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ASoC: Fixes for v4.9

Browse Source 
The most important fix in here is a change which removes the #error
 making the topology API unusable as-is since we have recently discovered
 some production uses on Chromebooks so need to acknowledge that what
 we've got there now is an ABI.
 
 There's also a very big batch of driver specific fixes here which have
 kept on being delayed due to more arriving so the update is another of
 these bigger than I would like ones.  There is one especially big one in
 there, for the Qualcomm code which fixes simultaneous playback and
 capture which was broken during the merge window.  The diff for that is
 large because it moves blocks of code to different functions but it's
 functionally fairly simple and if it breaks it should have been very
 obvious in testing.
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Merge tag 'asoc-fix-v4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v4.9

The most important fix in here is a change which removes the #error
making the topology API unusable as-is since we have recently discovered
some production uses on Chromebooks so need to acknowledge that what
we've got there now is an ABI.

There's also a very big batch of driver specific fixes here which have
kept on being delayed due to more arriving so the update is another of
these bigger than I would like ones.  There is one especially big one in
there, for the Qualcomm code which fixes simultaneous playback and
capture which was broken during the merge window.  The diff for that is
large because it moves blocks of code to different functions but it's
functionally fairly simple and if it breaks it should have been very
obvious in testing.
This commit is contained in:
Takashi Iwai 2016-11-04 21:04:44 +01:00
commit f8f93bc9d2
578 changed files with 5574 additions and 3287 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
CREDITS
View File

@ -1864,10 +1864,11 @@ S: The Netherlands
N: Martin Kepplinger
E: martink@posteo.de
E: martin.kepplinger@theobroma-systems.com
E: martin.kepplinger@ginzinger.com
W: http://www.martinkepplinger.com
D: mma8452 accelerators iio driver
D: Kernel cleanups
D: pegasus_notetaker input driver
D: Kernel fixes and cleanups
S: Garnisonstraße 26
S: 4020 Linz
S: Austria

7
Documentation/ABI/testing/sysfs-class-cxl
View File

@ -220,8 +220,11 @@ What: /sys/class/cxl/<card>/reset
Date: October 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 will issue a PERST to card which may cause the card
to reload the FPGA depending on load_image_on_perst.
Writing 1 will issue a PERST to card provided there are no
contexts active on any one of the card AFUs. This may cause
the card to reload the FPGA depending on load_image_on_perst.
Writing -1 will do a force PERST irrespective of any active
contexts on the card AFUs.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/perst_reloads_same_image (not in a guest)

1
Documentation/device-mapper/dm-raid.txt
View File

@ -309,3 +309,4 @@ Version History
with a reshape in progress.
1.9.0 Add support for RAID level takeover/reshape/region size
and set size reduction.
1.9.1 Fix activation of existing RAID 4/10 mapped devices

16
Documentation/devicetree/bindings/clock/uniphier-clock.txt
View File

@ -24,7 +24,7 @@ Example:
reg = <0x61840000 0x4000>;
clock {
compatible = "socionext,uniphier-ld20-clock";
compatible = "socionext,uniphier-ld11-clock";
#clock-cells = <1>;
};
@ -43,8 +43,8 @@ Provided clocks:
21: USB3 ch1 PHY1
Media I/O (MIO) clock
---------------------
Media I/O (MIO) clock, SD clock
-------------------------------
Required properties:
- compatible: should be one of the following:
@ -52,10 +52,10 @@ Required properties:
"socionext,uniphier-ld4-mio-clock" - for LD4 SoC.
"socionext,uniphier-pro4-mio-clock" - for Pro4 SoC.
"socionext,uniphier-sld8-mio-clock" - for sLD8 SoC.
"socionext,uniphier-pro5-mio-clock" - for Pro5 SoC.
"socionext,uniphier-pxs2-mio-clock" - for PXs2/LD6b SoC.
"socionext,uniphier-pro5-sd-clock" - for Pro5 SoC.
"socionext,uniphier-pxs2-sd-clock" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-mio-clock" - for LD11 SoC.
"socionext,uniphier-ld20-mio-clock" - for LD20 SoC.
"socionext,uniphier-ld20-sd-clock" - for LD20 SoC.
- #clock-cells: should be 1.
Example:
@ -66,7 +66,7 @@ Example:
reg = <0x59810000 0x800>;
clock {
compatible = "socionext,uniphier-ld20-mio-clock";
compatible = "socionext,uniphier-ld11-mio-clock";
#clock-cells = <1>;
};
@ -112,7 +112,7 @@ Example:
reg = <0x59820000 0x200>;
clock {
compatible = "socionext,uniphier-ld20-peri-clock";
compatible = "socionext,uniphier-ld11-peri-clock";
#clock-cells = <1>;
};

23
Documentation/devicetree/bindings/ipmi/aspeed,ast2400-bt-bmc.txt Normal file
View File

@ -0,0 +1,23 @@
* Aspeed BT (Block Transfer) IPMI interface
The Aspeed SOCs (AST2400 and AST2500) are commonly used as BMCs
(BaseBoard Management Controllers) and the BT interface can be used to
perform in-band IPMI communication with their host.
Required properties:
- compatible : should be "aspeed,ast2400-bt-bmc"
- reg: physical address and size of the registers
Optional properties:
- interrupts: interrupt generated by the BT interface. without an
interrupt, the driver will operate in poll mode.
Example:
ibt@1e789140 {
compatible = "aspeed,ast2400-bt-bmc";
reg = <0x1e789140 0x18>;
interrupts = <8>;
};

0
Documentation/devicetree/bindings/ipmi.txt → Documentation/devicetree/bindings/ipmi/ipmi-smic.txt
View File

4
Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt
View File

@ -43,7 +43,9 @@ aspeed,ast2500-pinctrl, aspeed,g5-pinctrl:
GPID0 GPID2 GPIE0 I2C10 I2C11 I2C12 I2C13 I2C14 I2C3 I2C4 I2C5 I2C6 I2C7 I2C8
I2C9 MAC1LINK MDIO1 MDIO2 OSCCLK PEWAKE PWM0 PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 PWM7
RGMII1 RGMII2 RMII1 RMII2 SD1 SPI1 TIMER4 TIMER5 TIMER6 TIMER7 TIMER8
RGMII1 RGMII2 RMII1 RMII2 SD1 SPI1 SPI1DEBUG SPI1PASSTHRU TIMER4 TIMER5 TIMER6
TIMER7 TIMER8 VGABIOSROM
Examples:

62
Documentation/devicetree/bindings/reset/uniphier-reset.txt
View File

@ -6,25 +6,25 @@ System reset
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-sld3-reset" - for PH1-sLD3 SoC.
"socionext,uniphier-ld4-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-reset" - for PH1-LD20 SoC.
"socionext,uniphier-sld3-reset" - for sLD3 SoC.
"socionext,uniphier-ld4-reset" - for LD4 SoC.
"socionext,uniphier-pro4-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-reset" - for LD11 SoC.
"socionext,uniphier-ld20-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
sysctrl@61840000 {
compatible = "socionext,uniphier-ld20-sysctrl",
compatible = "socionext,uniphier-ld11-sysctrl",
"simple-mfd", "syscon";
reg = <0x61840000 0x4000>;
reset {
compatible = "socionext,uniphier-ld20-reset";
compatible = "socionext,uniphier-ld11-reset";
#reset-cells = <1>;
};
@ -32,30 +32,30 @@ Example:
};
Media I/O (MIO) reset
---------------------
Media I/O (MIO) reset, SD reset
-------------------------------
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-sld3-mio-reset" - for PH1-sLD3 SoC.
"socionext,uniphier-ld4-mio-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-mio-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-mio-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-mio-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-mio-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-mio-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-mio-reset" - for PH1-LD20 SoC.
"socionext,uniphier-sld3-mio-reset" - for sLD3 SoC.
"socionext,uniphier-ld4-mio-reset" - for LD4 SoC.
"socionext,uniphier-pro4-mio-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-mio-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-sd-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-sd-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-mio-reset" - for LD11 SoC.
"socionext,uniphier-ld20-sd-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
mioctrl@59810000 {
compatible = "socionext,uniphier-ld20-mioctrl",
compatible = "socionext,uniphier-ld11-mioctrl",
"simple-mfd", "syscon";
reg = <0x59810000 0x800>;
reset {
compatible = "socionext,uniphier-ld20-mio-reset";
compatible = "socionext,uniphier-ld11-mio-reset";
#reset-cells = <1>;
};
@ -68,24 +68,24 @@ Peripheral reset
Required properties:
- compatible: should be one of the following:
"socionext,uniphier-ld4-peri-reset" - for PH1-LD4 SoC.
"socionext,uniphier-pro4-peri-reset" - for PH1-Pro4 SoC.
"socionext,uniphier-sld8-peri-reset" - for PH1-sLD8 SoC.
"socionext,uniphier-pro5-peri-reset" - for PH1-Pro5 SoC.
"socionext,uniphier-pxs2-peri-reset" - for ProXstream2/PH1-LD6b SoC.
"socionext,uniphier-ld11-peri-reset" - for PH1-LD11 SoC.
"socionext,uniphier-ld20-peri-reset" - for PH1-LD20 SoC.
"socionext,uniphier-ld4-peri-reset" - for LD4 SoC.
"socionext,uniphier-pro4-peri-reset" - for Pro4 SoC.
"socionext,uniphier-sld8-peri-reset" - for sLD8 SoC.
"socionext,uniphier-pro5-peri-reset" - for Pro5 SoC.
"socionext,uniphier-pxs2-peri-reset" - for PXs2/LD6b SoC.
"socionext,uniphier-ld11-peri-reset" - for LD11 SoC.
"socionext,uniphier-ld20-peri-reset" - for LD20 SoC.
- #reset-cells: should be 1.
Example:
perictrl@59820000 {
compatible = "socionext,uniphier-ld20-perictrl",
compatible = "socionext,uniphier-ld11-perictrl",
"simple-mfd", "syscon";
reg = <0x59820000 0x200>;
reset {
compatible = "socionext,uniphier-ld20-peri-reset";
compatible = "socionext,uniphier-ld11-peri-reset";
#reset-cells = <1>;
};

4
Documentation/devicetree/bindings/serial/cdns,uart.txt
View File

@ -1,7 +1,9 @@
Binding for Cadence UART Controller
Required properties:
- compatible : should be "cdns,uart-r1p8", or "xlnx,xuartps"
- compatible :
Use "xlnx,xuartps","cdns,uart-r1p8" for Zynq-7xxx SoC.
Use "xlnx,zynqmp-uart","cdns,uart-r1p12" for Zynq Ultrascale+ MPSoC.
- reg: Should contain UART controller registers location and length.
- interrupts: Should contain UART controller interrupts.
- clocks: Must contain phandles to the UART clocks

8
Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
View File

@ -9,6 +9,14 @@ Required properties:
- "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
- "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
- "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
- "renesas,scif-r8a7743" for R8A7743 (RZ/G1M) SCIF compatible UART.
- "renesas,scifa-r8a7743" for R8A7743 (RZ/G1M) SCIFA compatible UART.
- "renesas,scifb-r8a7743" for R8A7743 (RZ/G1M) SCIFB compatible UART.
- "renesas,hscif-r8a7743" for R8A7743 (RZ/G1M) HSCIF compatible UART.
- "renesas,scif-r8a7745" for R8A7745 (RZ/G1E) SCIF compatible UART.
- "renesas,scifa-r8a7745" for R8A7745 (RZ/G1E) SCIFA compatible UART.
- "renesas,scifb-r8a7745" for R8A7745 (RZ/G1E) SCIFB compatible UART.
- "renesas,hscif-r8a7745" for R8A7745 (RZ/G1E) HSCIF compatible UART.
- "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
- "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
- "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.

24
Documentation/devicetree/bindings/timer/jcore,pit.txt Normal file
View File

@ -0,0 +1,24 @@
J-Core Programmable Interval Timer and Clocksource
Required properties:
- compatible: Must be "jcore,pit".
- reg: Memory region(s) for timer/clocksource registers. For SMP,
there should be one region per cpu, indexed by the sequential,
zero-based hardware cpu number.
- interrupts: An interrupt to assign for the timer. The actual pit
core is integrated with the aic and allows the timer interrupt
assignment to be programmed by software, but this property is
required in order to reserve an interrupt number that doesn't
conflict with other devices.
Example:
timer@200 {
compatible = "jcore,pit";
reg = < 0x200 0x30 0x500 0x30 >;
interrupts = < 0x48 >;
};

5
Documentation/devicetree/bindings/usb/dwc2.txt
View File

@ -28,10 +28,7 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties
- g-use-dma: enable dma usage in gadget driver.
- g-rx-fifo-size: size of rx fifo size in gadget mode.
- g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode.
Deprecated properties:
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0)
in gadget mode.
- g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode.
Example:

26
Documentation/filesystems/proc.txt
View File

@ -395,32 +395,6 @@ is not associated with a file:
or if empty, the mapping is anonymous.
The /proc/PID/task/TID/maps is a view of the virtual memory from the viewpoint
of the individual tasks of a process. In this file you will see a mapping marked
as [stack] if that task sees it as a stack. Hence, for the example above, the
task-level map, i.e. /proc/PID/task/TID/maps for thread 1001 will look like this:
08048000-08049000 r-xp 00000000 03:00 8312 /opt/test
08049000-0804a000 rw-p 00001000 03:00 8312 /opt/test
0804a000-0806b000 rw-p 00000000 00:00 0 [heap]
a7cb1000-a7cb2000 ---p 00000000 00:00 0
a7cb2000-a7eb2000 rw-p 00000000 00:00 0
a7eb2000-a7eb3000 ---p 00000000 00:00 0
a7eb3000-a7ed5000 rw-p 00000000 00:00 0 [stack]
a7ed5000-a8008000 r-xp 00000000 03:00 4222 /lib/libc.so.6
a8008000-a800a000 r--p 00133000 03:00 4222 /lib/libc.so.6
a800a000-a800b000 rw-p 00135000 03:00 4222 /lib/libc.so.6
a800b000-a800e000 rw-p 00000000 00:00 0
a800e000-a8022000 r-xp 00000000 03:00 14462 /lib/libpthread.so.0
a8022000-a8023000 r--p 00013000 03:00 14462 /lib/libpthread.so.0
a8023000-a8024000 rw-p 00014000 03:00 14462 /lib/libpthread.so.0
a8024000-a8027000 rw-p 00000000 00:00 0
a8027000-a8043000 r-xp 00000000 03:00 8317 /lib/ld-linux.so.2
a8043000-a8044000 r--p 0001b000 03:00 8317 /lib/ld-linux.so.2
a8044000-a8045000 rw-p 0001c000 03:00 8317 /lib/ld-linux.so.2
aff35000-aff4a000 rw-p 00000000 00:00 0
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
The /proc/PID/smaps is an extension based on maps, showing the memory
consumption for each of the process's mappings. For each of mappings there
is a series of lines such as the following:

11
Documentation/gpio/board.txt
View File

@ -6,7 +6,7 @@ Note that it only applies to the new descriptor-based interface. For a
description of the deprecated integer-based GPIO interface please refer to
gpio-legacy.txt (actually, there is no real mapping possible with the old
interface; you just fetch an integer from somewhere and request the
corresponding GPIO.
corresponding GPIO).
All platforms can enable the GPIO library, but if the platform strictly
requires GPIO functionality to be present, it needs to select GPIOLIB from its
@ -162,6 +162,9 @@ The driver controlling "foo.0" will then be able to obtain its GPIOs as follows:
Since the "led" GPIOs are mapped as active-high, this example will switch their
signals to 1, i.e. enabling the LEDs. And for the "power" GPIO, which is mapped
as active-low, its actual signal will be 0 after this code. Contrary to the legacy
integer GPIO interface, the active-low property is handled during mapping and is
thus transparent to GPIO consumers.
as active-low, its actual signal will be 0 after this code. Contrary to the
legacy integer GPIO interface, the active-low property is handled during
mapping and is thus transparent to GPIO consumers.
A set of functions such as gpiod_set_value() is available to work with
the new descriptor-oriented interface.

15
MAINTAINERS
View File

@ -1442,6 +1442,7 @@ F: drivers/cpufreq/mvebu-cpufreq.c
F: arch/arm/configs/mvebu_*_defconfig
ARM/Marvell Berlin SoC support
M: Jisheng Zhang <jszhang@marvell.com>
M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
@ -4620,8 +4621,9 @@ F: sound/usb/misc/ua101.c
EXTENSIBLE FIRMWARE INTERFACE (EFI)
M: Matt Fleming <matt@codeblueprint.co.uk>
M: Ard Biesheuvel <ard.biesheuvel@linaro.org>
L: linux-efi@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git
S: Maintained
F: Documentation/efi-stub.txt
F: arch/ia64/kernel/efi.c
@ -5286,6 +5288,12 @@ M: Joe Perches <joe@perches.com>
S: Maintained
F: scripts/get_maintainer.pl
GENWQE (IBM Generic Workqueue Card)
M: Frank Haverkamp <haver@linux.vnet.ibm.com>
M: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
S: Supported
F: drivers/misc/genwqe/
GFS2 FILE SYSTEM
M: Steven Whitehouse <swhiteho@redhat.com>
M: Bob Peterson <rpeterso@redhat.com>
@ -8099,6 +8107,7 @@ S: Maintained
F: drivers/media/dvb-frontends/mn88473*
MODULE SUPPORT
M: Jessica Yu <jeyu@redhat.com>
M: Rusty Russell <rusty@rustcorp.com.au>
S: Maintained
F: include/linux/module.h
@ -8212,7 +8221,7 @@ F: include/linux/mfd/
MULTIMEDIA CARD (MMC), SECURE DIGITAL (SD) AND SDIO SUBSYSTEM
M: Ulf Hansson <ulf.hansson@linaro.org>
L: linux-mmc@vger.kernel.org
T: git git://git.linaro.org/people/ulf.hansson/mmc.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
S: Maintained
F: Documentation/devicetree/bindings/mmc/
F: drivers/mmc/
@ -9299,7 +9308,7 @@ S: Maintained
F: drivers/pci/host/*designware*
PCI DRIVER FOR SYNOPSYS PROTOTYPING DEVICE
M: Joao Pinto <jpinto@synopsys.com>
M: Jose Abreu <Jose.Abreu@synopsys.com>
L: linux-pci@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/pci/designware-pcie.txt

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 4
PATCHLEVEL = 9
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc3
NAME = Psychotic Stoned Sheep
# *DOCUMENTATION*

9
arch/alpha/kernel/ptrace.c
View File

@ -157,14 +157,16 @@ put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
static inline int
read_int(struct task_struct *task, unsigned long addr, int * data)
{
int copied = access_process_vm(task, addr, data, sizeof(int), 0);
int copied = access_process_vm(task, addr, data, sizeof(int),
FOLL_FORCE);
return (copied == sizeof(int)) ? 0 : -EIO;
}
static inline int
write_int(struct task_struct *task, unsigned long addr, int data)
{
int copied = access_process_vm(task, addr, &data, sizeof(int), 1);
int copied = access_process_vm(task, addr, &data, sizeof(int),
FOLL_FORCE | FOLL_WRITE);
return (copied == sizeof(int)) ? 0 : -EIO;
}
@ -281,7 +283,8 @@ long arch_ptrace(struct task_struct *child, long request,
/* When I and D space are separate, these will need to be fixed. */
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA:
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
copied = access_process_vm(child, addr, &tmp, sizeof(tmp),
FOLL_FORCE);
ret = -EIO;
if (copied != sizeof(tmp))
break;

27
arch/arc/Kconfig
View File

@ -41,6 +41,8 @@ config ARC
select PERF_USE_VMALLOC
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_LZMA
config MIGHT_HAVE_PCI
bool
@ -186,14 +188,6 @@ if SMP
config ARC_HAS_COH_CACHES
def_bool n
config ARC_MCIP
bool "ARConnect Multicore IP (MCIP) Support "
depends on ISA_ARCV2
help
This IP block enables SMP in ARC-HS38 cores.
It provides for cross-core interrupts, multi-core debug
hardware semaphores, shared memory,....
config NR_CPUS
int "Maximum number of CPUs (2-4096)"
range 2 4096
@ -211,6 +205,15 @@ config ARC_SMP_HALT_ON_RESET
endif #SMP
config ARC_MCIP
bool "ARConnect Multicore IP (MCIP) Support "
depends on ISA_ARCV2
default y if SMP
help
This IP block enables SMP in ARC-HS38 cores.
It provides for cross-core interrupts, multi-core debug
hardware semaphores, shared memory,....
menuconfig ARC_CACHE
bool "Enable Cache Support"
default y
@ -537,14 +540,6 @@ config ARC_DBG_TLB_PARANOIA
bool "Paranoia Checks in Low Level TLB Handlers"
default n
config ARC_DBG_TLB_MISS_COUNT
bool "Profile TLB Misses"
default n
select DEBUG_FS
help
Counts number of I and D TLB Misses and exports them via Debugfs
The counters can be cleared via Debugfs as well
endif
config ARC_UBOOT_SUPPORT

3
arch/arc/Makefile
View File

@ -50,9 +50,6 @@ atleast_gcc44 := $(call cc-ifversion, -ge, 0404, y)
cflags-$(atleast_gcc44) += -fsection-anchors
cflags-$(CONFIG_ARC_HAS_LLSC) += -mlock
cflags-$(CONFIG_ARC_HAS_SWAPE) += -mswape
ifdef CONFIG_ISA_ARCV2
ifndef CONFIG_ARC_HAS_LL64

16
arch/arc/boot/Makefile
View File

@ -14,9 +14,15 @@ UIMAGE_ENTRYADDR = $(LINUX_START_TEXT)
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
suffix-$(CONFIG_KERNEL_LZMA) := lzma
targets += uImage uImage.bin uImage.gz
extra-y += vmlinux.bin vmlinux.bin.gz
targets += uImage
targets += uImage.bin
targets += uImage.gz
targets += uImage.lzma
extra-y += vmlinux.bin
extra-y += vmlinux.bin.gz
extra-y += vmlinux.bin.lzma
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
@ -24,12 +30,18 @@ $(obj)/vmlinux.bin: vmlinux FORCE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
$(call if_changed,lzma)
$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
$(call if_changed,uimage,none)
$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
$(call if_changed,uimage,gzip)
$(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma FORCE
$(call if_changed,uimage,lzma)
$(obj)/uImage: $(obj)/uImage.$(suffix-y)
@ln -sf $(notdir $<) $@
@echo ' Image $@ is ready'

3
arch/arc/include/asm/arcregs.h
View File

@ -349,10 +349,11 @@ struct cpuinfo_arc {
struct cpuinfo_arc_bpu bpu;
struct bcr_identity core;
struct bcr_isa isa;
const char *details, *name;
unsigned int vec_base;
struct cpuinfo_arc_ccm iccm, dccm;
struct {
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, pad1:3,
unsigned int swap:1, norm:1, minmax:1, barrel:1, crc:1, swape:1, pad1:2,
fpu_sp:1, fpu_dp:1, pad2:6,
debug:1, ap:1, smart:1, rtt:1, pad3:4,
timer0:1, timer1:1, rtc:1, gfrc:1, pad4:4;

2
arch/arc/include/asm/cache.h
View File

@ -53,7 +53,7 @@ extern void arc_cache_init(void);
extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
extern void read_decode_cache_bcr(void);
extern int ioc_exists;
extern int ioc_enable;
extern unsigned long perip_base, perip_end;
#endif /* !__ASSEMBLY__ */

2
arch/arc/include/asm/elf.h
View File

@ -54,7 +54,7 @@ extern int elf_check_arch(const struct elf32_hdr *);
* the loader. We need to make sure that it is out of the way of the program
* that it will "exec", and that there is sufficient room for the brk.
*/
#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
#define ELF_ET_DYN_BASE (2UL * TASK_SIZE / 3)
/*
* When the program starts, a1 contains a pointer to a function to be

16
arch/arc/include/asm/mcip.h
View File

@ -55,6 +55,22 @@ struct mcip_cmd {
#define IDU_M_DISTRI_DEST 0x2
};
struct mcip_bcr {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:8,
idu:1, llm:1, num_cores:6,
iocoh:1, gfrc:1, dbg:1, pad2:1,
msg:1, sem:1, ipi:1, pad:1,
ver:8;
#else
unsigned int ver:8,
pad:1, ipi:1, sem:1, msg:1,
pad2:1, dbg:1, gfrc:1, iocoh:1,
num_cores:6, llm:1, idu:1,
pad3:8;
#endif
};
/*
* MCIP programming model
*

1
arch/arc/include/asm/module.h
View File

@ -18,6 +18,7 @@
struct mod_arch_specific {
void *unw_info;
int unw_sec_idx;
const char *secstr;
};
#endif

6
arch/arc/include/asm/setup.h
View File

@ -27,11 +27,6 @@ struct id_to_str {
const char *str;
};
struct cpuinfo_data {
struct id_to_str info;
int up_range;
};
extern int root_mountflags, end_mem;
void setup_processor(void);
@ -43,5 +38,6 @@ void __init setup_arch_memory(void);
#define IS_USED_RUN(v) ((v) ? "" : "(not used) ")
#define IS_USED_CFG(cfg) IS_USED_RUN(IS_ENABLED(cfg))
#define IS_AVAIL2(v, s, cfg) IS_AVAIL1(v, s), IS_AVAIL1(v, IS_USED_CFG(cfg))
#define IS_AVAIL3(v, v2, s) IS_AVAIL1(v, s), IS_AVAIL1(v, IS_DISABLED_RUN(v2))
#endif /* __ASMARC_SETUP_H */

1
arch/arc/include/asm/syscalls.h
View File

@ -17,6 +17,7 @@ int sys_clone_wrapper(int, int, int, int, int);
int sys_cacheflush(uint32_t, uint32_t uint32_t);
int sys_arc_settls(void *);
int sys_arc_gettls(void);
int sys_arc_usr_cmpxchg(int *, int, int);
#include <asm-generic/syscalls.h>

9
arch/arc/include/uapi/asm/unistd.h
View File

@ -27,18 +27,19 @@
#define NR_syscalls __NR_syscalls
/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
/* ARC specific syscall */
#define __NR_cacheflush (__NR_arch_specific_syscall + 0)
#define __NR_arc_settls (__NR_arch_specific_syscall + 1)
#define __NR_arc_gettls (__NR_arch_specific_syscall + 2)
#define __NR_arc_usr_cmpxchg (__NR_arch_specific_syscall + 4)
__SYSCALL(__NR_cacheflush, sys_cacheflush)
__SYSCALL(__NR_arc_settls, sys_arc_settls)
__SYSCALL(__NR_arc_gettls, sys_arc_gettls)
/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */
#define __NR_sysfs (__NR_arch_specific_syscall + 3)
__SYSCALL(__NR_arc_usr_cmpxchg, sys_arc_usr_cmpxchg)
__SYSCALL(__NR_sysfs, sys_sysfs)
#undef __SYSCALL

31
arch/arc/kernel/mcip.c
View File

@ -15,11 +15,12 @@
#include <asm/mcip.h>
#include <asm/setup.h>
static char smp_cpuinfo_buf[128];
static int idu_detected;
static DEFINE_RAW_SPINLOCK(mcip_lock);
#ifdef CONFIG_SMP
static char smp_cpuinfo_buf[128];
static void mcip_setup_per_cpu(int cpu)
{
smp_ipi_irq_setup(cpu, IPI_IRQ);
@ -86,21 +87,7 @@ static void mcip_ipi_clear(int irq)
static void mcip_probe_n_setup(void)
{
struct mcip_bcr {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int pad3:8,
idu:1, llm:1, num_cores:6,
iocoh:1, gfrc:1, dbg:1, pad2:1,
msg:1, sem:1, ipi:1, pad:1,
ver:8;
#else
unsigned int ver:8,
pad:1, ipi:1, sem:1, msg:1,
pad2:1, dbg:1, gfrc:1, iocoh:1,
num_cores:6, llm:1, idu:1,
pad3:8;
#endif
} mp;
struct mcip_bcr mp;
READ_BCR(ARC_REG_MCIP_BCR, mp);
@ -114,7 +101,6 @@ static void mcip_probe_n_setup(void)
IS_AVAIL1(mp.gfrc, "GFRC"));
cpuinfo_arc700[0].extn.gfrc = mp.gfrc;
idu_detected = mp.idu;
if (mp.dbg) {
__mcip_cmd_data(CMD_DEBUG_SET_SELECT, 0, 0xf);
@ -130,6 +116,8 @@ struct plat_smp_ops plat_smp_ops = {
.ipi_clear = mcip_ipi_clear,
};
#endif
/***************************************************************************
* ARCv2 Interrupt Distribution Unit (IDU)
*
@ -295,8 +283,11 @@ idu_of_init(struct device_node *intc, struct device_node *parent)
/* Read IDU BCR to confirm nr_irqs */
int nr_irqs = of_irq_count(intc);
int i, irq;
struct mcip_bcr mp;
if (!idu_detected)
READ_BCR(ARC_REG_MCIP_BCR, mp);
if (!mp.idu)
panic("IDU not detected, but DeviceTree using it");
pr_info("MCIP: IDU referenced from Devicetree %d irqs\n", nr_irqs);

51
arch/arc/kernel/module.c
View File

@ -30,17 +30,9 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
char *secstr, struct module *mod)
{
#ifdef CONFIG_ARC_DW2_UNWIND
int i;
mod->arch.unw_sec_idx = 0;
mod->arch.unw_info = NULL;
for (i = 1; i < hdr->e_shnum; i++) {
if (strcmp(secstr+sechdrs[i].sh_name, ".eh_frame") == 0) {
mod->arch.unw_sec_idx = i;
break;
}
}
mod->arch.secstr = secstr;
#endif
return 0;
}
@ -59,29 +51,33 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
unsigned int relsec, /* sec index for relo sec */
struct module *module)
{
int i, n;
int i, n, relo_type;
Elf32_Rela *rel_entry = (void *)sechdrs[relsec].sh_addr;
Elf32_Sym *sym_entry, *sym_sec;
Elf32_Addr relocation;
Elf32_Addr location;
Elf32_Addr sec_to_patch;
int relo_type;
Elf32_Addr relocation, location, tgt_addr;
unsigned int tgtsec;
sec_to_patch = sechdrs[sechdrs[relsec].sh_info].sh_addr;
/*
* @relsec has relocations e.g. .rela.init.text
* @tgtsec is section to patch e.g. .init.text
*/
tgtsec = sechdrs[relsec].sh_info;
tgt_addr = sechdrs[tgtsec].sh_addr;
sym_sec = (Elf32_Sym *) sechdrs[symindex].sh_addr;
n = sechdrs[relsec].sh_size / sizeof(*rel_entry);
pr_debug("\n========== Module Sym reloc ===========================\n");
pr_debug("Section to fixup %x\n", sec_to_patch);
pr_debug("\nSection to fixup %s @%x\n",
module->arch.secstr + sechdrs[tgtsec].sh_name, tgt_addr);
pr_debug("=========================================================\n");
pr_debug("rela->r_off | rela->addend | sym->st_value | ADDR | VALUE\n");
pr_debug("r_off\tr_add\tst_value ADDRESS VALUE\n");
pr_debug("=========================================================\n");
/* Loop thru entries in relocation section */
for (i = 0; i < n; i++) {
const char *s;
/* This is where to make the change */
location = sec_to_patch + rel_entry[i].r_offset;
location = tgt_addr + rel_entry[i].r_offset;
/* This is the symbol it is referring to. Note that all
undefined symbols have been resolved. */
@ -89,10 +85,15 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
relocation = sym_entry->st_value + rel_entry[i].r_addend;
pr_debug("\t%x\t\t%x\t\t%x %x %x [%s]\n",
rel_entry[i].r_offset, rel_entry[i].r_addend,
sym_entry->st_value, location, relocation,
strtab + sym_entry->st_name);
if (sym_entry->st_name == 0 && ELF_ST_TYPE (sym_entry->st_info) == STT_SECTION) {
s = module->arch.secstr + sechdrs[sym_entry->st_shndx].sh_name;
} else {
s = strtab + sym_entry->st_name;
}
pr_debug(" %x\t%x\t%x %x %x [%s]\n",
rel_entry[i].r_offset, rel_entry[i].r_addend,
sym_entry->st_value, location, relocation, s);
/* This assumes modules are built with -mlong-calls
* so any branches/jumps are absolute 32 bit jmps
@ -111,6 +112,10 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
goto relo_err;
}
if (strcmp(module->arch.secstr+sechdrs[tgtsec].sh_name, ".eh_frame") == 0)
module->arch.unw_sec_idx = tgtsec;
return 0;
relo_err:

33
arch/arc/kernel/process.c
View File

@ -41,6 +41,39 @@ SYSCALL_DEFINE0(arc_gettls)
return task_thread_info(current)->thr_ptr;
}
SYSCALL_DEFINE3(arc_usr_cmpxchg, int *, uaddr, int, expected, int, new)
{
int uval;
int ret;
/*
* This is only for old cores lacking LLOCK/SCOND, which by defintion
* can't possibly be SMP. Thus doesn't need to be SMP safe.
* And this also helps reduce the overhead for serializing in
* the UP case
*/
WARN_ON_ONCE(IS_ENABLED(CONFIG_SMP));
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
preempt_disable();
ret = __get_user(uval, uaddr);
if (ret)
goto done;
if (uval != expected)
ret = -EAGAIN;
else
ret = __put_user(new, uaddr);
done:
preempt_enable();
return ret;
}
void arch_cpu_idle(void)
{
/* sleep, but enable all interrupts before committing */

115
arch/arc/kernel/setup.c
View File

@ -40,6 +40,29 @@ struct task_struct *_current_task[NR_CPUS]; /* For stack switching */
struct cpuinfo_arc cpuinfo_arc700[NR_CPUS];
static const struct id_to_str arc_cpu_rel[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ 0x34, "R4.10"},
{ 0x35, "R4.11"},
#else
{ 0x51, "R2.0" },
{ 0x52, "R2.1" },
{ 0x53, "R3.0" },
#endif
{ 0x00, NULL }
};
static const struct id_to_str arc_cpu_nm[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ 0x20, "ARC 600" },
{ 0x30, "ARC 770" }, /* 750 identified seperately */
#else
{ 0x40, "ARC EM" },
{ 0x50, "ARC HS38" },
#endif
{ 0x00, "Unknown" }
};
static void read_decode_ccm_bcr(struct cpuinfo_arc *cpu)
{
if (is_isa_arcompact()) {
@ -92,11 +115,26 @@ static void read_arc_build_cfg_regs(void)
struct bcr_timer timer;
struct bcr_generic bcr;
struct cpuinfo_arc *cpu = &cpuinfo_arc700[smp_processor_id()];
const struct id_to_str *tbl;
FIX_PTR(cpu);
READ_BCR(AUX_IDENTITY, cpu->core);
READ_BCR(ARC_REG_ISA_CFG_BCR, cpu->isa);
for (tbl = &arc_cpu_rel[0]; tbl->id != 0; tbl++) {
if (cpu->core.family == tbl->id) {
cpu->details = tbl->str;
break;
}
}
for (tbl = &arc_cpu_nm[0]; tbl->id != 0; tbl++) {
if ((cpu->core.family & 0xF0) == tbl->id)
break;
}
cpu->name = tbl->str;
READ_BCR(ARC_REG_TIMERS_BCR, timer);
cpu->extn.timer0 = timer.t0;
cpu->extn.timer1 = timer.t1;
@ -111,6 +149,9 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.swap = read_aux_reg(ARC_REG_SWAP_BCR) ? 1 : 0; /* 1,3 */
cpu->extn.crc = read_aux_reg(ARC_REG_CRC_BCR) ? 1 : 0;
cpu->extn.minmax = read_aux_reg(ARC_REG_MIXMAX_BCR) > 1 ? 1 : 0; /* 2 */
cpu->extn.swape = (cpu->core.family >= 0x34) ? 1 :
IS_ENABLED(CONFIG_ARC_HAS_SWAPE);
READ_BCR(ARC_REG_XY_MEM_BCR, cpu->extn_xymem);
/* Read CCM BCRs for boot reporting even if not enabled in Kconfig */
@ -160,64 +201,38 @@ static void read_arc_build_cfg_regs(void)
cpu->extn.rtt = bcr.ver ? 1 : 0;
cpu->extn.debug = cpu->extn.ap | cpu->extn.smart | cpu->extn.rtt;
/* some hacks for lack of feature BCR info in old ARC700 cores */
if (is_isa_arcompact()) {
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
cpu->isa.atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
else
cpu->isa.atomic = cpu->isa.atomic1;
cpu->isa.be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
/* there's no direct way to distinguish 750 vs. 770 */
if (unlikely(cpu->core.family < 0x34 || cpu->mmu.ver < 3))
cpu->name = "ARC750";
}
}
static const struct cpuinfo_data arc_cpu_tbl[] = {
#ifdef CONFIG_ISA_ARCOMPACT
{ {0x20, "ARC 600" }, 0x2F},
{ {0x30, "ARC 700" }, 0x33},
{ {0x34, "ARC 700 R4.10"}, 0x34},
{ {0x35, "ARC 700 R4.11"}, 0x35},
#else
{ {0x50, "ARC HS38 R2.0"}, 0x51},
{ {0x52, "ARC HS38 R2.1"}, 0x52},
{ {0x53, "ARC HS38 R3.0"}, 0x53},
#endif
{ {0x00, NULL } }
};
static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
{
struct cpuinfo_arc *cpu = &cpuinfo_arc700[cpu_id];
struct bcr_identity *core = &cpu->core;
const struct cpuinfo_data *tbl;
char *isa_nm;
int i, be, atomic;
int n = 0;
int i, n = 0;
FIX_PTR(cpu);
if (is_isa_arcompact()) {
isa_nm = "ARCompact";
be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN);
atomic = cpu->isa.atomic1;
if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */
atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC);
} else {
isa_nm = "ARCv2";
be = cpu->isa.be;
atomic = cpu->isa.atomic;
}
n += scnprintf(buf + n, len - n,
"\nIDENTITY\t: ARCVER [%#02x] ARCNUM [%#02x] CHIPID [%#4x]\n",
core->family, core->cpu_id, core->chip_id);
for (tbl = &arc_cpu_tbl[0]; tbl->info.id != 0; tbl++) {
if ((core->family >= tbl->info.id) &&
(core->family <= tbl->up_range)) {
n += scnprintf(buf + n, len - n,
"processor [%d]\t: %s (%s ISA) %s\n",
cpu_id, tbl->info.str, isa_nm,
IS_AVAIL1(be, "[Big-Endian]"));
break;
}
}
if (tbl->info.id == 0)
n += scnprintf(buf + n, len - n, "UNKNOWN ARC Processor\n");
n += scnprintf(buf + n, len - n, "processor [%d]\t: %s %s (%s ISA) %s\n",
cpu_id, cpu->name, cpu->details,
is_isa_arcompact() ? "ARCompact" : "ARCv2",
IS_AVAIL1(cpu->isa.be, "[Big-Endian]"));
n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ",
IS_AVAIL1(cpu->extn.timer0, "Timer0 "),
@ -226,7 +241,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
CONFIG_ARC_HAS_RTC));
n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s",
IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
IS_AVAIL2(cpu->isa.atomic, "atomic ", CONFIG_ARC_HAS_LLSC),
IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64),
IS_AVAIL1(cpu->isa.unalign, "unalign (not used)"));
@ -253,7 +268,7 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len)
IS_AVAIL1(cpu->extn.swap, "swap "),
IS_AVAIL1(cpu->extn.minmax, "minmax "),
IS_AVAIL1(cpu->extn.crc, "crc "),
IS_AVAIL2(1, "swape", CONFIG_ARC_HAS_SWAPE));
IS_AVAIL2(cpu->extn.swape, "swape", CONFIG_ARC_HAS_SWAPE));
if (cpu->bpu.ver)
n += scnprintf(buf + n, len - n,
@ -272,9 +287,7 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
FIX_PTR(cpu);
n += scnprintf(buf + n, len - n,
"Vector Table\t: %#x\nPeripherals\t: %#lx:%#lx\n",
cpu->vec_base, perip_base, perip_end);
n += scnprintf(buf + n, len - n, "Vector Table\t: %#x\n", cpu->vec_base);
if (cpu->extn.fpu_sp || cpu->extn.fpu_dp)
n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n",
@ -507,7 +520,7 @@ static void *c_start(struct seq_file *m, loff_t *pos)
* way to pass it w/o having to kmalloc/free a 2 byte string.
* Encode cpu-id as 0xFFcccc, which is decoded by show routine.
*/
return *pos < num_possible_cpus() ? cpu_to_ptr(*pos) : NULL;
return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)

110
arch/arc/kernel/troubleshoot.c
View File

@ -237,113 +237,3 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
if (!user_mode(regs))
show_stacktrace(current, regs);
}
#ifdef CONFIG_DEBUG_FS
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/pagemap.h>
#include <linux/init.h>
#include <linux/namei.h>
#include <linux/debugfs.h>
static struct dentry *test_dentry;
static struct dentry *test_dir;
static struct dentry *test_u32_dentry;
static u32 clr_on_read = 1;
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
u32 numitlb, numdtlb, num_pte_not_present;
static int fill_display_data(char *kbuf)
{
size_t num = 0;
num += sprintf(kbuf + num, "I-TLB Miss %x\n", numitlb);
num += sprintf(kbuf + num, "D-TLB Miss %x\n", numdtlb);
num += sprintf(kbuf + num, "PTE not present %x\n", num_pte_not_present);
if (clr_on_read)
numitlb = numdtlb = num_pte_not_present = 0;
return num;
}
static int tlb_stats_open(struct inode *inode, struct file *file)
{
file->private_data = (void *)__get_free_page(GFP_KERNEL);
return 0;
}
/* called on user read(): display the counters */
static ssize_t tlb_stats_output(struct file *file, /* file descriptor */
char __user *user_buf, /* user buffer */
size_t len, /* length of buffer */
loff_t *offset) /* offset in the file */
{
size_t num;
char *kbuf = (char *)file->private_data;
/* All of the data can he shoved in one iteration */
if (*offset != 0)
return 0;
num = fill_display_data(kbuf);
/* simple_read_from_buffer() is helper for copy to user space
It copies up to @2 (num) bytes from kernel buffer @4 (kbuf) at offset
@3 (offset) into the user space address starting at @1 (user_buf).
@5 (len) is max size of user buffer
*/
return simple_read_from_buffer(user_buf, num, offset, kbuf, len);
}
/* called on user write : clears the counters */
static ssize_t tlb_stats_clear(struct file *file, const char __user *user_buf,
size_t length, loff_t *offset)
{
numitlb = numdtlb = num_pte_not_present = 0;
return length;
}
static int tlb_stats_close(struct inode *inode, struct file *file)
{
free_page((unsigned long)(file->private_data));
return 0;
}
static const struct file_operations tlb_stats_file_ops = {
.read = tlb_stats_output,
.write = tlb_stats_clear,
.open = tlb_stats_open,
.release = tlb_stats_close
};
#endif
static int __init arc_debugfs_init(void)
{
test_dir = debugfs_create_dir("arc", NULL);
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
test_dentry = debugfs_create_file("tlb_stats", 0444, test_dir, NULL,
&tlb_stats_file_ops);
#endif
test_u32_dentry =
debugfs_create_u32("clr_on_read", 0444, test_dir, &clr_on_read);
return 0;
}
module_init(arc_debugfs_init);
static void __exit arc_debugfs_exit(void)
{
debugfs_remove(test_u32_dentry);
debugfs_remove(test_dentry);
debugfs_remove(test_dir);
}
module_exit(arc_debugfs_exit);
#endif

19
arch/arc/mm/cache.c
View File

@ -22,8 +22,8 @@
#include <asm/setup.h>
static int l2_line_sz;
int ioc_exists;
volatile int slc_enable = 1, ioc_enable = 1;
static int ioc_exists;
int slc_enable = 1, ioc_enable = 1;
unsigned long perip_base = ARC_UNCACHED_ADDR_SPACE; /* legacy value for boot */
unsigned long perip_end = 0xFFFFFFFF; /* legacy value */
@ -53,18 +53,15 @@ char *arc_cache_mumbojumbo(int c, char *buf, int len)
PR_CACHE(&cpuinfo_arc700[c].icache, CONFIG_ARC_HAS_ICACHE, "I-Cache");
PR_CACHE(&cpuinfo_arc700[c].dcache, CONFIG_ARC_HAS_DCACHE, "D-Cache");
if (!is_isa_arcv2())
return buf;
p = &cpuinfo_arc700[c].slc;
if (p->ver)
n += scnprintf(buf + n, len - n,
"SLC\t\t: %uK, %uB Line%s\n",
p->sz_k, p->line_len, IS_USED_RUN(slc_enable));
if (ioc_exists)
n += scnprintf(buf + n, len - n, "IOC\t\t:%s\n",
IS_DISABLED_RUN(ioc_enable));
n += scnprintf(buf + n, len - n, "Peripherals\t: %#lx%s%s\n",
perip_base,
IS_AVAIL3(ioc_exists, ioc_enable, ", IO-Coherency "));
return buf;
}
@ -113,8 +110,10 @@ static void read_decode_cache_bcr_arcv2(int cpu)
}
READ_BCR(ARC_REG_CLUSTER_BCR, cbcr);
if (cbcr.c && ioc_enable)
if (cbcr.c)
ioc_exists = 1;
else
ioc_enable = 0;
/* HS 2.0 didn't have AUX_VOL */
if (cpuinfo_arc700[cpu].core.family > 0x51) {
@ -1002,7 +1001,7 @@ void arc_cache_init(void)
read_aux_reg(ARC_REG_SLC_CTRL) | SLC_CTRL_DISABLE);
}
if (is_isa_arcv2() && ioc_exists) {
if (is_isa_arcv2() && ioc_enable) {
/* IO coherency base - 0x8z */
write_aux_reg(ARC_REG_IO_COH_AP0_BASE, 0x80000);
/* IO coherency aperture size - 512Mb: 0x8z-0xAz */

4
arch/arc/mm/dma.c
View File

@ -45,7 +45,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size,
* -For coherent data, Read/Write to buffers terminate early in cache
* (vs. always going to memory - thus are faster)
*/
if ((is_isa_arcv2() && ioc_exists) ||
if ((is_isa_arcv2() && ioc_enable) ||
(attrs & DMA_ATTR_NON_CONSISTENT))
need_coh = 0;
@ -97,7 +97,7 @@ static void arc_dma_free(struct device *dev, size_t size, void *vaddr,
int is_non_coh = 1;
is_non_coh = (attrs & DMA_ATTR_NON_CONSISTENT) ||
(is_isa_arcv2() && ioc_exists);
(is_isa_arcv2() && ioc_enable);
if (PageHighMem(page) || !is_non_coh)
iounmap((void __force __iomem *)vaddr);

6
arch/arc/mm/tlb.c
View File

@ -793,16 +793,16 @@ char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len)
char super_pg[64] = "";
if (p_mmu->s_pg_sz_m)
scnprintf(super_pg, 64, "%dM Super Page%s, ",
scnprintf(super_pg, 64, "%dM Super Page %s",
p_mmu->s_pg_sz_m,
IS_USED_CFG(CONFIG_TRANSPARENT_HUGEPAGE));
n += scnprintf(buf + n, len - n,
"MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d %s%s\n",
"MMU [v%x]\t: %dk PAGE, %sJTLB %d (%dx%d), uDTLB %d, uITLB %d%s%s\n",
p_mmu->ver, p_mmu->pg_sz_k, super_pg,
p_mmu->sets * p_mmu->ways, p_mmu->sets, p_mmu->ways,
p_mmu->u_dtlb, p_mmu->u_itlb,
IS_AVAIL2(p_mmu->pae, "PAE40 ", CONFIG_ARC_HAS_PAE40));
IS_AVAIL2(p_mmu->pae, ", PAE40 ", CONFIG_ARC_HAS_PAE40));
return buf;
}

21
arch/arc/mm/tlbex.S
View File

@ -237,15 +237,6 @@ ex_saved_reg1:
2:
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
and.f 0, r0, _PAGE_PRESENT
bz 1f
ld r3, [num_pte_not_present]
add r3, r3, 1
st r3, [num_pte_not_present]
1:
#endif
.endm
;-----------------------------------------------------------------
@ -309,12 +300,6 @@ ENTRY(EV_TLBMissI)
TLBMISS_FREEUP_REGS
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
ld r0, [@numitlb]
add r0, r0, 1
st r0, [@numitlb]
#endif
;----------------------------------------------------------------
; Get the PTE corresponding to V-addr accessed, r2 is setup with EFA
LOAD_FAULT_PTE
@ -349,12 +334,6 @@ ENTRY(EV_TLBMissD)
TLBMISS_FREEUP_REGS
#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
ld r0, [@numdtlb]
add r0, r0, 1
st r0, [@numdtlb]
#endif
;----------------------------------------------------------------
; Get the PTE corresponding to V-addr accessed
; If PTE exists, it will setup, r0 = PTE, r1 = Ptr to PTE, r2 = EFA

15
arch/arm/boot/dts/ste-snowball.dts
View File

@ -239,14 +239,25 @@
arm,primecell-periphid = <0x10480180>;
max-frequency = <100000000>;
bus-width = <4>;
cap-sd-highspeed;
cap-mmc-highspeed;
sd-uhs-sdr12;
sd-uhs-sdr25;
/* All direction control is used */
st,sig-dir-cmd;
st,sig-dir-dat0;
st,sig-dir-dat2;
st,sig-dir-dat31;
st,sig-pin-fbclk;
full-pwr-cycle;
vmmc-supply = <&ab8500_ldo_aux3_reg>;
vqmmc-supply = <&vmmci>;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sdi0_default_mode>;
pinctrl-1 = <&sdi0_sleep_mode>;
cd-gpios = <&gpio6 26 GPIO_ACTIVE_LOW>; // 218
/* GPIO218 MMC_CD */
cd-gpios = <&gpio6 26 GPIO_ACTIVE_LOW>;
status = "okay";
};
@ -549,7 +560,7 @@
/* VMMCI level-shifter enable */
snowball_cfg3 {
pins = "GPIO217_AH12";
ste,config = <&gpio_out_lo>;
ste,config = <&gpio_out_hi>;
};
/* VMMCI level-shifter voltage select */
snowball_cfg4 {

4
arch/arm/boot/dts/uniphier-pro5.dtsi
View File

@ -184,11 +184,11 @@
};
&mio_clk {
compatible = "socionext,uniphier-pro5-mio-clock";
compatible = "socionext,uniphier-pro5-sd-clock";
};
&mio_rst {
compatible = "socionext,uniphier-pro5-mio-reset";
compatible = "socionext,uniphier-pro5-sd-reset";
};
&peri_clk {

4
arch/arm/boot/dts/uniphier-pxs2.dtsi
View File

@ -197,11 +197,11 @@
};
&mio_clk {
compatible = "socionext,uniphier-pxs2-mio-clock";
compatible = "socionext,uniphier-pxs2-sd-clock";
};
&mio_rst {
compatible = "socionext,uniphier-pxs2-mio-reset";
compatible = "socionext,uniphier-pxs2-sd-reset";
};
&peri_clk {

2
arch/arm/boot/dts/vf500.dtsi
View File

@ -70,7 +70,7 @@
global_timer: timer@40002200 {
compatible = "arm,cortex-a9-global-timer";
reg = <0x40002200 0x20>;
interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
interrupts = <GIC_PPI 11 IRQ_TYPE_EDGE_RISING>;
interrupt-parent = <&intc>;
clocks = <&clks VF610_CLK_PLATFORM_BUS>;
};

1
arch/arm/configs/multi_v7_defconfig
View File

@ -850,6 +850,7 @@ CONFIG_PWM_SUN4I=y
CONFIG_PWM_TEGRA=y
CONFIG_PWM_VT8500=y
CONFIG_PHY_HIX5HD2_SATA=y
CONFIG_E1000E=y
CONFIG_PWM_STI=y
CONFIG_PWM_BCM2835=y
CONFIG_PWM_BRCMSTB=m

7
arch/arm/kvm/arm.c
View File

@ -1312,6 +1312,13 @@ static int init_hyp_mode(void)
goto out_err;
}
err = create_hyp_mappings(kvm_ksym_ref(__bss_start),
kvm_ksym_ref(__bss_stop), PAGE_HYP_RO);
if (err) {
kvm_err("Cannot map bss section\n");
goto out_err;
}
/*
* Map the Hyp stack pages
*/

17
arch/arm/mach-imx/gpc.c
View File

@ -408,7 +408,7 @@ static struct genpd_onecell_data imx_gpc_onecell_data = {
static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
{
struct clk *clk;
int i;
int i, ret;
imx6q_pu_domain.reg = pu_reg;
@ -430,13 +430,22 @@ static int imx_gpc_genpd_init(struct device *dev, struct regulator *pu_reg)
if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS))
return 0;
pm_genpd_init(&imx6q_pu_domain.base, NULL, false);
return of_genpd_add_provider_onecell(dev->of_node,
&imx_gpc_onecell_data);
for (i = 0; i < ARRAY_SIZE(imx_gpc_domains); i++)
pm_genpd_init(imx_gpc_domains[i], NULL, false);
ret = of_genpd_add_provider_onecell(dev->of_node,
&imx_gpc_onecell_data);
if (ret)
goto power_off;
return 0;
power_off:
imx6q_pm_pu_power_off(&imx6q_pu_domain.base);
clk_err:
while (i--)
clk_put(imx6q_pu_domain.clk[i]);
imx6q_pu_domain.reg = NULL;
return -EINVAL;
}

2
arch/arm/mach-imx/mach-imx6q.c
View File

@ -173,7 +173,7 @@ static void __init imx6q_enet_phy_init(void)
ksz9021rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
ksz9031rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffef,
ar8031_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef,
ar8035_phy_fixup);

4
arch/arm/mach-mvebu/Kconfig
View File

@ -23,6 +23,7 @@ config MACH_MVEBU_V7
select CACHE_L2X0
select ARM_CPU_SUSPEND
select MACH_MVEBU_ANY
select MVEBU_CLK_COREDIV
config MACH_ARMADA_370
bool "Marvell Armada 370 boards"
@ -32,7 +33,6 @@ config MACH_ARMADA_370
select CPU_PJ4B
select MACH_MVEBU_V7
select PINCTRL_ARMADA_370
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 370 SoC with device tree.
@ -50,7 +50,6 @@ config MACH_ARMADA_375
select HAVE_SMP
select MACH_MVEBU_V7
select PINCTRL_ARMADA_375
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 375 SoC with device tree.
@ -68,7 +67,6 @@ config MACH_ARMADA_38X
select HAVE_SMP
select MACH_MVEBU_V7
select PINCTRL_ARMADA_38X
select MVEBU_CLK_COREDIV
help
Say 'Y' here if you want your kernel to support boards based
on the Marvell Armada 380/385 SoC with device tree.

1
arch/arm/mach-uniphier/Kconfig
View File

@ -1,6 +1,7 @@
config ARCH_UNIPHIER
bool "Socionext UniPhier SoCs"
depends on ARCH_MULTI_V7
select ARCH_HAS_RESET_CONTROLLER
select ARM_AMBA
select ARM_GLOBAL_TIMER
select ARM_GIC

2
arch/arm64/Kconfig
View File

@ -915,7 +915,7 @@ config RANDOMIZE_BASE
config RANDOMIZE_MODULE_REGION_FULL
bool "Randomize the module region independently from the core kernel"
depends on RANDOMIZE_BASE
depends on RANDOMIZE_BASE && !DYNAMIC_FTRACE
default y
help
Randomizes the location of the module region without considering the

1
arch/arm64/Kconfig.platforms
View File

@ -190,6 +190,7 @@ config ARCH_THUNDER
config ARCH_UNIPHIER
bool "Socionext UniPhier SoC Family"
select ARCH_HAS_RESET_CONTROLLER
select PINCTRL
help
This enables support for Socionext UniPhier SoC family.

2
arch/arm64/Makefile
View File

@ -15,7 +15,7 @@ CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
GZFLAGS :=-9
ifneq ($(CONFIG_RELOCATABLE),)
LDFLAGS_vmlinux += -pie -Bsymbolic
LDFLAGS_vmlinux += -pie -shared -Bsymbolic
endif
ifeq ($(CONFIG_ARM64_ERRATUM_843419),y)

2
arch/arm64/boot/dts/broadcom/ns2-svk.dts
View File

@ -164,6 +164,8 @@
nand-ecc-mode = "hw";
nand-ecc-strength = <8>;
nand-ecc-step-size = <512>;
nand-bus-width = <16>;
brcm,nand-oob-sector-size = <16>;
#address-cells = <1>;
#size-cells = <1>;
};

1
arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
View File

@ -123,6 +123,7 @@
<1 14 0xf08>, /* Physical Non-Secure PPI */
<1 11 0xf08>, /* Virtual PPI */
<1 10 0xf08>; /* Hypervisor PPI */
fsl,erratum-a008585;
};
pmu {

1
arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
View File

@ -195,6 +195,7 @@
<1 14 4>, /* Physical Non-Secure PPI, active-low */
<1 11 4>, /* Virtual PPI, active-low */
<1 10 4>; /* Hypervisor PPI, active-low */
fsl,erratum-a008585;
};
pmu {

2
arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi
View File

@ -131,7 +131,7 @@
#address-cells = <0x1>;
#size-cells = <0x0>;
cell-index = <1>;
clocks = <&cpm_syscon0 0 3>;
clocks = <&cpm_syscon0 1 21>;
status = "disabled";
};

3
arch/arm64/boot/dts/rockchip/rk3368-geekbox.dts
View File

@ -116,7 +116,6 @@
cap-mmc-highspeed;
clock-frequency = <150000000>;
disable-wp;
keep-power-in-suspend;
non-removable;
num-slots = <1>;
vmmc-supply = <&vcc_io>;
@ -258,8 +257,6 @@
};
vcc_sd: SWITCH_REG1 {
regulator-always-on;
regulator-boot-on;
regulator-name = "vcc_sd";
};

4
arch/arm64/boot/dts/rockchip/rk3368-orion-r68-meta.dts
View File

@ -152,8 +152,6 @@
gpio = <&gpio3 11 GPIO_ACTIVE_LOW>;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
vin-supply = <&vcc_io>;
};
@ -201,7 +199,6 @@
bus-width = <8>;
cap-mmc-highspeed;
disable-wp;
keep-power-in-suspend;
mmc-pwrseq = <&emmc_pwrseq>;
mmc-hs200-1_2v;
mmc-hs200-1_8v;
@ -350,7 +347,6 @@
clock-freq-min-max = <400000 50000000>;
cap-sd-highspeed;
card-detect-delay = <200>;
keep-power-in-suspend;
num-slots = <1>;
pinctrl-names = "default";
pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;

12
arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi
View File

@ -257,18 +257,18 @@
reg = <0x59801000 0x400>;
};
mioctrl@59810000 {
compatible = "socionext,uniphier-mioctrl",
sdctrl@59810000 {
compatible = "socionext,uniphier-ld20-sdctrl",
"simple-mfd", "syscon";
reg = <0x59810000 0x800>;
mio_clk: clock {
compatible = "socionext,uniphier-ld20-mio-clock";
sd_clk: clock {
compatible = "socionext,uniphier-ld20-sd-clock";
#clock-cells = <1>;
};
mio_rst: reset {
compatible = "socionext,uniphier-ld20-mio-reset";
sd_rst: reset {
compatible = "socionext,uniphier-ld20-sd-reset";
#reset-cells = <1>;
};
};

2
arch/arm64/include/asm/cpufeature.h
View File

@ -94,7 +94,7 @@ struct arm64_cpu_capabilities {
u16 capability;
int def_scope; /* default scope */
bool (*matches)(const struct arm64_cpu_capabilities *caps, int scope);
void (*enable)(void *); /* Called on all active CPUs */
int (*enable)(void *); /* Called on all active CPUs */
union {
struct { /* To be used for erratum handling only */
u32 midr_model;

3
arch/arm64/include/asm/exec.h
View File

@ -18,6 +18,9 @@
#ifndef __ASM_EXEC_H
#define __ASM_EXEC_H
#include <linux/sched.h>
extern unsigned long arch_align_stack(unsigned long sp);
void uao_thread_switch(struct task_struct *next);
#endif /* __ASM_EXEC_H */

11
arch/arm64/include/asm/kvm_emulate.h
View File

@ -178,11 +178,6 @@ static inline bool kvm_vcpu_dabt_isvalid(const struct kvm_vcpu *vcpu)
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_ISV);
}
static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR);
}
static inline bool kvm_vcpu_dabt_issext(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_SSE);
@ -203,6 +198,12 @@ static inline bool kvm_vcpu_dabt_iss1tw(const struct kvm_vcpu *vcpu)
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_S1PTW);
}
static inline bool kvm_vcpu_dabt_iswrite(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_WNR) ||
kvm_vcpu_dabt_iss1tw(vcpu); /* AF/DBM update */
}
static inline bool kvm_vcpu_dabt_is_cm(const struct kvm_vcpu *vcpu)
{
return !!(kvm_vcpu_get_hsr(vcpu) & ESR_ELx_CM);

2
arch/arm64/include/asm/memory.h
View File

@ -217,7 +217,7 @@ static inline void *phys_to_virt(phys_addr_t x)
#define _virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#else
#define __virt_to_pgoff(kaddr) (((u64)(kaddr) & ~PAGE_OFFSET) / PAGE_SIZE * sizeof(struct page))
#define __page_to_voff(kaddr) (((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
#define __page_to_voff(page) (((u64)(page) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
#define page_to_virt(page) ((void *)((__page_to_voff(page)) | PAGE_OFFSET))
#define virt_to_page(vaddr) ((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START))

5
arch/arm64/include/asm/module.h
View File

@ -17,6 +17,7 @@
#define __ASM_MODULE_H
#include <asm-generic/module.h>
#include <asm/memory.h>
#define MODULE_ARCH_VERMAGIC "aarch64"
@ -32,6 +33,10 @@ u64 module_emit_plt_entry(struct module *mod, const Elf64_Rela *rela,
Elf64_Sym *sym);
#ifdef CONFIG_RANDOMIZE_BASE
#ifdef CONFIG_MODVERSIONS
#define ARCH_RELOCATES_KCRCTAB
#define reloc_start (kimage_vaddr - KIMAGE_VADDR)
#endif
extern u64 module_alloc_base;
#else
#define module_alloc_base ((u64)_etext - MODULES_VSIZE)

120
arch/arm64/include/asm/percpu.h
View File

@ -44,48 +44,44 @@ static inline unsigned long __percpu_##op(void *ptr, \
\
switch (size) { \
case 1: \
do { \
asm ("//__per_cpu_" #op "_1\n" \
"ldxrb %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_1\n" \
"1: ldxrb %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxrb %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u8 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxrb %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u8 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 2: \
do { \
asm ("//__per_cpu_" #op "_2\n" \
"ldxrh %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_2\n" \
"1: ldxrh %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxrh %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u16 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxrh %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u16 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 4: \
do { \
asm ("//__per_cpu_" #op "_4\n" \
"ldxr %w[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_4\n" \
"1: ldxr %w[ret], %[ptr]\n" \
#asm_op " %w[ret], %w[ret], %w[val]\n" \
"stxr %w[loop], %w[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u32 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxr %w[loop], %w[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u32 *)ptr) \
: [val] "Ir" (val)); \
break; \
case 8: \
do { \
asm ("//__per_cpu_" #op "_8\n" \
"ldxr %[ret], %[ptr]\n" \
asm ("//__per_cpu_" #op "_8\n" \
"1: ldxr %[ret], %[ptr]\n" \
#asm_op " %[ret], %[ret], %[val]\n" \
"stxr %w[loop], %[ret], %[ptr]\n" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u64 *)ptr) \
: [val] "Ir" (val)); \
} while (loop); \
" stxr %w[loop], %[ret], %[ptr]\n" \
" cbnz %w[loop], 1b" \
: [loop] "=&r" (loop), [ret] "=&r" (ret), \
[ptr] "+Q"(*(u64 *)ptr) \
: [val] "Ir" (val)); \
break; \
default: \
BUILD_BUG(); \
@ -150,44 +146,40 @@ static inline unsigned long __percpu_xchg(void *ptr, unsigned long val,
switch (size) {
case 1:
do {
asm ("//__percpu_xchg_1\n"
"ldxrb %w[ret], %[ptr]\n"
"stxrb %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u8 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_1\n"
"1: ldxrb %w[ret], %[ptr]\n"
" stxrb %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u8 *)ptr)
: [val] "r" (val));
break;
case 2:
do {
asm ("//__percpu_xchg_2\n"
"ldxrh %w[ret], %[ptr]\n"
"stxrh %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u16 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_2\n"
"1: ldxrh %w[ret], %[ptr]\n"
" stxrh %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u16 *)ptr)
: [val] "r" (val));
break;
case 4:
do {
asm ("//__percpu_xchg_4\n"
"ldxr %w[ret], %[ptr]\n"
"stxr %w[loop], %w[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u32 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_4\n"
"1: ldxr %w[ret], %[ptr]\n"
" stxr %w[loop], %w[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u32 *)ptr)
: [val] "r" (val));
break;
case 8:
do {
asm ("//__percpu_xchg_8\n"
"ldxr %[ret], %[ptr]\n"
"stxr %w[loop], %[val], %[ptr]\n"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u64 *)ptr)
: [val] "r" (val));
} while (loop);
asm ("//__percpu_xchg_8\n"
"1: ldxr %[ret], %[ptr]\n"
" stxr %w[loop], %[val], %[ptr]\n"
" cbnz %w[loop], 1b"
: [loop] "=&r"(loop), [ret] "=&r"(ret),
[ptr] "+Q"(*(u64 *)ptr)
: [val] "r" (val));
break;
default:
BUILD_BUG();

6
arch/arm64/include/asm/processor.h
View File

@ -188,8 +188,8 @@ static inline void spin_lock_prefetch(const void *ptr)
#endif
void cpu_enable_pan(void *__unused);
void cpu_enable_uao(void *__unused);
void cpu_enable_cache_maint_trap(void *__unused);
int cpu_enable_pan(void *__unused);
int cpu_enable_uao(void *__unused);
int cpu_enable_cache_maint_trap(void *__unused);
#endif /* __ASM_PROCESSOR_H */

2
arch/arm64/include/asm/sysreg.h
View File

@ -286,7 +286,7 @@ asm(
#define write_sysreg_s(v, r) do { \
u64 __val = (u64)v; \
asm volatile("msr_s " __stringify(r) ", %0" : : "rZ" (__val)); \
asm volatile("msr_s " __stringify(r) ", %x0" : : "rZ" (__val)); \
} while (0)
static inline void config_sctlr_el1(u32 clear, u32 set)

8
arch/arm64/include/asm/uaccess.h
View File

@ -21,6 +21,7 @@
/*
* User space memory access functions
*/
#include <linux/bitops.h>
#include <linux/kasan-checks.h>
#include <linux/string.h>
#include <linux/thread_info.h>
@ -102,6 +103,13 @@ static inline void set_fs(mm_segment_t fs)
flag; \
})
/*
* When dealing with data aborts or instruction traps we may end up with
* a tagged userland pointer. Clear the tag to get a sane pointer to pass
* on to access_ok(), for instance.
*/
#define untagged_addr(addr) sign_extend64(addr, 55)
#define access_ok(type, addr, size) __range_ok(addr, size)
#define user_addr_max get_fs

36
arch/arm64/kernel/armv8_deprecated.c
View File

@ -280,35 +280,43 @@ static void __init register_insn_emulation_sysctl(struct ctl_table *table)
/*
* Error-checking SWP macros implemented using ldxr{b}/stxr{b}
*/
#define __user_swpX_asm(data, addr, res, temp, B) \
/* Arbitrary constant to ensure forward-progress of the LL/SC loop */
#define __SWP_LL_SC_LOOPS 4
#define __user_swpX_asm(data, addr, res, temp, temp2, B) \
__asm__ __volatile__( \
" mov %w3, %w7\n" \
ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, \
CONFIG_ARM64_PAN) \
"0: ldxr"B" %w2, [%3]\n" \
"1: stxr"B" %w0, %w1, [%3]\n" \
"0: ldxr"B" %w2, [%4]\n" \
"1: stxr"B" %w0, %w1, [%4]\n" \
" cbz %w0, 2f\n" \
" mov %w0, %w4\n" \
" sub %w3, %w3, #1\n" \
" cbnz %w3, 0b\n" \
" mov %w0, %w5\n" \
" b 3f\n" \
"2:\n" \
" mov %w1, %w2\n" \
"3:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"4: mov %w0, %w5\n" \
"4: mov %w0, %w6\n" \
" b 3b\n" \
" .popsection" \
_ASM_EXTABLE(0b, 4b) \
_ASM_EXTABLE(1b, 4b) \
ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, \
CONFIG_ARM64_PAN) \
: "=&r" (res), "+r" (data), "=&r" (temp) \
: "r" (addr), "i" (-EAGAIN), "i" (-EFAULT) \
: "=&r" (res), "+r" (data), "=&r" (temp), "=&r" (temp2) \
: "r" (addr), "i" (-EAGAIN), "i" (-EFAULT), \
"i" (__SWP_LL_SC_LOOPS) \
: "memory")
#define __user_swp_asm(data, addr, res, temp) \
__user_swpX_asm(data, addr, res, temp, "")
#define __user_swpb_asm(data, addr, res, temp) \
__user_swpX_asm(data, addr, res, temp, "b")
#define __user_swp_asm(data, addr, res, temp, temp2) \
__user_swpX_asm(data, addr, res, temp, temp2, "")
#define __user_swpb_asm(data, addr, res, temp, temp2) \
__user_swpX_asm(data, addr, res, temp, temp2, "b")
/*
* Bit 22 of the instruction encoding distinguishes between
@ -328,12 +336,12 @@ static int emulate_swpX(unsigned int address, unsigned int *data,
}
while (1) {
unsigned long temp;
unsigned long temp, temp2;
if (type == TYPE_SWPB)
__user_swpb_asm(*data, address, res, temp);
__user_swpb_asm(*data, address, res, temp, temp2);
else
__user_swp_asm(*data, address, res, temp);
__user_swp_asm(*data, address, res, temp, temp2);
if (likely(res != -EAGAIN) || signal_pending(current))
break;

3
arch/arm64/kernel/cpu_errata.c
View File

@ -39,10 +39,11 @@ has_mismatched_cache_line_size(const struct arm64_cpu_capabilities *entry,
(arm64_ftr_reg_ctrel0.sys_val & arm64_ftr_reg_ctrel0.strict_mask);
}
static void cpu_enable_trap_ctr_access(void *__unused)
static int cpu_enable_trap_ctr_access(void *__unused)
{
/* Clear SCTLR_EL1.UCT */
config_sctlr_el1(SCTLR_EL1_UCT, 0);
return 0;
}
#define MIDR_RANGE(model, min, max) \

10
arch/arm64/kernel/cpufeature.c
View File

@ -19,7 +19,9 @@
#define pr_fmt(fmt) "CPU features: " fmt
#include <linux/bsearch.h>
#include <linux/cpumask.h>
#include <linux/sort.h>
#include <linux/stop_machine.h>
#include <linux/types.h>
#include <asm/cpu.h>
#include <asm/cpufeature.h>
@ -941,7 +943,13 @@ void __init enable_cpu_capabilities(const struct arm64_cpu_capabilities *caps)
{
for (; caps->matches; caps++)
if (caps->enable && cpus_have_cap(caps->capability))
on_each_cpu(caps->enable, NULL, true);
/*
* Use stop_machine() as it schedules the work allowing
* us to modify PSTATE, instead of on_each_cpu() which
* uses an IPI, giving us a PSTATE that disappears when
* we return.
*/
stop_machine(caps->enable, NULL, cpu_online_mask);
}
/*

3
arch/arm64/kernel/head.S
View File

@ -586,8 +586,9 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems
b.lt 4f // Skip if no PMU present
mrs x0, pmcr_el0 // Disable debug access traps
ubfx x0, x0, #11, #5 // to EL2 and allow access to
msr mdcr_el2, x0 // all PMU counters from EL1
4:
csel x0, xzr, x0, lt // all PMU counters from EL1
msr mdcr_el2, x0 // (if they exist)
/* Stage-2 translation */
msr vttbr_el2, xzr

18
arch/arm64/kernel/process.c
View File

@ -49,6 +49,7 @@
#include <asm/alternative.h>
#include <asm/compat.h>
#include <asm/cacheflush.h>
#include <asm/exec.h>
#include <asm/fpsimd.h>
#include <asm/mmu_context.h>
#include <asm/processor.h>
@ -186,10 +187,19 @@ void __show_regs(struct pt_regs *regs)
printk("pc : [<%016llx>] lr : [<%016llx>] pstate: %08llx\n",
regs->pc, lr, regs->pstate);
printk("sp : %016llx\n", sp);
for (i = top_reg; i >= 0; i--) {
i = top_reg;
while (i >= 0) {
printk("x%-2d: %016llx ", i, regs->regs[i]);
if (i % 2 == 0)
printk("\n");
i--;
if (i % 2 == 0) {
pr_cont("x%-2d: %016llx ", i, regs->regs[i]);
i--;
}
pr_cont("\n");
}
printk("\n");
}
@ -301,7 +311,7 @@ static void tls_thread_switch(struct task_struct *next)
}
/* Restore the UAO state depending on next's addr_limit */
static void uao_thread_switch(struct task_struct *next)
void uao_thread_switch(struct task_struct *next)
{
if (IS_ENABLED(CONFIG_ARM64_UAO)) {
if (task_thread_info(next)->addr_limit == KERNEL_DS)

2
arch/arm64/kernel/sleep.S
View File

@ -135,7 +135,7 @@ ENTRY(_cpu_resume)
#ifdef CONFIG_KASAN
mov x0, sp
bl kasan_unpoison_remaining_stack
bl kasan_unpoison_task_stack_below
#endif
ldp x19, x20, [x29, #16]

1
arch/arm64/kernel/smp.c
View File

@ -544,6 +544,7 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor)
return;
}
bootcpu_valid = true;
early_map_cpu_to_node(0, acpi_numa_get_nid(0, hwid));
return;
}

11
arch/arm64/kernel/suspend.c
View File

@ -1,8 +1,11 @@
#include <linux/ftrace.h>
#include <linux/percpu.h>
#include <linux/slab.h>
#include <asm/alternative.h>
#include <asm/cacheflush.h>
#include <asm/cpufeature.h>
#include <asm/debug-monitors.h>
#include <asm/exec.h>
#include <asm/pgtable.h>
#include <asm/memory.h>
#include <asm/mmu_context.h>
@ -49,6 +52,14 @@ void notrace __cpu_suspend_exit(void)
*/
set_my_cpu_offset(per_cpu_offset(cpu));
/*
* PSTATE was not saved over suspend/resume, re-enable any detected
* features that might not have been set correctly.
*/
asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN,
CONFIG_ARM64_PAN));
uao_thread_switch(current);
/*
* Restore HW breakpoint registers to sane values
* before debug exceptions are possibly reenabled

30
arch/arm64/kernel/traps.c
View File

@ -428,24 +428,28 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
force_signal_inject(SIGILL, ILL_ILLOPC, regs, 0);
}
void cpu_enable_cache_maint_trap(void *__unused)
int cpu_enable_cache_maint_trap(void *__unused)
{
config_sctlr_el1(SCTLR_EL1_UCI, 0);
return 0;
}
#define __user_cache_maint(insn, address, res) \
asm volatile ( \
"1: " insn ", %1\n" \
" mov %w0, #0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %w0, %w2\n" \
" b 2b\n" \
" .popsection\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (res) \
: "r" (address), "i" (-EFAULT) )
if (untagged_addr(address) >= user_addr_max()) \
res = -EFAULT; \
else \
asm volatile ( \
"1: " insn ", %1\n" \
" mov %w0, #0\n" \
"2:\n" \
" .pushsection .fixup,\"ax\"\n" \
" .align 2\n" \
"3: mov %w0, %w2\n" \
" b 2b\n" \
" .popsection\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (res) \
: "r" (address), "i" (-EFAULT) )
static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs)
{

15
arch/arm64/mm/fault.c
View File

@ -29,7 +29,9 @@
#include <linux/sched.h>
#include <linux/highmem.h>
#include <linux/perf_event.h>
#include <linux/preempt.h>
#include <asm/bug.h>
#include <asm/cpufeature.h>
#include <asm/exception.h>
#include <asm/debug-monitors.h>
@ -670,9 +672,17 @@ asmlinkage int __exception do_debug_exception(unsigned long addr,
NOKPROBE_SYMBOL(do_debug_exception);
#ifdef CONFIG_ARM64_PAN
void cpu_enable_pan(void *__unused)
int cpu_enable_pan(void *__unused)
{
/*
* We modify PSTATE. This won't work from irq context as the PSTATE
* is discarded once we return from the exception.
*/
WARN_ON_ONCE(in_interrupt());
config_sctlr_el1(SCTLR_EL1_SPAN, 0);
asm(SET_PSTATE_PAN(1));
return 0;
}
#endif /* CONFIG_ARM64_PAN */
@ -683,8 +693,9 @@ void cpu_enable_pan(void *__unused)
* We need to enable the feature at runtime (instead of adding it to
* PSR_MODE_EL1h) as the feature may not be implemented by the cpu.
*/
void cpu_enable_uao(void *__unused)
int cpu_enable_uao(void *__unused)
{
asm(SET_PSTATE_UAO(1));
return 0;
}
#endif /* CONFIG_ARM64_UAO */

26
arch/arm64/mm/init.c
View File

@ -421,35 +421,35 @@ void __init mem_init(void)
pr_notice("Virtual kernel memory layout:\n");
#ifdef CONFIG_KASAN
pr_cont(" kasan : 0x%16lx - 0x%16lx (%6ld GB)\n",
pr_notice(" kasan : 0x%16lx - 0x%16lx (%6ld GB)\n",
MLG(KASAN_SHADOW_START, KASAN_SHADOW_END));
#endif
pr_cont(" modules : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" modules : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(MODULES_VADDR, MODULES_END));
pr_cont(" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n",
pr_notice(" vmalloc : 0x%16lx - 0x%16lx (%6ld GB)\n",
MLG(VMALLOC_START, VMALLOC_END));
pr_cont(" .text : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .text : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(_text, _etext));
pr_cont(" .rodata : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .rodata : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__start_rodata, __init_begin));
pr_cont(" .init : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .init : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__init_begin, __init_end));
pr_cont(" .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .data : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(_sdata, _edata));
pr_cont(" .bss : 0x%p" " - 0x%p" " (%6ld KB)\n",
pr_notice(" .bss : 0x%p" " - 0x%p" " (%6ld KB)\n",
MLK_ROUNDUP(__bss_start, __bss_stop));
pr_cont(" fixed : 0x%16lx - 0x%16lx (%6ld KB)\n",
pr_notice(" fixed : 0x%16lx - 0x%16lx (%6ld KB)\n",
MLK(FIXADDR_START, FIXADDR_TOP));
pr_cont(" PCI I/O : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" PCI I/O : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(PCI_IO_START, PCI_IO_END));
#ifdef CONFIG_SPARSEMEM_VMEMMAP
pr_cont(" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n",
pr_notice(" vmemmap : 0x%16lx - 0x%16lx (%6ld GB maximum)\n",
MLG(VMEMMAP_START, VMEMMAP_START + VMEMMAP_SIZE));
pr_cont(" 0x%16lx - 0x%16lx (%6ld MB actual)\n",
pr_notice(" 0x%16lx - 0x%16lx (%6ld MB actual)\n",
MLM((unsigned long)phys_to_page(memblock_start_of_DRAM()),
(unsigned long)virt_to_page(high_memory)));
#endif
pr_cont(" memory : 0x%16lx - 0x%16lx (%6ld MB)\n",
pr_notice(" memory : 0x%16lx - 0x%16lx (%6ld MB)\n",
MLM(__phys_to_virt(memblock_start_of_DRAM()),
(unsigned long)high_memory));

9
arch/arm64/mm/numa.c
View File

@ -147,7 +147,7 @@ static int __init early_cpu_to_node(int cpu)
static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
{
return node_distance(from, to);
return node_distance(early_cpu_to_node(from), early_cpu_to_node(to));
}
static void * __init pcpu_fc_alloc(unsigned int cpu, size_t size,
@ -223,8 +223,11 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn)
void *nd;
int tnid;
pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n",
nid, start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
if (start_pfn < end_pfn)
pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n", nid,
start_pfn << PAGE_SHIFT, (end_pfn << PAGE_SHIFT) - 1);
else
pr_info("Initmem setup node %d [<memory-less node>]\n", nid);
nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
nd = __va(nd_pa);

5
arch/blackfin/kernel/ptrace.c
View File

@ -271,7 +271,7 @@ long arch_ptrace(struct task_struct *child, long request,
case BFIN_MEM_ACCESS_CORE:
case BFIN_MEM_ACCESS_CORE_ONLY:
copied = access_process_vm(child, addr, &tmp,
to_copy, 0);
to_copy, FOLL_FORCE);
if (copied)
break;
@ -324,7 +324,8 @@ long arch_ptrace(struct task_struct *child, long request,
case BFIN_MEM_ACCESS_CORE:
case BFIN_MEM_ACCESS_CORE_ONLY:
copied = access_process_vm(child, addr, &data,
to_copy, 1);
to_copy,
FOLL_FORCE | FOLL_WRITE);
break;
case BFIN_MEM_ACCESS_DMA:
if (safe_dma_memcpy(paddr, &data, to_copy))

6
arch/cris/arch-v32/drivers/cryptocop.c
View File

@ -2722,7 +2722,6 @@ static int cryptocop_ioctl_process(struct inode *inode, struct file *filp, unsig
err = get_user_pages((unsigned long int)(oper.indata + prev_ix),
noinpages,
0, /* read access only for in data */
0, /* no force */
inpages,
NULL);
@ -2736,8 +2735,7 @@ static int cryptocop_ioctl_process(struct inode *inode, struct file *filp, unsig
if (oper.do_cipher){
err = get_user_pages((unsigned long int)oper.cipher_outdata,
nooutpages,
1, /* write access for out data */
0, /* no force */
FOLL_WRITE, /* write access for out data */
outpages,
NULL);
up_read(&current->mm->mmap_sem);
@ -3151,7 +3149,7 @@ static void print_dma_descriptors(struct cryptocop_int_operation *iop)
printk("print_dma_descriptors start\n");
printk("iop:\n");
printk("\tsid: 0x%lld\n", iop->sid);
printk("\tsid: 0x%llx\n", iop->sid);
printk("\tcdesc_out: 0x%p\n", iop->cdesc_out);
printk("\tcdesc_in: 0x%p\n", iop->cdesc_in);

4
arch/cris/arch-v32/kernel/ptrace.c
View File

@ -147,7 +147,7 @@ long arch_ptrace(struct task_struct *child, long request,
/* The trampoline page is globally mapped, no page table to traverse.*/
tmp = *(unsigned long*)addr;
} else {
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), FOLL_FORCE);
if (copied != sizeof(tmp))
break;
@ -279,7 +279,7 @@ static int insn_size(struct task_struct *child, unsigned long pc)
int opsize = 0;
/* Read the opcode at pc (do what PTRACE_PEEKTEXT would do). */
copied = access_process_vm(child, pc, &opcode, sizeof(opcode), 0);
copied = access_process_vm(child, pc, &opcode, sizeof(opcode), FOLL_FORCE);
if (copied != sizeof(opcode))
return 0;

4
arch/h8300/include/asm/thread_info.h
View File

@ -31,7 +31,6 @@ struct thread_info {
int cpu; /* cpu we're on */
int preempt_count; /* 0 => preemptable, <0 => BUG */
mm_segment_t addr_limit;
struct restart_block restart_block;
};
/*
@ -44,9 +43,6 @@ struct thread_info {
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
.addr_limit = KERNEL_DS, \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \
}
#define init_thread_info (init_thread_union.thread_info)

2
arch/h8300/kernel/signal.c
View File

@ -79,7 +79,7 @@ restore_sigcontext(struct sigcontext *usc, int *pd0)
unsigned int er0;
/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
current->restart_block.fn = do_no_restart_syscall;
/* restore passed registers */
#define COPY(r) do { err |= get_user(regs->r, &usc->sc_##r); } while (0)

2
arch/ia64/kernel/err_inject.c
View File

@ -142,7 +142,7 @@ store_virtual_to_phys(struct device *dev, struct device_attribute *attr,
u64 virt_addr=simple_strtoull(buf, NULL, 16);
int ret;
ret = get_user_pages(virt_addr, 1, VM_READ, 0, NULL, NULL);
ret = get_user_pages(virt_addr, 1, FOLL_WRITE, NULL, NULL);
if (ret<=0) {
#ifdef ERR_INJ_DEBUG
printk("Virtual address %lx is not existing.\n",virt_addr);

14
arch/ia64/kernel/ptrace.c
View File

@ -453,7 +453,7 @@ ia64_peek (struct task_struct *child, struct switch_stack *child_stack,
return 0;
}
}
copied = access_process_vm(child, addr, &ret, sizeof(ret), 0);
copied = access_process_vm(child, addr, &ret, sizeof(ret), FOLL_FORCE);
if (copied != sizeof(ret))
return -EIO;
*val = ret;
@ -489,7 +489,8 @@ ia64_poke (struct task_struct *child, struct switch_stack *child_stack,
*ia64_rse_skip_regs(krbs, regnum) = val;
}
}
} else if (access_process_vm(child, addr, &val, sizeof(val), 1)
} else if (access_process_vm(child, addr, &val, sizeof(val),
FOLL_FORCE | FOLL_WRITE)
!= sizeof(val))
return -EIO;
return 0;
@ -543,7 +544,8 @@ ia64_sync_user_rbs (struct task_struct *child, struct switch_stack *sw,
ret = ia64_peek(child, sw, user_rbs_end, addr, &val);
if (ret < 0)
return ret;
if (access_process_vm(child, addr, &val, sizeof(val), 1)
if (access_process_vm(child, addr, &val, sizeof(val),
FOLL_FORCE | FOLL_WRITE)
!= sizeof(val))
return -EIO;
}
@ -559,7 +561,8 @@ ia64_sync_kernel_rbs (struct task_struct *child, struct switch_stack *sw,
/* now copy word for word from user rbs to kernel rbs: */
for (addr = user_rbs_start; addr < user_rbs_end; addr += 8) {
if (access_process_vm(child, addr, &val, sizeof(val), 0)
if (access_process_vm(child, addr, &val, sizeof(val),
FOLL_FORCE)
!= sizeof(val))
return -EIO;
@ -1156,7 +1159,8 @@ arch_ptrace (struct task_struct *child, long request,
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
/* read word at location addr */
if (access_process_vm(child, addr, &data, sizeof(data), 0)
if (access_process_vm(child, addr, &data, sizeof(data),
FOLL_FORCE)
!= sizeof(data))
return -EIO;
/* ensure return value is not mistaken for error code */

15
arch/m32r/kernel/ptrace.c
View File

@ -493,7 +493,8 @@ unregister_all_debug_traps(struct task_struct *child)
int i;
for (i = 0; i < p->nr_trap; i++)
access_process_vm(child, p->addr[i], &p->insn[i], sizeof(p->insn[i]), 1);
access_process_vm(child, p->addr[i], &p->insn[i], sizeof(p->insn[i]),
FOLL_FORCE | FOLL_WRITE);
p->nr_trap = 0;
}
@ -537,7 +538,8 @@ embed_debug_trap(struct task_struct *child, unsigned long next_pc)
unsigned long next_insn, code;
unsigned long addr = next_pc & ~3;
if (access_process_vm(child, addr, &next_insn, sizeof(next_insn), 0)
if (access_process_vm(child, addr, &next_insn, sizeof(next_insn),
FOLL_FORCE)
!= sizeof(next_insn)) {
return -1; /* error */
}
@ -546,7 +548,8 @@ embed_debug_trap(struct task_struct *child, unsigned long next_pc)
if (register_debug_trap(child, next_pc, next_insn, &code)) {
return -1; /* error */
}
if (access_process_vm(child, addr, &code, sizeof(code), 1)
if (access_process_vm(child, addr, &code, sizeof(code),
FOLL_FORCE | FOLL_WRITE)
!= sizeof(code)) {
return -1; /* error */
}
@ -562,7 +565,8 @@ withdraw_debug_trap(struct pt_regs *regs)
addr = (regs->bpc - 2) & ~3;
regs->bpc -= 2;
if (unregister_debug_trap(current, addr, &code)) {
access_process_vm(current, addr, &code, sizeof(code), 1);
access_process_vm(current, addr, &code, sizeof(code),
FOLL_FORCE | FOLL_WRITE);
invalidate_cache();
}
}
@ -589,7 +593,8 @@ void user_enable_single_step(struct task_struct *child)
/* Compute next pc. */
pc = get_stack_long(child, PT_BPC);
if (access_process_vm(child, pc&~3, &insn, sizeof(insn), 0)
if (access_process_vm(child, pc&~3, &insn, sizeof(insn),
FOLL_FORCE)
!= sizeof(insn))
return;

5
arch/mips/kernel/ptrace32.c
View File

@ -70,7 +70,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
break;
copied = access_process_vm(child, (u64)addrOthers, &tmp,
sizeof(tmp), 0);
sizeof(tmp), FOLL_FORCE);
if (copied != sizeof(tmp))
break;
ret = put_user(tmp, (u32 __user *) (unsigned long) data);
@ -179,7 +179,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
break;
ret = 0;
if (access_process_vm(child, (u64)addrOthers, &data,
sizeof(data), 1) == sizeof(data))
sizeof(data),
FOLL_FORCE | FOLL_WRITE) == sizeof(data))
break;
ret = -EIO;
break;

1
arch/mips/kvm/mips.c
View File

@ -14,6 +14,7 @@
#include <linux/err.h>
#include <linux/kdebug.h>
#include <linux/module.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/bootmem.h>

2
arch/mips/mm/gup.c
View File

@ -287,7 +287,7 @@ slow_irqon:
pages += nr;
ret = get_user_pages_unlocked(start, (end - start) >> PAGE_SHIFT,
write, 0, pages);
pages, write ? FOLL_WRITE : 0);
/* Have to be a bit careful with return values */
if (nr > 0) {

18
arch/powerpc/boot/main.c
View File

@ -32,9 +32,16 @@ static struct addr_range prep_kernel(void)
void *addr = 0;
struct elf_info ei;
long len;
int uncompressed_image = 0;
partial_decompress(vmlinuz_addr, vmlinuz_size,
len = partial_decompress(vmlinuz_addr, vmlinuz_size,
elfheader, sizeof(elfheader), 0);
/* assume uncompressed data if -1 is returned */
if (len == -1) {
uncompressed_image = 1;
memcpy(elfheader, vmlinuz_addr, sizeof(elfheader));
printf("No valid compressed data found, assume uncompressed data\n\r");
}
if (!parse_elf64(elfheader, &ei) && !parse_elf32(elfheader, &ei))
fatal("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
@ -67,6 +74,13 @@ static struct addr_range prep_kernel(void)
"device tree\n\r");
}
if (uncompressed_image) {
memcpy(addr, vmlinuz_addr + ei.elfoffset, ei.loadsize);
printf("0x%lx bytes of uncompressed data copied\n\r",
ei.loadsize);
goto out;
}
/* Finally, decompress the kernel */
printf("Decompressing (0x%p <- 0x%p:0x%p)...\n\r", addr,
vmlinuz_addr, vmlinuz_addr+vmlinuz_size);
@ -82,7 +96,7 @@ static struct addr_range prep_kernel(void)
len, ei.loadsize);
printf("Done! Decompressed 0x%lx bytes\n\r", len);
out:
flush_cache(addr, ei.loadsize);
return (struct addr_range){addr, ei.memsize};

2
arch/powerpc/include/asm/cpuidle.h
View File

@ -26,7 +26,7 @@ extern u64 pnv_first_deep_stop_state;
std r0,0(r1); \
ptesync; \
ld r0,0(r1); \
1: cmp cr0,r0,r0; \
1: cmpd cr0,r0,r0; \
bne 1b; \
IDLE_INST; \
b .

16
arch/powerpc/include/asm/exception-64s.h
View File

@ -93,6 +93,10 @@
ld reg,PACAKBASE(r13); /* get high part of &label */ \
ori reg,reg,(FIXED_SYMBOL_ABS_ADDR(label))@l;
#define __LOAD_HANDLER(reg, label) \
ld reg,PACAKBASE(r13); \
ori reg,reg,(ABS_ADDR(label))@l;
/* Exception register prefixes */
#define EXC_HV H
#define EXC_STD
@ -208,6 +212,18 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define kvmppc_interrupt kvmppc_interrupt_pr
#endif
#ifdef CONFIG_RELOCATABLE
#define BRANCH_TO_COMMON(reg, label) \
__LOAD_HANDLER(reg, label); \
mtctr reg; \
bctr
#else
#define BRANCH_TO_COMMON(reg, label) \
b label
#endif
#define __KVM_HANDLER_PROLOG(area, n) \
BEGIN_FTR_SECTION_NESTED(947) \
ld r10,area+EX_CFAR(r13); \

12
arch/powerpc/include/asm/tlb.h
View File

@ -52,11 +52,23 @@ static inline int mm_is_core_local(struct mm_struct *mm)
return cpumask_subset(mm_cpumask(mm),
topology_sibling_cpumask(smp_processor_id()));
}
static inline int mm_is_thread_local(struct mm_struct *mm)
{
return cpumask_equal(mm_cpumask(mm),
cpumask_of(smp_processor_id()));
}
#else
static inline int mm_is_core_local(struct mm_struct *mm)
{
return 1;
}
static inline int mm_is_thread_local(struct mm_struct *mm)
{
return 1;
}
#endif
#endif /* __KERNEL__ */

4
arch/powerpc/include/asm/unistd.h
View File

@ -16,6 +16,10 @@
#define __NR__exit __NR_exit
#define __IGNORE_pkey_mprotect
#define __IGNORE_pkey_alloc
#define __IGNORE_pkey_free
#ifndef __ASSEMBLY__
#include <linux/types.h>

50
arch/powerpc/kernel/exceptions-64s.S
View File

@ -95,19 +95,35 @@ __start_interrupts:
/* No virt vectors corresponding with 0x0..0x100 */
EXC_VIRT_NONE(0x4000, 0x4100)
#ifdef CONFIG_PPC_P7_NAP
/*
* If running native on arch 2.06 or later, check if we are waking up
* from nap/sleep/winkle, and branch to idle handler.
*/
#define IDLETEST(n) \
BEGIN_FTR_SECTION ; \
mfspr r10,SPRN_SRR1 ; \
rlwinm. r10,r10,47-31,30,31 ; \
beq- 1f ; \
cmpwi cr3,r10,2 ; \
BRANCH_TO_COMMON(r10, system_reset_idle_common) ; \
1: \
END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
#else
#define IDLETEST NOTEST
#endif
EXC_REAL_BEGIN(system_reset, 0x100, 0x200)
SET_SCRATCH0(r13)
#ifdef CONFIG_PPC_P7_NAP
BEGIN_FTR_SECTION
/* Running native on arch 2.06 or later, check if we are
* waking up from nap/sleep/winkle.
*/
mfspr r13,SPRN_SRR1
rlwinm. r13,r13,47-31,30,31
beq 9f
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
IDLETEST, 0x100)
cmpwi cr3,r13,2
GET_PACA(r13)
EXC_REAL_END(system_reset, 0x100, 0x200)
EXC_VIRT_NONE(0x4100, 0x4200)
#ifdef CONFIG_PPC_P7_NAP
EXC_COMMON_BEGIN(system_reset_idle_common)
bl pnv_restore_hyp_resource
li r0,PNV_THREAD_RUNNING
@ -130,14 +146,8 @@ BEGIN_FTR_SECTION
blt cr3,2f
b pnv_wakeup_loss
2: b pnv_wakeup_noloss
#endif
9:
END_FTR_SECTION_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
#endif /* CONFIG_PPC_P7_NAP */
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD,
NOTEST, 0x100)
EXC_REAL_END(system_reset, 0x100, 0x200)
EXC_VIRT_NONE(0x4100, 0x4200)
EXC_COMMON(system_reset_common, 0x100, system_reset_exception)
#ifdef CONFIG_PPC_PSERIES
@ -817,10 +827,8 @@ EXC_VIRT(trap_0b, 0x4b00, 0x4c00, 0xb00)
TRAMP_KVM(PACA_EXGEN, 0xb00)
EXC_COMMON(trap_0b_common, 0xb00, unknown_exception)
#define LOAD_SYSCALL_HANDLER(reg) \
ld reg,PACAKBASE(r13); \
ori reg,reg,(ABS_ADDR(system_call_common))@l;
#define LOAD_SYSCALL_HANDLER(reg) \
__LOAD_HANDLER(reg, system_call_common)
/* Syscall routine is used twice, in reloc-off and reloc-on paths */
#define SYSCALL_PSERIES_1 \

2
arch/powerpc/kernel/hw_breakpoint.c
View File

@ -275,7 +275,7 @@ int hw_breakpoint_handler(struct die_args *args)
if (!stepped) {
WARN(1, "Unable to handle hardware breakpoint. Breakpoint at "
"0x%lx will be disabled.", info->address);
perf_event_disable(bp);
perf_event_disable_inatomic(bp);
goto out;
}
/*

35
arch/powerpc/kernel/idle_book3s.S
View File

@ -90,6 +90,7 @@ ALT_FTR_SECTION_END_IFSET(CPU_FTR_ARCH_300)
* Threads will spin in HMT_LOW until the lock bit is cleared.
* r14 - pointer to core_idle_state
* r15 - used to load contents of core_idle_state
* r9 - used as a temporary variable
*/
core_idle_lock_held:
@ -99,6 +100,8 @@ core_idle_lock_held:
bne 3b
HMT_MEDIUM
lwarx r15,0,r14
andi. r9,r15,PNV_CORE_IDLE_LOCK_BIT
bne core_idle_lock_held
blr
/*
@ -163,12 +166,6 @@ _GLOBAL(pnv_powersave_common)
std r9,_MSR(r1)
std r1,PACAR1(r13)
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/* Tell KVM we're entering idle */
li r4,KVM_HWTHREAD_IN_IDLE
stb r4,HSTATE_HWTHREAD_STATE(r13)
#endif
/*
* Go to real mode to do the nap, as required by the architecture.
* Also, we need to be in real mode before setting hwthread_state,
@ -185,6 +182,26 @@ _GLOBAL(pnv_powersave_common)
.globl pnv_enter_arch207_idle_mode
pnv_enter_arch207_idle_mode:
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/* Tell KVM we're entering idle */
li r4,KVM_HWTHREAD_IN_IDLE
/******************************************************/
/* N O T E W E L L ! ! ! N O T E W E L L */
/* The following store to HSTATE_HWTHREAD_STATE(r13) */
/* MUST occur in real mode, i.e. with the MMU off, */
/* and the MMU must stay off until we clear this flag */
/* and test HSTATE_HWTHREAD_REQ(r13) in the system */
/* reset interrupt vector in exceptions-64s.S. */
/* The reason is that another thread can switch the */
/* MMU to a guest context whenever this flag is set */
/* to KVM_HWTHREAD_IN_IDLE, and if the MMU was on, */
/* that would potentially cause this thread to start */
/* executing instructions from guest memory in */
/* hypervisor mode, leading to a host crash or data */
/* corruption, or worse. */
/******************************************************/
stb r4,HSTATE_HWTHREAD_STATE(r13)
#endif
stb r3,PACA_THREAD_IDLE_STATE(r13)
cmpwi cr3,r3,PNV_THREAD_SLEEP
bge cr3,2f
@ -250,6 +267,12 @@ enter_winkle:
* r3 - requested stop state
*/
power_enter_stop:
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
/* Tell KVM we're entering idle */
li r4,KVM_HWTHREAD_IN_IDLE
/* DO THIS IN REAL MODE! See comment above. */
stb r4,HSTATE_HWTHREAD_STATE(r13)
#endif
/*
* Check if the requested state is a deep idle state.
*/

2
arch/powerpc/kernel/process.c
View File

@ -1012,7 +1012,7 @@ void restore_tm_state(struct pt_regs *regs)
/* Ensure that restore_math() will restore */
if (msr_diff & MSR_FP)
current->thread.load_fp = 1;
#ifdef CONFIG_ALIVEC
#ifdef CONFIG_ALTIVEC
if (cpu_has_feature(CPU_FTR_ALTIVEC) && msr_diff & MSR_VEC)
current->thread.load_vec = 1;
#endif

5
arch/powerpc/kernel/ptrace32.c
View File

@ -74,7 +74,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
break;
copied = access_process_vm(child, (u64)addrOthers, &tmp,
sizeof(tmp), 0);
sizeof(tmp), FOLL_FORCE);
if (copied != sizeof(tmp))
break;
ret = put_user(tmp, (u32 __user *)data);
@ -179,7 +179,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
break;
ret = 0;
if (access_process_vm(child, (u64)addrOthers, &tmp,
sizeof(tmp), 1) == sizeof(tmp))
sizeof(tmp),
FOLL_FORCE | FOLL_WRITE) == sizeof(tmp))
break;
ret = -EIO;
break;

1
arch/powerpc/kvm/book3s_hv_rm_xics.c
View File

@ -23,6 +23,7 @@
#include <asm/ppc-opcode.h>
#include <asm/pnv-pci.h>
#include <asm/opal.h>
#include <asm/smp.h>
#include "book3s_xics.h"

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