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David Hildenbrand 4c89792ea0 mm: rename vm_ops->find_special_page() to vm_ops->find_normal_page() 
...  and hide it behind a kconfig option.  There is really no need for any
!xen code to perform this check.

The naming is a bit off: we want to find the "normal" page when a PTE was
marked "special".  So it's really not "finding a special" page.

Improve the documentation, and add a comment in the code where XEN ends up
performing the pte_mkspecial() through a hypercall.  More details can be
found in commit 923b2919e2 ("xen/gntdev: mark userspace PTEs as special
on x86 PV guests").

Link: https://lkml.kernel.org/r/20250811112631.759341-12-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Juegren Gross <jgross@suse.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mariano Pache <npache@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-09-13 16:54:53 -07:00
..
accel Merge drm/drm-fixes into drm-misc-fixes 2025-08-20 16:08:49 +02:00
accessibility
acpi Merge branches 'acpi-apei' and 'acpi-pfrut' 2025-08-21 20:47:23 +02:00
amba
android Char / Misc / IIO / other driver updates for 6.17-rc1 2025-07-29 09:52:01 -07:00
ata ata: ahci_xgene: Use int type for 'rc' to store error codes 2025-08-28 13:36:14 +09:00
atm atm: atmtcp: Prevent arbitrary write in atmtcp_recv_control(). 2025-08-22 17:23:15 -07:00
auxdisplay
base PM: sleep: annotate RCU list iterations 2025-08-26 15:27:04 +02:00
bcma treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
block zram: protect recomp_algorithm_show() with ->init_lock 2025-09-13 16:54:43 -07:00
bluetooth Bluetooth: btnxpuart: Uses threaded IRQ for host wakeup handling 2025-08-15 10:13:26 -04:00
bus soc: driver updates for 6.17 2025-07-29 11:13:27 -07:00
cache
cdrom cdrom: Call cdrom_mrw_exit from cdrom_release function 2025-07-22 19:10:17 -06:00
cdx cdx: Fix off-by-one error in cdx_rpmsg_probe() 2025-08-19 12:55:16 +02:00
char /dev/zero: try to align PMD_SIZE for private mapping 2025-09-13 16:54:42 -07:00
clk This is the usual collection of primarily clk driver updates. The big part of 2025-07-31 13:36:27 -07:00
clocksource A treewide cleanup of struct cycle_counter const annotations: 2025-07-29 14:02:53 -07:00
comedi comedi: Make insn_rw_emulate_bits() do insn->n samples 2025-08-19 12:57:01 +02:00
connector
counter
cpufreq cpufreq: intel_pstate: Support Clearwater Forest OOB mode 2025-08-11 21:49:47 +02:00
cpuidle cpuidle: governors: menu: Avoid selecting states with too much latency 2025-08-18 19:04:25 +02:00
crypto This update includes the following changes: 2025-07-31 09:45:28 -07:00
cxl Significant patch series in this pull request: 2025-08-03 16:23:09 -07:00
dax
dca
devfreq PM / devfreq: Add HiSilicon uncore frequency scaling driver 2025-07-14 20:23:57 +09:00
dio
dma dmaengine updates for v6.17 2025-08-01 12:35:12 -07:00
dma-buf drm for 6.17-rc1 2025-07-30 19:26:49 -07:00
dpll dpll: zl3073x: ZL3073X_I2C and ZL3073X_SPI should depend on NET 2025-08-04 17:22:55 -07:00
edac - i10nm: 2025-07-29 16:30:38 -07:00
eisa
extcon
firewire firewire: core: reallocate buffer for FCP address handlers when more than 4 are registered 2025-08-03 21:20:15 +09:00
firmware efi: stmm: Drop unneeded null pointer check 2025-08-26 14:49:42 +02:00
fpga fpga: zynq_fpga: Fix the wrong usage of dma_map_sgtable() 2025-08-19 12:54:45 +02:00
fsi Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
fwctl
gnss
gpio gpio fixes for v6.17-rc4 2025-08-31 08:49:55 -07:00
gpu Mediatek DRM Fixes - 20250829 2025-08-29 10:05:10 +10:00
greybus
hid hid-for-linus-2025082901 2025-08-29 07:44:14 -07:00
hsi
hte
hv ARM: 2025-07-30 17:14:01 -07:00
hwmon treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
hwspinlock
hwtracing
i2c i2c: rtl9300: Add missing count byte for SMBus Block Ops 2025-08-19 20:21:03 -01:00
i3c i3c: add missing include to internal header 2025-07-31 02:25:17 +02:00
idle intel_idle: Allow loading ACPI tables for any family 2025-08-11 21:43:26 +02:00
iio iio: pressure: bmp280: Use IS_ERR() in bmp280_common_probe() 2025-08-18 19:22:18 +01:00
infiniband RDMA/hns: Fix dip entries leak on devices newer than hip09 2025-08-13 07:22:18 -04:00
input treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
interconnect Char / Misc / IIO / other driver updates for 6.17-rc1 2025-07-29 09:52:01 -07:00
iommu iommufd 6.17 first rc pull 2025-08-22 17:24:48 -04:00
ipack
irqchip irqchip/gic-v5: Remove undue WARN_ON()s in the IRS affinity parsing 2025-08-24 12:54:06 +02:00
isdn mISDN: hfcpci: Fix warning when deleting uninitialized timer 2025-08-25 17:15:01 -07:00
leds treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
macintosh
mailbox mailbox/pcc: support mailbox management of the shared buffer 2025-08-07 23:49:56 -05:00
mcb mcb: use sysfs_emit_at() instead of scnprintf() in show functions 2025-07-16 14:17:07 +02:00
md md: fix sync_action incorrect display during resync 2025-08-16 08:52:33 +08:00
media media: Remove redundant pm_runtime_mark_last_busy() calls 2025-08-18 09:55:08 +02:00
memory Memory controller drivers for v6.17 2025-07-22 22:47:00 +02:00
memstick memstick: Fix deadlock by moving removing flag earlier 2025-08-18 12:01:20 +02:00
message
mfd treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
misc treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
mmc mmc: sdhci_am654: Disable HS400 for AM62P SR1.0 and SR1.1 2025-08-21 11:07:16 +02:00
most most: core: Drop device reference after usage in get_channel() 2025-08-19 12:57:34 +02:00
mtd * MTD changes: 2025-07-31 13:43:02 -07:00
mux hardening updates for v6.17-rc1 2025-07-28 17:16:12 -07:00
net Including fixes from Bluetooth. 2025-08-28 17:35:51 -07:00
nfc
ntb
nubus
nvdimm Summary of significant series in this pull request: 2025-07-31 14:57:54 -07:00
nvme nvmet: exit debugfs after discovery subsystem exits 2025-08-07 06:27:58 -06:00
nvmem Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
of 17 hotfixes. 13 are cc:stable and the remainder address post-6.16 issues 2025-09-02 13:18:00 -07:00
opp
parisc parisc/power: Move soft-power into power.c 2025-07-23 11:52:48 +02:00
parport
pci PCI: vmd: Remove MSI-X check on child devices 2025-08-12 13:45:01 -05:00
pcmcia
peci
perf drivers/perf: hisi: Support PMUs with no interrupt 2025-07-14 15:42:16 +01:00
phy phy-for-6.17 2025-08-01 12:31:50 -07:00
pinctrl pinctrl: airoha: Fix return value in pinconf callbacks 2025-08-22 15:08:58 +02:00
platform [GIT PULL for v6.17-rc4] media fixes 2025-08-27 10:10:50 -07:00
pmdomain pmdomain: qcom: rpmhpd: Add Glymur RPMh Power Domains 2025-07-23 12:12:16 +02:00
pnp
power power supply and reset changes for the 6.17 series 2025-07-31 21:39:01 -07:00
powercap platform-drivers-x86 for v6.17-1 2025-07-28 23:21:28 -07:00
pps
ps3
ptp ptp: prevent possible ABBA deadlock in ptp_clock_freerun() 2025-08-12 14:17:35 -07:00
pwm treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
rapidio
ras
regulator regulator: pm8008: fix probe failure due to negative voltage selector 2025-08-24 22:41:04 +01:00
remoteproc remoteproc updates for v6.17 2025-08-01 15:02:25 -07:00
reset This is the usual collection of primarily clk driver updates. The big part of 2025-07-31 13:36:27 -07:00
rpmsg remoteproc updates for v6.17 2025-08-01 15:02:25 -07:00
rtc RTC for 6.17 2025-08-03 20:17:34 -07:00
s390 s390/sclp: Fix SCCB present check 2025-08-20 16:37:27 +02:00
sbus
scsi scsi: qla4xxx: Prevent a potential error pointer dereference 2025-08-14 23:22:46 -04:00
sh
siox
slimbus
soc Merge tag 'drm-msm-fixes-2025-08-26' of https://gitlab.freedesktop.org/drm/msm into drm-fixes 2025-08-29 09:05:18 +10:00
soundwire soundwire updates for 6.17 2025-08-01 11:09:27 -07:00
spi spi: Fixes for v6.17 2025-08-21 16:28:00 -04:00
spmi
ssb treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
staging treewide: rename GPIO set callbacks back to their original names 2025-08-07 10:07:06 +02:00
target SCSI misc on 20250806 2025-08-06 15:44:25 +03:00
tc
tee
thermal Driver core changes for 6.17-rc1 2025-07-29 12:15:39 -07:00
thunderbolt thunderbolt: Fix copy+paste error in match_service_id() 2025-07-21 16:33:43 +02:00
tty module: Rename EXPORT_SYMBOL_GPL_FOR_MODULES to EXPORT_SYMBOL_FOR_MODULES 2025-08-11 16:16:36 +02:00
ufs scsi: ufs: ufs-qcom: Fix ESI null pointer dereference 2025-08-18 22:25:52 -04:00
uio
usb usb: xhci: fix host not responding after suspend and resume 2025-08-19 16:12:13 +02:00
vdpa vdpa: Fix IDR memory leak in VDUSE module exit 2025-08-01 09:11:08 -04:00
vfio VFIO updates for v6.17-rc1 v2 2025-08-07 07:32:50 +03:00
vhost vhost/net: Protect ubufs with rcu read lock in vhost_net_ubuf_put() 2025-08-26 03:38:10 -04:00
video gpio updates for v6.17-rc1 2025-08-09 08:15:43 +03:00
virt virt: sev-guest: Satisfy linear mapping requirement in get_derived_key() 2025-08-15 17:05:39 +02:00
virtio treewide: remove MIGRATEPAGE_SUCCESS 2025-09-13 16:54:50 -07:00
w1
watchdog watchdog: sbsa: Adjust keepalive timeout to avoid MediaTek WS0 race condition 2025-07-28 12:07:08 +02:00
xen mm: rename vm_ops->find_special_page() to vm_ops->find_normal_page() 2025-09-13 16:54:53 -07:00
zorro
Kconfig drm for 6.17-rc1 2025-07-30 19:26:49 -07:00
Makefile