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This reverts commit 46f08792bb4a69ab8aab897c174d82b006026140.
This was not supposed to be applied to mainline.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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replace alloc/free with struct members.
todo: smash with initial implementation after
testing.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Support bridge filtering on top of the memory
API as suggested by Avi Kivity:
Create a memory region for the bridge's address space. This region is
not directly added to system_memory or its descendants. Devices under
the bridge see this region as its pci_address_space(). The region is
as large as the entire address space - it does not take into account
any windows.
For each of the three windows (pref, non-pref, vga), create an alias
with the appropriate start and size. Map the alias into the bridge's
parent's pci_address_space(), as subregions.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The switch to the new memory API caused the following problem:
The pci device may call pci_register_bar() to use PCI bus's address
space. But we don't init PCI bus's address space if it is not bus
0. A crash was reported:
http://lists.gnu.org/archive/html/qemu-devel/2011-08/msg02243.html
More work will be needed to make bridge filtering work correctly
with the memory API.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Obsoleted by f64e02b6cc.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Fix up some erroneous comments in code:
interrupt pins are named A-D, the
interrupt pin register is always readonly
and isn't zeroed out on reset.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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eepro100 was the last user. Now pci_add_capability is powerful enough.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The config string is variously delimited by =, @, and /, depending on the
field. Allow these characters to be escaped by preceeding them with \.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Now that iothread is always compiled sending a signal seems only an
additional step. This patch also avoid writing to two pipe (one from signal
and one in qemu_service_io).
Work with kvm enabled or disabled. strace output is more readable (less syscalls).
[ kwolf: Merged build fix by Paolo Bonzini ]
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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When assigning a 32-bit value to cmd->xfer (which is 64-bits)
it can be erroneously sign extended because the intermediate
32-bit computation is signed. Fix this by standardizing on
the ld*_be_p functions.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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librbd recently added async writeback and flush support. If the new
rbd_flush() call is available, call it.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Properly document the configuration string syntax and semantics. Remove
(out of date) details about the librbd implementation.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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If we are reading from the default config location, ignore any failures.
It is perfectly legal for the user to specify exactly the options they need
and to not rely on any config file.
Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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I've found that FreeBSD AHCI driver doesn't work with AHCI hardware
emulation of QEMU 0.15.0. I believe the problem is on QEMU's side. As I
see, it clears port's Interrupt Enable register each time when reset of
any level happens. Is is reasonable for the global controller reset. It
is probably not good, but acceptable for FreeBSD driver for the port
hard reset. But it is IMO wrong for the device soft reset. None of real
hardware I know behaves that way.
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Release extent_file on error in vmdk_parse_extents. Added closing files
in freeing extents.
Signed-off-by: Fam Zheng <famcool@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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It will not be needed for reads and writes if the HBA provides a sglist.
In addition, this lets scsi-disk refuse commands with an excessive
allocation length, as well as limit memory on usual well-behaved guests.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Also, consistently use qiov.size instead of iov.iov_len.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This fixes various problems with completion/cancellation:
* if the io_func fails to get an AIOCB, the callback wasn't called
* If DMA encounters a bounce buffer conflict, and the DMA operation is
canceled before the bottom half fires, bad things happen.
* memory is not unmapped after cancellation, again causing problems
when doing DMA to I/O areas
* cancellation could leak the iovec
* the callback was missed if the I/O operation failed without returning
an AIOCB
and probably more that I've missed. The patch fixes them by sharing
the cleanup code between completion and cancellation. The dma_bdrv_cb
now returns a boolean completed/not completed flag, and the wrapper
dma_continue takes care of tasks to do upon completion.
Most of these are basically impossible in practice, but it is better
to be tidy...
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Target-independent code cannot construct sglists, but it can take
them from the outside as a black box. Allow this.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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I found no rationale for this in the logs, and it is quite bad because
it will make scsi-generic unsafe WRT power failures.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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bdrv_flush is supposed to use 0/-errno return values
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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The nbd kernel module cannot enable DISCARD requests unless it is
informed about it. The flags field in the header is used for this,
and this patch adds support for it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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nbd supports writing flags in bytes 24...27 of the header,
and uses that for the read-only flag. Add support for it
in qemu-nbd.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This ensures we can cleanly signal the drop in case the connection timer
fires. So far we sent those frames to nowhere (target IP 0.0.0.0).
Found by the new assertion on invalid IPs in arp_table_search.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
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Today our printf format for the "info status" command is:
VM status: %s
Where the string can be "running", "running (single step mode)" or
"paused".
This commit extends it to:
VM status: %s (%s)
The second string corresponds to the "status" field as returned
by the query-status QMP command and it's only printed if "status"
is not "running" or "paused".
Example:
VM status: paused (shutdown)
PS: libvirt uses "info status" when using HMP, but the new format
should not break it.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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This new key reports the current VM status to clients. Please, check
the documentation being added in this commit for more details.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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We have two states where issuing cont before system_reset can
cause problems: RSTATE_SHUTDOWN (when -no-shutdown is used) and
RSTATE_PANICKED (which only happens with kvm).
This commit fixes that by doing the following when state is
RSTATE_SHUTDOWN or RSTATE_PANICKED:
1. returning an error to the user/client if cont is issued
2. automatically transition to RSTATE_PAUSED during system_reset
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Use runstate_is_running() instead, which is introduced by this commit.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Test against RSTATE_IN_MIGRATE instead.
Please, note that the RSTATE_IN_MIGRATE state is only set when all the
initial VM setup is done, while 'incoming_expected' was set right in
the beginning when parsing command-line options. Shouldn't be a problem
as far as I could check.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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This commit could have been folded with the previous one, however
doing it separately will allow for easy bisect and revert if needed.
Checking and testing all valid transitions wasn't trivial, chances
are this will need broader testing to become more stable.
This is a transition table as suggested by Lluís Vilanova.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Currently, only vm_start() and vm_stop() change the VM state.
That's, the state is only changed when starting or stopping the VM.
This commit adds the runstate_set() function, which makes it possible
to also do state transitions when the VM is stopped or running.
Additional states are also added and the current state is stored.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Today, when notifying a VM state change with vm_state_notify(),
we pass a VMSTOP macro as the 'reason' argument. This is not ideal
because the VMSTOP macros tell why qemu stopped and not exactly
what the current VM state is.
One example to demonstrate this problem is that vm_start() calls
vm_state_notify() with reason=0, which turns out to be VMSTOP_USER.
This commit fixes that by replacing the VMSTOP macros with a proper
state type called RunState.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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It's where all the state handling functions prototypes are located.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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QEMUFile * is only intended for migration nowadays. Using it for
anything else just adds pain and a layer of buffers for no good
reason.
Signed-off-by: Juan Quintela <quintela@redhat.com>
CC: malc <av1474@comtv.ru>
Signed-off-by: malc <av1474@comtv.ru>
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QEMUFile * is only intended for migration nowadays. Using it for
anything else just adds pain and a layer of buffers for no good
reason.
Signed-off-by: Juan Quintela <quintela@redhat.com>
CC: malc <av1474@comtv.ru>
Signed-off-by: malc <av1474@comtv.ru>
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Since we use memory API in sun4u.c, after
71579cae30b53c910cd6c47ab4e683f647d36519, setting up isa_mem_base
puts vga.chain4 outside of the physical address space.
Fix by removing obsolete isa_mem_base set up.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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The second register is only needed for 32 bit hosts.
Cc: Vassili Karpov <av1474@comtv.ru>
Fine-with-me'd-by: Vassili Karpov <av1474@comtv.ru>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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The second register is only needed for 32 bit hosts.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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The second register is only needed for 32 bit hosts.
Cc: Alexander Graf <agraf@suse.de>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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The second register is never used for ia64 hosts.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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The second register is only needed for 32 bit hosts.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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haddp[sd], hsubp[sd] and addsubp[sd] operate on floats, thus it is
necessary to use the appropriate floating point calculation functions.
If this is not done, those functions operate merely on integers, which
is not correct.
Signed-off-by: Max Reitz <max@tyndur.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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