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c26bc185b7
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Alexey Kardashevskiy c26bc185b7 vfio/spapr: Allow backing bigger guest IOMMU pages with smaller physical pages 
At the moment the PPC64/pseries guest only supports 4K/64K/16M IOMMU
pages and POWER8 CPU supports the exact same set of page size so
so far things worked fine.

However POWER9 supports different set of sizes - 4K/64K/2M/1G and
the last two - 2M and 1G - are not even allowed in the paravirt interface
(RTAS DDW) so we always end up using 64K IOMMU pages, although we could
back guest's 16MB IOMMU pages with 2MB pages on the host.

This stores the supported host IOMMU page sizes in VFIOContainer and uses
this later when creating a new DMA window. This uses the system page size
(64k normally, 2M/16M/1G if hugepages used) as the upper limit of
the IOMMU pagesize.

This changes the type of @pagesize to uint64_t as this is what
memory_region_iommu_get_min_page_size() returns and clz64() takes.

There should be no behavioral changes on platforms other than pseries.
The guest will keep using the IOMMU page size selected by the PHB pagesize
property as this only changes the underlying hardware TCE table
granularity.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-08-21 14:28:45 +10:00
..
9pfs 9p: darwin: Explicitly cast comparisons of mode_t with -1 2018-06-29 12:32:10 +02:00
acpi nvdimm: make persistence option symbolic 2018-06-11 22:19:57 +03:00
adc
alpha hw/alpha: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
arm hw/dma/pl080: Don't use CPU address space for DMA accesses 2018-08-20 11:24:33 +01:00
audio audio/hda: Fix migration 2018-07-24 17:02:02 +01:00
block block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
bt
char imx_serial: Generate interrupt on receive data ready if enabled 2018-08-20 11:24:31 +01:00
core sysbus: always allow explicit_ofw_unit_address() to override address generation 2018-08-16 22:27:43 -03:00
cpu hw/*/realview: Fix introspection problem with 'realview_mpcore' & 'realview_gic' 2018-07-17 13:12:49 +01:00
cris hw/cris: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
display virtio-gpu: fix crashes upon warm reboot with vga mode 2018-08-07 15:03:58 +01:00
dma hw/dma/pl080: Remove hw_error() if DMA is enabled 2018-08-20 11:24:33 +01:00
gpio hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init 2018-06-01 15:14:31 +02:00
hppa hw/hppa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
i2c ppc4xx_i2c: Rewrite to model hardware more closely 2018-07-03 09:56:52 +10:00
i386 pc: acpi: fix memory hotplug regression by reducing stub SRAT entry size 2018-08-03 11:35:21 +03:00
ide block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
input hw/input/tsc2005: Convert a fprintf() call to trace events 2018-06-29 15:04:18 +01:00
intc nvic: Expose NMI line 2018-08-20 11:24:33 +01:00
ipack hw/ipack: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
ipmi object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence 2018-06-12 12:07:30 +02:00
isa hw/isa/smc37c669: Change the parallel I/O base to 378H 2018-06-16 19:46:54 -10:00
lm32 hw/lm32: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
m68k hw/m68k: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
mem pc-dimm: get_memory_region() will not fail after realize 2018-06-28 19:05:34 +02:00
microblaze hw/microblaze/xlnx-zynqmp-pmu: Fix introspection problem in 'xlnx, zynqmp-pmu-soc' 2018-07-23 15:21:25 +01:00
mips * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
misc hw/misc: Remove mmio_interface device 2018-08-20 11:24:32 +01:00
moxie Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
net e1000e: Prevent MSI/MSI-X storms 2018-07-20 08:30:48 +08:00
nios2 hw/nios2: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
nvram fw_cfg: ignore suffixes in the bootdevice list dependent on machine class 2018-08-16 22:27:43 -03:00
openrisc Change references to serial_hds[] to serial_hd() 2018-04-26 13:57:00 +01:00
pci
pci-bridge
pci-host hw/ppc: Use the IEC binary prefix definitions 2018-07-02 15:41:16 +02:00
pcmcia
ppc spapr_cpu_core: vmstate_[un]register per-CPU data from (un)realizefn 2018-08-21 11:09:34 +10:00
rdma config: split PVRDMA from RDMA 2018-08-18 18:01:34 +03:00
riscv spike: Fix crash when introspecting the device 2018-07-19 09:05:48 -07:00
s390x s390x: remove 's390-squash-mcss' option 2018-08-20 14:18:49 +02:00
scsi block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
sd sdhci: add i.MX SD Stable Clock bit 2018-08-20 11:24:32 +01:00
sh4 hw/sh4: Use the IEC binary prefix definitions 2018-07-02 15:41:15 +02:00
smbios hw/smbios: Use the IEC binary prefix definitions 2018-07-02 15:41:12 +02:00
sparc * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
sparc64 * IEC units series (Philippe) 2018-07-02 19:07:19 +01:00
ssi hw/ssi/xilinx_spips: Remove unneeded MMIO request_ptr code 2018-08-20 11:24:32 +01:00
timer hw/timer/m48t59: Move away from old_mmio accessors 2018-08-20 11:24:33 +01:00
tpm tpm: extend TPM TIS with state migration support 2018-05-24 12:07:04 -04:00
tricore hw/tricore: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
unicore32
usb block: Remove deprecated -drive option serial 2018-08-15 12:50:39 +02:00
vfio vfio/spapr: Allow backing bigger guest IOMMU pages with smaller physical pages 2018-08-21 14:28:45 +10:00
virtio kvm: Use inhibit to prevent ballooning without synchronous mmu 2018-08-17 09:27:15 -06:00
watchdog hw/watchdog/cmsdk_apb_watchdog: Implement CMSDK APB watchdog module 2018-08-20 11:24:33 +01:00
xen xen: Don't use memory_region_init_ram_nomigrate() in pci_assign_dev_load_option_rom() 2018-06-22 13:28:42 +01:00
xenpv hw/xen: Use the IEC binary prefix definitions 2018-07-02 15:41:13 +02:00
xtensa hw/xtensa: Use the IEC binary prefix definitions 2018-07-02 15:41:14 +02:00
Makefile.objs hw: allow compiling out SCSI 2018-06-01 15:14:31 +02:00