linux-toradex.git/include/xen/interface/io/blkif.h, branch v3.10.92

xen/blkback: correctly respond to unknown, non-native requests

2013-03-11T17:54:28+00:00

If the frontend is using a non-native protocol (e.g., a 64-bit
frontend with a 32-bit backend) and it sent an unrecognized request,
the request was not translated and the response would have the
incorrect ID.  This may cause the frontend driver to behave
incorrectly or crash.

Since the ID field in the request is always in the same place,
regardless of the request type we can get the correct ID and make a
valid response (which will report BLKIF_RSP_EOPNOTSUPP).

This bug affected 64-bit SLES 11 guests when using a 32-bit backend.
This guest does a BLKIF_OP_RESERVED_1 (BLKIF_OP_PACKET in the SLES
source) and would crash in blkif_int() as the ID in the response would
be invalid.

Signed-off-by: David Vrabel 
Cc: stable@vger.kernel.org
Signed-off-by: Konrad Rzeszutek Wilk

UAPI: (Scripted) Convert #include "..." to #include in kernel system headers

2012-10-02T17:01:25+00:00

Convert #include "..." to #include  in kernel system headers.

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones

xen/blk[front|back]: Enhance discard support with secure erasing support.

2011-11-18T18:28:01+00:00

Part of the blkdev_issue_discard(xx) operation is that it can also
issue a secure discard operation that will permanantly remove the
sectors in question. We advertise that we can support that via the
'discard-secure' attribute and on the request, if the 'secure' bit
is set, we will attempt to pass in REQ_DISCARD | REQ_SECURE.

CC: Li Dongyang 
[v1: Used 'flag' instead of 'secure:1' bit]
[v2: Use 'reserved' uint8_t instead of adding a new value]
[v3: Check for nseg when mapping instead of operation]
Signed-off-by: Konrad Rzeszutek Wilk

xen/blk[front|back]: Squash blkif_request_rw and blkif_request_discard together

2011-11-18T18:27:59+00:00

In a union type structure to deal with the overlapping
attributes in a easier manner.

Suggested-by: Ian Campbell 
Signed-off-by: Konrad Rzeszutek Wilk

xen-blkfront: add BLKIF_OP_DISCARD and discard request struct

2011-10-13T13:48:29+00:00

Now we use BLKIF_OP_DISCARD and add blkif_request_discard to blkif_request union,
the patch is taken from Owen Smith and Konrad, Thanks

Signed-off-by: Owen Smith 
Signed-off-by: Li Dongyang 
Signed-off-by: Konrad Rzeszutek Wilk

xen-blkfront: Provide for 'feature-flush-cache' the BLKIF_OP_WRITE_FLUSH_CACHE operation.

2011-05-12T12:55:56+00:00

The operation BLKIF_OP_WRITE_FLUSH_CACHE has existed in the Xen
tree header file for years but it was never present in the Linux tree
because the frontend (nor the backend) supported this interface.

Signed-off-by: Konrad Rzeszutek Wilk

Merge branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm

2011-03-15T17:59:09+00:00

* 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
  xen: suspend: remove xen_hvm_suspend
  xen: suspend: pull pre/post suspend hooks out into suspend_info
  xen: suspend: move arch specific pre/post suspend hooks into generic hooks
  xen: suspend: refactor non-arch specific pre/post suspend hooks
  xen: suspend: add "arch" to pre/post suspend hooks
  xen: suspend: pass extra hypercall argument via suspend_info struct
  xen: suspend: refactor cancellation flag into a structure
  xen: suspend: use HYPERVISOR_suspend for PVHVM case instead of open coding
  xen: switch to new schedop hypercall by default.
  xen: use new schedop interface for suspend
  xen: do not respond to unknown xenstore control requests
  xen: fix compile issue if XEN is enabled but XEN_PVHVM is disabled
  xen: PV on HVM: support PV spinlocks and IPIs
  xen: make the ballon driver work for hvm domains
  xen-blkfront: handle Xen major numbers other than XENVBD
  xen: do not use xen_info on HVM, set pv_info name to "Xen HVM"
  xen: no need to delay xen_setup_shutdown_event for hvm guests anymore

xen: Union the blkif_request request specific fields

2011-03-08T20:07:00+00:00

Prepare for extending the block device ring to allow request
specific fields, by moving the request specific fields for
reads, writes and barrier requests to a union member.

Acked-by: Jens Axboe 
Signed-off-by: Owen Smith 
Signed-off-by: Konrad Rzeszutek Wilk

xen-blkfront: handle Xen major numbers other than XENVBD

2011-02-25T16:43:05+00:00

This patch makes sure blkfront handles correctly virtual device numbers
corresponding to Xen emulated IDE and SCSI disks: in those cases
blkfront translates the major number to XENVBD and the minor number to a
low xvd minor.

Note: this behaviour is different from what old xenlinux PV guests used
to do: they used to steal an IDE or SCSI major number and use it
instead.

Signed-off-by: Stefano Stabellini 
Acked-by: Jeremy Fitzhardinge

xen: Add Xen interface header files

2007-07-18T15:47:42+00:00

Add Xen interface header files. These are taken fairly directly from
the Xen tree, but somewhat rearranged to suit the kernel's conventions.

Define macros and inline functions for doing hypercalls into the
hypervisor.

Signed-off-by: Jeremy Fitzhardinge 
Signed-off-by: Ian Pratt 
Signed-off-by: Christian Limpach 
Signed-off-by: Chris Wright