Previously we'd only handle 16-bit offsets from memory operand without falling
back to indexed, but it's easy to use ADDIS to handle full 32-bit offsets.
This also lets us unify code that existed inline in tcg_out_op for handling
addition of large constants.
The new R2 temporary was marked reserved for the AIX calling convention, but
the register really is call-clobbered and since tcg generated code has no use
for a TOC, it's available for use.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Remove conditionalization from tcg_target_reg_alloc_order, relying on
reserved_regs to prevent register allocation that shouldn't happen.
So R11 is now present in reg_alloc_order for __APPLE__, but also now
reserved.
Sort reg_alloc_order into call-saved, call-clobbered, and parameters.
This reduces the effect of values getting spilled and reloaded before
function calls.
Whether or not it is reserved, R2 (TOC) is always call-clobbered.
Signed-off-by: Richard Henderson <rth@twiddle.net>
While these are rare from code that's been through the optimizer,
it's not uncommon within the tcg backend.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Instead of bare N, for clarity. The only (intentional) exception made
is for insns that encode R|0, i.e. when R0 encoded into the insn is
interpreted as zero not the contents of the register.
Signed-off-by: Richard Henderson <rth@twiddle.net>
The fix is that sparc has so many mmu modes that the last one overflowed
the 16-bit signed offset we assumed would fit. Handle this, and check
the new assumption at compile time.
Load the tlb addend earlier for the fast path.
Remove the explicit address + addend and make use of index addressing.
Adjust constraints for qemu_ld64 such that we don't clobber the address
register or tlb addend before loading both values.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Coding style fixes. Use TCGReg enumeration values instead of raw
numbers. Don't needlessly pull the whole TCGLabelQemuLdst struct
into local variables. Less conditional compilation.
No functional changes.
Signed-off-by: Richard Henderson <rth@twiddle.net>
While these are rare from code that's been through the optimizer,
it's not uncommon within the tcg backend.
Signed-off-by: Richard Henderson <rth@twiddle.net>
These use a 32-bit load-of-immediate to save a mflr+addi+mtlr sequence.
Tested with a Windows 98 guest (pretty much the most recent thing I
could run on my PPC machine) and kvm-unit-tests's sieve.flat. The
speed up for sieve.flat is as high as 10% for qemu-system-i386, 25%
(no kidding) for qemu-system-x86_64 on my PowerBook G4.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
For the AIX ABI, the function pointer and small area pointer need
to be loaded in the trampoline. The trampoline instead is called
with a normal BL instruction.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
# By Aurelien Jarno (1) and Vincenzo Maffione (1)
# Via Stefan Hajnoczi
* stefanha/net:
e1000: NetClientInfo.receive_iov implemented
pcnet-pci: mark I/O and MMIO as LITTLE_ENDIAN
Message-id: 1379699613-5338-1-git-send-email-stefanha@redhat.com
# By Stefan Hajnoczi (4) and others
# Via Stefan Hajnoczi
* stefanha/block:
virtio-blk: do not relay a previous driver's WCE configuration to the current
blockdev: do not default cache.no-flush to true
block: don't lose data from last incomplete sector
qcow2: Correct snapshots size for overlap check
coroutine: fix /perf/nesting coroutine benchmark
coroutine: add qemu_coroutine_yield benchmark
qemu-timer: do not take the lock in timer_pending
qemu-timer: make qemu_timer_mod_ns() and qemu_timer_del() thread-safe
qemu-timer: drop outdated signal safety comments
osdep: warn if open(O_DIRECT) on fails with EINVAL
libcacard: link against qemu-error.o for error_report()
Message-id: 1379698931-946-1-git-send-email-stefanha@redhat.com
# By Stefan Weil (8) and others
# Via Michael Tokarev
* mjt/trivial-patches:
tests/.gitignore: ignore test-throttle
exec: Fix broken build for MinGW (regression)
kvm: Fix compiler warning (clang)
tcg-sparc: Fix parenthesis warning
Makefile: Remove some more files when cleaning
target-i386: Fix segment cache dump
iov: avoid "orig_len may be used unitialized" warning
vscclient: remove unnecessary use of uninitialized variable
trace-events: Clean up with scripts/cleanup-trace-events.pl again
tci: Fix qemu-alpha on 32 bit hosts (wrong assertions)
*-user: Improve documentation for lock_user function
MAINTAINERS: Add missing entry to filelist for TCI target
translate-all: Fix formatting of dump output
*-user: Fix typo in comment (ulocking -> unlocking)
docs: Fix IO port number for CPU present bitmap.
q35: Fix typo in constant DEFUALT -> DEFAULT.
configure: Undefine _FORTIFY_SOURCE prior using it
Message-id: 1379696296-32105-1-git-send-email-mjt@msgid.tls.msk.ru
# By Alexey Kardashevskiy (3) and others
# Via Paolo Bonzini
* qemu-kvm/uq/master:
target-i386: add feature kvm_pv_unhalt
linux-headers: update to 3.12-rc1
target-i386: forward CPUID cache leaves when -cpu host is used
linux-headers: update to 3.11
kvm: fix traces to use %x instead of %d
kvmvapic: Clear also physical ROM address when entering INACTIVE state
kvmvapic: Enter inactive state on hardware reset
kvmvapic: Catch invalid ROM size
kvm irqfd: support direct msimessage to irq translation
fix steal time MSR vmsd callback to proper opaque type
kvm: warn if num cpus is greater than num recommended
cpu: Move cpu state syncs up into cpu_dump_state()
exec: always use MADV_DONTFORK
Message-id: 1379694292-1601-1-git-send-email-pbonzini@redhat.com
# By Hervé Poussineau (5) and Stefan Weil (1)
# Via Paolo Bonzini
* bonzini/scsi-next:
block/iscsi: Drop iscsi_co_get_block_status for older versions of libiscsi
lsi: add 53C810 variant
lsi: remove todo
lsi: ignore write accesses to CTEST0 registers
lsi: check ssid versus sdid only if ssid is valid
lsi: use constant name instead of its value
KVM request types are normally defined using hex constants but QEMU traces
print decimal values instead, which is not very convenient.
This changes the request type format from %d to %x.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This patch implements the NetClientInfo.receive_iov method for the
e1000 device emulation. In this way a network backend that uses
qemu_sendv_packet() can deliver the fragmented packet without
requiring an additional copy in the frontend/backend network code
(nc_sendv_compat() function).
The existing method NetClientInfo.receive has been reimplemented
using the new method.
Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Now that the memory subsystem is propagating the endianness correctly,
the pcnet-pci device should have its I/O ports and MMIO memory marked
as LITTLE_ENDIAN, as PCI devices are little endian.
This makes the pcnet-pci NIC to work again on big endian MIPS Malta
(default NIC).
Cc: qemu-stable@nongnu.org
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The following sequence happens:
- the SeaBIOS virtio-blk driver does not support the WCE feature, which
causes QEMU to disable writeback caching
- the Linux virtio-blk driver resets the device, finds WCE is available
but writeback caching is disabled; tells block layer to not send cache
flush commands
- the Linux virtio-blk driver sets the DRIVER_OK bit, which causes
writeback caching to be re-enabled, but the Linux virtio-blk driver does
not know of this side effect and cache flushes remain disabled
The bug is at the third step. If the guest does know about CONFIG_WCE,
QEMU should ignore the WCE feature's state. The guest will control the
cache mode solely using configuration space. This change makes Linux
do flushes correctly, but Linux will keep SeaBIOS's writethrough mode.
Hence, whenever the guest is reset, the cache mode of the disk should
be reset to whatever was specified in the "-drive" option. With this
change, the Linux virtio-blk driver finds that writeback caching is
enabled, and tells the block layer to send cache flush commands
appropriately.
Reported-by: Rusty Russell <rusty@au1.ibm.com
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
That's why all my VMs were so fast lately. :)
This changed in 1.6.0 by mistake in patch 29c4e2b (blockdev: Split up
'cache' option, 2013-07-18).
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
To read the last sector that is not aligned to sector boundary, current
code for growable backends, since commit 893a8f6 "block: Produce zeros
when protocols reading beyond end of file", drops the data and directly
returns zeroes. That is incorrect.
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Commit 3435f39513 reduced the ifdeffery with
this result for MinGW:
exec.c: In function ‘qemu_ram_free’:
exec.c:1239:17: warning:
implicit declaration of function ‘munmap’ [-Wimplicit-function-declaration]
exec.c:1239:17: warning:
nested extern declaration of ‘munmap’ [-Wnested-externs]
exec.c:1239: undefined reference to `munmap'
Add some ifdeffery again to fix this.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Report from clang analyzer:
clock.c:42:15: warning:
Value stored to 'cpu' during its initialization is never read
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
error: suggest parentheses around comparison in operand of ‘&’ [-Werror=parentheses]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
When in Long Mode, cpu_x86_seg_cache() logs "DS16" because the Default
operation size bit (D/B bit) is not set for Long Mode Data Segments since
there are only Data Segments in Long Mode and no explicit 16/32/64-bit
Descriptors.
This patch fixes this by checking the Long Mode Active bit of the hidden
flags variable and logging "DS" if it is set. (I.e. in Long Mode all Data
Segments are logged as "DS")
Signed-off-by: Tobias Markus <tobias@markus-regensburg.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Event qxl_render_blit_guest_primary_initialized is unused since commit
c58c7b9, drop it.
Commit 42e5b4c moved hw/ppc/xics.c to hw/intc/xics.c without updating
the comment in trace-events.
"scripts/cleanup-trace-events.pl trace-events | diff trace-events" is
now clean again.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Debian busybox-static for alpha has a load address of 0x0000000120000000
which is mapped to 0x0000000020000000 for 32 bit hosts.
qemu-alpha uses the TCG opcodes qemu_ld32, qemu_ld64, qemu_st32 and
qemu_st64 which all raise the assertion (taddr == host_addr).
Remove all assertions of this type because they are either wrong or
unnecessary (when sizeof(tcg_target_ulong) >= sizeof(target_ulong)).
Cc: qemu-stable <qemu-stable@nongnu.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Add a missing "function" and replace "and" by "any".
BSD and Linux use the same documentation here, so fix both.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
tci.c is also a maintained part of the TCI implementation.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The page dump writes a table with 3 abi_ulong values in each row.
These values take 8 or 16 characters (depending on sizeof abi_ulong).
Fix the table headings to be aligned with the table columns.
old:
start end size prot
0000000120000000-000000012021e000 000000000021e000 rwx
0000004000000000-0000004000002000 0000000000002000 ---
0000004000002000-0000004000802000 0000000000800000 rw-
new:
start end size prot
0000000120000000-000000012021e000 000000000021e000 rwx
0000004000000000-0000004000002000 0000000000002000 ---
0000004000002000-0000004000802000 0000000000800000 rw-
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewd-By: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Currently, we are enforcing the _FORTIFY_SOURCE=2 without any
previous detection if the macro has been already defined, e.g.
by environment, or is just enabled by compiler by default.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Jan Vesely <jano.vesely@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
# By Hans de Goede (6) and Gerd Hoffmann (1)
# Via Gerd Hoffmann
* kraxel/usb.90:
usb: Fix iovec memleak on combined-packet free
usb: Also reset max_packet_size on ep_reset
xhci: Fix memory leak on xhci_disable_ep
xhci: Add xhci_epid_to_usbep helper function
xhci: Init a transfers xhci, slotid and epid member on epctx alloc
xhci: Fix number of streams allocated when using streams
usb: remove old usb-host code
Message-id: 1379583298-7524-1-git-send-email-kraxel@redhat.com
Using s->snapshots_size instead of snapshots_size for the metadata
overlap check in qcow2_write_snapshots leads to the detection of an
overlap with the main qcow2 image header when deleting the last
snapshot, since s->snapshots_size has not yet been updated and is
therefore non-zero. However, the offset returned by qcow2_alloc_clusters
will be zero since snapshots_size is zero. Therefore, an overlap is
detected albeit no such will occur.
This patch fixes this by replacing s->snapshots_size by snapshots_size
when calling qcow2_pre_write_overlap_check.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
