[PATCH v2 0/4] fw_cfg: add DMA operations & etc/vmcoreinfo support

[marcandre . lureau]

From: Marc-Andrà Lureau <marcandre.lureau@xxxxxxxxxx>

Hi,

This series brings DMA operations support to the fw_cfg kernel module
and provide "etc/vmcoreinfo" support.

At the current iteration of "[Qemu-devel] [PATCH v6 0/7] KASLR kernel
dump support" patch series, a "etc/vmcoreinfo" entry is added with
qemu -device vmcoreinfo, where the guest during boot or later, can
write the addr/size location of a ELF note to be appended in the qemu
dump.

v2:
- use platform device for dma mapping
- add etc/vmcoreinfo patch
- some code cleanups

Marc-Andrà Lureau (4):
  fw_cfg: add DMA register
  fw_cfg: do DMA read operation
  fw_cfg: write vmcoreinfo details
  RFC: fw_cfg: add DMA write operation in sysfs

 drivers/firmware/qemu_fw_cfg.c | 284 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 254 insertions(+), 30 deletions(-)

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2.14.1.146.gd35faa819