Hi all,
This patch series aims to use the memory terminologies described in
include/linux/mm.h [1] for Linux xen code.
Linux is using mistakenly MFN when GFN is meant, I suspect this is because the
first support of Xen was for PV. This has brought some misimplementation
of memory helpers on ARM and make the developper confused about the expected
behavior.
For instance, with pfn_to_mfn, we expect to get a MFN based on the name.
Although, if we look at the implementation on x86, it's returning a GFN.
Most of the callers are also using it this way.
The first 2 patches of this series is ARM related in order to remove
PV specific helpers which should not be used and fixing the implementation of
pfn_to_mfn.
The rest of the series is here rename most of the usage in the common code
of MFN to GFN. I also took the opportunity to replace most of the call to
pfn_to_gfn in the common code by page_to_gfn avoid construction such
as pfn_to_gfn(page_to_pfn(...).
Note the one xen-blkfront will be dropped by 64K series [2], I can include it
if necessary.
This series is based on Linux 4.2-rc4. A branch with all the patches
can be found here:
git://xenbits.xen.org/people/julieng/linux-arm.git branch page-renaming-v1
Sincerely yours,
[1] Xen tree: e758ed14f390342513405dd766e874934573e6cb
[2] https://lkml.org/lkml/2015/7/9/628
Cc: Boris Ostrovsky <[email protected]>
Cc: David Vrabel <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: Jean-Christophe Plagniol-Villard <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: "Roger Pau Monné" <[email protected]>
Cc: Russell King <[email protected]>
Cc: Stefano Stabellini <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Tomi Valkeinen <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: [email protected]
Julien Grall (8):
arm/xen: Remove helpers which are PV specific
xen: Make clear that swiotlb and biomerge are dealing with DMA address
arm/xen: implement correctly pfn_to_mfn
xen: Use the correctly the Xen memory terminologies
xen/tmem: Use page_to_gfn rather than pfn_to_gfn
video/xen-fbfront: Further s/MFN/GFN clean-up
hvc/xen: Further s/MFN/GFN clean-up
xen/privcmd: Further s/MFN/GFN/ clean-up
arch/arm/include/asm/xen/page.h | 44 +++++++++++++++---------------
arch/arm/xen/enlighten.c | 18 ++++++-------
arch/arm/xen/mm.c | 4 +--
arch/x86/include/asm/xen/page.h | 34 +++++++++++++----------
arch/x86/xen/enlighten.c | 4 +--
arch/x86/xen/mmu.c | 48 ++++++++++++++++-----------------
arch/x86/xen/p2m.c | 32 +++++++++++-----------
arch/x86/xen/setup.c | 12 ++++-----
arch/x86/xen/smp.c | 4 +--
arch/x86/xen/suspend.c | 8 +++---
drivers/block/xen-blkfront.c | 6 ++---
drivers/input/misc/xen-kbdfront.c | 4 +--
drivers/net/xen-netback/netback.c | 4 +--
drivers/net/xen-netfront.c | 8 +++---
drivers/scsi/xen-scsifront.c | 8 +++---
drivers/tty/hvc/hvc_xen.c | 18 +++++--------
drivers/video/fbdev/xen-fbfront.c | 20 +++++++-------
drivers/xen/balloon.c | 2 +-
drivers/xen/biomerge.c | 6 ++---
drivers/xen/events/events_base.c | 2 +-
drivers/xen/events/events_fifo.c | 4 +--
drivers/xen/gntalloc.c | 3 ++-
drivers/xen/manage.c | 2 +-
drivers/xen/privcmd.c | 44 +++++++++++++++---------------
drivers/xen/swiotlb-xen.c | 16 +++++------
drivers/xen/tmem.c | 21 +++++----------
drivers/xen/xenbus/xenbus_client.c | 2 +-
drivers/xen/xenbus/xenbus_dev_backend.c | 2 +-
drivers/xen/xenbus/xenbus_probe.c | 8 +++---
drivers/xen/xlate_mmu.c | 18 ++++++-------
include/uapi/xen/privcmd.h | 4 +++
include/xen/page.h | 4 +--
include/xen/xen-ops.h | 10 +++----
33 files changed, 210 insertions(+), 214 deletions(-)
--
2.1.4
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