-05-05 00:02:04 +0000
committerJohn Baldwin <jhb@FreeBSD.org>2020-05-05 00:02:04 +0000
commit483d953a86a2507355f8287c5107dc827a0ff516 (patch)
treeb74b1559959b80cd48bffb9763b67959fd4c182b /lib/libvmmapi/vmmapi.c
parent51a5392297a7a014b1cf367922359cd54fb7a393 (diff)
Notes
Diffstat (limited to 'lib/libvmmapi/vmmapi.c')
-rw-r--r--lib/libvmmapi/vmmapi.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/libvmmapi/vmmapi.c b/lib/libvmmapi/vmmapi.c
index 11f38c926cc3c..7347c41dd3116 100644
--- a/lib/libvmmapi/vmmapi.c
+++ b/lib/libvmmapi/vmmapi.c
@@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <machine/specialreg.h>
#include <errno.h>
+#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
@@ -53,8 +54,10 @@ __FBSDID("$FreeBSD$");
#include <libutil.h>
+#include <vm/vm.h>
#include <machine/vmm.h>
#include <machine/vmm_dev.h>
+#include <machine/vmm_snapshot.h>
#include "vmmapi.h"
@@ -238,6 +241,17 @@ vm_mmap_memseg(struct vmctx *ctx, vm_paddr_t gpa, int segid, vm_ooffset_t off,
}
int
+vm_get_guestmem_from_ctx(struct vmctx *ctx, char **guest_baseaddr,
+ size_t *lowmem_size, size_t *highmem_size)
+{
+
+ *guest_baseaddr = ctx->baseaddr;
+ *lowmem_size = ctx->lowmem;
+ *highmem_size = ctx->highmem;
+ return (0);
+}
+
+int
vm_mmap_getnext(struct vmctx *ctx, vm_paddr_t *gpa, int *segid,
vm_ooffset_t *segoff, size_t *len, int *prot, int *flags)
{
@@ -448,6 +462,34 @@ vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len)
return (NULL);
}
+vm_paddr_t
+vm_rev_map_gpa(struct vmctx *ctx, void *addr)
+{
+ vm_paddr_t offaddr;
+
+ offaddr = (char *)addr - ctx->baseaddr;
+
+ if (ctx->lowmem > 0)
+ if (offaddr >= 0 && offaddr <= ctx->lowmem)
+ return (offaddr);
+
+ if (ctx->highmem > 0)
+ if (offaddr >= 4*GB && offaddr < 4*GB + ctx->highmem)
+ return (offaddr);
+
+ return ((vm_paddr_t)-1);
+}
+
+/* TODO: maximum size for vmname */
+int
+vm_get_name(struct vmctx *ctx, char *buf, size_t max_len)
+{
+
+ if (strlcpy(buf, ctx->name, max_len) >= max_len)
+ return (EINVAL);
+ return (0);
+}
+
size_t
vm_get_lowmem_size(struct vmctx *ctx)
{
@@ -1502,6 +1544,29 @@ vm_restart_instruction(void *arg, int vcpu)
}
int
+vm_snapshot_req(struct vm_snapshot_meta *meta)
+{
+
+ if (ioctl(meta->ctx->fd, VM_SNAPSHOT_REQ, meta) == -1) {
+#ifdef SNAPSHOT_DEBUG
+ fprintf(stderr, "%s: snapshot failed for %s: %d\r\n",
+ __func__, meta->dev_name, errno);
+#endif
+ return (-1);
+ }
+ return (0);
+}
+
+int
+vm_restore_time(struct vmctx *ctx)
+{
+ int dummy;
+
+ dummy = 0;
+ return (ioctl(ctx->fd, VM_RESTORE_TIME, &dummy));
+}
+
+int
vm_set_topology(struct vmctx *ctx,
uint16_t sockets, uint16_t cores, uint16_t threads, uint16_t maxcpus)
{