diff options
Diffstat (limited to 'lib/libvmmapi')
| -rw-r--r-- | lib/libvmmapi/vmmapi.c | 18 | ||||
| -rw-r--r-- | lib/libvmmapi/vmmapi.h | 3 |
2 files changed, 18 insertions, 3 deletions
diff --git a/lib/libvmmapi/vmmapi.c b/lib/libvmmapi/vmmapi.c index 4a7f852..b853ae7 100644 --- a/lib/libvmmapi/vmmapi.c +++ b/lib/libvmmapi/vmmapi.c @@ -57,6 +57,7 @@ struct vmctx { int fd; uint32_t lowmem_limit; enum vm_mmap_style vms; + int memflags; size_t lowmem; char *lowmem_addr; size_t highmem; @@ -101,6 +102,7 @@ vm_open(const char *name) assert(vm != NULL); vm->fd = -1; + vm->memflags = 0; vm->lowmem_limit = 3 * GB; vm->name = (char *)(vm + 1); strcpy(vm->name, name); @@ -180,10 +182,17 @@ vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit) ctx->lowmem_limit = limit; } +void +vm_set_memflags(struct vmctx *ctx, int flags) +{ + + ctx->memflags = flags; +} + static int setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr) { - int error; + int error, mmap_flags; struct vm_memory_segment seg; /* @@ -195,8 +204,11 @@ setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr) seg.len = len; error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg); if (error == 0 && addr != NULL) { - *addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, - ctx->fd, gpa); + mmap_flags = MAP_SHARED; + if ((ctx->memflags & VM_MEM_F_INCORE) == 0) + mmap_flags |= MAP_NOCORE; + *addr = mmap(NULL, len, PROT_READ | PROT_WRITE, mmap_flags, + ctx->fd, gpa); } return (error); } diff --git a/lib/libvmmapi/vmmapi.h b/lib/libvmmapi/vmmapi.h index 2a2ca6b..c1a4b35 100644 --- a/lib/libvmmapi/vmmapi.h +++ b/lib/libvmmapi/vmmapi.h @@ -42,6 +42,8 @@ enum vm_mmap_style { VM_MMAP_SPARSE, /* mappings created on-demand */ }; +#define VM_MEM_F_INCORE 0x01 /* include guest memory in core file */ + int vm_create(const char *name); struct vmctx *vm_open(const char *name); void vm_destroy(struct vmctx *ctx); @@ -53,6 +55,7 @@ void *vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len); int vm_get_gpa_pmap(struct vmctx *, uint64_t gpa, uint64_t *pte, int *num); uint32_t vm_get_lowmem_limit(struct vmctx *ctx); void vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit); +void vm_set_memflags(struct vmctx *ctx, int flags); int vm_set_desc(struct vmctx *ctx, int vcpu, int reg, uint64_t base, uint32_t limit, uint32_t access); int vm_get_desc(struct vmctx *ctx, int vcpu, int reg, |
