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OpenCloudOS-Kernel
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Logan Gunthorpe 7e9c7ef83d PCI/P2PDMA: Allow userspace VMA allocations through sysfs 
Create a sysfs bin attribute called "allocate" under the existing
"p2pmem" group. The only allowable operation on this file is the mmap()
call.

When mmap() is called on this attribute, the kernel allocates a chunk of
memory from the genalloc and inserts the pages into the VMA. The
dev_pagemap .page_free callback will indicate when these pages are no
longer used and they will be put back into the genalloc.

On device unbind, remove the sysfs file before the memremap_pages are
cleaned up. This ensures unmap_mapping_range() is called on the files
inode and no new mappings can be created.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20221021174116.7200-9-logang@deltatee.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2022-11-09 11:29:21 -07:00
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accessibility
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acpi ACPI fixes for 6.1-rc2 2022-10-21 18:08:30 -07:00
amba
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android Scheduler changes for v6.1: 2022-10-10 09:10:28 -07:00
ata ata: ahci_qoriq: Fix compilation warning 2022-10-18 08:02:14 +09:00
atm
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auxdisplay
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base Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
bcma Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
block block: set the disk capacity to 0 in blk_mark_disk_dead 2022-11-02 08:32:31 -06:00
bluetooth
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bus Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
cdrom
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char This push fixes an issue exposed by the recent change to feed 2022-10-17 10:20:04 -07:00
clk This is the final part of the clk patches for this merge window. 2022-10-16 11:08:19 -07:00
clocksource A boring time, timekeeping, timers update: 2022-10-10 10:16:00 -07:00
comedi
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connector
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counter gpio updates for v6.1-rc1 2022-10-08 09:46:29 -07:00
cpufreq cpufreq: sun50i: Switch to use dev_err_probe() helper 2022-10-18 16:22:26 +05:30
cpuidle RISC-V Patches for the 6.1 Merge Window, Part 1 2022-10-09 13:24:01 -07:00
crypto This update includes the following changes: 2022-10-10 13:04:25 -07:00
cxl
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dax libnvdimm for 6.1 2022-10-14 18:41:41 -07:00
dca
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devfreq
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dio
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dma treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
dma-buf whack-a-mole: cropped up open-coded file_inode() uses... 2022-10-06 17:22:11 -07:00
edac Merge patch series "Use composable cache instead of L2 cache" 2022-10-13 11:07:13 -07:00
eisa
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extcon Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
firewire
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firmware efi: runtime: Don't assume virtual mappings are missing if VA == PA == 0 2022-10-21 11:09:41 +02:00
fpga Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
fsi fsi: core: Check error number after calling ida_simple_get 2022-09-28 21:10:57 +09:30
gnss
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gpio Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
gpu 17 hotfixes, mainly for MM. 5 are cc:stable and the remainder address 2022-10-21 12:33:03 -07:00
greybus
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hid for-linus-2022102101 2022-10-21 17:41:57 -07:00
hsi
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hte
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hv hyperv-next for 6.1 2022-10-10 13:59:01 -07:00
hwmon - Use the correct CPU capability clearing function on the error path in 2022-10-23 10:01:34 -07:00
hwspinlock
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hwtracing Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
i2c i2c: mlxbf: depend on ACPI; clean away ifdeffage 2022-10-21 07:59:35 +02:00
i3c i3c: master: Remove the wrong place of reattach. 2022-10-12 23:45:29 +02:00
idle
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iio Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
infiniband treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
input Input updates for 6.1 merge window: 2022-10-11 10:53:25 -07:00
interconnect
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iommu iommu/vt-d: Clean up si_domain in the init_dmars() error path 2022-10-21 10:49:35 +02:00
ipack Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
irqchip Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
isdn mISDN: hfcpci: Fix use-after-free bug in hfcpci_softirq 2022-10-09 19:11:54 +01:00
leds This is very quiet release for LEDs, pca963 got blinking support and 2022-10-14 13:14:03 -07:00
macintosh powerpc updates for 6.1 2022-10-09 14:05:15 -07:00
mailbox mailbox: qcom-ipcc: flag IRQ NO_THREAD 2022-10-05 21:51:58 -05:00
mcb
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md dm clone: Fix typo in block_device format specifier 2022-10-18 17:17:48 -04:00
media media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
memory
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memstick
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message
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mfd Revert "mfd: syscon: Remove repetition of the regmap_get_val_endian()" 2022-10-23 12:04:56 -07:00
misc treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
mmc Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
most
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mtd Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
mux
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net Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
nfc
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ntb
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nubus
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nvdimm libnvdimm for 6.1 2022-10-14 18:41:41 -07:00
nvme nvme: use blk_mq_[un]quiesce_tagset 2022-11-02 08:35:34 -06:00
nvmem
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of Devicetree updates for v6.1: 2022-10-10 13:13:51 -07:00
opp
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parisc parisc architecture fixes and updates for kernel v6.1-rc1: 2022-10-14 12:10:01 -07:00
parport
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pci PCI/P2PDMA: Allow userspace VMA allocations through sysfs 2022-11-09 11:29:21 -07:00
pcmcia
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peci
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perf arm64 fixes: 2022-10-14 12:38:03 -07:00
phy pci-v6.1-changes 2022-10-11 11:08:18 -07:00
pinctrl Interrupt subsystem updates: 2022-10-12 10:23:24 -07:00
platform LoongArch changes for v6.1 2022-10-12 10:35:20 -07:00
pnp Merge branches 'acpi-apei', 'acpi-wakeup', 'acpi-reboot' and 'acpi-thermal' 2022-10-10 18:11:11 +02:00
power power supply and reset changes for the v6.1 series 2022-10-07 11:48:30 -07:00
powercap Scheduler changes for v6.1: 2022-10-10 09:10:28 -07:00
pps
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ps3
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ptp ] ptp: ocp: remove symlink for second GNSS 2022-10-10 08:37:24 +01:00
pwm pwm: Changes for v6.1-rc1 2022-10-07 11:32:10 -07:00
rapidio
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ras
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regulator - Core Frameworks 2022-10-07 11:24:20 -07:00
remoteproc remoteproc: virtio: Fix warning on bindings by removing the of_match_table 2022-10-05 09:20:44 -06:00
reset Here's the main clk pull request for this merge window. We have some 2022-10-08 10:06:48 -07:00
rpmsg
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rtc RTC for 6.1 2022-10-14 18:36:42 -07:00
s390 s390 updates for the 6.1 merge window #2 2022-10-14 11:36:05 -07:00
sbus
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scsi blk-mq: pass a tagset to blk_mq_wait_quiesce_done 2022-11-02 08:35:34 -06:00
sh
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siox
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slimbus
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soc Merge patch series "Use composable cache instead of L2 cache" 2022-10-13 11:07:13 -07:00
soundwire soundwire updates for 6.1-rc1 2022-10-07 16:13:55 -07:00
spi spi: Updates for v6.1 2022-10-04 19:36:53 -07:00
spmi spmi: pmic-arb: increase SPMI transaction timeout delay 2022-09-30 14:33:23 +02:00
ssb
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staging media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
target treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
tc
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tee - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
thermal thermal: intel_powerclamp: Use first online CPU as control_cpu 2022-10-15 19:33:57 +02:00
thunderbolt treewide: use get_random_u32() when possible 2022-10-11 17:42:58 -06:00
tty parisc architecture fixes and updates for kernel v6.1-rc1: 2022-10-14 12:10:01 -07:00
ufs blk-mq: move the call to blk_put_queue out of blk_mq_destroy_queue 2022-10-25 08:25:10 -06:00
uio
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usb - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
vdpa virtio: fixes, features 2022-10-10 14:02:53 -07:00
vfio VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
vhost virtio: fixes, features 2022-10-10 14:02:53 -07:00
video Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
virt Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
virtio virtio_pci: use irq to detect interrupt support 2022-10-13 09:33:03 -04:00
vlynq
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w1 Char/Misc and other driver changes for 6.1-rc1 2022-10-08 08:56:37 -07:00
watchdog linux-watchdog 6.1-rc2 tag 2022-10-21 12:25:39 -07:00
xen xen: branch for v6.1-rc2 2022-10-21 14:43:09 -07:00
zorro
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Kconfig
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Makefile
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