sdk/emulator/qemu.git
11 years agooption: Add assigned flag to QEMUOptionParameter
Max Reitz [Thu, 29 Aug 2013 09:15:44 +0000 (11:15 +0200)]
option: Add assigned flag to QEMUOptionParameter

Adds an "assigned" flag to QEMUOptionParameter which is cleared at the
beginning of parse_option_parameters and set on (successful)
set_option_parameter and set_option_parameter_int.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agogluster: Abort on AIO completion failure
Bharata B Rao [Tue, 27 Aug 2013 08:15:41 +0000 (13:45 +0530)]
gluster: Abort on AIO completion failure

Currently if gluster AIO callback thread fails to notify the QEMU thread about
AIO completion, we try graceful recovery by marking the disk drive as
inaccessible. This error recovery code is race-prone as found by Asias and
Stefan. However as found out by Paolo, this kind of error is impossible and
hence simplify the code that handles this error recovery.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoblock: Remove old raw driver
Kevin Wolf [Wed, 28 Aug 2013 13:15:52 +0000 (15:15 +0200)]
block: Remove old raw driver

This is unused code now.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoswitch raw block driver from "raw.o" to "raw_bsd.o"
Laszlo Ersek [Wed, 21 Aug 2013 10:41:23 +0000 (12:41 +0200)]
switch raw block driver from "raw.o" to "raw_bsd.o"

"Incoming" function prototypes and "outgoing" function calls must match
reality. Implemented using the "struct BlockDriver" definition in
"include/block/block_int.h", and gcc errors & warnings.

v1->v2:

On 08/20/13 09:51, Kevin Wolf wrote:
> Am 18.08.2013 um 16:29 hat Paolo Bonzini geschrieben:
>> Il 16/08/2013 16:15, Laszlo Ersek ha scritto:
>>> +static int raw_reopen_prepare(BDRVReopenState *reopen_state,
>>> +                              BlockReopenQueue *queue, Error **errp)
>>>  {
>>> -    return bdrv_reopen_prepare(bs->file);
>>> +    BDRVReopenState tmp = *reopen_state;
>>> +
>>> +    tmp.bs = tmp.bs->file;
>>> +    return bdrv_reopen_prepare(&tmp, queue, errp);
>>>  }
>>
>> This should just return zero, my fault.
>
> Which is because bdrv_reopen_queue() already queues bs->file for reopen.
> The simple return 0; implementation is shared by all other format drivers
> that support reopening images.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoraw_bsd: register bdrv_raw
Laszlo Ersek [Wed, 21 Aug 2013 10:41:22 +0000 (12:41 +0200)]
raw_bsd: register bdrv_raw

On 08/05/13 15:03, Paolo Bonzini wrote:
>
> [...]
>
> 5) Formats are registered with bdrv_register (takes a BlockDriver*). You
> also need to pass the caller of bdrv_register to block_init.

Fill in the BlockDriver structure with the raw_*() functions that have
been added to "block/raw_bsd.c", in the order the fields are defined in
"include/block/block_int.h".

I needed more explanation / naming examples for registering the driver
than what Paolo gave me, so I copied / adapted from "block/qcow2.c". The
parts I took as basis for modification are blamed on

    commit 5efa9d5a8b18841c9c62208a494d7f519238979a
    Author: Anthony Liguori <aliguori@us.ibm.com>
    Date:   Sat May 9 17:03:42 2009 -0500

        Convert block infrastructure to use new module init functionality

    commit 20d97356c9df6d68fbd37d6334fdb7063f24eab6
    Author: Blue Swirl <blauwirbel@gmail.com>
    Date:   Fri Apr 23 20:19:47 2010 +0000

        Fix OpenBSD build

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoraw_bsd: add raw_create_options
Laszlo Ersek [Wed, 21 Aug 2013 10:41:21 +0000 (12:41 +0200)]
raw_bsd: add raw_create_options

On 08/05/13 15:03, Paolo Bonzini wrote:
>
> [...]
>
> 4) There is another member, .create_options, which is an array of
> QEMUOptionParameter structs, terminated by an all-zero item.  The only
> option you need is for the virtual disk size.  You will find something
> to copy from in other block drivers, for example block/qcow2.c.

Code taken and adapted from "block/qcow2.c", as suggested. The code being
copied/modified is blamed on

    commit 20d97356c9df6d68fbd37d6334fdb7063f24eab6
    Author: Blue Swirl <blauwirbel@gmail.com>
    Date:   Fri Apr 23 20:19:47 2010 +0000

        Fix OpenBSD build

and

    commit 7c80ab3f21f0b1342f23057d4345ae266c7348d9
    Author: Jes Sorensen <Jes.Sorensen@redhat.com>
    Date:   Fri Dec 17 16:02:39 2010 +0100

        block/qcow2.c: rename qcow_ functions to qcow2_

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoraw_bsd: introduce "special members"
Laszlo Ersek [Wed, 21 Aug 2013 10:41:20 +0000 (12:41 +0200)]
raw_bsd: introduce "special members"

On 08/05/13 15:03, Paolo Bonzini wrote:
>
> [...]
>
> 3) These members are special
>
>     .format_name   is the string "raw"
>     .bdrv_open     raw_open should set bs->sg to bs->file->sg and return 0
>     .bdrv_close    raw_close should do nothing
>     .bdrv_probe    raw_probe should just return 1.

v1->v2:

On 08/20/13 10:11, Kevin Wolf wrote:
> Am 16.08.2013 um 16:15 hat Laszlo Ersek geschrieben:

>> +static int raw_probe(void)
>> +{
>> +    return 1;
>> +}
>
> Maybe add a comment here like "smallest possible positive score so that
> raw is used if and only if no other block driver works".

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoraw_bsd: add raw_create()
Laszlo Ersek [Wed, 21 Aug 2013 10:41:19 +0000 (12:41 +0200)]
raw_bsd: add raw_create()

On 08/05/13 15:03, Paolo Bonzini wrote:
>
> [...]
>
> 2) This is also a simple forwarder function:
>
>     .bdrv_create
>
> but there is no BlockDriverState argument so the forwarded-to function
> does not have a bs->file argument either.  The forwarded-to function is
> bdrv_create_file.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoraw_bsd: emit debug events in bdrv_co_readv() and bdrv_co_writev()
Laszlo Ersek [Wed, 21 Aug 2013 10:41:18 +0000 (12:41 +0200)]
raw_bsd: emit debug events in bdrv_co_readv() and bdrv_co_writev()

On 08/05/13 15:03, Paolo Bonzini wrote:
>
> [...]
>
> 1) BlockDriver is a struct in which these function members are
> interesting:
>
>     .bdrv_reopen_prepare
>     .bdrv_co_readv
>     .bdrv_co_writev
>     .bdrv_co_is_allocated
>     .bdrv_co_write_zeroes
>     .bdrv_co_discard
>     .bdrv_getlength
>     .bdrv_get_info
>     .bdrv_truncate
>     .bdrv_is_inserted
>     .bdrv_media_changed
>     .bdrv_eject
>     .bdrv_lock_medium
>     .bdrv_ioctl
>     .bdrv_aio_ioctl
>     .bdrv_has_zero_init
>
> They should be implemented as simple forwarders (see above). There are
> 16 functions listed here, you can easily see how this already accounts
> for 100+ SLOC roughly...
>
> The implementations of bdrv_co_readv and bdrv_co_writev should also call
> BLKDBG_EVENT on bs->file too, before forwarding to bs->file.  The events
> to be generated are BLKDBG_READ_AIO and BLKDBG_WRITE_AIO.

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoadd skeleton for BSD licensed "raw" BlockDriver
Laszlo Ersek [Wed, 21 Aug 2013 10:41:17 +0000 (12:41 +0200)]
add skeleton for BSD licensed "raw" BlockDriver

On 08/05/13 15:03, Paolo Bonzini wrote:
>
>
> ----- Original Message -----
>> From: "Laszlo Ersek" <lersek@redhat.com>
>> To: "Paolo Bonzini" <pbonzini@redhat.com>
>> Sent: Monday, August 5, 2013 2:43:46 PM
>> Subject: Re: [PATCH 1/2] raw: add license header
>>
>> On 08/02/13 00:27, Paolo Bonzini wrote:
>>> On 08/01/2013 10:13 AM, Christoph Hellwig wrote:
>>>> On Wed, Jul 31, 2013 at 08:19:51AM +0200, Paolo Bonzini wrote:
>>>>> Most of the block layer is under the BSD license, thus it is
>>>>> reasonable to license block/raw.c the same way.  CCed people should
>>>>> ACK by replying with a Signed-off-by line.
>>>>
>>>> The coded was intended to be GPLv2.
>>>
>>> Laszlo, would you be willing to do clean-room reverse engineering?
>>>
>>> (No rants, please. :))
>>
>> What's the scope exactly?
>
> It's quite small, it's a file full of forwarders like
>
> static void raw_foo(BlockDriverState *bs)
> {
>     return bdrv_foo(bs->file);
> }
>
> It's 170 lines of code, all as boring as this.  I only picked you
> because I'm quite certain you have never seen the file (and the answer
> confirmed it).
>
> Basically:
>
> 1) BlockDriver is a struct in which these function members are
> interesting:
>
>     .bdrv_reopen_prepare
>     .bdrv_co_readv
>     .bdrv_co_writev
>     .bdrv_co_is_allocated
>     .bdrv_co_write_zeroes
>     .bdrv_co_discard
>     .bdrv_getlength
>     .bdrv_get_info
>     .bdrv_truncate
>     .bdrv_is_inserted
>     .bdrv_media_changed
>     .bdrv_eject
>     .bdrv_lock_medium
>     .bdrv_ioctl
>     .bdrv_aio_ioctl
>     .bdrv_has_zero_init
>
> They should be implemented as simple forwarders (see above).
> There are 16 functions listed here, you can easily see how this
> already accounts for 100+ SLOC roughly...
>
> The implementations of bdrv_co_readv and bdrv_co_writev should also
> call BLKDBG_EVENT on bs->file too, before forwarding to bs->file.  The
> events to be generated are BLKDBG_READ_AIO and BLKDBG_WRITE_AIO.
>
> 2) This is also a simple forwarder function:
>
>     .bdrv_create
>
> but there is no BlockDriverState argument so the forwarded-to function
> does not have a bs->file argument either.  The forwarded-to function
> is bdrv_create_file.
>
> 3) These members are special
>
>     .format_name   is the string "raw"
>     .bdrv_open     raw_open should set bs->sg to bs->file->sg and return 0
>     .bdrv_close    raw_close should do nothing
>     .bdrv_probe    raw_probe should just return 1.
>
> 4) There is another member, .create_options, which is an array of
> QEMUOptionParameter structs, terminated by an all-zero item.  The only
> option you need is for the virtual disk size.  You will find something
> to copy from in other block drivers, for example block/qcow2.c.
>
> 5) Formats are registered with bdrv_register (takes a BlockDriver*).
> You also need to pass the caller of bdrv_register to block_init.
>
> 6) I'm not sure how to organize the patch series, so I'll leave this to
> your creativity.  I guess in this case move/copy detection of git should
> be disabled.  I would definitely include this spec in the commit
> message as a proof of clean-room reverse engineering.
>
> 7) Remember a BSD header like the one in block.c.
>
> Paolo

This patch implements the email up to the paragraph ending with "100+ SLOC
roughly". The skeleton is generated from the list there, with a simple
shell loop using "sed" and the raw_foo() template.

The BSD license block is copied (and reflowed) from
"util/qemu-progress.c".

Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoblock/qcow2.h: Avoid "1LL << 63" (shifts into sign bit)
Peter Maydell [Fri, 23 Aug 2013 16:35:45 +0000 (17:35 +0100)]
block/qcow2.h: Avoid "1LL << 63" (shifts into sign bit)

The expression "1LL << 63" tries to shift the 1 into the sign bit of a
'long long', which provokes a clang sanitizer warning:

runtime error: left shift of 1 by 63 places cannot be represented in type 'long long'

Use "1ULL << 63" as the definition of QCOW_OFLAG_COPIED instead
to avoid this. For consistency, we also update the other QCOW_OFLAG
definitions to use the ULL suffix rather than LL, though only the
shift by 63 is undefined behaviour.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoqemu-iotests: Update reference output for 051
Kevin Wolf [Wed, 28 Aug 2013 14:12:20 +0000 (16:12 +0200)]
qemu-iotests: Update reference output for 051

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoRevert "block: Disable driver-specific options for 1.6"
Kevin Wolf [Wed, 28 Aug 2013 07:50:40 +0000 (09:50 +0200)]
Revert "block: Disable driver-specific options for 1.6"

This reverts commit 8afaefb8919dc8746a57c450a758717c516c7b0a.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoqapi-types.py: Split off generate_struct_fields()
Kevin Wolf [Tue, 2 Jul 2013 10:18:18 +0000 (12:18 +0200)]
qapi-types.py: Split off generate_struct_fields()

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
11 years agoblock: Remove redundant assertion
Kevin Wolf [Mon, 15 Apr 2013 08:59:42 +0000 (10:59 +0200)]
block: Remove redundant assertion

The failing condition is checked immediately before the assertion, so
keeping the assertion is kind of redundant.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
11 years agoqcow2: Change default for new images to compat=1.1
Kevin Wolf [Mon, 19 Aug 2013 08:38:01 +0000 (10:38 +0200)]
qcow2: Change default for new images to compat=1.1

By the time that qemu 1.7 will be released, enough time will have passed
since qemu 1.1, which is the first version to understand version 3
images, that changing the default shouldn't hurt many people any more
and the benefits of using the new format outweigh the pain.

qemu-iotests already runs with compat=1.1 by default.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
11 years agoMerge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5
Anthony Liguori [Thu, 29 Aug 2013 22:21:51 +0000 (17:21 -0500)]
Merge remote-tracking branch 'qemu-kvm/uq/master' into stable-1.5

* qemu-kvm/uq/master:
  kvm-stub: fix compilation
  kvm: shorten the parameter list for get_real_device()
  kvm: i386: fix LAPIC TSC deadline timer save/restore
  kvm-all.c: max_cpus should not exceed KVM vcpu limit
  kvm: Simplify kvm_handle_io
  kvm: x86: fix setting IA32_FEATURE_CONTROL with nested VMX disabled
  kvm: add KVM_IRQFD_FLAG_RESAMPLE support
  kvm: migrate vPMU state
  target-i386: remove tabs from target-i386/cpu.h
  Initialize IA32_FEATURE_CONTROL MSR in reset and migration

Conflicts:
target-i386/cpu.h
target-i386/kvm.c

aliguori: fixup trivial conflicts due to whitespace and added cpu
          argument

Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
11 years agoMerge remote-tracking branch 'sweil/mingw' into stable-1.5
Anthony Liguori [Thu, 29 Aug 2013 22:20:17 +0000 (17:20 -0500)]
Merge remote-tracking branch 'sweil/mingw' into stable-1.5

# By Stefan Weil
# Via Stefan Weil
* sweil/mingw:
  gtk: Remove unused include statements which are not portable
  w32: Add an icon resource
  w32: Fix broken out-of-tree builds (missing version.o)

Message-id: 1377607132-21336-1-git-send-email-sw@weilnetz.de
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
11 years agoMerge remote-tracking branch 'mst/tags/for_anthony' into stable-1.5
Anthony Liguori [Thu, 29 Aug 2013 22:19:19 +0000 (17:19 -0500)]
Merge remote-tracking branch 'mst/tags/for_anthony' into stable-1.5

pc,pci,virtio fixes and cleanups

This includes pc and pci cleanups, future-proofing of ROM files,
and a virtio bugfix correcting splice on virtio console.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Mon 26 Aug 2013 01:34:20 AM CDT using RSA key ID D28D5469
# gpg: Can't check signature: public key not found

# By Markus Armbruster (5) and others
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
  virtio: virtqueue_get_avail_bytes: fix desc_pa when loop over the indirect descriptor table
  pc_piix: Kill pc_init1() memory region args
  pc: pc_compat_1_4() now can call pc_compat_1_5()
  pc: Create pc_compat_*() functions
  pc: Kill pc_init_pci_1_0()
  pc: Don't explode QEMUMachineInitArgs into local variables needlessly
  pc: Don't prematurely explode QEMUMachineInitArgs
  ppc: Don't duplicate QEMUMachineInitArgs in PPCE500Params
  ppc: Don't explode QEMUMachineInitArgs into local variables needlessly
  sun4: Don't prematurely explode QEMUMachineInitArgs
  q35: Add PCIe switch to example q35 configuration
  loader: store FW CFG ROM files in RAM
  arch_init: align MR size to target page size
  pc: cleanup 1.4 compat support

Message-id: 1377535318-30491-1-git-send-email-mst@redhat.com

11 years agotcg-i386: Remove abort from GETPC_LDST
Richard Henderson [Thu, 29 Aug 2013 15:21:37 +0000 (08:21 -0700)]
tcg-i386: Remove abort from GETPC_LDST

Indeed, remove it entirely and remove the is_tcg_gen_code check
from GETPC_EXT.

Fixes https://bugs.launchpad.net/qemu/+bug/1218098 wherein a call
to a "normal" helper function performed a sequence of tail calls
all the way into the memory helper functions, leading to a stack
frame in which the memory helper function appeared to be called
directly from tcg.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotarget-mips: fix get_physical_address() #if 0 build error
James Hogan [Tue, 27 Aug 2013 16:48:36 +0000 (17:48 +0100)]
target-mips: fix get_physical_address() #if 0 build error

In get_physical_address() is a qemu_log() call inside an #if 0 block.
When enabled the following build error is hit:

target-mips/helper.c In function ‘get_physical_address’:
target-mips/helper.c:220:13: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 5 has type ‘hwaddr’ [-Werror=format]

Fix the *physical (hwaddr) formatting by using "%"HWADDR_PRIx instead of
TARGET_FMT_lx.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
11 years agokvm-stub: fix compilation
Paolo Bonzini [Tue, 27 Aug 2013 15:13:44 +0000 (17:13 +0200)]
kvm-stub: fix compilation

Non-KVM targets fail compilation on the uq/master branch.
Fix the prototype of kvm_irqchip_add_irqfd_notifier to match
the one in kvm-all.c.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
11 years agogtk: Remove unused include statements which are not portable
Stefan Weil [Sun, 18 Aug 2013 07:26:34 +0000 (09:26 +0200)]
gtk: Remove unused include statements which are not portable

These include files don't exist for MinGW and are not needed for Linux
(and hopefully for other hosts as well), so remove them.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
11 years agow32: Add an icon resource
Stefan Weil [Sat, 17 Aug 2013 07:32:04 +0000 (09:32 +0200)]
w32: Add an icon resource

The QEMU mascot which was already used for the NSIS installer
is now used for all QEMU executables.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
11 years agow32: Fix broken out-of-tree builds (missing version.o)
Stefan Weil [Fri, 16 Aug 2013 19:51:53 +0000 (21:51 +0200)]
w32: Fix broken out-of-tree builds (missing version.o)

Commit 0b516ef0dfad9a7b34c675c98e8ec92ab4d38466 added version.o to all
executables, but broke out-of-tree builds: for those builds the pattern
rule %.o: %.rc from rules.mak does not match, so version.o was no longer
built.

Adding explicit build rules fixes this.

Reported-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Tested-by: Michael Roth <mdroth@linux.vnet.ibm.com>
11 years agotcg-i386: Use new return-argument ld/st helpers
Richard Henderson [Thu, 25 Jul 2013 17:16:52 +0000 (07:16 -1000)]
tcg-i386: Use new return-argument ld/st helpers

Discontinue the jump-around-jump-to-jump scheme, trading it for a single
immediate move instruction.  The two extra jumps always consume 7 bytes,
whereas the immediate move is either 5 or 7 bytes depending on where the
code_gen_buffer gets located.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg: Tidy softmmu_template.h
Richard Henderson [Fri, 26 Jul 2013 18:29:15 +0000 (08:29 -1000)]
tcg: Tidy softmmu_template.h

Avoid a loop in the tlb_fill path; the fill will either succeed or
generate an exception.

Inline the slow_ld/st function; it was a complete copy of the main
helper except for the actual cross-page unaligned code, and the
compiler was inlining it anyway.

Add unlikely markers optimizing for the most common case of simple
tlb miss.

Make sure the compiler can optimize away the unaligned paths for a
1 byte access.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg: Add mmu helpers that take a return address argument
Richard Henderson [Thu, 25 Jul 2013 00:54:12 +0000 (14:54 -1000)]
tcg: Add mmu helpers that take a return address argument

Allow the code that tcg generates to be less obtuse, passing in
the return address directly instead of computing it in the helper.

Maintain the old entrance point unchanged as an alternate entry point.

Delete the helper_st*_cmmu prototypes; the implementations did not exist.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg-i386: Tidy qemu_ld/st slow path
Richard Henderson [Thu, 25 Jul 2013 16:33:33 +0000 (06:33 -1000)]
tcg-i386: Tidy qemu_ld/st slow path

Use existing stack space for arguments; don't push/pop.
Use less ifdefs and more C ifs.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg-i386: Try pc-relative lea for constant formation
Richard Henderson [Thu, 25 Jul 2013 20:00:41 +0000 (10:00 -1000)]
tcg-i386: Try pc-relative lea for constant formation

Use a 7 byte lea before the ultimate 10 byte movq.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg-i386: Add and use tcg_out64
Richard Henderson [Thu, 25 Jul 2013 19:42:17 +0000 (09:42 -1000)]
tcg-i386: Add and use tcg_out64

No point in splitting the write into 32-bit pieces.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agotcg: Tidy generated code for tcg_outN
Richard Henderson [Wed, 14 Aug 2013 16:46:38 +0000 (09:46 -0700)]
tcg: Tidy generated code for tcg_outN

Aliasing was forcing s->code_ptr to be re-read after the store.
Keep the pointer in a local variable to help the compiler.

Signed-off-by: Richard Henderson <rth@twiddle.net>
11 years agoMerge remote-tracking branch 'stefanha/block' into staging
Anthony Liguori [Mon, 26 Aug 2013 14:19:50 +0000 (09:19 -0500)]
Merge remote-tracking branch 'stefanha/block' into staging

# By Alex Bligh (32) and others
# Via Stefan Hajnoczi
* stefanha/block: (42 commits)
  win32-aio: drop win32_aio_flush_cb()
  aio-win32: replace incorrect AioHandler->opaque usage with ->e
  aio / timers: remove dummy_io_handler_flush from tests/test-aio.c
  aio / timers: Remove legacy interface
  aio / timers: Switch entire codebase to the new timer API
  aio / timers: Add scripts/switch-timer-api
  aio / timers: Add test harness for AioContext timers
  aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API
  aio / timers: Convert rtc_clock to be a QEMUClockType
  aio / timers: Remove main_loop_timerlist
  aio / timers: Rearrange timer.h & make legacy functions call non-legacy
  aio / timers: Add qemu_clock_get_ms and qemu_clock_get_ms
  aio / timers: Remove legacy qemu_clock_deadline & qemu_timerlist_deadline
  aio / timers: Remove alarm timers
  aio / timers: Add documentation and new format calls
  aio / timers: Use all timerlists in icount warp calculations
  aio / timers: Introduce new API timer_new and friends
  aio / timers: On timer modification, qemu_notify or aio_notify
  aio / timers: Convert mainloop to use timeout
  aio / timers: Convert aio_poll to use AioContext timers' deadline
  ...

Message-id: 1377202298-22896-1-git-send-email-stefanha@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
11 years agoMerge remote-tracking branch 'afaerber/tags/0.15-maintainer-for-anthony' into staging
Anthony Liguori [Mon, 26 Aug 2013 14:19:36 +0000 (09:19 -0500)]
Merge remote-tracking branch 'afaerber/tags/0.15-maintainer-for-anthony' into staging

MAINTAINERS update for stable-0.15

# gpg: Signature made Thu 22 Aug 2013 10:59:31 AM CDT using RSA key ID 3E7E013F
# gpg: Can't check signature: public key not found

# By Andreas Färber
# Via Andreas Färber
* afaerber/tags/0.15-maintainer-for-anthony:
  MAINTAINERS: Take over 0.15 maintenance

11 years agovirtio: virtqueue_get_avail_bytes: fix desc_pa when loop over the indirect descriptor...
yinyin [Thu, 22 Aug 2013 06:47:16 +0000 (14:47 +0800)]
virtio: virtqueue_get_avail_bytes: fix desc_pa when loop over the indirect descriptor table

virtqueue_get_avail_bytes: when found a indirect desc, we need loop over it.
           /* loop over the indirect descriptor table */
           indirect = 1;
           max = vring_desc_len(desc_pa, i) / sizeof(VRingDesc);
           num_bufs = i = 0;
           desc_pa = vring_desc_addr(desc_pa, i);
But, It init i to 0, then use i to update desc_pa. so we will always get:
desc_pa = vring_desc_addr(desc_pa, 0);
the last two line should swap.

Cc: qemu-stable@nongnu.org
Signed-off-by: Yin Yin <yin.yin@cs2c.com.cn>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agodisas-objdump: Pass --adjust-vma to objdump
Richard Henderson [Sat, 17 Aug 2013 06:29:47 +0000 (23:29 -0700)]
disas-objdump: Pass --adjust-vma to objdump

This gives the dumped blob its correct address during disassembly,
which makes pc-relative insns much easier to interpret.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
11 years agodisas: Add disas-objdump.pl
Richard Henderson [Sat, 17 Aug 2013 06:29:46 +0000 (23:29 -0700)]
disas: Add disas-objdump.pl

The script massages the output produced for architectures that are
not supported internally by qemu though an external objdump program
for disassembly.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
11 years agodisas: Implement fallback to dump object code as hex
Richard Henderson [Sat, 17 Aug 2013 06:29:45 +0000 (23:29 -0700)]
disas: Implement fallback to dump object code as hex

The OBJD-[HT] tags will be used by a script to run the hex blob
through objdump --disassemble.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
11 years agokvm: shorten the parameter list for get_real_device()
Wei Yang [Thu, 22 Aug 2013 16:40:12 +0000 (18:40 +0200)]
kvm: shorten the parameter list for get_real_device()

get_real_device() has 5 parameters with the last 4 is contained in the first
structure.

This patch removes the last 4 parameters and directly use them from the first
parameter.

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
11 years agowin32-aio: drop win32_aio_flush_cb()
Stefan Hajnoczi [Thu, 22 Aug 2013 13:28:36 +0000 (15:28 +0200)]
win32-aio: drop win32_aio_flush_cb()

The io_flush argument to qemu_aio_set_event_notifier() has been removed
since the block layer learnt to drain requests by itself.  Fix the
Windows build for win32-aio.o by updating the
qemu_aio_set_event_notifier() call and dropping win32_aio_flush_cb().

Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio-win32: replace incorrect AioHandler->opaque usage with ->e
Stefan Hajnoczi [Thu, 22 Aug 2013 13:28:35 +0000 (15:28 +0200)]
aio-win32: replace incorrect AioHandler->opaque usage with ->e

The AioHandler->opaque field does not exist in aio-win32.c.  The code
that uses it was incorrectly copied from aio-posix.c.  For Windows we
can use AioHandler->e to match against AioContext->notifier.

This patch fixes the Windows build for aio-win32.o.

Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: remove dummy_io_handler_flush from tests/test-aio.c
Alex Bligh [Thu, 22 Aug 2013 18:59:16 +0000 (19:59 +0100)]
aio / timers: remove dummy_io_handler_flush from tests/test-aio.c

Remove dummy_io_handler_flush from tests/test-aio.c as it does
nothing now.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Remove legacy interface
Alex Bligh [Wed, 21 Aug 2013 15:03:09 +0000 (16:03 +0100)]
aio / timers: Remove legacy interface

Remove the legacy interface from include/qemu/timers.h.

Ensure struct QEMUClock is not exposed at all.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Switch entire codebase to the new timer API
Alex Bligh [Wed, 21 Aug 2013 15:03:08 +0000 (16:03 +0100)]
aio / timers: Switch entire codebase to the new timer API

This is an autogenerated patch using scripts/switch-timer-api.

Switch the entire code base to using the new timer API.

Note this patch may introduce some line length issues.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add scripts/switch-timer-api
Alex Bligh [Wed, 21 Aug 2013 15:03:07 +0000 (16:03 +0100)]
aio / timers: Add scripts/switch-timer-api

Add scripts/switch-timer-api to programatically rewrite source
files to use the new timer system.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add test harness for AioContext timers
Alex Bligh [Wed, 21 Aug 2013 15:03:06 +0000 (16:03 +0100)]
aio / timers: Add test harness for AioContext timers

Add a test harness for AioContext timers. The g_source equivalent is
unsatisfactory as it suffers from false wakeups.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: convert block_job_sleep_ns and co_sleep_ns to new API
Alex Bligh [Wed, 21 Aug 2013 15:03:05 +0000 (16:03 +0100)]
aio / timers: convert block_job_sleep_ns and co_sleep_ns to new API

Convert block_job_sleep_ns and co_sleep_ns to use the new timer
API.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Convert rtc_clock to be a QEMUClockType
Alex Bligh [Wed, 21 Aug 2013 15:03:04 +0000 (16:03 +0100)]
aio / timers: Convert rtc_clock to be a QEMUClockType

Convert rtc_clock to be a QEMUClockType

Move rtc_clock users to use the new API

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Remove main_loop_timerlist
Alex Bligh [Wed, 21 Aug 2013 15:03:03 +0000 (16:03 +0100)]
aio / timers: Remove main_loop_timerlist

Now we have timerlistgroups implemented and main_loop_tlg, we
no longer need the concept of a default timer list associated
with each clock. Remove it and simplify initialisation of
clocks and timer lists.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Rearrange timer.h & make legacy functions call non-legacy
Alex Bligh [Wed, 21 Aug 2013 15:03:02 +0000 (16:03 +0100)]
aio / timers: Rearrange timer.h & make legacy functions call non-legacy

Rearrange timer.h so it is in order by function type.

Make legacy functions call non-legacy functions rather than vice-versa.

Convert cpus.c to use new API.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add qemu_clock_get_ms and qemu_clock_get_ms
Alex Bligh [Wed, 21 Aug 2013 15:03:01 +0000 (16:03 +0100)]
aio / timers: Add qemu_clock_get_ms and qemu_clock_get_ms

Add utility functions qemu_clock_get_ms and qemu_clock_get_us

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Remove legacy qemu_clock_deadline & qemu_timerlist_deadline
Alex Bligh [Wed, 21 Aug 2013 15:03:00 +0000 (16:03 +0100)]
aio / timers: Remove legacy qemu_clock_deadline & qemu_timerlist_deadline

Remove qemu_clock_deadline and qemu_timerlist_deadline now we are using
the ns functions throughout.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Remove alarm timers
Alex Bligh [Wed, 21 Aug 2013 15:02:59 +0000 (16:02 +0100)]
aio / timers: Remove alarm timers

Remove alarm timers from qemu-timers.c now we use g_poll / ppoll
instead.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add documentation and new format calls
Alex Bligh [Wed, 21 Aug 2013 15:02:58 +0000 (16:02 +0100)]
aio / timers: Add documentation and new format calls

Add documentation for existing qemu timer calls. Add new format
calls of the format timer_XXX rather than qemu_XXX_timer
for consistency.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Use all timerlists in icount warp calculations
Alex Bligh [Wed, 21 Aug 2013 15:02:57 +0000 (16:02 +0100)]
aio / timers: Use all timerlists in icount warp calculations

Notify all timerlists derived from vm_clock in icount warp
calculations.

When calculating timer delay based on vm_clock deadline, use
all timerlists.

For compatibility, maintain an apparent bug where when using
icount, if no vm_clock timer was set, qemu_clock_deadline
would return INT32_MAX and always set an icount clock expiry
about 2 seconds ahead.

NB: thread safety - when different timerlists sit on different
threads, this will need some locking.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Introduce new API timer_new and friends
Alex Bligh [Wed, 21 Aug 2013 15:02:56 +0000 (16:02 +0100)]
aio / timers: Introduce new API timer_new and friends

Introduce new API for creating timers - timer_new and
_ns, _ms, _us derivatives.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: On timer modification, qemu_notify or aio_notify
Alex Bligh [Wed, 21 Aug 2013 15:02:55 +0000 (16:02 +0100)]
aio / timers: On timer modification, qemu_notify or aio_notify

On qemu_mod_timer_ns, ensure qemu_notify or aio_notify is called to
end the appropriate poll(), irrespective of use_icount value.

On qemu_clock_enable, ensure qemu_notify or aio_notify is called for
all QEMUTimerLists attached to the QEMUClock.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Convert mainloop to use timeout
Alex Bligh [Wed, 21 Aug 2013 15:02:54 +0000 (16:02 +0100)]
aio / timers: Convert mainloop to use timeout

Convert mainloop to use timeout from default timerlist group
(i.e. the current 3 static timers)

main-loop.c produces a (possibly spurious) warning about
multiple iterations. Adapt the way this works for a signed
timeout and make the warning a bit safer.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Convert aio_poll to use AioContext timers' deadline
Alex Bligh [Wed, 21 Aug 2013 15:02:53 +0000 (16:02 +0100)]
aio / timers: Convert aio_poll to use AioContext timers' deadline

Convert aio_poll to use deadline based on AioContext's timers.

aio_poll has been changed to return accurately whether progress
has occurred. Prior to this commit, aio_poll always returned
true if g_poll was entered, whether or not any progress was
made. This required a change to tests/test-aio.c where an
assert was backwards.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add aio_timer_init & aio_timer_new wrappers
Alex Bligh [Wed, 21 Aug 2013 15:02:52 +0000 (16:02 +0100)]
aio / timers: Add aio_timer_init & aio_timer_new wrappers

Add aio_timer_init and aio_timer_new wrapper functions.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: aio_ctx_prepare sets timeout from AioContext timers
Alex Bligh [Wed, 21 Aug 2013 15:02:51 +0000 (16:02 +0100)]
aio / timers: aio_ctx_prepare sets timeout from AioContext timers

Calculate the timeout in aio_ctx_prepare taking into account
the timers attached to the AioContext.

Alter aio_ctx_check similarly.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add a notify callback to QEMUTimerList
Alex Bligh [Wed, 21 Aug 2013 15:02:50 +0000 (16:02 +0100)]
aio / timers: Add a notify callback to QEMUTimerList

Add a notify pointer to QEMUTimerList so it knows what to notify
on a timer change.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add QEMUTimerListGroup to AioContext
Alex Bligh [Wed, 21 Aug 2013 15:02:49 +0000 (16:02 +0100)]
aio / timers: Add QEMUTimerListGroup to AioContext

Add a QEMUTimerListGroup each AioContext (meaning a QEMUTimerList
associated with each clock is added) and delete it when the
AioContext is freed.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add QEMUTimerListGroup and helper functions
Alex Bligh [Wed, 21 Aug 2013 15:02:48 +0000 (16:02 +0100)]
aio / timers: Add QEMUTimerListGroup and helper functions

Add QEMUTimerListGroup and helper functions, to represent
a QEMUTimerList associated with each clock. Add a default
QEMUTimerListGroup representing the default timer lists
which are not associated with any other object (e.g.
an AioContext as added by future patches).

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Untangle include files
Alex Bligh [Wed, 21 Aug 2013 15:02:47 +0000 (16:02 +0100)]
aio / timers: Untangle include files

include/qemu/timer.h has no need to include main-loop.h and
doing so causes an issue for the next patch. Unfortunately
various files assume including timers.h will pull in main-loop.h.
Untangle this mess.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Split QEMUClock into QEMUClock and QEMUTimerList
Alex Bligh [Wed, 21 Aug 2013 15:02:46 +0000 (16:02 +0100)]
aio / timers: Split QEMUClock into QEMUClock and QEMUTimerList

Split QEMUClock into QEMUClock and QEMUTimerList so that we can
have more than one QEMUTimerList associated with the same clock.

Introduce a main_loop_timerlist concept and make existing
qemu_clock_* calls that actually should operate on a QEMUTimerList
call the relevant QEMUTimerList implementations, using the clock's
default timerlist. This vastly reduces the invasiveness of this
change and means the API stays constant for existing users.

Introduce a list of QEMUTimerLists associated with each clock
so that reenabling the clock can cause all the notifiers
to be called. Note the code to do the notifications is added
in a later patch.

Switch QEMUClockType to an enum. Remove global variables vm_clock,
host_clock and rt_clock and add compatibility defines. Do not
fix qemu_next_alarm_deadline as it's going to be deleted.

Add qemu_clock_use_for_deadline to indicate whether a particular
clock should be used for deadline calculations. When use_icount
is true, vm_clock should not be used for deadline calculations
as it does not contain a nanosecond count. Instead, icount
timeouts come from the execution thread doing aio_notify or
qemu_notify as appropriate. This function is used in the next
patch.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Make qemu_run_timers and qemu_run_all_timers return progress
Alex Bligh [Wed, 21 Aug 2013 15:02:45 +0000 (16:02 +0100)]
aio / timers: Make qemu_run_timers and qemu_run_all_timers return progress

Make qemu_run_timers and qemu_run_all_timers return progress
so that aio_poll etc. can determine whether a timer has been
run.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack
Alex Bligh [Wed, 21 Aug 2013 15:02:44 +0000 (16:02 +0100)]
aio / timers: Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack

Where supported, called prctl(PR_SET_TIMERSLACK, 1, ...) to
set one nanosecond timer slack to increase precision of timer
calls.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: add ppoll support with qemu_poll_ns
Alex Bligh [Wed, 21 Aug 2013 15:02:43 +0000 (16:02 +0100)]
aio / timers: add ppoll support with qemu_poll_ns

Add qemu_poll_ns which works like g_poll but takes a nanosecond
timeout.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoMAINTAINERS: Take over 0.15 maintenance
Andreas Färber [Fri, 13 Apr 2012 15:54:02 +0000 (17:54 +0200)]
MAINTAINERS: Take over 0.15 maintenance

SUSE is shipping qemu-kvm 0.15.1 with SLES 11 SP2 so we will be actively
tracking all KVM-related issues. Therefore upgrade to Supported.

Signed-off-by: Andreas Färber <afaerber@suse.de>
11 years agoMerge remote-tracking branch 'luiz/queue/qmp' into staging
Anthony Liguori [Thu, 22 Aug 2013 14:29:25 +0000 (09:29 -0500)]
Merge remote-tracking branch 'luiz/queue/qmp' into staging

# By Laszlo Ersek (8) and others
# Via Luiz Capitulino
* luiz/queue/qmp:
  scripts/qapi.py: Avoid syntax not supported by Python 2.4
  monitor: print the invalid char in error message
  OptsVisitor: introduce unit tests, with test cases for range flattening
  add "test-int128" and "test-bitops" to .gitignore
  OptsVisitor: don't try to flatten overlong integer ranges
  OptsVisitor: opts_type_uint64(): recognize intervals when LM_IN_PROGRESS
  OptsVisitor: rebase opts_type_uint64() to parse_uint_full()
  OptsVisitor: opts_type_int(): recognize intervals when LM_IN_PROGRESS
  OptsVisitor: introduce list modes for interval flattening
  OptsVisitor: introduce basic list modes
  Convert stderr message calling error_get_pretty() to error_report()

Message-id: 1377015041-6567-1-git-send-email-lcapitulino@redhat.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
11 years agoMerge remote-tracking branch 'jliu/or32' into staging
Anthony Liguori [Thu, 22 Aug 2013 14:29:13 +0000 (09:29 -0500)]
Merge remote-tracking branch 'jliu/or32' into staging

# By Jia Liu
# Via Jia Liu
* jliu/or32:
  hw/openrisc: Avoid undefined shift in openrisc_pic_cpu_handler()
  hw/openrisc: Fix masking in openrisc_pic_cpu_handler()
  hw/openrisc: Avoid using uninitialised variable 'entry'

Message-id: 1377050811-11116-1-git-send-email-proljc@gmail.com
Signed-off-by: Anthony Liguori <anthony@codemonkey.ws>
11 years agoaio / timers: Consistent treatment of disabled clocks for deadlines
Alex Bligh [Wed, 21 Aug 2013 15:02:42 +0000 (16:02 +0100)]
aio / timers: Consistent treatment of disabled clocks for deadlines

Make treatment of disabled clocks consistent in deadline calculation

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: add qemu-timer.c utility functions
Alex Bligh [Wed, 21 Aug 2013 15:02:41 +0000 (16:02 +0100)]
aio / timers: add qemu-timer.c utility functions

Add utility functions to qemu-timer.c for nanosecond timing.

Add qemu_clock_deadline_ns to calculate deadlines to
nanosecond accuracy.

Add utility function qemu_soonest_timeout to calculate soonest deadline.

Add qemu_timeout_ns_to_ms to convert a timeout in nanoseconds back to
milliseconds for when ppoll is not used.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Rename qemu_new_clock and expose clock types
Alex Bligh [Wed, 21 Aug 2013 15:02:40 +0000 (16:02 +0100)]
aio / timers: Rename qemu_new_clock and expose clock types

Rename qemu_new_clock to qemu_clock_new.

Expose clock types.

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoaio / timers: Rename qemu_timer_* functions
Alex Bligh [Wed, 21 Aug 2013 15:02:39 +0000 (16:02 +0100)]
aio / timers: Rename qemu_timer_* functions

Rename four functions in preparation for new API.

Rename qemu_timer_expired to timer_expired
Rename qemu_timer_expire_time_ns to timer_expire_time_ns
Rename qemu_timer_pending to timer_pending
Rename qemu_timer_expired_ns to timer_expired_ns

Signed-off-by: Alex Bligh <alex@alex.org.uk>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agovmdk: support vmfs files
Paolo Bonzini [Mon, 19 Aug 2013 10:54:28 +0000 (18:54 +0800)]
vmdk: support vmfs files

VMware ESX hosts also use different create and extent types for flat
files, respectively "vmfs" and "VMFS".  This is not documented, but it
can be found at http://kb.vmware.com/kb/10002511 (Recreating a missing
virtual machine disk (VMDK) descriptor file).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agovmdk: support vmfsSparse files
Fam Zheng [Mon, 19 Aug 2013 10:54:27 +0000 (18:54 +0800)]
vmdk: support vmfsSparse files

VMware ESX hosts use a variant of the VMDK3 format, identified by the
vmfsSparse create type ad the VMFSSPARSE extent type.

It has 16 KB grain tables (L2) and a variable-size grain directory (L1).
In addition, the grain size is always 512, but that is not a problem
because it is included in the header.

The format of the extents is documented in the VMDK spec.  The format
of the descriptor file is not documented precisely, but it can be
found at http://kb.vmware.com/kb/10026353 (Recreating a missing virtual
machine disk (VMDK) descriptor file for delta disks).

With these patches, vmfsSparse files only work if opened through the
descriptor file.  Data files without descriptor files, as far as I
could understand, are not supported by ESX.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
--
v2: Rebase to patch 01.
    Change le64_to_cpu to le32_to_cpu.
    Rename vmdk_open_vmdk3 to vmdk_open_vmfs_sparse, which represents the
    current usage of this format.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agovmdk: fix L1 and L2 table size in vmdk3 open
Fam Zheng [Mon, 19 Aug 2013 10:54:26 +0000 (18:54 +0800)]
vmdk: fix L1 and L2 table size in vmdk3 open

VMDK3 header has the field l1dir_size, but vmdk_open_vmdk3 hardcoded the
value. This patch honors the header field.

And the L2 table size is 4096 according to VMDK spec[1], instead of
1 << 9 (512).

[1]:
http://www.vmware.com/support/developer/vddk/vmdk_50_technote.pdf?src=vmdk

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agovmdk: Move l1_size check into vmdk_add_extent()
Fam Zheng [Mon, 19 Aug 2013 10:54:25 +0000 (18:54 +0800)]
vmdk: Move l1_size check into vmdk_add_extent()

This header check is common to VMDK3 and VMDK4, so move it into
vmdk_add_extent().

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoblock: better error message for read only format name
Fam Zheng [Thu, 22 Aug 2013 07:36:59 +0000 (15:36 +0800)]
block: better error message for read only format name

When user tries to use read-only whitelist format in the command line
option, failure message was "'foo' invalid format". It might be invalid
only for writable, but valid for read-only, so it is confusing. Give the
user easier to understand information.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoblock: Produce zeros when protocols reading beyond end of file
MORITA Kazutaka [Tue, 6 Aug 2013 01:53:40 +0000 (09:53 +0800)]
block: Produce zeros when protocols reading beyond end of file

While Asias is debugging an issue creating qcow2 images on top of
non-file protocols.  It boils down to this example using NBD:

$ qemu-io -c 'open -g nbd+unix:///?socket=/tmp/nbd.sock' -c 'read -v 0 512'

Notice the open -g option to set bs->growable.  This means you can
read/write beyond end of file.  Reading beyond end of file is supposed
to produce zeroes.

We rely on this behavior in qcow2_create2() during qcow2 image
creation.  We create a new file and then write the qcow2 header
structure using bdrv_pwrite().  Since QCowHeader is not a multiple of
sector size, block.c first uses bdrv_read() on the empty file to fetch
the first sector (should be all zeroes).

Here is the output from the qemu-io NBD example above:

$ qemu-io -c 'open -g nbd+unix:///?socket=/tmp/nbd.sock' -c 'read -v 0 512'
00000000:  ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab  ................
00000010:  ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab  ................
00000020:  ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab ab  ................
...

We are not zeroing the buffer!  As a result qcow2 image creation on top
of protocols is not guaranteed to work even when file creation is
supported by the protocol.

[Adapted this patch to use bs->zero_beyond_eof.
-- Stefan]

Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoblock: Introduce bs->zero_beyond_eof
Asias He [Thu, 22 Aug 2013 07:24:14 +0000 (15:24 +0800)]
block: Introduce bs->zero_beyond_eof

In 4146b46c42e0989cb5842e04d88ab6ccb1713a48 (block: Produce zeros when
protocols reading beyond end of file), we break qemu-iotests ./check
-qcow2 022. This happens because qcow2 temporarily sets ->growable = 1
for vmstate accesses (which are stored beyond the end of regular image
data).

We introduce the bs->zero_beyond_eof to allow qcow2_load_vmstate() to
disable ->zero_beyond_eof temporarily in addition to enable ->growable.

[Since the broken patch "block: Produce zeros when protocols reading
beyond end of file" has not been merged yet, I have applied this fix
*first* and will then apply the next patch to keep the tree bisectable.
-- Stefan]

Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agopc_piix: Kill pc_init1() memory region args
Eduardo Habkost [Wed, 21 Aug 2013 18:14:45 +0000 (15:14 -0300)]
pc_piix: Kill pc_init1() memory region args

All callers always use the same values (get_system_memory(),
get_system_io()), so the parameters are pointless.

If one day we decide to eliminate get_system_memory() and
get_system_io(), we will be able to do that more easily by adding the
values to struct QEMUMachineInitArgs.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agopc: pc_compat_1_4() now can call pc_compat_1_5()
Eduardo Habkost [Wed, 21 Aug 2013 18:14:44 +0000 (15:14 -0300)]
pc: pc_compat_1_4() now can call pc_compat_1_5()

It just needs to set has_pvpanic=false after calling it. This way, it
won't be a special case anymore.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agopc: Create pc_compat_*() functions
Eduardo Habkost [Wed, 21 Aug 2013 18:14:43 +0000 (15:14 -0300)]
pc: Create pc_compat_*() functions

Making the older compat functions call the newer compat functions at the
beginning allows the older functions undo what's done by newer compat
functions. e.g.: pc_compat_1_4() will be able to call pc_compat_1_5()
and then set has_pvpanic=false.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agopc: Kill pc_init_pci_1_0()
Eduardo Habkost [Wed, 21 Aug 2013 18:14:42 +0000 (15:14 -0300)]
pc: Kill pc_init_pci_1_0()

The pc_init_pci_1_2()/pc_init_pci_1_0() split was made on commit
6fd028f64f662c801fd5a54d0e3a1d2baeee93ea, in preparation for commit
9953f8822cc316eec9962f0a2858c3439a80adec. The latter was reverted, so there's
no reason to keep two separate functions that do exactly the same, anymore.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agopc: Don't explode QEMUMachineInitArgs into local variables needlessly
Markus Armbruster [Wed, 21 Aug 2013 18:14:41 +0000 (15:14 -0300)]
pc: Don't explode QEMUMachineInitArgs into local variables needlessly

Don't explode when the variable is used just a few times, and never
changed.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agopc: Don't prematurely explode QEMUMachineInitArgs
Markus Armbruster [Wed, 21 Aug 2013 18:14:40 +0000 (15:14 -0300)]
pc: Don't prematurely explode QEMUMachineInitArgs

Don't explode QEMUMachineInitArgs before passing it to pc_init1().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agoppc: Don't duplicate QEMUMachineInitArgs in PPCE500Params
Markus Armbruster [Fri, 16 Aug 2013 11:13:49 +0000 (13:13 +0200)]
ppc: Don't duplicate QEMUMachineInitArgs in PPCE500Params

Pass on the generic arguments unadulterated, and the machine-specific
ones as separate argument.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agoppc: Don't explode QEMUMachineInitArgs into local variables needlessly
Markus Armbruster [Fri, 16 Aug 2013 11:13:48 +0000 (13:13 +0200)]
ppc: Don't explode QEMUMachineInitArgs into local variables needlessly

Don't explode when the variable is used just once, and never changed.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agosun4: Don't prematurely explode QEMUMachineInitArgs
Markus Armbruster [Fri, 16 Aug 2013 11:13:47 +0000 (13:13 +0200)]
sun4: Don't prematurely explode QEMUMachineInitArgs

Don't explode QEMUMachineInitArgs before passing it to
sun4m_hw_init(), sun4uv_init().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agoqcow2: Change default for new images to compat=1.1
Kevin Wolf [Mon, 19 Aug 2013 08:38:01 +0000 (10:38 +0200)]
qcow2: Change default for new images to compat=1.1

By the time that qemu 1.7 will be released, enough time will have passed
since qemu 1.1, which is the first version to understand version 3
images, that changing the default shouldn't hurt many people any more
and the benefits of using the new format outweigh the pain.

qemu-iotests already runs with compat=1.1 by default.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
11 years agoq35: Add PCIe switch to example q35 configuration
Alex Williamson [Tue, 20 Aug 2013 18:21:57 +0000 (12:21 -0600)]
q35: Add PCIe switch to example q35 configuration

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
11 years agohw/openrisc: Avoid undefined shift in openrisc_pic_cpu_handler()
Jia Liu [Wed, 21 Aug 2013 01:31:36 +0000 (09:31 +0800)]
hw/openrisc: Avoid undefined shift in openrisc_pic_cpu_handler()

In C99 signed shift (1 << 31) is undefined behavior, since the result
exceeds INT_MAX.  Use 1U instead and move the shift after the check.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Jia Liu <proljc@gmail.com>
11 years agohw/openrisc: Fix masking in openrisc_pic_cpu_handler()
Jia Liu [Wed, 21 Aug 2013 01:23:10 +0000 (09:23 +0800)]
hw/openrisc: Fix masking in openrisc_pic_cpu_handler()

Consider the masking of PICSR and PICMR:

    ((cpu->env.picsr && (1 << i)) && (cpu->env.picmr && (1 << i)))

To correctly mask bits, we should use the bitwise AND "&" rather than
the logical AND "&&".  Also, the loop is not necessary for masking.
Simply use (cpu->env.picsr & cpu->env.picmr).

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Acked-by: Jia Liu <proljc@gmail.com>
11 years agohw/openrisc: Avoid using uninitialised variable 'entry'
Jia Liu [Wed, 21 Aug 2013 00:54:29 +0000 (08:54 +0800)]
hw/openrisc: Avoid using uninitialised variable 'entry'

clang warns that cpu_openrisc_load_kernel() can use 'entry' uninitialized:

hw/openrisc/openrisc_sim.c:69:9: error: variable 'entry' is used uninitialized
whenever '&&' condition is false [-Werror,-Wsometimes-uninitialized]

    if (kernel_filename && !qtest_enabled()) {
        ^~~~~~~~~~~~~~~
hw/openrisc/openrisc_sim.c:91:19: note: uninitialized use occurs here
    cpu->env.pc = entry;
                  ^~~~~

Fix this by not attempting to change the CPU's starting PC unless
we actually loaded a kernel.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Jia Liu <proljc@gmail.com>
11 years agoloader: store FW CFG ROM files in RAM
Michael S. Tsirkin [Mon, 19 Aug 2013 14:26:55 +0000 (17:26 +0300)]
loader: store FW CFG ROM files in RAM

ROM files that are put in FW CFG are copied to guest ram, by BIOS, but
they are not backed by RAM so they don't get migrated.

Each time we change two bytes in such a ROM this breaks cross-version
migration: since we can migrate after BIOS has read the first byte but
before it has read the second one, getting an inconsistent state.

Future-proof this by creating, for each such ROM,
an MR serving as the backing store.
This MR is never mapped into guest memory, but it's registered
as RAM so it's migrated with the guest.

Naturally, this only helps for -M 1.7 and up, older machine types
will still have the cross-version migration bug.
Luckily the race window for the problem to trigger is very small,
which is also likely why we didn't notice the cross-version
migration bug in testing yet.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
11 years agoarch_init: align MR size to target page size
Michael S. Tsirkin [Mon, 19 Aug 2013 14:26:52 +0000 (17:26 +0300)]
arch_init: align MR size to target page size

Migration code assumes that each MR is a multiple of TARGET_PAGE_SIZE:
MR size is divided by TARGET_PAGE_SIZE, so if it isn't migration
never completes.
But this isn't really required for regions set up with
memory_region_init_ram, since that calls qemu_ram_alloc
which aligns size up using TARGET_PAGE_ALIGN.

Align MR size up to full target page sizes, this way
migration completes even if we create a RAM MR
which is not a full target page size.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
11 years agopc: cleanup 1.4 compat support
Michael S. Tsirkin [Sun, 18 Aug 2013 13:50:02 +0000 (16:50 +0300)]
pc: cleanup 1.4 compat support

Make 1.4 compat code call the 1.6 one, reducing
code duplication. Add comment explaining why we can't
make 1.4 call 1.5 as usual.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>