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| author | Steve Sistare <steven.sistare@oracle.com> | 2025-01-15 11:00:35 -0800 |
|---|---|---|
| committer | Fabiano Rosas <farosas@suse.de> | 2025-01-29 11:43:04 -0300 |
| commit | 28eaa5957d3e4123e34a913991fea1a5ece41f32 (patch) | |
| tree | 0e9d2a686ee95a869890f9fbc1cd9a301f096819 /backends | |
| parent | 2b7e9739fad8812d74e5e0ff4433ec25fb461281 (diff) | |
| download | qemu-28eaa5957d3e4123e34a913991fea1a5ece41f32.zip qemu-28eaa5957d3e4123e34a913991fea1a5ece41f32.tar.gz qemu-28eaa5957d3e4123e34a913991fea1a5ece41f32.tar.bz2 | |
hostmem-memfd: preserve for cpr
Preserve memory-backend-memfd memory objects during cpr-transfer.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1736967650-129648-10-git-send-email-steven.sistare@oracle.com
Signed-off-by: Fabiano Rosas <farosas@suse.de>
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/hostmem-memfd.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c index 1672da9..85daa14 100644 --- a/backends/hostmem-memfd.c +++ b/backends/hostmem-memfd.c @@ -17,6 +17,7 @@ #include "qemu/module.h" #include "qapi/error.h" #include "qom/object.h" +#include "migration/cpr.h" OBJECT_DECLARE_SIMPLE_TYPE(HostMemoryBackendMemfd, MEMORY_BACKEND_MEMFD) @@ -33,15 +34,19 @@ static bool memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) { HostMemoryBackendMemfd *m = MEMORY_BACKEND_MEMFD(backend); - g_autofree char *name = NULL; + g_autofree char *name = host_memory_backend_get_name(backend); + int fd = cpr_find_fd(name, 0); uint32_t ram_flags; - int fd; if (!backend->size) { error_setg(errp, "can't create backend with size 0"); return false; } + if (fd >= 0) { + goto have_fd; + } + fd = qemu_memfd_create(TYPE_MEMORY_BACKEND_MEMFD, backend->size, m->hugetlb, m->hugetlbsize, m->seal ? F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL : 0, @@ -49,9 +54,10 @@ memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) if (fd == -1) { return false; } + cpr_save_fd(name, 0, fd); +have_fd: backend->aligned = true; - name = host_memory_backend_get_name(backend); ram_flags = backend->share ? RAM_SHARED : RAM_PRIVATE; ram_flags |= backend->reserve ? 0 : RAM_NORESERVE; ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD : 0; |