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

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Date:   Tue, 19 Sep 2017 13:58:10 +0200
From:   marcandre.lureau@...hat.com
To:     linux-kernel@...r.kernel.org
Cc:     somlo@....edu, qemu-devel@...gnu.org, mst@...hat.com,
        Marc-André Lureau <marcandre.lureau@...hat.com>
Subject: [PATCH v2 0/4] fw_cfg: add DMA operations & etc/vmcoreinfo support

From: Marc-André Lureau <marcandre.lureau@...hat.com>

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-André 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(-)

-- 
2.14.1.146.gd35faa819