Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio: features,fixes

A bunch of improvements:
- vhost dirty log is now only scanned once, not once per device
- virtio and vhost now support VIRTIO_F_NOTIFICATION_DATA
- cxl gained DCD emulation support
- pvpanic gained shutdown support
- beginning of patchset for Generic Port Affinity Structure
- s3 support
- friendlier error messages when boot fails on some illegal configs
- for vhost-user, VHOST_USER_SET_LOG_BASE is now only sent once
- part of vhost-user support for any POSIX system -
  not yet enabled due to qtest failures
- sr-iov VF setup code has been reworked significantly
- new tests, particularly for risc-v ACPI
- bugfixes

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (85 commits)
  hw/pci: Replace -1 with UINT32_MAX for romsize
  pcie_sriov: Register VFs after migration
  pcie_sriov: Remove num_vfs from PCIESriovPF
  pcie_sriov: Release VFs failed to realize
  pcie_sriov: Reuse SR-IOV VF device instances
  pcie_sriov: Ensure VF function number does not overflow
  pcie_sriov: Do not manually unrealize
  hw/ppc/spapr_pci: Do not reject VFs created after a PF
  hw/ppc/spapr_pci: Do not create DT for disabled PCI device
  hw/pci: Rename has_power to enabled
  virtio-iommu: Clear IOMMUDevice when VFIO device is unplugged
  virtio: remove virtio_tswap16s() call in vring_packed_event_read()
  hw/cxl/events: Mark cxl-add-dynamic-capacity and cxl-release-dynamic-capcity unstable
  hw/cxl/events: Improve QMP interfaces and documentation for add/release dynamic capacity.
  tests/data/acpi/rebuild-expected-aml.sh: Add RISC-V
  pc-bios/meson.build: Add support for RISC-V in unpack_edk2_blobs
  meson.build: Add RISC-V to the edk2-target list
  tests/data/acpi/virt: Move ARM64 ACPI tables under aarch64/${machine} path
  tests/data/acpi: Move x86 ACPI tables under x86/${machine} path
  tests/qtest/bios-tables-test.c: Set "arch" for x86 tests
  ...

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

1 files changed, 12 insertions, 0 deletions

diff --git a/util/vhost-user-server.c b/util/vhost-user-server.c
index 3bfb1ad3ec..b19229074a 100644
--- a/util/vhost-user-server.c
+++ b/util/vhost-user-server.c
@@ -65,6 +65,18 @@ static void vmsg_close_fds(VhostUserMsg *vmsg)
 static void vmsg_unblock_fds(VhostUserMsg *vmsg)
 {
     int i;
+
+    /*
+     * These messages carry fd used to map memory, not to send/receive messages,
+     * so this operation is useless. In addition, in some systems this
+     * operation can fail (e.g. in macOS setting an fd returned by shm_open()
+     * non-blocking fails with errno = ENOTTY)
+     */
+    if (vmsg->request == VHOST_USER_ADD_MEM_REG ||
+        vmsg->request == VHOST_USER_SET_MEM_TABLE) {
+        return;
+    }
+
     for (i = 0; i < vmsg->fd_num; i++) {
         qemu_socket_set_nonblock(vmsg->fds[i]);
     }