[PATCH 0/8] hw/dma: Introduce dma_size_t type definition

[Philippe Mathieu-Daudé]

Hi,

This series aims to clarify a bit the DMA API, in particular the
'size' argument which is not clear enough (as we use multiple types
for it). The clarification is trivial: add a dma_size_t typedef,
similar to the dma_addr_t one. This helps avoiding build failures
on 32-bit host [*] (and likely overflows calculation too IMO).

Some units using the DMA API are first removed from user-mode
emulation to avoid build failure (they shouldn't be there in
the first place).

Then some variables are renamed for clarity (no functional change).

Finally the dma_size_t typedef is added, and the previous patch
which failed on 32-bit host applied on top (not failing anymore).

Regards,

Phil.

[*] https://www.mail-archive.com/qemu-devel@nongnu.org/msg858825.html

Philippe Mathieu-Daudé (8):
  hw/nvram: Restrict stub to sysemu and tools
  hw/pci: Restrict pci-bus stub to sysemu
  hw/pci: Document pci_dma_map()
  hw/dma: Remove CONFIG_USER_ONLY check
  hw/rdma/rdma_utils: Rename rdma_pci_dma_map 'len' argument
  hw/scsi: Rename SCSIRequest::resid as 'residual'
  hw/dma: Introduce dma_size_t type definition
  hw/dma: Let dma_buf_read() / dma_buf_write() propagate MemTxResult

 hw/rdma/rdma_utils.h      |  4 +-
 include/hw/pci/pci.h      | 22 +++++++---
 include/hw/scsi/scsi.h    |  4 +-
 include/sysemu/dma.h      | 59 ++++++++++++++-------------
 hw/ide/ahci.c             | 10 ++---
 hw/nvme/ctrl.c            |  6 +--
 hw/nvram/fw_cfg.c         |  2 +-
 hw/rdma/rdma_utils.c      | 16 ++++----
 hw/rdma/vmw/pvrdma_main.c |  2 +-
 hw/scsi/lsi53c895a.c      |  4 +-
 hw/scsi/megasas.c         | 85 +++++++++++++++++++++++++++------------
 hw/scsi/scsi-bus.c        | 12 +++---
 hw/scsi/scsi-disk.c       |  4 +-
 hw/usb/libhw.c            |  4 +-
 softmmu/dma-helpers.c     | 38 ++++++++---------
 hw/nvram/meson.build      |  6 ++-
 hw/rdma/trace-events      |  2 +-
 stubs/meson.build         |  4 +-
 18 files changed, 164 insertions(+), 120 deletions(-)

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2.33.1