[PATCH v5 0/2] xen: modify kernel mappings corresponding to granted pages

[Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>]

Hi all,
this is the fifth version of the patch "xen: modify kernel mappings
corresponding to granted pages":


changes to v4:

- add many more comments to the code;

- fix some code style issues;

- use set_page_private/page_private macros;

- compare with GNTST_general_error rather than -1;

- BUG in case map->pages are highmem;


Changes to v3:

- move the xen_mc_entry call in m2p_remove_override after the
xen_mc_flush call;

- use false rather than 0 as a parameter to alloc_xenballooned_pages;

- update the m2p_add_override call in blkback.c, following the new
interface;

- fix few code style issues.


Changes to v2:

- drop highmem support;

- fold the multicall patch into the main patch;

- add another patch to extend the alloc_xenballooned_pages interface
with an highmem parameter that allows the caller to explicitly request
for highmem or lowmem pages;

- modify gntdev to use lowmem pages only thanks to the new
alloc_xenballooned_pages interface.


Shortlog and diffstat follow:

Stefano Stabellini (2):
      xen: add an "highmem" parameter to alloc_xenballooned_pages
      xen: modify kernel mappings corresponding to granted pages

 arch/x86/include/asm/xen/page.h     |    5 ++-
 arch/x86/xen/p2m.c                  |   79 ++++++++++++++++++++++++++++++-----
 drivers/block/xen-blkback/blkback.c |    2 +-
 drivers/xen/balloon.c               |   12 ++++--
 drivers/xen/gntdev.c                |   34 ++++++++++++++-
 drivers/xen/grant-table.c           |    6 +-
 include/xen/balloon.h               |    5 +-
 include/xen/grant_table.h           |    1 +
 8 files changed, 120 insertions(+), 24 deletions(-)


A git branch with the two patches on top of Konrad's "Xen MMU fixes for
3.2" patch series
(1316831299-4144-1-git-send-email-konrad.wilk@oracle.com) on top of
Linux 3.1 rc4 is available here:

git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 3.1-rc4-kernel_mappings_5

Cheers,

Stefano