Once exit to userspace to convert the page from private to shared or vice versa at runtime, notify the state change via the guest_memfd_state_change() helper so that other registered subsystems like VFIO can be notified.
Signed-off-by: Chenyi Qiang <chenyi.qi...@intel.com> --- accel/kvm/kvm-all.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 854cb86b22..94bbbbd2de 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -48,6 +48,7 @@ #include "kvm-cpus.h" #include "sysemu/dirtylimit.h" #include "qemu/range.h" +#include "sysemu/guest-memfd-manager.h" #include "hw/boards.h" #include "sysemu/stats.h" @@ -2852,6 +2853,7 @@ int kvm_convert_memory(hwaddr start, hwaddr size, bool to_private) RAMBlock *rb; void *addr; int ret = -1; + GuestMemfdManager *gmm; trace_kvm_convert_memory(start, size, to_private ? "shared_to_private" : "private_to_shared"); @@ -2914,6 +2916,11 @@ int kvm_convert_memory(hwaddr start, hwaddr size, bool to_private) addr = memory_region_get_ram_ptr(mr) + section.offset_within_region; rb = qemu_ram_block_from_host(addr, false, &offset); + gmm = GUEST_MEMFD_MANAGER(mr->rdm); + if (gmm) { + guest_memfd_state_change(gmm, offset, size, to_private); + } + if (to_private) { if (rb->page_size != qemu_real_host_page_size()) { /* -- 2.43.5