Hi:
I develop a custom os use qemu and use macos as host, I use the net
argument '-net nic,model=pcnet -net tap,ifname=tap0,script=no,downscript=no’
when run the qemu-system-i386,then I can get the network device in my custom os:
pci_device_dump: vendor id: 0x1022
pci_device_dum
On Fri, Jan 14, 2022 at 6:18 AM Peter Maydell
wrote:
> On Sun, 9 Jan 2022 at 17:08, Warner Losh wrote:
> >
> > Implement the meat of the sigaltstack(2) system call with do_sigaltstack.
> >
> > Signed-off-by: Stacey Son
> > Signed-off-by: Kyle Evans
> > Signed-off-by: Warner Losh
> > ---
> >
On Samstag, 22. Januar 2022 20:12:16 CET Christian Schoenebeck wrote:
> The 9p test cases use mkdtemp() to create a temporary directory for
> running the 'local' 9p tests with real files/dirs. Unlike mktemp()
> which only generates a unique file name, mkdtemp() also creates the
> directory, therefo
The 9p test cases use mkdtemp() to create a temporary directory for
running the 'local' 9p tests with real files/dirs. Unlike mktemp()
which only generates a unique file name, mkdtemp() also creates the
directory, therefore the subsequent mkdir() was wrong and caused
errors on some systems.
Signed
Currently when we fill in a TableDesc based on the value the guest
has written to the GITS_BASER register, we calculate both:
* num_entries : the number of entries in the table, constrained
by the amount of memory the guest has given it
* num_ids : the number of IDs we support for this table,
The GICD_CTLR distributor register has enable bits which control
whether the different interrupt groups (Group 0, Non-secure Group 1
and Secure Group 1) are forwarded to the CPU. We get this right for
traditional interrupts, but forgot to account for it when adding
LPIs. LPIs are always Group 1 N
The current ITS code clears GITS_CREADR when GITS_CTLR.ENABLED is set.
This is not correct -- guest code can validly clear ENABLED and then
set it again and expect the ITS to continue processing where it left
off. Remove the erroneous assignment.
Signed-off-by: Peter Maydell
---
hw/intc/arm_gicv
The ITS-related parts of the redistributor code make some checks for
whether registers like GICR_PROPBASER and GICR_PENDBASER are zero.
There is no requirement in the specification for treating zeroes in
these address registers specially -- they contain guest physical
addresses and it is entirely v
The ITS has a bank of 8 GITS_BASER registers, which allow the
guest to specify the base address of various data tables. Each
register has a read-only type field indicating which table it is for
and a read-write field where the guest can write in the base address
(among other things). We currently
The GICR_CTLR.CES bit is a read-only bit which is set to 1 to indicate
that the GICR_CTLR.EnableLPIs bit can be written to 0 to disable
LPIs (as opposed to allowing LPIs to be enabled but not subsequently
disabled). Our implementation permits this, so advertise it
by setting CES to 1.
Signed-off-b
In an SMP system it can be unclear which CPU is taking an exception;
add the CPU index (which is the same value used in the TCG 'Trace
%d:' logging) to the "Taking exception" log line to clarify it.
Signed-off-by: Peter Maydell
---
target/arm/internals.h | 2 +-
target/arm/helper.c| 9 ++
The ITS specification says that when the guest writes to GITS_CBASER
this causes GITS_CREADR to be cleared. However it does not have an
equivalent clause for GITS_CWRITER. (This is because GITS_CREADR is
read-only, but GITS_CWRITER is writable and the guest can initialize
it.) Remove the code tha
The list of #defines for the ITS command packet numbers is neither
in alphabetical nor numeric order. Sort it into numeric order.
Signed-off-by: Peter Maydell
---
hw/intc/gicv3_internal.h | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/hw/intc/gicv3_internal.h b/hw
I noticed while working on the new-in-GICv4 ITS commands
that we'd forgotten to implement the GICv3 MOVI and MOVALL
commands. These move interrupts from one redistributor to
another; Linux doesn't use MOVALL but does use MOVI if
it wants to power down a CPU (when it needs to migrate
interrupts form
Implement the ITS MOVALL command, which takes all the pending
interrupts on a source redistributor and makes the not-pending on
that source redistributor and pending on a destination redistributor.
This is a GICv3 ITS command which we forgot to implement. (It is
not used by Linux guests.)
Signed-
In our implementation, all ITSes connected to a GIC share a single
AddressSpace, which we keep in the GICv3State::dma_as field and
initialized based on the GIC's 'sysmem' property. The right place
to set it up by calling address_space_init() is therefore in the
GIC's realize method, not the ITS's r
The MemoryRegionOps gicv3_its_translation_ops currently provides only
a .write_with_attrs function, because the only register in this
region is the write-only GITS_TRANSLATER. However, if you don't
provide a read function and the guest tries reading from this memory
region, QEMU will crash because
The ITS currently has no tracepoints; add a minimal set
that allows basic monitoring of guest register accesses and
reading of commands from the command queue.
Signed-off-by: Peter Maydell
---
hw/intc/arm_gicv3_its.c | 11 +++
hw/intc/trace-events| 8
2 files changed, 19 in
Implement the ITS MOVI command. This command specifies a (physical) LPI
by DeviceID and EventID and provides a new ICID for it. The ITS must
find the interrupt translation table entry for the LPI, which will
tell it the old ICID. It then moves the pending state of the LPI from
the old redistributor
On Sat, Jan 22, 2022 at 10:44 AM Warner Losh wrote:
>
>
>
> On Fri, Jan 14, 2022 at 4:14 AM Peter Maydell
> wrote:
>>
>> On Sun, 9 Jan 2022 at 16:53, Warner Losh wrote:
>> >
>> > target_sigemptyset: resets a set to having no bits set
>> > qemu_sigorset: computes the or of two sets
>> > tar
On Sat, 22 Jan 2022 at 17:06, John Snow wrote:
>
>
>
> On Sat, Jan 22, 2022, 8:58 AM Peter Maydell wrote:
>>
>> On Sat, 22 Jan 2022 at 00:09, John Snow wrote:
>> >
>> > The following changes since commit
>> > 5e9d14f2bea6df89c0675df953f9c839560d2266:
>> >
>> > Merge remote-tracking branch
>>
On Sat, Jan 22, 2022, 8:58 AM Peter Maydell
wrote:
> On Sat, 22 Jan 2022 at 00:09, John Snow wrote:
> >
> > The following changes since commit
> 5e9d14f2bea6df89c0675df953f9c839560d2266:
> >
> > Merge remote-tracking branch
> 'remotes/alistair/tags/pull-riscv-to-apply-20220121-1' into staging
On Fri, Jan 14, 2022 at 4:14 AM Peter Maydell
wrote:
> On Sun, 9 Jan 2022 at 16:53, Warner Losh wrote:
> >
> > target_sigemptyset: resets a set to having no bits set
> > qemu_sigorset: computes the or of two sets
> > target_sigaddset: adds a signal to a set
> > target_sigismember: returns
Hi everyone,
We were writing a TCG plugin, and for every instruction executed, we wanted
to know the privilege level where it was executed, i.e. was it in user mode
or kernel mode.
Approaches we tried:
1. We tried to use vcpu_syscall_cb/vcpu_syscall_ret_cb initially - any
instruction execution b
Current code creates directories with mode 0644. Even the creator
can't create files in the new directory. Set all x mode flags in
variable mask and clear all x mode flags in function open() to
preserve the current open mode.
Signed-off-by: Volker Rümelin
---
hw/usb/dev-mtp.c | 4 ++--
1 file ch
On Sat, 22 Jan 2022 at 00:09, John Snow wrote:
>
> The following changes since commit 5e9d14f2bea6df89c0675df953f9c839560d2266:
>
> Merge remote-tracking branch
> 'remotes/alistair/tags/pull-riscv-to-apply-20220121-1' into staging
> (2022-01-21 10:31:25 +)
>
> are available in the Git repo
When building on FreeBSD we get:
[816/6851] Compiling C object libblockdev.fa.p/block_export_fuse.c.o
../block/export/fuse.c:628:16: error: use of undeclared identifier
'FALLOC_FL_KEEP_SIZE'
if (mode & FALLOC_FL_KEEP_SIZE) {
^
../block/export/fuse.c:632:16: error: use
Now that the mixing buffer size no longer adds to playback
latency, fix the samples vs. frames mix-up in the mixing buffer
size calculation. This change will go largely unnoticed as long
as the user doesn't use a buffer-size smaller than timer-period.
Signed-off-by: Volker Rümelin
---
audio/paau
Commit ff095e5231 "audio: api for mixeng code free backends"
introduced another FIFO for the audio subsystem with exactly the
same size as the mixing-engine FIFO. Most audio backends use
this generic FIFO. The generic FIFO used together with the
mixing-engine FIFO doubles the audio FIFO size, becau
Fix the same samples vs. frames mix-up that the previous commit
fixed for the PulseAudio backend.
Signed-off-by: Volker Rümelin
---
audio/sdlaudio.c | 7 ++-
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/audio/sdlaudio.c b/audio/sdlaudio.c
index e605c787ba..797b47bbdd 100644
The next patch reduces the effective qemu playback buffer size
by timer-period. Increase the number of jack audio buffers by
one to preserve the total effective buffer size. The size of one
jack audio buffer is 512 samples. With audio defaults that's
512 samples / 44100 samples/s = 11.6 ms and only
Add a pcm_ops function table for the capture backend. This avoids
additional code in the next patches to test if the pcm_ops table
is available.
Signed-off-by: Volker Rümelin
---
audio/audio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/audio/audio.c b/audio/audio.c
index 9e2d7fb209..5
Change the code to copy the playback stream in sequential order.
The advantage can be seen in the next patches where the stream
copy operation effectively becomes a write through operation.
The following diagram shows the average buffer fill level and
the stream copy sequence. ### represents a tim
This is a patch to improve the pulseaudio playback experience.
Asking pulseaudio for a playback latency of 15ms is quite
demanding. Increase this to 46ms. The total playback latency
now is 31ms larger. One of the next patches will reduce the
total playback latency again by more than 46ms.
Here is
Replace open-coded buffer arithmetic with the new function
audio_ring_posb(). That's the position in backward direction
of a given point at a given distance.
Signed-off-by: Volker Rümelin
---
audio/audio.c | 25 +++--
audio/audio_int.h | 6 ++
audio/coreaudio.c | 10
Simplify code by inlining function audio_pcm_sw_get_rpos_in()
at the only call site and remove the duplicated audio_bug()
test.
Signed-off-by: Volker Rümelin
---
audio/audio.c | 23 +--
1 file changed, 5 insertions(+), 18 deletions(-)
diff --git a/audio/audio.c b/audio/audio
Add a function audio_pcm_hw_conv_in() similar to the existing
counterpart function audio_pcm_hw_clip_out(). This function reduces
the number of calls to the pcm_ops functions get_buffer_in() and
put_buffer_in(). That's one less call to get_buffer_in() and
put_buffer_in() every time the conv_buffer
This patch series reduces the playback latency for audio backends,
in some cases significantly. For PulseAudio, the audio buffer is
also moved from the QEMU side to the PulseAudio server side. This
improves the drop-out safety for PulseAudio.
I actually measured the latency reduction with the Pul
Add the buffer_get_free pcm_ops function to reduce the effective
playback buffer size. All intermediate audio playback buffers
become temporary buffers.
Signed-off-by: Volker Rümelin
---
audio/dsoundaudio.c | 30 +-
1 file changed, 17 insertions(+), 13 deletions(-)
d
Add the buffer_get_free pcm_ops function to reduce the effective
playback buffer size. All intermediate audio playback buffers
become temporary buffers.
Signed-off-by: Volker Rümelin
---
audio/paaudio.c | 33 -
1 file changed, 24 insertions(+), 9 deletions(-)
dif
Move the function audio_pcm_hw_clip_out() into the correct
section 'Hard voice (playback)'.
Reviewed-by: Philippe Mathieu-Daudé
Signed-off-by: Volker Rümelin
---
audio/audio.c | 38 +++---
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/audio/audi
Return the free buffer size for the mmapped case in function
oss_buffer_get_free() to reduce the effective playback buffer
size. All intermediate audio playback buffers become temporary
buffers.
Signed-off-by: Volker Rümelin
---
audio/ossaudio.c | 7 ---
1 file changed, 4 insertions(+), 3 de
This reverts commit cbaf25d1f59ee13fc7542a06ea70784f2e000c04.
Since previous commit every audio backend has a pcm_ops function
table. It's no longer necessary to test if the table is available.
Signed-off-by: Volker Rümelin
---
audio/audio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletion
On Sat, 22 Jan 2022 at 09:50, Philippe Mathieu-Daudé wrote:
>
> On 20/1/22 16:16, Peter Maydell wrote:
> > The exynos4210_uart_post_load() function assumes that it is passed
> > the Exynos4210UartState, but it has been attached to the
> > VMStateDescription for the Exynos4210UartFIFO type. The re
ping https://patchew.org/QEMU/20211126140437.79745-1-n...@statshelix.com/
This patch is really small because all of the necessary functionality is
already in place. It's just a matter of setting the respective flags
(instead of just ignoring the buttons) and allocating these bits in the HID
descri
On 20/1/22 16:16, Peter Maydell wrote:
The exynos4210_uart_post_load() function assumes that it is passed
the Exynos4210UartState, but it has been attached to the
VMStateDescription for the Exynos4210UartFIFO type. The result is a
SIGSEGV when attempting to load VM state for any machine type
inc
On 20/1/22 18:31, matheus.fe...@eldorado.org.br wrote:
From: Matheus Ferst
Without this fix, any use of --cross-cc-cflags-* causes a message like:
$ ../configure --cross-cc-ppc64le=clang --cross-cc-cflags-ppc64le="-target
powerpc64le-unknown-linux-gnu -sysroot ..."
../configure: 1: eval: cross
On 21/1/22 07:32, Klaus Jensen wrote:
From: Klaus Jensen
This fixes CVE-2021-3929 "locally" by denying DMA to the iomem of the
device itself. This still allows DMA to MMIO regions of other devices
(e.g. doing P2P DMA to the controller memory buffer of another NVMe
device).
Fixes: CVE-2021-3929
+Gerd & David.
On 21/1/22 16:34, Daniel P. Berrangé wrote:
The current firmware descriptor schema for flash requires that both the
executable to NVRAM template paths be provided. This is fine for the
most common usage of EDK2 builds in virtualization where the separate
_CODE and _VARS files are
The DEFINE_PROP_UINT64_CHECKMASK maro applies certain mask check agaist
user-supplied property value, reject the value if it violates the bitmask.
Co-developed-by: Like Xu
Signed-off-by: Like Xu
Signed-off-by: Yang Weijiang
---
hw/core/qdev-properties.c| 19 +++
include/hw/
KVM legacy LBR patches have been merged in kernel 5.12, this patchset
is to expose the feature to guest from the perf capability MSR. Qemu can
add LBR format in cpu option to achieve it, e.g., -cpu host,lbr-fmt=0x5,
the format should match host value in IA32_PERF_CAPABILITIES.
Note, KVM legacy LBR
The Last Branch Recording (LBR) is a performance monitor unit (PMU)
feature on Intel processors which records a running trace of the most
recent branches taken by the processor in the LBR stack. This option
indicates the LBR format to enable for guest perf.
The LBR feature is enabled if below cond
52 matches
Mail list logo
