diff options
Diffstat (limited to 'softmmu/physmem.c')
| -rw-r--r-- | softmmu/physmem.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/softmmu/physmem.c b/softmmu/physmem.c index a110aa67fd..11ea8e19a6 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -1591,6 +1591,7 @@ static void *file_ram_alloc(RAMBlock *block, qemu_map_flags = readonly ? QEMU_MAP_READONLY : 0; qemu_map_flags |= (block->flags & RAM_SHARED) ? QEMU_MAP_SHARED : 0; qemu_map_flags |= (block->flags & RAM_PMEM) ? QEMU_MAP_SYNC : 0; + qemu_map_flags |= (block->flags & RAM_NORESERVE) ? QEMU_MAP_NORESERVE : 0; area = qemu_ram_mmap(fd, memory, block->mr->align, qemu_map_flags, offset); if (area == MAP_FAILED) { error_setg_errno(errp, errno, @@ -1716,6 +1717,11 @@ bool qemu_ram_is_shared(RAMBlock *rb) return rb->flags & RAM_SHARED; } +bool qemu_ram_is_noreserve(RAMBlock *rb) +{ + return rb->flags & RAM_NORESERVE; +} + /* Note: Only set at the start of postcopy */ bool qemu_ram_is_uf_zeroable(RAMBlock *rb) { @@ -1950,6 +1956,7 @@ static void dirty_memory_extend(ram_addr_t old_ram_size, static void ram_block_add(RAMBlock *new_block, Error **errp) { + const bool noreserve = qemu_ram_is_noreserve(new_block); const bool shared = qemu_ram_is_shared(new_block); RAMBlock *block; RAMBlock *last_block = NULL; @@ -1973,7 +1980,7 @@ static void ram_block_add(RAMBlock *new_block, Error **errp) } else { new_block->host = qemu_anon_ram_alloc(new_block->max_length, &new_block->mr->align, - shared); + shared, noreserve); if (!new_block->host) { error_setg_errno(errp, errno, "cannot set up guest memory '%s'", @@ -2045,7 +2052,7 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr, int64_t file_size, file_align; /* Just support these ram flags by now. */ - assert((ram_flags & ~(RAM_SHARED | RAM_PMEM)) == 0); + assert((ram_flags & ~(RAM_SHARED | RAM_PMEM | RAM_NORESERVE)) == 0); if (xen_enabled()) { error_setg(errp, "-mem-path not supported with Xen"); @@ -2137,6 +2144,8 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size, Error *local_err = NULL; assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC)) == 0); + assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE | RAM_PREALLOC | + RAM_NORESERVE)) == 0); assert(!host ^ (ram_flags & RAM_PREALLOC)); size = HOST_PAGE_ALIGN(size); @@ -2170,7 +2179,7 @@ RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host, RAMBlock *qemu_ram_alloc(ram_addr_t size, uint32_t ram_flags, MemoryRegion *mr, Error **errp) { - assert((ram_flags & ~RAM_SHARED) == 0); + assert((ram_flags & ~(RAM_SHARED | RAM_NORESERVE)) == 0); return qemu_ram_alloc_internal(size, size, NULL, NULL, ram_flags, mr, errp); } |