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.
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.
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).
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.
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.
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.
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.
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.
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.
aliguori [Tue, 18 Nov 2008 20:37:55 +0000 (20:37 +0000)]
Introduce BP_WATCHPOINT_HIT flag (Jan Kiszka)
When one watchpoint is hit, others might have triggered as well. To
support users of the watchpoint API which need to detect such cases,
the BP_WATCHPOINT_HIT flag is introduced and maintained.
aliguori [Tue, 18 Nov 2008 20:30:24 +0000 (20:30 +0000)]
gdbstub: manage CPUs as threads (Jan Kiszka)
This patch enhances QEMU's built-in debugger for SMP guest debugging.
Using the thread support of the gdb remote protocol, each VCPU is mapped
on a pseudo thread and exposed to the gdb frontend. This way you can
easy switch the focus of gdb between the VCPUs and observe their states.
On breakpoint hit, the focus is automatically adjusted just as for
normal multi-threaded application under gdb control.
Furthermore, the patch propagates breakpoint and watchpoint insertions
or removals to all CPUs, not just the current one as it was the case so
far. Without this, SMP guest debugging was practically unfeasible.
Now that we can properly restore the pc on watchpoint hits, there is no
more need for prematurely terminating TBs if watchpoints are present.
Remove all related bits.
aliguori [Tue, 18 Nov 2008 20:24:06 +0000 (20:24 +0000)]
Restore pc on watchpoint hits (Jan Kiszka)
In order to provide accurate information about the triggering
instruction, this patch adds the required bits to restore the pc if the
access happened inside a TB. With the BP_STOP_BEFORE_ACCESS flag, the
watchpoint user can control if the debug trap should be issued on or
after the accessing instruction.
aliguori [Tue, 18 Nov 2008 20:07:32 +0000 (20:07 +0000)]
Refactor and enhance break/watchpoint API (Jan Kiszka)
This patch prepares the QEMU cpu_watchpoint/breakpoint API to allow the
succeeding enhancements this series comes with.
First of all, it overcomes MAX_BREAKPOINTS/MAX_WATCHPOINTS by switching
to dynamically allocated data structures that are kept in linked lists.
This also allows to return a stable reference to the related objects,
required for later introduced x86 debug register support.
Breakpoints and watchpoints are stored with their full information set
and an additional flag field that makes them easily extensible for use
beyond pure guest debugging.
aliguori [Tue, 18 Nov 2008 19:46:41 +0000 (19:46 +0000)]
Refactor translation block CPU state handling (Jan Kiszka)
This patch refactors the way the CPU state is handled that is associated
with a TB. The basic motivation is to move more arch specific code out
of generic files. Specifically the long #ifdef clutter in tb_find_fast()
has to be overcome in order to avoid duplicating it for the gdb
watchpoint fixes (patch "Restore pc on watchpoint hits").
aliguori [Tue, 18 Nov 2008 15:41:18 +0000 (15:41 +0000)]
Make KVM slot management more robust
KVM keeps track of physical memory based on slots in the kernel. The current
code that translates QEMU memory mappings to slots work but is not robust
in the fact of reregistering partial regions of memory.
This patch does the right thing for reregistering partial regions of memory. It
also prevents QEMU from using KVM private slots.
aurel32 [Fri, 14 Nov 2008 17:20:15 +0000 (17:20 +0000)]
target-alpha: implement getxuid and getxgid syscalls
This patch implemented the setxuid and setxgid syscalls for Alpha.
These syscalls return two values, both uid/euid and gid/egid.
In addition to returning the first value in $v0, the additional
value is returned in the $a4 register.
The syscalls are used instead of the separate syscalls for those values
used on other architectures (this is probably because Alpha Linux started
out syscall compatible with DEC/OSF/Tru64).
With this patch, the perlbmk benchmarks from Spec2000 run properly.
projects / qemu.git / log