Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* cleanups for stubs
* do not link pixman automatically into all targets
* optimize computation of VGA dirty memory region
* kvm: use configs/ definition to conditionalize debug support
* hw: Add compat machines for 9.1
* target/i386: add guest-phys-bits cpu property
* target/i386: Introduce Icelake-Server-v7 and SierraForest models
* target/i386: Export RFDS bit to guests
* q35: SMM ranges cleanups
* target/i386: basic support for confidential guests
* linux-headers: update headers
* target/i386: SEV: use KVM_SEV_INIT2 if possible
* kvm: Introduce support for memory_attributes
* RAMBlock: Add support of KVM private guest memfd
* Consolidate use of warn_report_once()
* pythondeps.toml: warn about updates needed to docs/requirements.txt
* target/i386: always write 32-bits for SGDT and SIDT

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# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [undefined]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [undefined]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (63 commits)
  target/i386/translate.c: always write 32-bits for SGDT and SIDT
  pythondeps.toml: warn about updates needed to docs/requirements.txt
  accel/tcg/icount-common: Consolidate the use of warn_report_once()
  target/i386/cpu: Merge the warning and error messages for AMD HT check
  target/i386/cpu: Consolidate the use of warn_report_once()
  target/i386/host-cpu: Consolidate the use of warn_report_once()
  kvm/tdx: Ignore memory conversion to shared of unassigned region
  kvm/tdx: Don't complain when converting vMMIO region to shared
  kvm: handle KVM_EXIT_MEMORY_FAULT
  physmem: Introduce ram_block_discard_guest_memfd_range()
  RAMBlock: make guest_memfd require uncoordinated discard
  HostMem: Add mechanism to opt in kvm guest memfd via MachineState
  kvm/memory: Make memory type private by default if it has guest memfd backend
  kvm: Enable KVM_SET_USER_MEMORY_REGION2 for memslot
  RAMBlock: Add support of KVM private guest memfd
  kvm: Introduce support for memory_attributes
  trace/kvm: Split address space and slot id in trace_kvm_set_user_memory()
  hw/i386/sev: Use legacy SEV VM types for older machine types
  i386/sev: Add 'legacy-vm-type' parameter for SEV guest objects
  target/i386: SEV: use KVM_SEV_INIT2 if possible
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

4 files changed, 4 insertions, 0 deletions

diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index ac3e433..3c69db7 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -85,6 +85,7 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     ram_flags |= fb->readonly ? RAM_READONLY_FD : 0;
     ram_flags |= fb->rom == ON_OFF_AUTO_ON ? RAM_READONLY : 0;
     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
+    ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD : 0;
     ram_flags |= fb->is_pmem ? RAM_PMEM : 0;
     ram_flags |= RAM_NAMED_FILE;
     return memory_region_init_ram_from_file(&backend->mr, OBJECT(backend), name,
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c
index 3923ea9..745ead0 100644
--- a/backends/hostmem-memfd.c
+++ b/backends/hostmem-memfd.c
@@ -55,6 +55,7 @@ memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     name = host_memory_backend_get_name(backend);
     ram_flags = backend->share ? RAM_SHARED : 0;
     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
+    ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD : 0;
     return memory_region_init_ram_from_fd(&backend->mr, OBJECT(backend), name,
                                           backend->size, ram_flags, fd, 0, errp);
 }
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index d121249..f7d81af 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -30,6 +30,7 @@ ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
     name = host_memory_backend_get_name(backend);
     ram_flags = backend->share ? RAM_SHARED : 0;
     ram_flags |= backend->reserve ? 0 : RAM_NORESERVE;
+    ram_flags |= backend->guest_memfd ? RAM_GUEST_MEMFD : 0;
     return memory_region_init_ram_flags_nomigrate(&backend->mr, OBJECT(backend),
                                                   name, backend->size,
                                                   ram_flags, errp);
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 81a72ce..eb9682b 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -277,6 +277,7 @@ static void host_memory_backend_init(Object *obj)
     /* TODO: convert access to globals to compat properties */
     backend->merge = machine_mem_merge(machine);
     backend->dump = machine_dump_guest_core(machine);
+    backend->guest_memfd = machine_require_guest_memfd(machine);
     backend->reserve = true;
     backend->prealloc_threads = machine->smp.cpus;
 }