Yongji Xie 05f0c03fba vfio-pci: Allow to mmap sub-page MMIO BARs if the mmio page is exclusive ... Current vfio-pci implementation disallows to mmap sub-page(size < PAGE_SIZE) MMIO BARs because these BARs' mmio page may be shared with other BARs. This will cause some performance issues when we passthrough a PCI device with this kind of BARs. Guest will be not able to handle the mmio accesses to the BARs which leads to mmio emulations in host. However, not all sub-page BARs will share page with other BARs. We should allow to mmap the sub-page MMIO BARs which we can make sure will not share page with other BARs. This patch adds support for this case. And we try to add a dummy resource to reserve the remainder of the page which hot-add device's BAR might be assigned into. But it's not necessary to handle the case when the BAR is not page aligned. Because we can't expect the BAR will be assigned into the same location in a page in guest when we passthrough the BAR. And it's hard to access this BAR in userspace because we have no way to get the BAR's location in a page. Signed-off-by: Yongji Xie <xyjxie@linux.vnet.ibm.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>		2016-07-08 10:06:04 -06:00
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accessibility	…
acpi	Merge branch 'acpica-fixes'	2016-06-18 01:55:55 +02:00
amba	…
android	…
ata	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
atm	atm: iphase: off by one in rx_pkt()	2016-05-31 11:52:59 -07:00
auxdisplay	…
base	Driver core fixes for 4.7-rc4	2016-06-18 06:04:01 -10:00
bcma	MTD updates for v4.7:	2016-05-24 11:00:20 -07:00
block	Merge branch 'stable/for-jens-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-linus	2016-06-09 09:49:55 -06:00
bluetooth	…
bus	…
cdrom	…
char	ipmi: Remove smi_msg from waiting_rcv_msgs list before handle_one_recv_msg()	2016-06-13 08:56:28 -05:00
clk	clk: nxp: Select MFD_SYSCON for creg driver	2016-06-01 15:14:06 -07:00
clocksource	…
connector	…
cpufreq	cpufreq: intel_pstate: Adjust _PSS[0] freqeuency if needed	2016-06-15 01:56:47 +02:00
cpuidle	…
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2016-05-30 15:20:18 -07:00
dax	/dev/dax, core: file operations and dax-mmap	2016-05-20 22:02:55 -07:00
dca	…
devfreq	…
dio	…
dma	dmaengine: mv_xor: Fix incorrect offset in dma_map_page()	2016-06-07 12:44:23 +05:30
dma-buf	dma-buf: use vma_pages()	2016-05-31 22:17:05 +05:30
edac	EDAC, sb_edac: Readd accidentally dropped Broadwell-D support	2016-06-03 17:28:21 +02:00
eisa	…
extcon	extcon: palmas: Fix boot up state of VBUS when using GPIO detection	2016-06-15 17:17:22 +09:00
firewire	…
firmware	efi/arm: Fix the format of EFI debug messages	2016-06-03 09:57:36 +02:00
fmc	…
fpga	…
gpio	gpio: Allow PC/104 devices on X86_64	2016-06-17 20:21:12 -07:00
gpu	Merge tag 'drm-fixes-for-v4.7-rc4' of git://people.freedesktop.org/~airlied/linux	2016-06-15 19:54:52 -10:00
hid	HID: multitouch: Add MT_QUIRK_NOT_SEEN_MEANS_UP to Surface Pro 3	2016-06-01 16:03:28 +02:00
hsi	…
hv	…
hwmon	hwmon: (lm90) use proper type for update_interval	2016-06-07 20:13:05 -07:00
hwspinlock	drivers/hwspinlock: use correct radix tree API	2016-05-20 17:58:30 -07:00
hwtracing	coresight: Handle build path error	2016-06-16 00:13:06 -07:00
i2c	i2c: mux: reg: Provide of_match_table	2016-06-09 22:38:16 +02:00
ide	…
idle	…
iio	Staging fixes for 4.7-rc4	2016-06-18 06:05:28 -10:00
infiniband	IB/IPoIB: Don't update neigh validity for unresolved entries	2016-06-07 10:49:48 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2016-05-27 19:14:35 -07:00
iommu	iommu/vt-d: Enable QI on all IOMMUs before setting root entry	2016-06-17 11:29:48 +02:00
ipack	…
irqchip	irqchip/irq-pic32-evic: Fix bug with external interrupts.	2016-06-02 18:03:50 +01:00
isdn	TTY and Serial driver update for 4.7-rc1	2016-05-20 20:57:27 -07:00
leds	leds: handle suspend/resume in heartbeat trigger	2016-06-08 11:47:06 +02:00
lguest	…
lightnvm	…
macintosh	…
mailbox	…
mcb	mcb: Acquire reference to carrier module in core	2016-06-13 18:49:30 -07:00
md	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2016-05-27 14:28:09 -07:00
media	Update my main e-mails at the Kernel tree	2016-06-15 15:35:37 -10:00
memory	memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing	2016-06-16 11:43:48 +03:00
memstick	drivers/memstick/core/mspro_block: use kmemdup	2016-05-23 17:04:14 -07:00
message	…
mfd	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
misc	mei: don't use wake_up_interruptible for wr_ctrl	2016-06-10 22:14:24 -07:00
mmc	mmc: sunxi: Re-enable eMMC HS-DDR modes on Allwinner A80	2016-06-02 10:40:20 +02:00
mtd	ubi: Don't bypass ->getattr()	2016-06-14 10:51:42 +02:00
net	vmxnet3: segCnt can be 1 for LRO packets	2016-06-10 00:15:11 -07:00
nfc	…
ntb	…
nubus	…
nvdimm	DAX error handling for 4.7	2016-05-26 19:34:26 -07:00
nvme	NVMe: Only release requested regions	2016-06-09 14:28:28 -06:00
nvmem	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
of	drivers/of: Fix depth for sub-tree blob in unflatten_dt_nodes()	2016-06-09 14:36:34 -05:00
oprofile	…
parisc	…
parport	…
pci	Char / Misc driver update for 4.7-rc1	2016-05-20 21:20:31 -07:00
pcmcia	…
perf	arm: pmu: Fix non-devicetree probing	2016-06-15 09:51:35 +01:00
phy	phy: for 4.7-rc	2016-06-10 23:06:21 -07:00
pinctrl	pinctrl: mediatek: fix dual-edge code defect	2016-05-31 10:13:45 +02:00
platform	platform/x86: Drop duplicate dependencies on X86	2016-06-08 13:21:37 -07:00
pnp	driver core update for 4.7-rc1	2016-05-20 21:26:15 -07:00
power	power supply and reset changes for the v4.7 series	2016-05-20 14:06:21 -07:00
powercap	…
pps	…
ps3	…
ptp	ptp: oops in ptp_ioctl()	2016-05-29 22:32:27 -07:00
pwm	pwm: atmel-hlcdc: Fix default PWM polarity	2016-06-14 10:51:45 +02:00
rapidio	…
ras	…
regulator	Merge remote-tracking branches 'regulator/fix/qcom-smd' and 'regulator/fix/tps51632' into regulator-linus	2016-06-13 16:51:57 +01:00
remoteproc	…
reset	…
rpmsg	…
rtc	rtc: tps6586x: rename so module can be autoloaded	2016-05-21 17:07:17 +02:00
s390	DAX error handling for 4.7	2016-05-26 19:34:26 -07:00
sbus	openprom: fix warning	2016-05-20 18:33:37 -07:00
scsi	Merge remote-tracking branch 'mkp-scsi/4.7/scsi-fixes' into fixes	2016-06-04 09:53:29 -04:00
sfi	…
sh	…
sn	…
soc	…
spi	sound updates #2 for 4.7-rc1	2016-05-28 12:23:12 -07:00
spmi	…
ssb	…
staging	Revert "Staging: rtl8188eu: rtw_efuse: Use sizeof type *pointer instead of sizeof type."	2016-06-17 11:21:45 -07:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2016-05-28 12:04:17 -07:00
tc	…
thermal	Merge branch 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux	2016-06-12 06:30:39 -07:00
thunderbolt	…
tty	devpts: Make each mount of devpts an independent filesystem.	2016-06-05 10:36:01 -07:00
uio	…
usb	usbip: rate limit get_frame_number message	2016-06-17 18:00:46 -07:00
uwb	…
vfio	vfio-pci: Allow to mmap sub-page MMIO BARs if the mmio page is exclusive	2016-07-08 10:06:04 -06:00
vhost	…
video	OMAPDSS: HDMI5: Change DDC timings	2016-05-31 08:20:43 +03:00
virt	…
virtio	virtio_balloon: fix PFN format for virtio-1	2016-05-22 19:44:13 +03:00
vlynq	…
vme	…
w1	…
watchdog	watchdog: ebc-c384_wdt: Allow build for X86_64	2016-06-17 20:21:12 -07:00
xen	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2016-05-28 12:04:17 -07:00
zorro	…
Kconfig	libnvdimm for 4.7	2016-05-23 11:18:01 -07:00
Makefile	/dev/dax, pmem: direct access to persistent memory	2016-05-20 22:02:53 -07:00