Rather than allow arbitrary shift+trunc, only concern ourselves
with low and high parts. This is all that was being used anyway.
Signed-off-by: Richard Henderson <rth@twiddle.net>
They behave the same as ext32s_i64 and ext32u_i64 from the constant
folding and zero propagation point of view, except that they can't
be replaced by a mov, so we don't compute the affected value.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Implement real ext_i32_i64 and extu_i32_i64 ops. They ensure that a
32-bit value is always converted to a 64-bit value and not propagated
through the register allocator or the optimizer.
Cc: Andrzej Zaborowski <balrogg@gmail.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Stefan Weil <sw@weilnetz.de>
Acked-by: Claudio Fontana <claudio.fontana@huawei.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The tcg_gen_trunc_shr_i64_i32 function takes a 64-bit argument and
returns a 32-bit value. Directly call tcg_gen_op3 with the correct
types instead of calling tcg_gen_op3i_i32 and abusing the TCG types.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The op is sometimes named trunc_shr_i32 and sometimes trunc_shr_i64_i32,
and the name in the README doesn't match the name offered to the
frontends.
Always use the long name to make it clear it is a size changing op.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Instead of using an enum which could be either a copy or a const, track
them separately. This will be used in the next patch.
Constants are tracked through a bool. Copies are tracked by initializing
temp's next_copy and prev_copy to itself, allowing to simplify the code
a bit.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Add two accessor functions temp_is_const and temp_is_copy, to make the
code more readable and make code change easier.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The tcg_temp_info structure uses 24 bytes per temp. Now that we emulate
vector registers on most guests, it's not uncommon to have more than 100
used temps. This means we have initialize more than 2kB at least twice
per TB, often more when there is a few goto_tb.
Instead used a TCGTempSet bit array to track which temps are in used in
the current basic block. This means there are only around 16 bytes to
initialize.
This improves the boot time of a MIPS guest on an x86-64 host by around
7% and moves out tcg_optimize from the the top of the profiler list.
[rth: Handle TCG_CALL_DUMMY_ARG]
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
By convention, on a 64-bit host TCG internally stores 32-bit constants
as sign-extended. This is not the case in the optimizer when a 32-bit
constant is folded.
This doesn't seem to have more consequences than suboptimal code
generation. For instance the x86 backend assumes sign-extended constants,
and in some rare cases uses a 32-bit unsigned immediate 0xffffffff
instead of a 8-bit signed immediate 0xff for the constant -1. This is
with a ppc guest:
before
------
---- 0x9f29cc
movi_i32 tmp1,$0xffffffff
movi_i32 tmp2,$0x0
add2_i32 tmp0,CA,CA,tmp2,r6,tmp2
add2_i32 tmp0,CA,tmp0,CA,tmp1,tmp2
mov_i32 r10,tmp0
0x7fd8c7dfe90c: xor %ebp,%ebp
0x7fd8c7dfe90e: mov %ebp,%r11d
0x7fd8c7dfe911: mov 0x18(%r14),%r9d
0x7fd8c7dfe915: add %r9d,%r10d
0x7fd8c7dfe918: adc %ebp,%r11d
0x7fd8c7dfe91b: add $0xffffffff,%r10d
0x7fd8c7dfe922: adc %ebp,%r11d
0x7fd8c7dfe925: mov %r11d,0x134(%r14)
0x7fd8c7dfe92c: mov %r10d,0x28(%r14)
after
-----
---- 0x9f29cc
movi_i32 tmp1,$0xffffffffffffffff
movi_i32 tmp2,$0x0
add2_i32 tmp0,CA,CA,tmp2,r6,tmp2
add2_i32 tmp0,CA,tmp0,CA,tmp1,tmp2
mov_i32 r10,tmp0
0x7f37010d490c: xor %ebp,%ebp
0x7f37010d490e: mov %ebp,%r11d
0x7f37010d4911: mov 0x18(%r14),%r9d
0x7f37010d4915: add %r9d,%r10d
0x7f37010d4918: adc %ebp,%r11d
0x7f37010d491b: add $0xffffffffffffffff,%r10d
0x7f37010d491f: adc %ebp,%r11d
0x7f37010d4922: mov %r11d,0x134(%r14)
0x7f37010d4929: mov %r10d,0x28(%r14)
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Message-Id: <1436544211-2769-2-git-send-email-aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
The cocoa GUI frontend assumes it is the only GUI (it redefines
main() so it always gets control before the rest of QEMU), so
it does not play well with other UIs like SDL or GTK. (Mostly
people building QEMU on OSX don't have the necessary dependencies
available for configure to build those other front ends, so
mostly this problem goes unnoticed.)
Make configure automatically disable the SDL and GTK front ends
if the cocoa front end is enabled. (We were sort of attempting
to do this for SDL before, but not in a way that worked very well.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: John Arbuckle <programmingkidx@gmail.com>
Message-id: 1439565052-3457-1-git-send-email-peter.maydell@linaro.org
apic_internal.h relies on cpu.h having been included (for the
X86CPU type); include it directly rather than relying on it
being pulled in via one of the other includes like timer.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Move the muldiv64() function from qemu-common.h to host-utils.h.
This puts it together with all the other arithmetic functions
where we provide a version with __int128_t and a fallback
without, and allows headers which need muldiv64() to avoid
including qemu-common.h.
We don't include host-utils from qemu-common.h, to avoid dragging
more things into qemu-common.h than it already has; in practice
everywhere that needs muldiv64() can get it via qemu/timer.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Add a header comment to osdep.h, explaining what the header is for
and some rules to avoid circular-include difficulties.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu-common.h has some system header includes and fixups for
things that might be missing. This is really an OS dependency
and belongs in osdep.h, so move it across.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu-common.h includes some fixups for things the Win32
headers don't define or define weirdly. These really
belong in os-win32.h, so move them there.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Rather than rolling custom concatenate-strings macros for the
QEMU_BUILD_BUG_ON macro to use, use the glue() macro we already
have (since it's now available to us in this header).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
osdep.h has a few things which are really compiler specific;
move them to compiler.h, and include compiler.h from osdep.h.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qemu_printf is an ancient remnant which has been a simple #define to
printf for over a decade, and is used in only a few places. Expand
it out in those places and remove the #define.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
qmp-event.c already includes qemu-common.h, so manually including
os-win32.h/os-posix.h is unnecessary (and potentially fragile,
since it's duplicating the #ifdef logic that chooses which of the
two we need). Remove the unnecessary include logic.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
This avoids having to manually swap them around when swapping to and
from PALmode. We simply encode the shadow registers into the translation.
The VMStateDescription version changes, because the meaning of "shadow"
changes in the save file when in PALmode. It would be possible to fix
this, but I don't think it's worth the effort.
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
* vhost-scsi fix from Igor and Lu Lina
* a build system fix from Daniel
* two more multi-arch-related patches from Peter C.
* TCG patches from myself and Sergey Fedorov
* RCU improvement from Wen Congyang
* a few more simple cleanups
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* SCSI fixes from Stefan and Fam
* vhost-scsi fix from Igor and Lu Lina
* a build system fix from Daniel
* two more multi-arch-related patches from Peter C.
* TCG patches from myself and Sergey Fedorov
* RCU improvement from Wen Congyang
* a few more simple cleanups
# gpg: Signature made Fri 14 Aug 2015 22:41:52 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini/tags/for-upstream:
disas: Defeature print_target_address
hw: fix mask for ColdFire UART command register
scsi-generic: identify AIO callbacks more clearly
scsi-disk: identify AIO callbacks more clearly
scsi: create restart bottom half in the right AioContext
configure: only add CONFIG_RDMA to config-host.h once
qemu-nbd: remove unnecessary qemu_notify_event()
vhost-scsi: Clarify vhost_virtqueue_mask argument
exec: use macro ROUND_UP for alignment
rcu: Allow calling rcu_(un)register_thread() during synchronize_rcu()
exec: drop cpu_can_do_io, just read cpu->can_do_io
cpu_defs: Simplify CPUTLB padding logic
cpu-exec: Do not invalidate original TB in cpu_exec_nocache()
vhost/scsi: call vhost_dev_cleanup() at unrealize() time
virtio-scsi-test: Add test case for tail unaligned WRITE SAME
scsi-disk: Fix assertion failure on WRITE SAME
tests: virtio-scsi: clear unit attention after reset
scsi-disk: fix cmd.mode field typo
virtio-scsi: use virtqueue_map_sg() when loading requests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
It does not work in multi-arch as it requires the CPU specific
TARGET_VIRT_ADDR_SPACE_BITS global define. Just use the generic
version that does no masking. Targets should be responsible for
passing in a sane virtual address.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <1436129432-16617-1-git-send-email-crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Functions that are not callbacks should assert that aiocb is NULL and
have a SCSIGenericReq argument.
AIO callbacks should assert that aiocb is not NULL. They also have an
opaque argument.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Functions that are not callbacks should assert that aiocb is NULL and
have a non-opaque argument (usually a pointer to SCSIDiskReq).
AIO callbacks should assert that aiocb is not NULL and take care of
calling block_acct done. They also have an opaque argument.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This matches commit 4407c1c (virtio-blk: Schedule BH in the right context,
2014-06-17), which did the same thing for virtio-blk.
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
For unknown reasons (probably a git rebase merge mistake)
commit 2da776db48
Author: Michael R. Hines <mrhines@us.ibm.com>
Date: Mon Jul 22 10:01:54 2013 -0400
rdma: core logic
Adds CONFIG_RDMA to config-host.h twice, as can be seen
in the generated file:
$ grep CONFIG_RDMA config-host.h
#define CONFIG_RDMA 1
#define CONFIG_RDMA 1
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1438345403-32467-1-git-send-email-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This was needed when qemu-nbd was using qemu_set_fd_handler2. It is
not needed anymore now that nbd_update_server_fd_handler is called
whenever nbd_can_accept() can change from false to true.
nbd_update_server_fd_handler will call qemu_set_fd_handler(),
which will call qemu_notify_event().
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
vhost_virtqueue_mask takes an "absolute" virtqueue index, while the
code looks like it's passing an index that is relative to
s->dev.vq_index. In reality, s->dev.vq_index is always zero, so
this patch does not make any difference, but the code is clearer.
Signed-off-by: Lu Lina <lina.lulina@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <1437978359-17960-1-git-send-email-arei.gonglei@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If rcu_(un)register_thread() is called together with synchronize_rcu(),
it will wait for the synchronize_rcu() to finish. But when synchronize_rcu()
waits for some events, we can modify the list registry.
We also use the lock rcu_gp_lock to assume that synchronize_rcu() isn't
executed in more than one thread at the same time. Add a new mutex lock
rcu_sync_lock to assume it and rename rcu_gp_lock to rcu_registry_lock.
Release rcu_registry_lock when synchronize_rcu() waits for some events.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Message-Id: <55B59652.4090503@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
After commit 626cf8f (icount: set can_do_io outside TB execution,
2014-12-08), can_do_io is set to 1 if not executing code. It is
no longer necessary to make this assumption in cpu_can_do_io.
It is also possible to remove the use_icount test, simply by
never setting cpu->can_do_io to 0 unless use_icount is true.
With these changes cpu_can_do_io boils down to a read of
cpu->can_do_io.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This fixes a regression introduced by commit dcfb3beb ("mirror: Do zero
write on target if sectors not allocated"), which was reported to cause
aborts with the message "Co-routine re-entered recursively".
The cause for this bug is the following code in mirror_iteration_done():
if (s->common.busy) {
qemu_coroutine_enter(s->common.co, NULL);
}
This has always been ugly because - unlike most places that reenter - it
doesn't have a specific yield that it pairs with, but is more
uncontrolled. What we really mean here is "reenter the coroutine if
it's in one of the four explicit yields in mirror.c".
This used to be equivalent with s->common.busy because neither
mirror_run() nor mirror_iteration() call any function that could yield.
However since commit dcfb3beb this doesn't hold true any more:
bdrv_get_block_status_above() can yield.
So what happens is that bdrv_get_block_status_above() wants to take a
lock that is already held, so it adds itself to the queue of waiting
coroutines and yields. Instead of being woken up by the unlock function,
however, it gets woken up by mirror_iteration_done(), which is obviously
wrong.
In most cases the code actually happens to cope fairly well with such
cases, but in this specific case, the unlock must already have scheduled
the coroutine for wakeup when mirror_iteration_done() reentered it. And
then the coroutine happened to process the scheduled restarts and tried
to reenter itself recursively.
This patch fixes the problem by pairing the reenter in
mirror_iteration_done() with specific yields instead of abusing
s->common.busy.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1439455310-11263-1-git-send-email-kwolf@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
Changes:
* mips32r5-generic CPU updated and renamed to P5600
* improvements in LWL/LDL, logging and fulong2e
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Merge remote-tracking branch 'remotes/lalrae/tags/mips-20150813' into staging
MIPS patches 2015-08-13
Changes:
* mips32r5-generic CPU updated and renamed to P5600
* improvements in LWL/LDL, logging and fulong2e
# gpg: Signature made Thu 13 Aug 2015 17:10:59 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8DD3 2F98 5495 9D66 35D4 4FC0 5211 8E3C 0B29 DA6B
* remotes/lalrae/tags/mips-20150813:
target-mips: Use CPU_LOG_INT for logging related to interrupts
hw/pci-host/bonito: Avoid buffer overrun for bad LDMA/COP accesses
target-mips: simplify LWL/LDL mask generation
target-mips: update mips32r5-generic into P5600
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There are now no unconditional uses of qemu_log in the subdirectory.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
The LDMA and COP memory regions represent four 32 bit registers
each, but the memory regions themselves are 0x100 bytes large.
Add guards to the read and write accessors so that bogus accesses
beyond the four defined registers don't just run off the end of
the bonldma and boncop structs and into whatever lies beyond.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
The LWL/LDL instructions mask the GPR with a mask depending on the
address alignement. It is currently computed by doing:
mask = 0x7fffffffffffffffull >> (t1 ^ 63)
It's simpler to generate it by doing:
mask = ~(-1 << t1)
It uses one TCG instruction less, and it avoids a 32/64-bit constant
loading which can take a few instructions on RISC hosts.
Cc: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
As full specification of P5600 is available, mips32r5-generic should
be renamed to P5600 and corrected as its intention.
Correct PRid and detail of configuration.
Features which are not currently supported are described as FIXME.
Fix Config.MM bit location
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com: correct cache line sizes and LLAddr shift]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Mostly cleanups, notably Eduardo's compat code rework,
and smbios rearrangement for use by ARM.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
virtio,pc,acpi fixes, cleanups
Mostly cleanups, notably Eduardo's compat code rework,
and smbios rearrangement for use by ARM.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Thu 13 Aug 2015 12:59:16 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>"
* remotes/mst/tags/for_upstream: (24 commits)
MAINTAINERS: list smbios maintainers
smbios: move smbios code into a common folder
smbios: remove dependency on x86 e820 tables
smbios: extract x86 smbios building code into a function
acpi: avoid potential uninitialized access to cpu_hp_io_base
virtio-net: remove useless codes
pci: allow 0 address for PCI IO/MEM regions
pc: Remove redundant arguments from pc_memory_init()
pc: Remove redundant arguments from pc_cmos_init()
pc: Remove redundant arguments from *load_linux()
pc: Use PCMachineState as pc_guest_info_init() argument
pc: Move {above,below}_4g_mem_size variables to PCMachineState
pc: Use PCMachineState for pc_memory_init() argument
pc: Use PCMachineState for pc_cmos_init() argument
pc: Eliminate pc_default_machine_options()
pc: Eliminate pc_common_machine_options()
pc: Move PCMachineClass, PCMachineState to qemu/typedefs.h
pc: Rename pc_machine variables to pcms
pc: Use error_abort when registering properties
target-i386: Remove x86_cpu_compat_set_features()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
