goto into scope is evil. rearrange pci_bridge_filter
so that we always go to end of function on error.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
- fix bridge prefetchable memory accesser to check 64bit or not.
- use pcibus_t consistently instead mixing pcibus_t and uint64_t.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch replaces magic number, 256, with ARRAY_SIZE().
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Split bar address math into a separate function.
In particular, this gets rid of an ugly forward goto
into scope that we have there.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
This patch removes unused constants committed by
fb23162885.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch moves two typedefs, PCIHostState and PCIExpressHost to
qemu-common.h for consistency as PCIBus and PCIDevice are typedefed
in qemu-common.h.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch removes some comment which should go into commit log
in pci.h.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch replaces for loop by memset in pci_init_wmask().
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
including pci_host.h isn't needed by pci.c.
This patch kills it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch removes unnecessary & 0xff in pci_dev_find_by_addr().
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch renames pci_find_host_bus() to pci_find_root_bus()
as suggested by "Michael S. Tsirkin" <mst@redhat.com>.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Because pci_sub_bus() is used only once so eliminate it
by open coding as suggested by "Michael S. Tsirkin" <mst@redhat.com>.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci_host_data_register_io_memory and its variants are too long a bit.
So shorten them. Now they are
pci_host_{conf, data}_register_{mmio, mmio_noswap, ioport}()
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch renames pci_addr_to_dev(), pcie_mmcfg_addr_to_dev()
to pci_dev_find_by_addr(), pcie_dev_find_by_mmcfg_addr()
as "Michael S. Tsirkin" <mst@redhat.com> suggested.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch removes pci_addr_to_config() and open code it
as suggested by Michael S. Tsirkin <mst@redhat.com>.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Remove switch on length: we don't care about
high bits for value, so just return all ones
if no device. And add one assert().
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
Now pci host stuff has been moved from pci.[hc] to pci_host.[hc]
so the declaration of pci_data_{read, write}() should be in
pci_host.h
This patch moves them from pci.h to pci_host.h for consistency.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
It printed wrong limit value of bridge.
This patch fixes it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci.h declares some functions which aren't
defined in pci.h. Clean up moving things
to appropriate headers, and update all users.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This causes ctrl+alt+u or ctrl+alt+f to not work when windows hasn't been
resized first. Other graphic emulators do resize the screen on
hw_invalidate.
This reverts commit 0bd8246bfe.
Reqrite bitbanging I2C implementation. New code improves stop/start
condition handling, and gives more accurate input line level.
Introduce intermediate abstraction layer for I2C bitbanging that
is not connected via a GPIO port.
Signed-off-by: Paul Brook <paul@codesourcery.com>
We already have a working multiboot implementation that uses fw_cfg to get
its kernel module etc. data in int19 runtime now.
So what's missing is a working linux boot option rom. While at it I figured it
would be a good idea to take the opcode generator out of pc.c and instead use
a proper option rom, like we do with multiboot.
So here it is - an fw_cfg using option rom for -kernel with linux!
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Right now we load the guest kernel to RAM, fire off the BIOS, hope it
doesn't clobber memory and run an option rom that jumps into the kernel.
That breaks with SeaBIOS, as that clears memory. So let's read all
kernel, module etc. data using the fw_cfg interface when in the int19
handler.
This patch implements said mechanism for multiboot.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We have several rom helpers currently, but none of them can get us
code that spans several roms into a pointer.
This patch introduces a function that copies over rom contents.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch introduces block migration called during live migration. Block
are being copied to the destination in an async way. First the code will
transfer the whole disk and then transfer all dirty blocks accumulted during
the migration.
Still need to improve transition from the iterative phase of migration to the
end phase. For now transition will take place when all blocks transfered once,
all the dirty blocks will be transfered during the end phase (guest is
suspended).
Changes from v4:
- Global variabels moved to a global state structure allocated dynamically.
- Minor coding style issues.
- Poll block.c for tracking of dirty blocks instead of manage it here.
Signed-off-by: Liran Schour <lirans@il.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This function sends out the OPENED event to backends that
have drive the chardevs. The 'reset' is now a historical
artifact and we can now just call the function for what it
is.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Before 2e29bd0478, Uni-North host and AGP
bridge were using the same devfn, 11 << 3. The net effect was that only
AGP bridge was visible. This was changed in the commit to 13 << 3 for AGP.
Some of the later crashes happened due to NULL pointer dereferences generated
by 07b7d05377 and insufficient return value
checks.
Disable host device and revert AGP to 11 << 3.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Only two callers of pci_create_simple/pci_register_device bothered
to check the return value. Other cases were prone to crashing with
spurious NULL pointer dereferences.
Make QEMU exit with an error message when devfn is attempted to
be duplicated, also applies to case when the bus is full. Remove
checks.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Change 260c0cd3d9
(pci: use range helper functions) introduced a
bug which made pci cirrus vga on mips malta
(and maybe other pci devices) fail.
Don't change addr - its original value is needed
by ranges_overlap() and range_covers().
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Acked-by: Ryan Harper <ryanh@us.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Don't load the kernel twice during reset.
See f2d7497876.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Because of a typo, structure field vga_bios_size was not initialized
properly and a bogus BAR6 for the nonexistent VGA BIOS appeared.
The bug was uncovered by c169998802.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Allow the user to specify the number of cores present on the
RealView EB + ARM11MPCore board. Also split into its own config
rather than guessing from the CPU name.
Signed-off-by: Paul Brook <paul@codesourcery.com>
When code was transformed to use qdev_reset/vmstate registration, vmstate
was passed a variable of the wrong type
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
While writing working on an e1000 driver for my university's OS I
noticed that some registers aren't readable in QEMU, but they should
be readable as stated in Intels Driver Developer Manual (and also
verified on real hardware).
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We need to signal not only write errors, but also read errors to the guest
driver. This fixes a regression introduced by 869a5c6d.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
A bus may have hotplugging enabled but not have the 'unplug'
callback defined, which would lead to a crash on trying to
unplug a device on the bus.
Fix by introducing an assert to check if the callback is valid.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Some devices did not have an initialisation value
for entry ".exit". This is fixed here.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Rename pxe-eepro100.bin to pxe-i82559er.bin.
The other devices supported by eepro100.c need
additional pxe boot ROM images.
* Call rom_add_option during initialisation.
The code won't work with two or more different
eepro100 devices, because it only adds one option
ROM, but this use case is perhaps never needed.
Using this patch, model=i82559er at least works partially.
For full support, more eepro100 patches are needed
(will follow later, can be fetched from ar7 branch
of QEMU).
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Many (most?) serial interfaces have a programmable
clock which provides the reference frequency ("baudbase").
So a fixed baudbase which is only set once can be wrong.
omap1.c is an example which could use the new interface
to change baudbase when the programmable clock changes.
ar7 system emulation (still not part of standard QEMU)
is similar to omap and already uses serial_set_frequency.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Make MPCore secondary cpu initialization work with the new reset
handling. Also change the inital FLAG value from 3 to zero to match
recent kenrels.
Signed-off-by: Paul Brook <paul@codesourcery.com>
rom_+add_file/rom_add_blob only work correctly if called before
load_all_roms. Enforce this rather than silently accepting and putting
the rom in the wrong place at reset.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Since 45a50b1 load_image_targphys should only be called once.
ARM boards incorrectly call it every time the system is reset.
Signed-off-by: Paul Brook <paul@codesourcery.com>
* Add device properties (size of statistical data,
extended tcb support) to EEPRO100State and set
these values for the different devices.
* Fix PCI configuration for existing devices.
* Add initialisation code for missing devices.
* Remove function device_supports_eTxCB.
It is no longer needed.
* Fix dump of statistical data. It now respects
the real size of the statistical data.
An endianess issue was fixed here, too.
* CU_SHOWSTATS, CU_DUMPSTATS now write a
completion value after the statistical data.
There is no need to keep this value in
eepro100_stats_t, so member "complete"
could be removed.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make pci_info_device() print out bridge's filtering value like
io base/limit, subbus and subordinate bus.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch implements pci bridge filtering.
TODO: currently almost all the map funcions assumes
filtered_size == size and addr & ~(size - 1) == addr.
However with bridge filtering, they aren't always true.
Teach them such cases, such that filtered_size < size and
addr & (size - 1) != 0.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
split out device iteration logic from pci_for_each_device().
factored out function, pci_for_each_device_under_bus() will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Remove one indentation of pci_update_mappings.
Just for cosmetics, no logic change.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- Only sets default subsystem id for header type 00.(normal header type)
because header type 01 doesn't have subsystem id, and uses the register
for other purpose. So setting default subsystem id doesn't make sense.
- initialize wmask more for header type 01.(bridge header type)
Without those wmasks, linux was confused not boot,
and lspci was confused not to print out expected IO/memory range.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When updated ROM expantion address of header type 0, it missed
to update mappings.
Add PCI_ROM_ADDRESS check whether to call pci_update_mappings()
Also update pci mapping when PCI_ROM_ADDRESS1 is written for header type 1.
pci_update_mapping() path isn't performance critical,
so call it even independent of header type.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
clean up pci_default_write_config() by the range helper functions.
Suggested by Michael S. Tsirkin <mst@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add helper function to check ranges overlap suggested by
Michael S. Tsirkin <mst@redhat.com>.
His original suggestion was to use [first, last], however I chosen
to use offset, length pair, i.e. [offset, offset + length)
because pci configuration space related functions all uses offset and length
pair, so it helps to avoid to type constant twice.
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch adds common routines for pcie host bridge and pcie mmcfg.
This will be used by q35 based chipset emulation.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
VMSTATE_BUFFER_UNSAFE_INFO for as a buffer with specified VMStateInfo.
It will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
change the first argument, void *opaque to PCIBus *s
of the pci_data_{read, write}.
They aren't used as direct callback so the argument type
don't have to be void*. So change it to the right type.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Move pci host stuff from pci.c to pci_host.c.
And add some comments.
Later pcie host bridge functions will be defined in pcie_host.c
not to bloat pci.c.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
factor out the logic which converts io port address into pci device
and offset in PCI configuration space.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch sorts out/enhances pci code to track pci bus topology
more accurately.
- Track host bus bridge with pci domain number. Although the
current qemu implementation supports only pci domian 0 yet.
- Track pci bridge parent-child relationship.
When looking down from pci host bus for pci sub bus, be aware of
secondary bus/subordinate bus.
Thus pci configuration transaction is more accurately emulated.
This patch adds new member to PCIBus to track pci bus topology.
Since qdev already tracks down bus relationship, those new member
wouldn't be necessary.
However it would be addressed later because not all the pci device
isn't converted to qdev yet.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Since It can be retrieved from pci configuration space,
the member is unnecessary.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
implemented pci 64bit bar support.
The tricky bit is pci_update_mapping().
An OS is allowed to set the BAR such that OS can't address the area
pointed by BAR. It doesn't make sense, though.
In that case, don't map the BAR.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64bit bar.
For 64bit bar support, change pcibus_t which represents
pci bus addr/size from uint32_t to uint64_t.
And also change FMT_pcibus for printf.
In pci_update_mapping() checks 32bit overflow.
So the check must be updated too.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64bit BAR.
Later pcibus_t will be changed from uint32_t to uint64_t.
Introduce FMT_PCIBUS for printf format for pcibus_t.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is preliminary for 64 bit BAR support.
Introduce dedicated type, pcibus_t, to represent pci bus address/size
instead of uint32_t.
Later this type will be changed to uint64_t.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
split static functions in pci_host.h into pci_host.c and
pci_host_template.h.
Later a structures declared in pci_host.h, PCIHostState, will be used.
However pci_host.h doesn't allow to include itself easily. This patches
addresses it.
pci_host.h includes functions which are instantiated in .c by including
pci_host.h with typedefing pci_addr_t.
pci_addr_t is per pci host bridge and is typedef'ed to uint32_t for ioio
or target_phys_addr_t for mmio in .c file.
That prevents from including pci_host.h to use PCIHostState because of
requiring type, pci_addr_t.
Its purpose to include is to instantiate io function for mmio or ioio
depending on which pci host bridge requires ioio or mmio.
To avoid including code, we always instantiate both version.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make pci_bar() aware of header type 1. When PCI_ROM_SLOT
it should return PCI_ROM_ADDRESS1 (!= PCI_ROM_ADDRESS)
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch cleans up pci_default_read_config() removing
ugly length and range check.
Suggested by "Michael S. Tsirkin" <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
make constants for pci base address match pci_regs.h by
renaming PCI_ADDRESS_SPACE_xxx to PCI_BASE_ADDRESS_SPACE_xxx.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use pci_set_word() for pci command register.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- use symbolic constant
- use helper function pci_set_xxx()
- removed lines which initializes to 0.
It is unnecessary because it is already zeroed.
- add some comments on command registers.
Some initial values are suspicious because they seems to
be specific to apb_pci.c which is the only user of pci bridge right now.
For now don't touch those values to avoid breakage.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use pci_[gs]et_{byte, word, long}() to access pci configuration
space.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add helper functions to get/set PCIDevice::config
Those will be used later.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
define a constant to represent a unmapped bar instead of -1 and use it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
use PCI_SLOT() and PCI_FUNC() where appropriate instead of
direct use of bit operation.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
introduce constant PCI_NUM_PINS for the number of interrupt pins, 4.
and use it.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
add missing ## in PCI_DPRINTF() to compile.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patch is a followup to 8eca6b1bc7,
fixing crashes when guests with 2.6.25 virtio drivers have saturated
virtio network connections.
https://bugs.edge.launchpad.net/ubuntu/+source/qemu-kvm/+bug/458521
That patch should have been whitelisting *_HOST_* rather than the the
*_GUEST_* features.
I tested this by running an Ubuntu 8.04 Hardy guest (2.6.24 kernel +
2.6.25-virtio driver). I saturated both the incoming, and outgoing
network connection with nc, seeing sustained 6MB/s up and 6MB/s down
bitrates for ~20 minutes. Previously, this crashed immediately. Now,
the guest does not crash and maintains network connectivity throughout
the test.
Signed-off-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We should only return zero from receive() for a condition which we'll
get notification of when it changes. Currently, we're returning zero
if the guest driver is not ready, but we won't ever flush our queue
when that status changes.
Also, don't check buffer space in can_receive(), but instead just allow
receive() to return zero when this condition occurs and have the caller
handle queueing the packet.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
We have code for a quite a few block formats. While I trust that all
of these formats are useful at least for some people in some
circumstances, some of them are of a kind that friends don't let
friends use in production.
This patch provides an optional block format whitelist, default off.
If a whitelist is configured with --block-drv-whitelist, QEMU proper
can use only whitelisted formats. Other programs, like qemu-img, are
not affected.
Drivers for formats off the whitelist still participate in format
probing, to ensure all programs probe exactly the same. Without that,
QEMU proper would be prone to treat images with a format off the
whitelist as raw when the image's format is probed.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
These devices are created automatically, and attempting to create
another one with -device fails with "qemu: hardware error:
register_ioport_write: invalid opaque".
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Problem: x86 systems could not survive a few system_resets.
Clear most of IDE state when reset. Implement the missing reset handlers.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Michael S. Tsirkin