Michael Kelley 6941f67ad3 hv_netvsc: Calculate correct ring size when PAGE_SIZE is not 4 Kbytes ... Current code in netvsc_drv_init() incorrectly assumes that PAGE_SIZE is 4 Kbytes, which is wrong on ARM64 with 16K or 64K page size. As a result, the default VMBus ring buffer size on ARM64 with 64K page size is 8 Mbytes instead of the expected 512 Kbytes. While this doesn't break anything, a typical VM with 8 vCPUs and 8 netvsc channels wastes 120 Mbytes (8 channels * 2 ring buffers/channel * 7.5 Mbytes/ring buffer). Unfortunately, the module parameter specifying the ring buffer size is in units of 4 Kbyte pages. Ideally, it should be in units that are independent of PAGE_SIZE, but backwards compatibility prevents changing that now. Fix this by having netvsc_drv_init() hardcode 4096 instead of using PAGE_SIZE when calculating the ring buffer size in bytes. Also use the VMBUS_RING_SIZE macro to ensure proper alignment when running with page size larger than 4K. Cc: <stable@vger.kernel.org> # 5.15.x Fixes: 7aff79e297 ("Drivers: hv: Enable Hyper-V code to be built on ARM64") Signed-off-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/20240122162028.348885-1-mhklinux@outlook.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2024-01-23 17:19:42 -08:00
..
accel	drm-next for 6.8:	2024-01-12 11:32:19 -08:00
accessibility
acpi	cxl for v6.8	2024-01-18 16:22:43 -08:00
amba
android	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
ata
atm
auxdisplay	drm-next for 6.8:	2024-01-12 11:32:19 -08:00
base	RTC for 6.8	2024-01-18 17:25:39 -08:00
bcma
block
bluetooth	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
bus	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
cache
cdrom
cdx
char	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
clk	Only a couple new SoCs have support added this time, primarily for Qualcomm	2024-01-12 13:42:35 -08:00
clocksource
comedi
connector
counter
cpufreq	Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-qos' into pm	2024-01-16 12:23:24 +01:00
cpuidle
crypto
cxl	cxl/core: use sysfs_emit() for attr's _show()	2024-01-12 14:47:04 -08:00
dax
dca
devfreq
dio
dma	IOMMU Updates for Linux v6.8	2024-01-18 15:16:57 -08:00
dma-buf
dpll	dpll: fix register pin with unregistered parent pin	2024-01-22 11:01:11 +00:00
edac	Driver core changes for 6.8-rc1	2024-01-18 09:48:40 -08:00
eisa
extcon
firewire
firmware	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
fpga	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
fsi
gnss	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
gpio	gpio fixes for v6.8-rc1	2024-01-18 17:03:51 -08:00
gpu	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
greybus	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
hid	hid-for-linus-2024010801	2024-01-12 14:45:13 -08:00
hsi
hte
hv
hwmon	hwmon: (npcm750-pwm-fan) Fix crash observed when instantiating nuvoton,npcm750-pwm-fan	2024-01-14 07:44:38 -08:00
hwspinlock
hwtracing
i2c	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
i3c
idle
iio	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
infiniband	RDMA v6.8 merge window	2024-01-12 13:52:21 -08:00
input	Input updates for 6.8 merge window:	2024-01-18 17:21:35 -08:00
interconnect	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
iommu	iommufd for 6.8	2024-01-18 15:28:15 -08:00
ipack	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
irqchip
isdn
leds	- New Drivers	2024-01-17 15:25:27 -08:00
macintosh
mailbox	mediatek: add CMDQ support for mt8188	2024-01-17 15:39:32 -08:00
mcb
md
media	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
memory	IOMMU Updates for Linux v6.8	2024-01-18 15:16:57 -08:00
memstick
message
mfd	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
misc	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
mmc	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
most
mtd	This pull request contains updates for UBI and UBIFS:	2024-01-17 10:27:13 -08:00
mux
net	hv_netvsc: Calculate correct ring size when PAGE_SIZE is not 4 Kbytes	2024-01-23 17:19:42 -08:00
nfc
ntb
nubus
nvdimm	virtio: features, fixes	2024-01-18 16:44:03 -08:00
nvme
nvmem	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
of	IOMMU Updates for Linux v6.8	2024-01-18 15:16:57 -08:00
opp
parisc
parport
pci	cxl for v6.8	2024-01-18 16:22:43 -08:00
pcmcia
peci
perf
phy	phy-for-6.8	2024-01-18 17:11:43 -08:00
pinctrl	This is the main pin control pull request for the v6.8 kernel series.	2024-01-17 15:55:33 -08:00
platform	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
pmdomain	Driver core changes for 6.8-rc1	2024-01-18 09:48:40 -08:00
pnp	More ACPI updates for 6.8-rc1	2024-01-17 14:37:40 -08:00
power
powercap
pps
ps3
ptp
pwm	pwm: jz4740: Don't use dev_err_probe() in .request()	2024-01-12 18:25:05 +01:00
rapidio
ras
regulator	pwm: Changes for v6.8-rc1	2024-01-12 14:59:50 -08:00
remoteproc
reset
rpmsg
rtc	rtc: nuvoton: Compatible with NCT3015Y-R and NCT3018Y-R	2024-01-18 01:05:33 +01:00
s390	s390 updates for 6.8 merge window part 2	2024-01-18 14:11:25 -08:00
sbus
scsi	virtio: features, fixes	2024-01-18 16:44:03 -08:00
sh
siox
slimbus
soc	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
soundwire	soundwire updates for 6.7	2024-01-18 17:08:31 -08:00
spi
spmi
ssb
staging	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
target
tc
tee	Another moderately busy cycle for documentation, including:	2024-01-11 19:46:52 -08:00
thermal	More thermal control updates for 6.8-rc1	2024-01-17 14:47:33 -08:00
thunderbolt	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
tty	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
ufs
uio
usb	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
vdpa	virtio: features, fixes	2024-01-18 16:44:03 -08:00
vfio	VFIO updates for v6.8-rc1	2024-01-18 15:57:25 -08:00
vhost	virtio: features, fixes	2024-01-18 16:44:03 -08:00
video	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
virt	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
virtio	virtio: features, fixes	2024-01-18 16:44:03 -08:00
w1
watchdog	linux-watchdog 6.8-rc1 tag	2024-01-12 13:32:30 -08:00
xen	xen: branch for v6.8-rc1	2024-01-17 13:41:38 -08:00
zorro
Kconfig
Makefile	fbdev/intelfb: Remove driver	2024-01-12 12:38:37 +01:00