balrog [Mon, 1 Dec 2008 02:17:12 +0000 (02:17 +0000)]
Don't rely on ARM tcg_out_goto() generating just a single insn.
Otherwise when tb_exit generates a jump beyond the pc-relative range,
tcg_out_goto() spans two/three instructions and we load the tb return
value from a wrong address. This is #ifdefed out currently because
we take care for the jumps to be local.
Problem spotted by Steffen Liebergeld.
aurel32 [Sun, 30 Nov 2008 19:12:49 +0000 (19:12 +0000)]
qemu-img: open files with cache=writeback
Data integrity is not important in qemu-img, so open the files with
cache=writeback. This fixes the performance regression seen with qemu-img
since revision 5485, and most particularly with the qcow2 format.
aurel32 [Sun, 30 Nov 2008 16:23:09 +0000 (16:23 +0000)]
Common cpu_loop_exit prototype
All archs use the same cpu_loop_exit, so move the prototype in a common
header. i386 was carrying a __hidden attribute, but that was empty for
this arch anyway.
blueswir1 [Sat, 29 Nov 2008 16:48:29 +0000 (16:48 +0000)]
Fix configuration 2 register (esp_2_cfg2.diff):
According to http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt,
"Any bit pattern written to this register may be read back and should be identical"
blueswir1 [Sat, 29 Nov 2008 16:45:28 +0000 (16:45 +0000)]
Misc fixes (Herve Poussineau)
- Fix internal fifo size (16 bytes), according to http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt
- Fix values of STAT_MI and STAT_MO
- Give a scsi ID to adapter, and prevent this ID to be used by devices
- Prevent fifo overrun in esp_mem_writeb
- Add a ESP_ERROR macro, and use it where appropriate
aliguori [Tue, 25 Nov 2008 22:13:57 +0000 (22:13 +0000)]
Use sys-queue.h for break/watchpoint managment (Jan Kiszka)
This switches cpu_break/watchpoint_* to TAILQ wrappers, simplifying the
code and also fixing a use after release issue in
cpu_break/watchpoint_remove_all.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5799 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Tue, 25 Nov 2008 17:26:09 +0000 (17:26 +0000)]
Revert r5636 to fix icount on hosts w/o high-res clocks
Changeset r5636 changed the timers to run in the alarm callback. The
alarm callback can only be called as frequently as the host alarm timer
fires. For older Linux hosts and possibly non-Linux hosts, this can be
as high as a 1ms granularity.
icount calculates the select timeout based on the next deadline and
select is usually capable of sleeping for a short period of time than
alarm timer granularity. This means that changing the timer callbacks
to be based on alarm firing caused timers to fire much later than they
ought to when using icount.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5796 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Mon, 24 Nov 2008 20:21:41 +0000 (20:21 +0000)]
vga optimization (Glauber Costa)
Hypervisors like KVM perform badly while doing mmio on
a loop, because it'll generate an exit on each access.
This is the case with VGA, which results in very bad
performance.
In this patch, we map the linear frame buffer as RAM,
make sure it has dirty region tracking enabled, and then
just let the region to be written.
Introduce functions to control logging of memory regions.
We select regions based on its start address, a
guest_physical_addr (target_phys_addr_t, in qemu nomenclature).
The main user of this interface right now is VGA optimization
(a way of reducing the number of mmio exits).
Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5792 c046a42c-6fe2-441c-8c8c-71466251a162
aurel32 [Sat, 22 Nov 2008 10:09:27 +0000 (10:09 +0000)]
target-sh4: fix 64-bit fmov to/from memory
When loading/storing a register pair, the even-numbered register
always maps to the low 32 bits of memory independently of target
endian configuration.
aurel32 [Fri, 21 Nov 2008 21:06:51 +0000 (21:06 +0000)]
SH4: Switch serial emulation to qemu_irq
This patches makes SH serial emulation use qemu_irq in its interface.
* hw/sh.h (sh_serial_init): Take qemu_irq, not intc_source.
* hw/sh7750.c (sh7750_init): Adjust.
* hw/sh_intc.c (sh_intc_set_irq): Don't assert or deassert
irq more than once.
* hw/sh_serial.c (sh_serial_state): Use qemu_irq, not intc_source.
(sh_serial_clear_fifo, sh_serial_ioport_write)
(sh_serial_receive_byte): Adjust.
(sh_serial_init): Take qemu_irq, not intc_source.
edgar_igl [Fri, 21 Nov 2008 17:26:23 +0000 (17:26 +0000)]
CRIS: remove unused op_template.h.
Remove unused file, reported by Laurent Desnogues.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5767 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Fri, 21 Nov 2008 16:25:17 +0000 (16:25 +0000)]
e1000 VLAN offload emulation (Alex Williamson)
We're currently ignoring the e1000 VLAN tagging, stripping and filtering
features in the e1000 emulation. This patch adds backing for the
relevant registers and provides a software implementation of the
acceleration, such that a guest can make use of VLANs.
This is mostly (only?) useful for a guest on a bridge (not user mode
networking). The only caveat beyond that is that you need to make sure
the host NIC isn't doing it's own tagging, stripping, or filtering.
This generally means the host NIC on the bridge should not be part of a
VLAN.
Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5766 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Thu, 20 Nov 2008 22:11:52 +0000 (22:11 +0000)]
uImage: return base load address (Hollis Blanchard)
Return the base address at which the image was loaded so that callers may keep
track of currently occupied guest memory.
This will be required by the PPC 440 embedded code to avoid hard coding a
device model/initrd location. Other users of this function could make use of
this parameter to avoid hard coding these locations in the future too.
aliguori [Wed, 19 Nov 2008 17:41:58 +0000 (17:41 +0000)]
Make KVMSlot a real structure
struct kvm_userspace_memory_region does not use QEMU friendly types to
define memory slots. This results in lots of ugly casting with warnings
on 32-bit platforms.
This patch introduces a proper KVMSlot structure that uses QEMU types to
describe memory slots. This eliminates many of the casts and isolates
the type conversions to one spot.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5755 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Wed, 19 Nov 2008 15:03:36 +0000 (15:03 +0000)]
Fix media detection on emulated CDROM (Gary Grebus)
This patch tweaks the ATAPI CDROM emulation to fix an annoyance seen
when running a variety of Linux guests: the desktop GUI shows a CDROM
device as present, but is unable to automount the media and display its
contents.
The patch adds the PLAY_AUDIO capability bit to the data returned by
MODE_SENSE commands. That convinces the guest kernel to determine what
kind of media is present.
Arguably Linux could be smarter about this, but it's my guess there are
few (if any) hardware CDROM drives that don't set the bit, and there are
a large number of Linux distros that exhibit this problem.
Signed-off-by: Gary Grebus <ggrebus@virtualiron.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5752 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Tue, 18 Nov 2008 21:08:15 +0000 (21:08 +0000)]
x86: Debug register emulation (Jan Kiszka)
Built on top of previously enhanced breakpoint/watchpoint support, this
patch adds full debug register emulation for the x86 architecture.
Many corner cases were considered, and the result was successfully
tested inside a Linux guest with gdb, but I won't be surprised if one
or two scenarios still behave differently in reality.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5747 c046a42c-6fe2-441c-8c8c-71466251a162
aliguori [Tue, 18 Nov 2008 20:56:59 +0000 (20:56 +0000)]
Introduce BP_CPU as a breakpoint type (Jan Kiszka)
Add another breakpoint/watchpoint type to BP_GDB: BP_CPU. This type is
intended for hardware-assisted break/watchpoint emulations like the x86
architecture requires.
To keep the highest priority for BP_GDB breakpoints, this type is
always inserted at the head of break/watchpoint lists, thus is found
first when looking up the origin of a debug interruption.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5746 c046a42c-6fe2-441c-8c8c-71466251a162
projects / qemu-xen-3.4-testing.git / log