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9dd060afe2
linux/drivers
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Oleksandr Tyshchenko 9dd060afe2 xen/balloon: Bring alloc(free)_xenballooned_pages helpers back 
This patch rolls back some of the changes introduced by commit
121f2faca2 "xen/balloon: rename alloc/free_xenballooned_pages"
in order to make possible to still allocate xenballooned pages
if CONFIG_XEN_UNPOPULATED_ALLOC is enabled.

On Arm the unpopulated pages will be allocated on top of extended
regions provided by Xen via device-tree (the subsequent patches
will add required bits to support unpopulated-alloc feature on Arm).
The problem is that extended regions feature has been introduced
into Xen quite recently (during 4.16 release cycle). So this
effectively means that Linux must only use unpopulated-alloc on Arm
if it is running on "new Xen" which advertises these regions.
But, it will only be known after parsing the "hypervisor" node
at boot time, so before doing that we cannot assume anything.

In order to keep working if CONFIG_XEN_UNPOPULATED_ALLOC is enabled
and the extended regions are not advertised (Linux is running on
"old Xen", etc) we need the fallback to alloc_xenballooned_pages().

This way we wouldn't reduce the amount of memory usable (wasting
RAM pages) for any of the external mappings anymore (and eliminate
XSA-300) with "new Xen", but would be still functional ballooning
out RAM pages with "old Xen".

Also rename alloc(free)_xenballooned_pages to xen_alloc(free)_ballooned_pages
and make xen_alloc(free)_unpopulated_pages static inline in xen.h
if CONFIG_XEN_UNPOPULATED_ALLOC is disabled.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/1639080336-26573-4-git-send-email-olekstysh@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2022-01-06 09:53:35 +01:00
..
accessibility
acpi Merge branch 'acpi-properties' 2021-11-26 19:45:31 +01:00
amba ARM: 9119/1: amba: Properly handle device probe without IRQ domain 2021-10-19 10:30:53 +01:00
android binder: fix async_free_space accounting for empty parcels 2021-12-21 11:07:34 +01:00
ata libata: if T_LENGTH is zero, dma direction should be DMA_NONE 2021-12-17 09:32:13 +09:00
atm
auxdisplay auxdisplay: charlcd: checking for pointer reference before dereferencing 2021-11-24 11:46:52 +01:00
base PM: sleep: Fix error handling in dpm_prepare() 2021-12-17 18:36:08 +01:00
bcma pci-v5.16-changes 2021-11-06 14:36:12 -07:00
block xen/blkfront: harden blkfront against event channel storms 2021-12-16 08:24:08 +01:00
bluetooth TTY / Serial driver update for 5.16-rc1 2021-11-04 09:09:37 -07:00
bus Some new drivers changes for the Allwinner SoCs, fixing the shutdown 2021-12-17 16:04:54 +01:00
cdrom for-5.16/cdrom-2021-10-29 2021-11-01 10:09:14 -07:00
char Fix some IPMI crashes 2021-12-22 10:11:17 -08:00
clk clk: Don't parent clks until the parent is fully registered 2021-12-07 19:20:35 -08:00
clocksource clocksource/drivers/arm_arch_timer: Force inlining of erratum_set_next_event_generic() 2021-12-10 17:47:00 +01:00
comedi comedi: dt9812: fix DMA buffers on stack 2021-10-30 10:54:47 +02:00
connector
counter counter: Fix use-after-free race condition for events_queue_size write 2021-10-21 13:02:47 +02:00
cpufreq cpufreq: Fix a comment in cpufreq_policy_free 2021-12-01 20:02:11 +01:00
cpuidle ARM: SoC drivers for 5.16 2021-11-03 17:00:52 -07:00
crypto crypto: qat - do not handle PFVF sources for qat_4xxx 2021-12-17 13:11:54 +11:00
cxl cxl for v5.16 2021-11-08 11:49:48 -08:00
dax
dca
devfreq Merge branches 'pm-opp' and 'pm-cpufreq' 2021-11-10 14:06:51 +01:00
dio
dma dmaengine: st_fdma: fix MODULE_ALIAS 2021-12-13 13:18:48 +05:30
dma-buf dma-buf: system_heap: Use 'for_each_sgtable_sg' in pages free flow 2021-12-01 15:30:10 +05:30
edac - amd64_edac: Add support for three-rank interleaving mode which is 2021-11-01 15:02:49 -07:00
eisa
extcon extcon: usbc-tusb320: Add support for TUSB320L 2021-10-27 14:13:39 +09:00
firewire SCSI misc on 20211105 2021-11-05 08:42:02 -07:00
firmware firmware: arm_scpi: Fix string overflow in SCPI genpd driver 2021-12-13 15:17:37 +01:00
fpga
fsi fsi: sbefifo: Use interruptible mutex locking 2021-10-22 09:54:33 +10:30
gnss
gpio gpio: virtio: remove timeout 2021-12-21 16:22:58 +01:00
gpu Merge branch 'drm-misc-fixes' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes 2021-12-31 11:40:29 +10:00
greybus
hid HID: potential dereference of null pointer 2021-12-20 11:26:14 +01:00
hsi HSI changes for the 5.16 series 2021-11-04 13:56:55 -07:00
hv hv: utils: add PTP_1588_CLOCK to Kconfig to fix build 2021-11-28 21:22:35 +00:00
hwmon hwmon: (lm90) Do not report 'busy' status bit as alarm 2021-12-12 16:22:53 -08:00
hwspinlock
hwtracing coresight: trbe: Work around write to out of range 2021-10-27 11:46:01 -06:00
i2c i2c: validate user data in compat ioctl 2021-12-31 14:28:22 +01:00
i3c
idle
iio iio: trigger: stm32-timer: fix MODULE_ALIAS 2021-12-04 15:37:02 +00:00
infiniband RDMA/hns: Replace kfree() with kvfree() 2021-12-14 20:13:29 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2022-01-01 10:21:49 -08:00
interconnect
iommu iommu/vt-d: Fix unmap_pages support 2021-11-26 22:54:47 +01:00
ipack ipack: ipoctal: rename tty-driver pointer 2021-10-04 11:21:24 +02:00
irqchip irqchip/irq-bcm7120-l2: Add put_device() after of_find_device_by_node() 2021-12-10 13:23:13 +00:00
isdn mISDN: change function names to avoid conflicts 2021-12-28 12:12:04 +00:00
leds
macintosh Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
mailbox mailbox: imx: support i.MX8ULP S4 MU 2021-10-29 23:03:09 -05:00
mcb
md block-5.16-2021-12-17 2021-12-17 11:46:07 -08:00
media media fixes for v5.16-rc3 2021-11-22 14:58:57 -08:00
memory memory: mtk-smi: Fix a null dereference for the ostd 2021-11-25 14:46:00 +01:00
memstick memstick: r592: Fix a UAF bug when removing the driver 2021-10-19 13:04:42 +02:00
message pci-v5.16-changes 2021-11-06 14:36:12 -07:00
mfd chrome platform changes for 5.16 2021-11-10 11:36:43 -08:00
misc misc: rtsx: Avoid mangling IRQ during runtime PM 2021-12-03 14:32:00 +01:00
mmc mmc: mmci: stm32: clear DLYB_CR after sending tuning command 2021-12-21 13:03:51 +01:00
most most: fix control-message timeouts 2021-10-26 19:12:01 +02:00
mtd Revert "mtd_blkdevs: don't scan partitions for plain mtdblock" 2021-12-10 11:52:34 -07:00
mux mux: add support for delay after muxing 2021-10-21 20:02:42 +01:00
net fsl/fman: Fix missing put_device() call in fman_port_probe 2021-12-30 13:34:06 +00:00
nfc NFC: st21nfca: Fix memory leak in device probe and remove 2021-12-28 12:40:20 +00:00
ntb
nubus
nvdimm libnvdimm for v5.16 2021-11-10 10:56:02 -08:00
nvme nvmet-tcp: fix possible list corruption for unexpected command failure 2021-12-08 16:36:58 +01:00
nvmem Merge 5.15-rc6 into char-misc-next 2021-10-18 09:29:27 +02:00
of of/irq: Add a quirk for controllers with their own definition of interrupt-map 2021-12-03 11:30:22 -06:00
opp
parisc
parport
pci - Clear the PCI_MSIX_FLAGS_MASKALL bit too on the error path so that it 2021-12-19 12:28:46 -08:00
pcmcia Core: 2021-11-02 06:20:58 -07:00
perf ACPI updates for 5.16-rc1 2021-11-02 15:58:39 -07:00
phy phy: HiSilicon: Fix copy and paste bug in error handling 2021-11-23 10:42:13 +05:30
pinctrl pinctrl: stm32: consider the GPIO offset to expose all the GPIO lines 2021-12-16 04:14:56 +01:00
platform platform-drivers-x86 for v5.16-4 2021-12-24 08:58:23 -08:00
pnp
power power: supply: bq25890: Fix initial setting of the F_CONV_RATE field 2021-11-02 16:48:47 +01:00
powercap powercap: DTPM: Drop unused local variable from init_dtpm() 2021-12-03 17:51:59 +01:00
pps pps: clients: parport: Switch to use module_parport_driver() 2021-07-29 17:29:14 +02:00
ps3
ptp ptp: ocp: Fix a couple NULL vs IS_ERR() checks 2021-11-18 12:12:55 +00:00
pwm pwm: vt8500: Rename pwm_busy_wait() to make it obviously driver-specific 2021-11-05 11:57:13 +01:00
rapidio rapidio: avoid bogus __alloc_size warning 2021-11-06 13:30:33 -07:00
ras
regulator - Remove Drivers 2021-11-08 12:07:52 -08:00
remoteproc remoteproc: Remove vdev_to_rvdev and vdev_to_rproc from remoteproc API 2021-10-15 09:49:55 -05:00
reset reset: tegra-bpmp: Revert Handle errors in BPMP response 2021-11-17 17:22:27 +01:00
rpmsg remoteproc updates for v5.16 2021-11-10 09:07:26 -08:00
rtc RTC for 5.16 2021-11-12 11:44:31 -08:00
s390 s390: replace snprintf in show functions with sysfs_emit 2021-11-16 12:29:19 +01:00
sbus
scsi SCSI fixes on 20211231 2021-12-31 09:22:25 -08:00
sh
siox
slimbus
soc soc/tegra: Fixes for v5.16-rc6 2021-12-16 15:02:26 +01:00
soundwire soundwire: qcom: add debugfs entry for soundwire register dump 2021-10-20 20:54:59 +05:30
spi spi: Fix for v5.16 2021-12-20 10:23:19 -08:00
spmi
ssb
staging staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() 2021-11-17 14:08:57 +01:00
target scsi: target: configfs: Delete unnecessary checks for NULL 2021-11-18 23:07:02 -05:00
tc
tee ARM: SoC fixes for 5.16, part 4 2021-12-23 09:22:34 -08:00
thermal thermal: int340x: Fix VCoRefLow MMIO bit offset for TGL 2021-12-08 15:29:22 +01:00
thunderbolt thunderbolt: Changes for v5.16 merge window 2021-10-25 13:17:29 +02:00
tty Merge branch 'xsa' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip 2021-12-20 07:42:21 -08:00
uio Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM 2021-10-28 11:22:23 +00:00
usb usb: typec: ucsi: Only check the contract if there is a connection 2021-12-21 16:30:53 +01:00
vdpa vdpa: Consider device id larger than 31 2021-12-08 15:41:50 -05:00
vfio vfio/pci: Fix OpRegion read 2021-11-30 11:41:49 -07:00
vhost vdpa: check that offsets are within bounds 2021-12-08 14:53:15 -05:00
video TTY/Serial fixes for 5.16-rc4 2021-12-05 09:13:20 -08:00
virt nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert 2021-12-21 11:08:19 +01:00
virtio virtio_ring: Fix querying of maximum DMA mapping size for virtio device 2021-12-08 15:04:06 -05:00
visorbus
vlynq
vme
w1
watchdog linux-watchdog 5.16-rc1 tag 2021-11-10 09:41:22 -08:00
xen xen/balloon: Bring alloc(free)_xenballooned_pages helpers back 2022-01-06 09:53:35 +01:00
zorro
Kconfig
Makefile virtio: always enter drivers/virtio/ 2021-12-08 14:53:15 -05:00