Remove some unused variables and return values.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
config write handling for aer seems broken:
For example, it won't clear a level interrupt
when command register is set to 0.
Make it match the spec: level should equal
the logical or of enabled bits, msi only
be sent when the logical or changes.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Fix the injection logic upon aer message to follow 6.2.4.1.2 more
closely: specifically only send an msi interrupt when the logical or of
the enabled bits changed, not when a bit which was previously clear
becomes set.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
msi depends on pci but pci should not depend on msi.
The only dependency we have is a recent addition
of pci_msi_ functions, IMO they add little enough to
open-code in the small number of users.
Follow-up patches add more cleanups.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
pcie aer needs SERR bit to be writable, and the PCI spec requires
this as well. For compatibility, introduce compat global property
command_serr_enable and make this bit readonly for a pre 0.14 pc
machine.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Avoid sending out packets, and modifying
memory, when VM is stopped.
Add assert statements to verify this does not happen.
Avoid scheduling bh when vhost-net is started.
Stop bh when driver disabled bus mastering
(we must not access memory after this).
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
DMA into memory while VM is stopped makes it
hard to debug migration (consequitive saves
result in different files).
Fixing this completely is a large effort,
this patch does this for virtio-net.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
There's no need to flush requests after vmstop
as vmstop does it for us automatically now.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
Flush all requests once we have stopped all
cpus and devices.
Make sure disk is in consistent state.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Add an option to specify the host IP to send multicast packets from,
when using a multicast socket for networking. The option takes an IP
address and sets the IP_MULTICAST_IF socket option, which causes the
packets to use that IP's interface as an egress.
This is useful if the host machine has several interfaces with several
virtual networks across disparate interfaces.
Signed-off-by: Mike Ryan <mikeryan@ISI.EDU>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
I get a warning on a signed comparison with an unsigned variable, so
let's make the variable signed and be happy.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
Move the last found TB to the head of the list so it will be found more quickly next time it will be looked for.
Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru>
Signed-off-by: Pavel Yushchenko <pau@ispras.ru>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Remove the spin_trylock() function, as it is not used anywhere,
and is not even implemented if CONFIG_USE_NPTL is defined.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
The redundant forward declaration of qerror in machload.c
is removed because it should be taken from qemu.h.
Please note that this patch is untested because
I have no matching environment to compile it.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This change was missing in commit
9a78eead0c.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This patch adds more printf format checking.
Additional modifications were needed for this code change:
* alpha-dis.c: The local definition of MAX conflicts with
a previous definition from osdep.h, so add an #undef.
* dis-asm.h: Add include for fprintf_function (qemu-common.h).
The standard (now redundant) includes are removed.
* mis-dis.c: The definition of ARRAY_SIZE is no longer needed
and must be removed (conflict with previous definition from
qemu-common.h).
* sh4-dis.c: Remove some unneeded forward declarations.
Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
ffsl() is not universally available, so there are these warnings
on both mingw32 and OpenBSD:
/src/qemu/hw/pcie_aer.c: In function 'pcie_aer_update_log':
/src/qemu/hw/pcie_aer.c:399: warning: implicit declaration of function 'ffsl'
Since status field in PCIEAERErr is uint32_t, we can just use ffs() instead.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* 'linux-user-for-upstream' of git://gitorious.org/qemu-maemo/qemu:
linux-user: fix mips and ppc to use UID16
update binfmt conf
linux-user: fix compiler error on nptl
ARM: linux-user: Restore iWMMXT state from ucontext on sigreturn
ARM: linux-user: Expose iWMMXT registers to signal handlers
ARM: linux-user: Restore VFP state from ucontext on sigreturn
ARM: linux-user: Expose VFP registers to signal handlers
ARM: Expose vfp_get_fpscr() and vfp_set_fpscr() to C code
ARM: linux-user: Correct size of padding in target_ucontext_v2
target-sparc: remove unused functions cpu_lock(), cpu_unlock()
ARM: enable XScale/iWMMXT in linux-user mode
linux-user: Translate getsockopt level option
linux-user: remove unnecessary local from __get_user(), __put_user()
linux-user: fix memory leaks with NPTL emulation
linux-user: mmap_reserve() not controlled by RESERVED_VA
[PATCH] target-arm: remove unused functions cpu_lock(), cpu_unlock()
Remove the debugging fprintf() slipped in via the following commit:
commit b2e0a138e7
Author: Michael S. Tsirkin <mst@redhat.com>
Date: Mon Nov 22 19:52:34 2010 +0200
migration: stable ram block ordering
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
1) dont register i386 qemu on x86_64 host
2) widen sparc and arm match
3) add sh4, based on patch by David Kozub <zub@linux.fjfi.cvut.cz>
Rest based on patch by Jan-Simon Möller <jsmoeller@linuxfoundation.org>
Restore the VFP registers from the ucontext on return from a signal
handler in linux-user mode. This means that signal handlers cannot
accidentally corrupt the interrupted code's VFP state, and allows
them to deliberately modify the state via the ucontext structure.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
For ARM linux-user mode signal handlers, fill in the ucontext with
VFP register contents in the same way that the kernel does. We only
do this for v2 format sigframe (2.6.12 and above); this is actually
bug-for-bug compatible with the older kernels, which don't save and
restore VFP registers either.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
Expose the vfp_get_fpscr() and vfp_set_fpscr() functions to C
code as well as generated code, so we can use them to read and
write the FPSCR when saving and restoring VFP registers across
signal handlers in linux-user mode.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
The padding in the target_ucontext_v2 is defined by the size of
the target's sigset_t type, not the host's. (This bug only causes
problems when we start using the uc_regspace[] array to expose
VFP registers to userspace signal handlers.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
In linux-user mode, the XScale/iWMMXT coprocessors must be enabled
at reset so that we can run code that uses these instructions.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
n setsockopt, the socket level options are translated to the hosts'
architecture before the real syscall is called, e.g.
TARGET_SO_TYPE -> SO_TYPE. This patch does the same with getsockopt.
Tested on a x86 host emulating MIPS. Without it:-
$ grep getsockopt host.strace
31311 getsockopt(3, SOL_SOCKET, 0x1007 /* SO_??? */, 0xbff17208,
0xbff17204) = -1 ENOPROTOOPT (Protocol not available)
With:-
$ grep getsockopt host.strace
25706 getsockopt(3, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
Whitespace cleanup: Riku Voipio
Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Remove an unnecessary local variable from the __get_user() and
__put_user() macros. This avoids confusing compilation failures
if the name of the local variable ('size') happens to be the
same as the variable the macro user is trying to read/write.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
Running programs that create large numbers of threads, such as this
snippet from libstdc++'s pthread7-rope.cc:
const int max_thread_count = 4;
const int max_loop_count = 10000;
...
for (int j = 0; j < max_loop_count; j++)
{
...
for (int i = 0; i < max_thread_count; i++)
pthread_create (&tid[i], NULL, thread_main, 0);
for (int i = 0; i < max_thread_count; i++)
pthread_join (tid[i], NULL);
}
in user-mode emulation will quickly run out of memory. This is caused
by a failure to free memory in do_syscall prior to thread exit:
/* TODO: Free CPU state. */
pthread_exit(NULL);
The first step in fixing this is to make all TaskStates used by QEMU
dynamically allocated. The TaskState used by the initial thread was
not, as it was allocated on main's stack. So fix that, free the
cpu_env, free the TaskState, and we're home free, right?
Not exactly. When we create a thread, we do:
ts = qemu_mallocz(sizeof(TaskState) + NEW_STACK_SIZE);
...
new_stack = ts->stack;
...
ret = pthread_attr_setstack(&attr, new_stack, NEW_STACK_SIZE);
If we blindly free the TaskState, then, we yank the current (host)
thread's stack out from underneath it while it still has things to do,
like calling pthread_exit. That causes problems, as you might expect.
The solution adopted here is to let the C library allocate the thread's
stack (so the C library can properly clean it up at pthread_exit) and
provide a hint that we want NEW_STACK_SIZE bytes of stack.
With those two changes, we're done, right? Well, almost. You see,
we're creating all these host threads and their parent threads never
bother to check that their children are finished. There's no good place
for the parent threads to do so. Therefore, we need to create the
threads in a detached state so the parent thread doesn't have to call
pthread_join on the child to release the child's resources; the child
does so automatically.
With those three major changes, we can comfortably run programs like the
above without exhausting memory. We do need to delete 'stack' from the
TaskState structure.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
mmap_reserve() should be called only when RESERVED_VA is enabled.
Otherwise, unmaped virtual address space will never be reusable. This
bug will exhaust virtual address space in extreme conditions.
Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
We still need advance address even we find there's no dirty pages in
current chunk.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
I'd like to disable bandwidth limit or make it very high,
Use int64_t all over to make values >= 4g work.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
This makes ram block ordering under migration stable, ordered by offset.
This is especially useful for migration to exec, for debugging.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Jason Wang <jasowang@redhat.com>
The usermode version of qemu_ld doesn't used mem_index,
leading to set-but-not-used warnings.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
A typo in the usermode address calculation path; R3 used where R2 needed.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
Use ld4 not ld8 for reading the tlb of 32-bit targets.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
The port was not properly merged following
86feb1c860
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
Fix compilation error when GUEST_BASE is not defined.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
The arguments to tcg_gen_helper32 for these functions were not
updated correctly in rev 2bece2c883.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Edgar E. Iglesias <edgar@axis.com>
