According to PPC440 user manual, PPC 440 supports ``mftb'' even it's a
preserved instruction:
PPC440_UM2013.pdf, p.445, table A-3
when I compile a kernel (2.6.30, bamboo_defconfig/440EP &
canyonlands/460EX), I can see ``mftb'' by using ppc-xxx-objdump
vmlinux
I have also checked the ppc 440x[456], 460S, 464, they also should support mftb.
The following patch enable mftb for all ppc 440 variants, including:
440EP, 440GP, 440x4, 440x5 and 460
Signed-off-by: Baojun Wang <wangbj@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The powerpc xml files contained a hack--an empty, non-existent
register--for getting the register numbers to line up for
newer (XML-aware) and older (non-XML-aware) GDB. While this hack worked
in some cases, it didn't work in all cases, notably when the user used
`finish' or `continue': GDB would attempt to read the non-existent
register and QEMU would complain.
This patch fixes things up properly. Instead of inserting a fake
register, we explicitly declare the floating-point and SPE registers to
start at 71. This action accomplishes the same thing as the nasty hack,
except that now GDB never tries to fetch the non-existant register 70.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
For 32-bit PPC targets, we translated:
evmergelo rX, rX, rY
as:
rX-lo = rY-lo
rX-hi = rX-lo
which is wrong, because we should be transferring rX-lo first. This
problem is fixed by swapping the order in which we write the parts of
rX.
Similarly, we translated:
evmergelohi rX, rX, rY
as:
rX-lo = rY-hi
rX-hi = rX-lo
In this case, we can't swap the assignment statements, because that
would just cause problems for:
evmergelohi rX, rY, rX
Instead, we detect the first case and save rX-lo in a temporary
variable:
tmp = rX-lo
rX-lo = rY-hi
rX-hi = tmp
These problems don't occur on PPC64 targets because we don't split the
SPE registers into hi/lo parts for such targets.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Use parameter 'next' to fix the hdecr case.
Also pass 'next' by value instead of pointer (more easy to read and no
performance issue for an always_inline function).
Signed-off-by: Tristan Gingold <gingold@adacore.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Fix botched merge of op_ldst_sc calls to match actual implementation.
Thanks to Aurelien Jarno for diagnosing this.
Signed-off-by: Paul Brook <paul@codesourcery.com>
On Sun, Jul 12, 2009 at 12:09 PM, Blue Swirl<blauwirbel@gmail.com> wrote:
> On 7/12/09, Igor Kovalenko <igor.v.kovalenko@gmail.com> wrote:
>> Good trap handling is required to process interrupts.
>> This patch fixes the following:
>>
>> - sparc64 has no wim register
>> - sparc64 has no psret register, use IE bit of pstate
>> extract IE checking code to cpu_interrupts_enabled
>> - alternate globals are not available if cpu has GL feature
>> in this case bit AG of pstate is constant zero
>> - write to pstate must actually write pstate
>> even if cpu has GL feature
>>
>> Also timer interrupt is handled using do_interrupt.
>
> A bit too much for one patch. Please also remove the code instead of
> commenting out.
I now excluded timer interrupt related part.
To my mind other changes are essentially tied together.
> PUT_PSR for Sparc64 needs CC_OP = CC_OP_FLAGS; like Sparc32.
Fixed, please find attached the updated version.
--
Kind regards,
Igor V. Kovalenko
On Sun, Jul 12, 2009 at 12:43 AM, Stuart Brady<sdbrady@ntlworld.com> wrote:
> On Sat, Jul 11, 2009 at 10:22:18PM +0400, Igor Kovalenko wrote:
>> It is clear that intention is to byte-swap value to be written, not
>> the target address.
>
> @@ -1949,13 +1949,13 @@ void helper_st_asi(target_ulong addr, ta
> case 0x89: // Secondary LE
> switch(size) {
> case 2:
> - addr = bswap16(addr);
> + addr = bswap16(val);
> ^^^^
> Shouldn't that be 'val = bswap16(val)' (and likewise for the 32-bit and
> 64-bit cases)? Also needs a 'signed-off-by:'...
>
> Cheers,
> --
> Stuart Brady
>
Thanks, that part I did not runtime-tested.
Not sure if those asi stores are of any use for user-mode emulator.
Please find attached the corrected version.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
Allocate irq just before passing it to pci bridge initialization
and actually use it to initialize pci bridge.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
This patch extracts common part of sparc64 tag
matching code used by IMMU and DMMU lookups.
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
This Implement physical address truncation in mmu bypass mode.
IMMU bypass is also active when cpu enters RED_STATE
Signed-off-by: igor.v.kovalenko@gmail.com
--
Kind regards,
Igor V. Kovalenko
For the sake of consistency. I pulled in the wrong patches from Gerd when
he did the qdev conversion.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Commit 6a7ad299 ("Call qemu_bh_delete at bdrv_aio_bh_cb") deletes emulated
aio bottom halves to prevent endless accumulation. However, it leaves a
stale ->bh pointer, which is then waited on when the aio is reused.
Zeroing the pointer fixes the issue, allowing vmdk format images to be used.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
When we finish migration, there may be pending async io requests
in flight. If we don't flush it before stage3 starting, it might be
the case that the guest loses it.
Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Allocate enough memory for KVM_GET_MSR_INDEX_LIST as older kernels shot
far beyond their limits, corrupting user space memory.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Usage of msi vectors is controlled by the guest and so needs to be
restored on load. Do this for msi vectors used by the virtio device.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
MSIX present bit is tested incorrectly, and only happens to work because
the bit we are testing is 0x1. Add braces to fix this.
Reported-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Clean up msix vector usage state on load. Since guest might have control
over it through the device, the device will have to load this state from
file.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Contrary to what one could expect, the size of L1 tables is not cluster
aligned. So as we're writing whole sectors now instead of single entries,
we need to ensure that the L1 table in memory is large enough; otherwise
write would access memory after the end of the L1 table.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Scanning for devices via /sys/bus/usb/devices/ and using them via the
/dev/bus/usb/<bus>/<device> character devices is the prefered method
on modern kernels, so try that first.
When using SELinux and libvirt, qemu will have access to /sys/bus/usb
but not /proc/bus/usb, so although the current code will work just
fine, it will generate SELinux AVC warnings.
See also:
https://bugzilla.redhat.com/508326
Reported-by: Daniel Berrange <berrange@redhat.com>
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This fixes a possible endianness issue in the usb-ohci hw module.
hcca.frame and ohci->frame_number are 16bit, so use cpu_to_le16().
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
qemu-io leaks the request buffer whenever the read or write function isn't
executed completely down the "normal" code path.
[hch: also fix the aio and vectored variants the same way]
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Add a -g flag to the open command and the main qemu-io command line to
allow opening a file growable. This is only allowed for protocols,
mirroring the limitation exposed through bdrv_file_open.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Fix up a couple of issues with validating the input of the various
length arguments for the vectored I/O commands:
- do the alignment check on each length instead the always 0 count argument
- use a long long varibale for the cvtnum return value so that we can check
wether it wasn't a number
- check for a too large argument instead of truncating it
Also refactor it into a common helper for all four calers and avoid parsing
the numbers twice.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Set the Linux process name to the name argument specified with name. I find
this useful to see which guests are taking CPU time in top.
This doesn't affect ps, which checks argv[0], but rewriting the
environment uses much more code, so I only used this simple way.
v2: Use separate process= argument, no prefixes.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
In order to allow overriding flags that are set by configure, we have to
append them instead of prepending as it is done so far.
v2: Clarify documentation.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
control vector is saved/restored by virtio-pci,
it does not belong in virtio.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This fixes segfault reported by Kevin Wolf,
and simplifies the code in msix_save.
Reported-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Otherwise if you hot remove an eepro100 NIC and then migrate,
you get:
Unknown savevm section or instance 'eeprom' 0
on the destination side.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
