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Julien Grall 0df4f266b3 xen: Use correctly the Xen memory terminologies 
Based on include/xen/mm.h [1], Linux is mistakenly using MFN when GFN
is meant, I suspect this is because the first support for Xen was for
PV. This resulted in some misimplementation of helpers on ARM and
confused developers about the expected behavior.

For instance, with pfn_to_mfn, we expect to get an MFN based on the name.
Although, if we look at the implementation on x86, it's returning a GFN.

For clarity and avoid new confusion, replace any reference to mfn with
gfn in any helpers used by PV drivers. The x86 code will still keep some
reference of pfn_to_mfn which may be used by all kind of guests
No changes as been made in the hypercall field, even
though they may be invalid, in order to keep the same as the defintion
in xen repo.

Note that page_to_mfn has been renamed to xen_page_to_gfn to avoid a
name to close to the KVM function gfn_to_page.

Take also the opportunity to simplify simple construction such
as pfn_to_mfn(page_to_pfn(page)) into xen_page_to_gfn. More complex clean up
will come in follow-up patches.

[1] http://xenbits.xen.org/gitweb/?p=xen.git;a=commitdiff;h=e758ed14f390342513405dd766e874934573e6cb

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-09-08 18:03:49 +01:00
..
aacraid aacraid: aac_src_intr_message() can be static 2015-05-25 08:46:25 -07:00
aic7xxx aic7xxx: replace kmalloc/memset by kzalloc 2015-04-09 13:22:10 -07:00
aic94xx scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
arcmsr
arm scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
be2iscsi be2iscsi : Bump the driver version 2015-05-25 08:57:53 -07:00
bfa bfs: bfad_worker cleanup 2015-04-17 09:04:09 -04:00
bnx2fc
bnx2i bnx2i: Fix call trace while device reset 2015-06-02 17:15:24 -07:00
csiostor csiostor: fix an error code in csio_hw_init() 2015-05-25 08:46:26 -07:00
cxgbi libcxgbi: use kvfree() in cxgbi_free_big_mem() 2015-06-30 19:45:00 -07:00
device_handler
dpt
esas2r
fcoe
fnic x86/mm: Decouple <linux/vmalloc.h> from <asm/io.h> 2015-06-03 12:02:00 +02:00
ibmvscsi IB/srp: Add 64-bit LUN support 2015-05-18 13:35:56 -04:00
isci scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
libfc libfc: Fix fc_fcp_cleanup_each_cmd() 2015-08-12 11:24:21 -07:00
libsas Merge branch 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-03-24 17:08:29 -07:00
lpfc SCSI misc on 20150622 2015-06-23 15:55:44 -07:00
megaraid SCSI misc on 20150622 2015-06-23 15:55:44 -07:00
mpt2sas
mpt3sas
mvsas scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
osd Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
pcmcia scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
pm8001 scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla2xxx qla2xxx: terminate exchange when command is aborted by LIO 2015-07-24 14:19:42 -07:00
qla4xxx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-06-24 16:49:49 -07:00
snic snic: driver for Cisco SCSI HBA 2015-06-19 16:57:51 -07:00
sym53c8xx_2
ufs SCSI misc on 20150622 2015-06-23 15:55:44 -07:00
.gitignore
3w-9xxx.c 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-9xxx.h 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-sas.c 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-sas.h 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-xxxx.c 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
3w-xxxx.h 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
53c700.c
53c700.h
53c700.scr
53c700_d.h_shipped
a100u2w.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c advansys: fix compilation errors and warnings when CONFIG_PCI is not set 2015-06-13 08:42:36 -07:00
aha152x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha152x.h
aha1542.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1542.h aha1542: fix include guard and remove useless changelog 2015-04-09 18:08:31 -07:00
aha1740.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1740.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
am53c974.c am53c974: Fix crash during modprobe 2015-04-17 10:13:56 -07:00
atari_NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
atari_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
atp870u.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
atp870u.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
BusLogic.c
BusLogic.h
bvme6000_scsi.c
ch.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
constants.c
dc395x.c
dc395x.h
dmx3191d.c
dpt_i2o.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
dpti.h
dtc.c
dtc.h
eata.c
eata_generic.h
eata_pio.c
eata_pio.h
esp_scsi.c
esp_scsi.h
fdomain.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
fdomain.h
FlashPoint.c
g_NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
g_NCR5380.h
g_NCR5380_mmio.c
gdth.c
gdth.h
gdth_ioctl.h
gdth_proc.c
gdth_proc.h
gvp11.c
gvp11.h
hosts.c
hpsa.c hpsa: change driver version 2015-05-31 17:48:35 -07:00
hpsa.h hpsa: cleanup reset 2015-05-31 17:47:31 -07:00
hpsa_cmd.h hpsa: cleanup reset 2015-05-31 17:47:31 -07:00
hptiop.c
hptiop.h
imm.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
imm.h
in2000.c
in2000.h
initio.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
initio.h
ipr.c ipr: Fix invalid array indexing for HRRQ 2015-07-30 10:38:47 -07:00
ipr.h ipr: Fix incorrect trace indexing 2015-07-30 10:38:00 -07:00
ips.c ips: remove pointless #warning 2015-06-02 17:24:54 -07:00
ips.h
iscsi_boot_sysfs.c
iscsi_tcp.c
iscsi_tcp.h
jazz_esp.c
Kconfig SCSI misc on 20150622 2015-06-23 15:55:44 -07:00
lasi700.c
libiscsi.c libiscsi: Fix host busy blocking during connection teardown 2015-08-12 10:21:20 -07:00
libiscsi_tcp.c
mac53c94.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
mac53c94.h
mac_esp.c
mac_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
Makefile snic: driver for Cisco SCSI HBA 2015-06-19 16:57:51 -07:00
megaraid.c
megaraid.h
mesh.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c
mvumi.h
ncr53c8xx.c
ncr53c8xx.h
NCR53c406a.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
NCR5380.c ncr5380: Harmonize jiffies conversion with msecs_to_jiffies 2015-03-09 10:45:26 -04:00
NCR5380.h
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
nsp32.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
nsp32.h
nsp32_debug.c
nsp32_io.h
osst.c
osst.h
osst_detect.h
osst_options.h
pas16.c
pas16.h
pmcraid.c
pmcraid.h
ppa.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
ppa.h
ps3rom.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.h
qlogicfas.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicfas408.c
qlogicfas408.h
qlogicpti.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c Move code that is used both by initiator and target drivers 2015-06-01 07:32:43 -07:00
scsi.h
scsi_common.c Move code that is used both by initiator and target drivers 2015-06-01 07:32:43 -07:00
scsi_debug.c drivers/scsi/scsi_debug.c: resolve sg buffer const-ness issue 2015-06-30 19:44:59 -07:00
scsi_devinfo.c SCSI: add 1024 max sectors black list flag 2015-04-27 09:38:06 -07:00
scsi_error.c scsi: fix memory leak with scsi-mq 2015-07-30 10:40:33 -07:00
scsi_ioctl.c
scsi_lib.c scsi: fix memory leak with scsi-mq 2015-07-30 10:40:33 -07:00
scsi_lib_dma.c
scsi_logging.c
scsi_logging.h
scsi_module.c
scsi_netlink.c
scsi_pm.c
scsi_priv.h
scsi_proc.c
scsi_sas_internal.h
scsi_scan.c Move code that is used both by initiator and target drivers 2015-06-01 07:32:43 -07:00
scsi_sysctl.c
scsi_sysfs.c scsi: fix host max depth checking for the 'queue_depth' sysfs interface 2015-07-16 16:09:53 +03:00
scsi_trace.c
scsi_transport_api.h
scsi_transport_fc.c scsi_transport_fc: Add support for 25Gbit speed 2015-04-10 07:40:32 -07:00
scsi_transport_iscsi.c iscsi: Fix iscsi endpoints leak 2015-06-02 17:26:32 -07:00
scsi_transport_sas.c
scsi_transport_spi.c
scsi_transport_srp.c IB/srp: Avoid using uninitialized variable 2015-07-14 13:20:09 -04:00
scsi_typedefs.h
scsicam.c
sd.c sd: Fix maximum I/O size for BLOCK_PC requests 2015-08-12 11:54:37 -07:00
sd.h
sd_dif.c sd: Fix missing ATO tag check 2015-04-16 10:37:12 -07:00
ses.c
sg.c sg_start_req(): use import_iovec() 2015-04-11 22:27:14 -04:00
sgiwd93.c
sim710.c
sni_53c710.c
sr.c
sr.h
sr_ioctl.c
sr_vendor.c
st.c st: null pointer dereference panic caused by use after kref_put by st_open 2015-07-16 15:32:32 +03:00
st.h st: implement tape statistics 2015-06-02 08:03:25 -07:00
st_options.h
stex.c
storvsc_drv.c storvsc: Set the SRB flags correctly when no data transfer is needed 2015-05-11 09:46:41 -07:00
sun3_scsi.c ncr5380: Drop owner assignment from platform_drivers 2015-03-09 07:18:14 -04:00
sun3_scsi.h
sun3_scsi_vme.c
sun3x_esp.c
sun_esp.c
sym53c416.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
sym53c416.h
t128.c
t128.h
u14-34f.c
ultrastor.c
ultrastor.h
virtio_scsi.c virtio/vhost: fixes for 4.2 2015-07-23 13:07:04 -07:00
vmw_pvscsi.c
vmw_pvscsi.h
wd33c93.c
wd33c93.h
wd719x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
wd719x.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
wd7000.c
xen-scsifront.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
zalon.c
zorro7xx.c