Guilherme G. Piccoli
de4ce2d1ad
genwqe: Take R/W permissions into account when dealing with memory pages ...
Currently we assume userspace pages are always writable when doing
memory pinning. This is not true, specially since userspace applications
may allocate their memory the way they want, we have no control over it.
If a read-only page is set for pinning, currently the driver fails due
to get_user_pages_fast() refusing to map read-only pages as writable.
This patch changes this behavior, by taking the permission flags of the
pages into account in both pinning/unpinning process, as well as in the
DMA data copy-back to userpace (which we shouldn't try to do blindly,
since it will fail in case of read-only-pages).
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-23 11:34:42 +02:00
misc: altera-stapl: drop Kconfig comment
2017-10-04 10:43:08 +02:00
drivers/misc/c2port/c2port-duramar2150.c: checking for NULL instead of IS_ERR()
2017-05-08 17:15:10 -07:00
cxl: Fix memory page not handled
2017-09-29 14:19:44 +10:00
eeprom: idt_89hpesx: Support both ACPI and OF probing
2017-08-31 18:49:41 +02:00
genwqe: Take R/W permissions into account when dealing with memory pages
2017-10-23 11:34:42 +02:00
misc: lis3lv02d: constify attribute_group structures.
2017-08-28 16:55:48 +02:00
tracing, mei: Remove unused trace event mei_pci_cfg_write
2017-10-20 15:17:44 +02:00
misc: mic: move to its own menu in Misc devices
2017-10-04 10:45:18 +02:00
sgi-gru: update to new mmu_notifier semantic
2017-08-31 16:13:00 -07:00
sgi-xp: Use designated initializers
2017-05-28 10:22:42 -07:00
misc: ti-st: constify attribute_group structures.
2017-08-28 16:55:48 +02:00
vmci: fix duplicated code for different branches
2017-08-28 16:55:50 +02:00
misc: apds990x: constify attribute_group structures.
2017-08-28 16:55:49 +02:00
misc: apds9802als: constify i2c_device_id
2017-08-28 16:55:49 +02:00
drivers/misc: (aspeed-lpc-snoop): Add ast2400 to compat
2017-07-17 17:23:16 +02:00
misc: bh1770glc: constify attribute_group structures.
2017-08-28 16:55:48 +02:00
MISC: add const to bin_attribute structures
2017-08-28 16:55:48 +02:00
scsi: ses: do not add a device to an enclosure if enclosure_add_links() fails.
2017-07-01 16:52:38 -04:00
misc: hmc6352: constify i2c_device_id
2017-08-28 16:55:49 +02:00
misc: hpilo: constify pci_device_id.
2017-08-28 16:55:48 +02:00
misc: ioc4: constify pci_device_id.
2017-08-28 16:55:48 +02:00
misc: isl29020: constify i2c_device_id
2017-08-28 16:55:49 +02:00
drivers/misc: add Aspeed LPC snoop driver
2017-06-03 19:15:18 +09:00
lkdtm: Add -fstack-protector-strong test
2017-08-15 12:27:35 -07:00
lkdtm: Add -fstack-protector-strong test
2017-08-15 12:27:35 -07:00
lkdtm: Constify the crashtypes table
2017-10-20 15:51:39 +02:00
lkdtm: fix spelling mistake: "incremeted" -> "incremented"
2017-08-28 17:47:11 +02:00
lkdtm: Provide more complete coverage for REFCOUNT tests
2017-07-26 14:38:03 -07:00
MISC: add const to bin_attribute structures
2017-08-28 16:55:48 +02:00
misc: pci_endpoint_test: Avoid triggering a BUG()
2017-10-04 10:39:28 +02:00
misc: sram-exec: Use aligned fncpy instead of memcpy
2017-05-18 17:37:52 +02:00
misc: Convert to using %pOF instead of full_name
2017-08-28 16:55:49 +02:00
misc: tifm: constify pci_device_id.
2017-08-28 16:55:48 +02:00
de4ce2d1ad