Currently, after a migration qemu sends a broadcast packet to update
switches' MAC->port mappings.

Unfortunately, it picks a random (constant) ethertype and crosses its
fingers that no one else is using it.

This patch causes it to send a RARP packet instead.  RARP was chosen for
2 reasons.  One, it is always harmless, and will continue to be so even
as new ethertypes are allocated.  Two, it is what VMware ESX sends, so
people who write filtering rules for switches already know about it.

I also changed the code to send SELF_ANNOUNCE_ROUNDS packets, instead of
SELF_ANNOUNCE_ROUNDS + 1, and added a simple backoff scheme.

Signed-off-by: Nolan Leake <nolan <at> sigbus.net>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

On Wed, Sep 23, 2009 at 10:55:02PM +0200, Juergen Lock wrote:
> On Wed, Sep 23, 2009 at 09:31:16PM +0100, Laurence Tratt wrote:
>[...]
> >  then the above error doesn't occur, but
> > pc-bios/optionrom/multiboot.S dies as follows:
> >
> >   $
> >     AS    optionrom/multiboot.o
> >   multiboot.S: Assembler messages:
> >   multiboot.S:116: Error: `%es:-4(%edi)' is not a valid 16 bit base/index
> > expression
> >   $
> >
> > What little Intel assembler I ever knew has long since departed from my
> > brain, so I don't know why that error occurs, nor what a fix might be.
> >
>  It occurs because of too old binutils (as(1) in this case), on FreeBSD
> we now have a port for newer ones,
> 	http://www.freshports.org/devel/binutils
> so I depend on that and have the optionrom Makefile use the new as
> like this: (the first change wrt CFLAGS is unrelated and has probably
> been fixed in the meantime; it caused gmake to complain about
> recursive use of CFLAGS.)
>
> Index: qemu/pc-bios/optionrom/Makefile
> @@ -9,10 +9,13 @@
>
>  CFLAGS = -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-builtin
>  CFLAGS += -I$(SRC_PATH)
> -CFLAGS += $(call cc-option, $(CFLAGS), -fno-stack-protector,"")
> +CFLAGS := $(CFLAGS) $(call cc-option, $(CFLAGS), -fno-stack-protector,"")
>
>  build-all: multiboot.bin
>
> +%.o: %.S
> +	$(CC) -E $(CFLAGS) -o - -c $< |${LOCALBASE}/bin/as -V -Qy -o $@
> +
>  %.img: %.o
>  	$(call quiet-command,$(LD) -Ttext 0 -e _start -s -o $@ $<,"  Building $(TARGET_DIR)$@")
>

That patch didn't seem to help on OpenBSD so I now finally got around
making another one that just emits the bytes of the offending insn
instead so people can keep using old assemblers:
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

When using Linux AIO raw still falls back to POSIX AIO sometimes, so we should
initialize it.

Not initializing it happens to work if POSIX AIO is used by another drive, or
if the format is not specified (probing the format uses POSIX AIO) or by pure
luck (e.g. it doesn't seem to happen any more with qcow2 since we have re-added
synchronous qcow2 functions).
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

In case of failure, we haven't increased the refcount for the newly allocated
cluster yet. Therefore we must not free the cluster or its refcount will become
negative (and endless recursion is possible).
Signed-off-by: NKevin Wolf <kwolf@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

0) This is an attempt to get an issue in usb-linux.c, for which a patch
was posted about a year ago, finally fixed.

1) Mark Burkley submitted a "EHCI emulation module" for review in in
October 2008 (see:
http://lists.gnu.org/archive/html/qemu-devel/2008-10/msg01326.html). No
EHCI emulation module was ever committed to qemu.

2) Part of that (large) patch was a fix for a separate issue in
usb-linux.c. Max Krasnyansky has ACK'ed that fix (see:
http://lists.gnu.org/archive/html/qemu-devel/2008-11/msg00032.html).

3) I already asked whether this fix was ready to be committed in last
April (see:
http://lists.gnu.org/archive/html/qemu-devel/2009-04/msg01763.html)

4) Maybe submitting this fix as a separate patch (with a really long
commit message but without a Signed-off-by) and cc-ing everbody involved
will help if actually getting this issue fixed.

Paul Bolle
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This patch makes make quiet again.

There is already a similar patch from Juan Quintela,
but maybe this shorter form is preferred.
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This patch only moves about 150 lines of code from
function eepro100_cu_command to a new function action_command.

A goto statement was replaced by a for loop.

There are no functional changes. Nor did I change comments
starting with // (they will be removed by future patches).
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Current code is broken at least on recent compilers, comparison
between signed and unsigned types yield incorrect code and render
the neon shift helper functions defunct. This is the third revision
of this patch, casting all comparisons with the sizeof operator to
signed ssize_t type to force comparisons to be between signed integral
types.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Shift by immediate value is incorrectly overwritten by a temporary
variable in the processing of NEON vsri, vshl and vsli instructions.
This patch has been revised to also include a fix for the special
case where the code would previously try to shift an integer value
over 31 bits left/right.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

All other bits except for the EN in the VFP FPEXC register are defined
as subarchitecture specific and real functionality for any of the
other bits has not been implemented in QEMU. However, current code
allows modifying all bits in the VFP FPEXC register leading to
problems when guest code is writing 1's to the subarchitecture
specific bits and checking whether the bits stay up to verify the
existence of functionality which in fact does not exist in QEMU.
This patch has been revised to include the same behavior change in
the gdb register write function.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Add support for NEON vld1.64 and vst1.64 instructions. This patch is
revised to follow more closely the specification and raises
undefined exception if 64bit element size is used for vld2/vst2 or
vld4/vst4 instructions.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

In the existing code shift value is clobbered during the pass loop.
This patch changes the code so that it stores the intermediate
result in the target neon register directly and eliminates the need
to use a temporary to hold the intermediate value thus leaving the
shift value in the temporary variable intact. This is a new patch
in this version of the patch series.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

tmp4 and tmp5 temporary variables are allocated using tcg_const_i32
but incorrectly released using dead_tmp which will cause resource
leak tracking to report false leaks.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Also remove unused include directive.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Add a missing call to reset on device init.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Also remove unused include directive.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Also remove unused include directive.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Also remove unused include directive.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

Current implementation of thumb mul instruction is implemented as a
32x32->64 multiply which then uses only 32 least significant bits of
the result. Replace that with a simple 32x32->32 multiply.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Revised patch for getting rid of tcg temporary variable leaks in
target-arm/translate.c. This version also includes the leak patch for
gen_set_cpsr macro, now converted as a static inline function, which I
sent earlier as a separate patch on top of this patch.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

lzcnt is a AMD Phenom/Barcelona added instruction returning the
number of leading zero bits in a word.
As this is similar to the "bsr" instruction, reuse the existing
code. There need to be some more changes, though, as lzcnt always
returns a valid value (in opposite to bsr, which has a special
case when the operand is 0).
lzcnt is guarded by the ABM CPUID bit (Fn8000_0001:ECX_5).
Signed-off-by: NAndre Przywara <andre.przywara@amd.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

(INT32_MIN / -1) triggers an overflow, and the result depends on the
host architecture (INT32_MIN on arm, -1 on ppc, SIGFPE on x86). Use a
test to output the correct value.
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>

Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
Acked-by: NLaurent Desnogues <laurent.desnogues@gmail.com>

Patchworks-ID: 35755
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

The OPENED event gets sent also when qemu resets its state initially.
The consumers of the event aren't interested in receiving this event
on reset.

Patchworks-ID: 35288
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>