diff options
| author | Marcel Apfelbaum <marcel@redhat.com> | 2017-12-13 16:37:37 +0200 |
|---|---|---|
| committer | Marcel Apfelbaum <marcel@redhat.com> | 2018-02-19 13:03:24 +0200 |
| commit | 06329ccecfa022494fdba288b3ab5bcb8dff4159 (patch) | |
| tree | 6ac05bd91e27d422a5e7d4e1804d626f17216e8e /include/sysemu | |
| parent | e5ecc287a7bd24a1364e23e263cb60cfc8d21eb5 (diff) | |
mem: add share parameter to memory-backend-ram
Currently only file backed memory backend can
be created with a "share" flag in order to allow
sharing guest RAM with other processes in the host.
Add the "share" flag also to RAM Memory Backend
in order to allow remapping parts of the guest RAM
to different host virtual addresses. This is needed
by the RDMA devices in order to remap non-contiguous
QEMU virtual addresses to a contiguous virtual address range.
Moved the "share" flag to the Host Memory base class,
modified phys_mem_alloc to include the new parameter
and a new interface memory_region_init_ram_shared_nomigrate.
There are no functional changes if the new flag is not used.
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Diffstat (limited to 'include/sysemu')
| -rw-r--r-- | include/sysemu/hostmem.h | 2 | ||||
| -rw-r--r-- | include/sysemu/kvm.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h index 621a3f9d42..d5ab0b99c6 100644 --- a/include/sysemu/hostmem.h +++ b/include/sysemu/hostmem.h @@ -54,7 +54,7 @@ struct HostMemoryBackend { char *id; uint64_t size; bool merge, dump; - bool prealloc, force_prealloc, is_mapped; + bool prealloc, force_prealloc, is_mapped, share; DECLARE_BITMAP(host_nodes, MAX_NODES + 1); HostMemPolicy policy; diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index bbf12a1723..85002ac49a 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -248,7 +248,7 @@ int kvm_on_sigbus(int code, void *addr); /* interface with exec.c */ -void phys_mem_set_alloc(void *(*alloc)(size_t, uint64_t *align)); +void phys_mem_set_alloc(void *(*alloc)(size_t, uint64_t *align, bool shared)); /* internal API */ |