Alexander Graf writes:
> Add an option for hostmem-file to start the memory object at an offset
> into the target file. This is useful if multiple memory objects reside
> inside the same target file, such as a device node.
>
> In particular, it's useful to map guest memory directly into /dev/mem
Hi Yu,
On Mon, Apr 3, 2023 at 6:59 PM Yu Zhang wrote:
>
> Dear Laurent,
>
> Thank you for your quick reply. We used qemu-7.1, but it is reproducible with
> qemu from v6.2 to the recent v8.0 release candidates.
> I found that it's introduced by the commit 9323f892b39 (between v6.2.0-rc2
> and v
On 3/25/2023 6:54 PM, Richard Henderson wrote:
> This builds on Fei and Zhiwei's SUM and TB_FLAGS changes.
>
> * Reclaim 5 TB_FLAGS bits, since we nearly ran out.
>
> * Using cpu_mmu_index(env, true) is insufficient to implement
> HLVX properly. While that chooses the correct mmu_idx, it
Hi Dorinda,
Hi Volker,
Filling a buffer with zeros to produce silence still wrong for
unsigned
samples. For example, a 0 in SPA_AUDIO_FORMAT_U8 format maps to
-1.0 in
SPA_AUDIO_FORMAT_F32.
This is a bug. On a buffer underrun, the buffer filled with
silence is
dr
On 04/04/2023 0:36, Alex Williamson wrote:
External email: Use caution opening links or attachments
On Mon, 3 Apr 2023 22:36:42 +0200
Cédric Le Goater wrote:
On 4/3/23 15:00, Avihai Horon wrote:
Currently, VFIO log_sync can be issued while migration is in SETUP
state. However, doing this
On 4/3/23 19:11, gaosong wrote:
在 2023/4/4 上午4:13, Richard Henderson 写道:
On 4/3/23 05:55, gaosong wrote:
Hi, Richard
在 2023/4/1 下午1:03, Richard Henderson 写道:
On 3/27/23 20:06, Song Gao wrote:
+static void gen_vsat_s(unsigned vece, TCGv_vec t, TCGv_vec a, int64_t imm)
+{
+ TCGv_vec t1;
+
On 2023/4/4 11:12, LIU Zhiwei wrote:
On 2023/4/4 10:06, Weiwei Li wrote:
Add a base pc_save for PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
We can get pc-relative address from following formula:
real_pc = (old)env->pc + diff, whe
On 3/27/23 20:06, Song Gao wrote:
Introduce set_fpr() and get_fpr() and remove cpu_fpr.
Signed-off-by: Song Gao
---
.../loongarch/insn_trans/trans_farith.c.inc | 72 +++
target/loongarch/insn_trans/trans_fcmp.c.inc | 12 ++--
.../loongarch/insn_trans/trans_fmemory.c.inc |
On 3/27/23 20:06, Song Gao wrote:
+static bool trans_vldi(DisasContext *ctx, arg_vldi *a)
+{
+int sel, vece;
+uint64_t value;
+CHECK_SXE;
+
+sel = (a->imm >> 12) & 0x1;
+
+if (sel) {
+/* VSETI.D */
+value = vldi_get_value(ctx, a->imm);
+vece = MO_64;
+
On 2023/4/4 11:06, LIU Zhiwei wrote:
On 2023/4/4 10:06, Weiwei Li wrote:
Compute the target address before storing it into badaddr
when mis-aligned exception is triggered.
Use a target_pc temp to store the target address to avoid
the confusing operation that udpate target address into
cpu_pc
On 3/27/23 20:06, Song Gao wrote:
+void HELPER(vld_b)(CPULoongArchState *env, uint32_t vd, target_ulong addr)
+{
+int i;
+VReg *Vd = &(env->fpr[vd].vreg);
+#if !defined(CONFIG_USER_ONLY)
+MemOpIdx oi = make_memop_idx(MO_TE | MO_UNALN, cpu_mmu_index(env, false));
+
+for (i = 0; i <
On 2023/4/4 11:12, LIU Zhiwei wrote:
On 2023/4/4 10:06, Weiwei Li wrote:
Add a base pc_save for PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
We can get pc-relative address from following formula:
real_pc = (old)env->pc + diff, whe
On 2023/4/4 10:06, Weiwei Li wrote:
Add a base pc_save for PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
We can get pc-relative address from following formula:
real_pc = (old)env->pc + diff, where diff = target_pc - ctx->pc_save.
Use
On 2023/4/4 10:06, Weiwei Li wrote:
Compute the target address before storing it into badaddr
when mis-aligned exception is triggered.
Use a target_pc temp to store the target address to avoid
the confusing operation that udpate target address into
cpu_pc before misalign check, then update it i
On 2023/4/4 10:06, Weiwei Li wrote:
Transform the fetch address in cpu_get_tb_cpu_state() when pointer
mask for instruction is enabled.
Signed-off-by: Weiwei Li
Signed-off-by: Junqiang Wang
Reviewed-by: Richard Henderson
---
target/riscv/cpu.h| 1 +
target/riscv/cpu_helper.c | 2
On 2023/4/4 10:13, liweiwei wrote:
On 2023/4/4 09:58, LIU Zhiwei wrote:
On 2023/4/1 20:49, Weiwei Li wrote:
Add a base save_pc For PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
Sync pc before it's used or updated from tb related pc:
在 2023/4/3 19:04, Gerd Hoffmann 写道:
On Mon, Apr 03, 2023 at 10:29:52AM +, Michael Brown wrote:
On 03/04/2023 11:13, Chao Li wrote:
This problem is because the gcc-12 does not yet to support the option
'mno-explicit-reloc', this option is used to open the new reloaction
type for LoongArch,
On 2023/4/4 09:58, LIU Zhiwei wrote:
On 2023/4/1 20:49, Weiwei Li wrote:
Add a base save_pc For PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
Sync pc before it's used or updated from tb related pc:
real_pc = (old)env->pc + target_
在 2023/4/4 上午4:13, Richard Henderson 写道:
On 4/3/23 05:55, gaosong wrote:
Hi, Richard
在 2023/4/1 下午1:03, Richard Henderson 写道:
On 3/27/23 20:06, Song Gao wrote:
+static void gen_vsat_s(unsigned vece, TCGv_vec t, TCGv_vec a,
int64_t imm)
+{
+ TCGv_vec t1;
+ int64_t max = (1l << imm) -
actual_address = (requested_address & ~mpmmask) | mpmbase.
Signed-off-by: Weiwei Li
Signed-off-by: Junqiang Wang
Reviewed-by: Daniel Henrique Barboza
Reviewed-by: LIU Zhiwei
---
target/riscv/vector_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/riscv/vecto
This patchset tries to fix some problem in current implementation for pointer
mask, and add support for pointer mask of instruction fetch.
The port is available here:
https://github.com/plctlab/plct-qemu/tree/plct-pm-fix-v6
v2:
* drop some error patchs
* Add patch 2 and 3 to fix the new problems
Add a base pc_save for PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
We can get pc-relative address from following formula:
real_pc = (old)env->pc + diff, where diff = target_pc - ctx->pc_save.
Use gen_get_target_pc to compute target addr
Enable PC-relative translation in system mode by setting CF_PCREL
field of tcg_cflags in riscv_cpu_realize().
Signed-off-by: Weiwei Li
Signed-off-by: Junqiang Wang
Reviewed-by: LIU Zhiwei
Reviewed-by: Richard Henderson
---
target/riscv/cpu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git
Transform the fetch address in cpu_get_tb_cpu_state() when pointer
mask for instruction is enabled.
Signed-off-by: Weiwei Li
Signed-off-by: Junqiang Wang
Reviewed-by: Richard Henderson
---
target/riscv/cpu.h| 1 +
target/riscv/cpu_helper.c | 20 +++-
target/riscv/csr.c
write_mstatus() can only change current xl when in debug mode.
And we need update cur_pmmask/base in this case.
Signed-off-by: Weiwei Li
Signed-off-by: Junqiang Wang
Reviewed-by: LIU Zhiwei
---
target/riscv/csr.c | 9 -
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/targe
Compute the target address before storing it into badaddr
when mis-aligned exception is triggered.
Use a target_pc temp to store the target address to avoid
the confusing operation that udpate target address into
cpu_pc before misalign check, then update it into badaddr
and restore cpu_pc to curren
On 2023/4/1 20:49, Weiwei Li wrote:
Add a base save_pc For PC-relative translation(CF_PCREL).
Diable the directly sync pc from tb by riscv_cpu_synchronize_from_tb.
Sync pc before it's used or updated from tb related pc:
real_pc = (old)env->pc + target_pc(from tb) - ctx->save_pc
Use gen_get_
On 3/27/23 20:06, Song Gao wrote:
+void HELPER(vshuf_b)(CPULoongArchState *env,
+ uint32_t vd, uint32_t vj, uint32_t vk, uint32_t va)
+{
+int i, m, k;
+VReg temp;
+VReg *Vd = &(env->fpr[vd].vreg);
+VReg *Vj = &(env->fpr[vj].vreg);
+VReg *Vk = &(env->fpr[vk]
c9f5aaa6bce8 ("sev: Add Error ** to sev_kvm_init()") converted
error_report() to error_setg(), however it missed one error_report()
and other 2 changes added error_report() after conversion. The result
is the caller - kvm_init() - crashes in error_report_err as local_err
is NULL.
Follow the patter
Moved architecture agnostic data types to their own
file to avoid "attempt to use poisoned TARGET_*"
error that results when including qapi header
with commands that aren't defined for all architectures.
Required to implement enabling `query-cpu-model-expansion`
on all architectures
Signed-off-by:
This patch enables 'query-cpu-model-expansion' on all
architectures. Only architectures that implement
the command will return results, others will return an
error message as before.
This patch lays the groundwork for parsing a
-cpu cpu,help option as specified in
https://gitlab.com/qemu-project/q
Change parsing of -cpu argument to allow -cpu cpu,help
to print options for the CPU type similar to
how the '-device' option works.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1480
Signed-off-by: Dinah Baum
---
cpu.c | 41 +++
Part 1 is a refactor/code motion patch for
qapi/machine target required for setup of
Part 2 which enables query-cpu-model-expansion
on all architectures
Part 3 implements the ',help' feature
Limitations:
Currently only 'FULL' expansion queries are implemented since
that's the only type enabled o
On 3/27/23 20:06, Song Gao wrote:
+static bool trans_vbsll_v(DisasContext *ctx, arg_vv_i *a)
+{
+int ofs;
+TCGv_i64 desthigh, destlow, high, low, t;
+
+CHECK_SXE;
+
+desthigh = tcg_temp_new_i64();
+destlow = tcg_temp_new_i64();
+high = tcg_temp_new_i64();
+low = tcg_te
On 3/27/23 20:06, Song Gao wrote:
This patch includes:
- VINSGR2VR.{B/H/W/D};
- VPICKVE2GR.{B/H/W/D}[U];
- VREPLGR2VR.{B/H/W/D}.
Signed-off-by: Song Gao
---
target/loongarch/disas.c| 33 ++
target/loongarch/insn_trans/trans_lsx.c.inc | 110
targe
On 3/27/23 20:06, Song Gao wrote:
+static void gen_vbitseli(unsigned vece, TCGv_vec a, TCGv_vec b, int64_t imm)
+{
+TCGv_vec t;
+
+t = tcg_temp_new_vec_matching(a);
+tcg_gen_dupi_vec(vece, t, imm);
tcg_constant_vec_matching.
+void HELPER(vseteqz_v)(CPULoongArchState *env, uint32_t
On 3/27/23 20:06, Song Gao wrote:
+static uint64_t vfcmp_common(CPULoongArchState *env,
+ FloatRelation cmp, uint32_t flags)
+{
+bool ret;
+
+switch (cmp) {
+case float_relation_less:
+ret = (flags & FCMP_LT);
+break;
+case float_relatio
Nagle's algorithm adds latency in order to reduce network packet
overhead on small packets. But when we are already using corking to
merge smaller packets into transactional requests, the extra delay
from TCP defaults just gets in the way (see recent commit bd2cd4a4).
For reference, qemu as an NB
On Fri, Mar 31, 2023 at 11:04 PM Eugenio Pérez wrote:
>
> I'd like to be notified on SVQ patches and review them.
>
> Signed-off-by: Eugenio Pérez
Acked-by: Jason Wang
Thanks
> ---
> MAINTAINERS | 4
> 1 file changed, 4 insertions(+)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index ef
Commit 82618d7bc341 ("block: Convert bdrv_get_allocated_file_size() to
co_wrapper") made nfs_get_allocated_file_size() a coroutine. The
coroutine still uses BDRV_POLL_WHILE() to wait for the NFS RPC to
complete.
Take it a step further and yield the coroutine until the RPC completes.
This avoids th
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
inside the same target file, such as a device node.
In particular, it's useful to map guest memory directly into /dev/mem
for experimentation.
To make this
On 03.04.23 09:13, David Hildenbrand wrote:
On 01.04.23 19:47, Stefan Hajnoczi wrote:
On Sat, Apr 01, 2023 at 12:42:57PM +, Alexander Graf wrote:
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
On Mon, 3 Apr 2023 22:36:42 +0200
Cédric Le Goater wrote:
> On 4/3/23 15:00, Avihai Horon wrote:
> > Currently, VFIO log_sync can be issued while migration is in SETUP
> > state. However, doing this log_sync is at best redundant and at worst
> > can fail.
> >
> > Redundant -- all RAM is marked d
On Sun, Apr 02, 2023 at 05:48:38PM +, Lukas Straub wrote:
> Since ec6f3ab9, migration with compress enabled was broken, because
> the compress threads use a dummy QEMUFile which just acts as a
> buffer and that commit accidentally changed it to use the outgoing
> migration channel instead.
Sor
On Sun, Apr 02, 2023 at 05:47:45PM +, Lukas Straub wrote:
> There has never been a test for migration with compress enabled.
>
> Add a suitable test, testing with compress-wait-thread = false
> too.
>
> iterations = 2 is intentional, so it also tests that no invalid
> thread state is left ove
On 3/24/23 16:22, Huang Rui wrote:
> On Thu, Mar 16, 2023 at 07:14:47AM +0800, Dmitry Osipenko wrote:
>> On 3/13/23 18:55, Huang Rui wrote:
>>> On Mon, Mar 13, 2023 at 01:51:03AM +0800, Dmitry Osipenko wrote:
On 3/12/23 12:22, Huang Rui wrote:
> From: Antonio Caggiano
>
> Request
On Mon, Apr 3, 2023 at 12:35 PM Richard Henderson <
richard.hender...@linaro.org> wrote:
> On 4/3/23 07:46, Peter Maydell wrote:
> > The '-singlestep' option is confusing, because it doesn't actually
> > have anything to do with single-stepping the CPU. What it does do
> > is force TCG emulation t
On 3/4/23 20:29, Stefan Hajnoczi wrote:
Only report a transport reset event to the guest after the SCSIDevice
has been unrealized by qdev_simple_device_unplug_cb().
qdev_simple_device_unplug_cb() sets the SCSIDevice's qdev.realized field
to false so that scsi_device_find/get() no longer see it.
On Mon, Apr 3, 2023 at 8:46 AM Peter Maydell
wrote:
> The '-singlestep' option is confusing, because it doesn't actually
> have anything to do with single-stepping the CPU. What it does do
> is force TCG emulation to put one guest instruction in each TB,
> which can be useful in some situations.
On 4/3/23 15:00, Avihai Horon wrote:
Currently, VFIO log_sync can be issued while migration is in SETUP
state. However, doing this log_sync is at best redundant and at worst
can fail.
Redundant -- all RAM is marked dirty in migration SETUP state and is
transferred only after migration is set to
Am 3. April 2023 12:27:14 UTC schrieb Jason Andryuk :
>On Mon, Apr 3, 2023 at 5:33 AM Anthony PERARD
>wrote:
>>
>> On Sat, Apr 01, 2023 at 10:36:45PM +, Bernhard Beschow wrote:
>> >
>> >
>> > Am 30. März 2023 13:00:25 UTC schrieb Anthony PERARD
>> > :
>> > >On Sun, Mar 12, 2023 at 01:02:1
Hi Volker, Marc.
I have spent a significant amount of time revising the patchset and I'm
eager to see them included in the project. I understand that reviewing the
patches can be a time-consuming process and I appreciate the effort you've
put into providing feedback and guiding me through the revi
This commit adds a new audiodev backend to allow QEMU to use Pipewire as
both an audio sink and source. This backend is available on most systems
Add Pipewire entry points for QEMU Pipewire audio backend
Add wrappers for QEMU Pipewire audio backend in qpw_pcm_ops()
qpw_write function returns the c
On 4/3/23 05:55, gaosong wrote:
Hi, Richard
在 2023/4/1 下午1:03, Richard Henderson 写道:
On 3/27/23 20:06, Song Gao wrote:
+static void gen_vsat_s(unsigned vece, TCGv_vec t, TCGv_vec a, int64_t imm)
+{
+ TCGv_vec t1;
+ int64_t max = (1l << imm) - 1;
This needed 1ull, but better to just us
On 03.04.23 08:28, Markus Armbruster wrote:
Alexander Graf writes:
Add an option for hostmem-file to start the memory object at an offset
into the target file. This is useful if multiple memory objects reside
inside the same target file, such as a device node.
In particular, it's useful to
Hi, Claudio,
Thanks for the context.
On Mon, Apr 03, 2023 at 09:47:26AM +0200, Claudio Fontana wrote:
> Hi, not sure if what is asked here is context in terms of the previous
> upstream discussions or our specific requirement we are trying to bring
> upstream.
>
> In terms of the specific require
On 4/3/23 07:46, Peter Maydell wrote:
The run-state.json file is missing a trailing newline; add it.
Signed-off-by: Peter Maydell
---
Noticed this because my editor wanted to add the newline
when I touched the file for the following patch...
---
qapi/run-state.json | 2 +-
1 file changed, 1 i
On 4/3/23 07:46, Peter Maydell wrote:
The HMP 'info status' output includes "(single step mode)" when we are
running with TCG one-insn-per-tb enabled. Change this text to
"(one insn per TB)" to match the new command line option names.
We don't need to have a deprecation/transition plan for this,
On 4/3/23 07:46, Peter Maydell wrote:
The 'singlestep' HMP command is confusing, because it doesn't
actually have anything to do with single-stepping the CPU. What it
does do is force TCG emulation to put one guest instruction in each
TB, which can be useful in some situations.
Create a new HMP
On 4/3/23 07:46, Peter Maydell wrote:
Document that the -singlestep command line option is now
deprecated, as it is replaced by either the TCG accelerator
property 'one-insn-per-tb' for system emulation or the new
'-one-insn-per-tb' option for usermode emulation, and remove
the only use of the de
On 4/3/23 07:46, Peter Maydell wrote:
The '-singlestep' option is confusing, because it doesn't actually
have anything to do with single-stepping the CPU. What it does do
is force TCG emulation to put one guest instruction in each TB,
which can be useful in some situations.
Create a new command
From: Francesco Cagnin
These helpers will be also used for HVF. Aside from reformatting a
couple of comments for 'checkpatch.pl' and updating meson to compile
'hyp_gdbstub.c', this is just code motion.
Signed-off-by: Francesco Cagnin
Reviewed-by: Alex Bennée
Reviewed-by: Peter Maydell
---
ta
From: Francesco Cagnin
Support is added for single-stepping, software breakpoints, hardware
breakpoints and watchpoints. The code has been structured like the KVM
counterpart (and many parts are basically identical).
Guests can be debugged through the gdbstub.
While guest debugging is enabled,
From: Francesco Cagnin
This patch series aims to add gdbstub support to HVF (the 'QEMU
accelerator on macOS that employs Hypervisor.framework') on Apple
Silicon hosts.
The proposed implementation, structured like the KVM counterpart,
handles single-stepping, software breakpoints, hardware breakp
On Wed, 22 Mar 2023 at 20:15, Peter Maydell wrote:
>
> On Tue, 7 Mar 2023 at 09:53, Peter Maydell wrote:
> >
> > On Sat, 4 Mar 2023 at 15:39, Peter Maydell wrote:
> > >
> > > On Thu, 2 Mar 2023 at 17:22, Peter Maydell
> > > wrote:
> > > >
> > > > migration-test has been flaky for a long time,
On 4/3/23 07:46, Peter Maydell wrote:
The '-singlestep' option is confusing, because it doesn't actually
have anything to do with single-stepping the CPU. What it does do
is force TCG emulation to put one guest instruction in each TB,
which can be useful in some situations.
Create a new command
These functions must be called with the AioContext acquired:
/* Callers must hold exp->ctx lock */
void blk_exp_ref(BlockExport *exp)
...
/* Callers must hold exp->ctx lock */
void blk_exp_unref(BlockExport *exp)
Signed-off-by: Stefan Hajnoczi
---
block/export/fuse.c | 4
1 file
On 4/3/23 07:46, Peter Maydell wrote:
uint32_t curr_cflags(CPUState *cpu)
{
uint32_t cflags = cpu->tcg_cflags;
+TCGState *tcgstate = TCG_STATE(current_accel());
As mentioned against the cover, this is a very hot path.
We should try for something less expensive. Perhaps as simple
Each vhost-user-blk request runs in a coroutine. When the BlockBackend
enters a drained section we need to enter a quiescent state. Currently
any in-flight requests race with bdrv_drained_begin() because it is
unaware of vhost-user-blk requests.
When blk_co_preadv/pwritev()/etc returns it wakes th
Only report a transport reset event to the guest after the SCSIDevice
has been unrealized by qdev_simple_device_unplug_cb().
qdev_simple_device_unplug_cb() sets the SCSIDevice's qdev.realized field
to false so that scsi_device_find/get() no longer see it.
scsi_target_emulate_report_luns() also ne
vhost_user_server_stop() uses AIO_WAIT_WHILE(). AIO_WAIT_WHILE()
requires that AioContext is only acquired once.
Since blk_exp_request_shutdown() already acquires the AioContext it
shouldn't be acquired again in vhost_user_server_stop().
Signed-off-by: Stefan Hajnoczi
---
util/vhost-user-server
Host notifiers trigger virtqueue processing. There are critical sections
when new I/O requests must not be submitted because they would cause
interference.
In the past this was solved using aio_set_event_notifiers()
is_external=true argument, which disables fd monitoring between
aio_disable/enable
All callers now pass is_external=false to aio_set_fd_handler() and
aio_set_event_notifier(). The aio_disable_external() API that
temporarily disables fd handlers that were registered is_external=true
is therefore dead code.
Remove aio_disable_external(), aio_enable_external(), and the
is_external
The aio_disable_external() API temporarily suspends file descriptor monitoring
in the event loop. The block layer uses this to prevent new I/O requests being
submitted from the guest and elsewhere between bdrv_drained_begin() and
bdrv_drained_end().
While the block layer still needs to prevent new
This is part of ongoing work to remove the aio_disable_external() API.
Use BlockDevOps .drained_begin/end/poll() instead of
aio_set_fd_handler(is_external=true).
As a side-effect the FUSE export now follows AioContext changes like the
other export types.
Signed-off-by: Stefan Hajnoczi
---
bloc
There is no need to suspend activity between aio_disable_external() and
aio_enable_external(), which is mainly used for the block layer's drain
operation.
This is part of ongoing work to remove the aio_disable_external() API.
Signed-off-by: Stefan Hajnoczi
---
hw/i386/kvm/xen_xenstore.c | 2 +-
vhost-user activity must be suspended during bdrv_drained_begin/end().
This prevents new requests from interfering with whatever is happening
in the drained section.
Previously this was done using aio_set_fd_handler()'s is_external
argument. In a multi-queue block layer world the aio_disable_exter
is_external=true suspends fd handlers between aio_disable_external() and
aio_enable_external(). The block layer's drain operation uses this
mechanism to prevent new I/O from sneaking in between
bdrv_drained_begin() and bdrv_drained_end().
The xen-block device actually works fine with is_external=f
The VuServer object has a refcount field and ref/unref APIs. The name is
confusing because it's actually an in-flight request counter instead of
a refcount.
Normally a refcount destroys the object upon reaching zero. The VuServer
counter is used to wake up the vhost-user coroutine when there are n
vduse_blk_detach_ctx() waits for in-flight requests using
AIO_WAIT_WHILE(). This is not allowed according to a comment in
bdrv_set_aio_context_commit():
/*
* Take the old AioContex when detaching it from bs.
* At this point, new_context lock is already acquired, and we are now
* also ta
This patch is part of an effort to remove the aio_disable_external()
API because it does not fit in a multi-queue block layer world where
many AioContexts may be submitting requests to the same disk.
The SCSI emulation code is already in good shape to stop using
aio_disable_external(). It was only
On 03.04.23 17:49, Peter Xu wrote:
On Mon, Apr 03, 2023 at 09:13:29AM +0200, David Hildenbrand wrote:
On 01.04.23 19:47, Stefan Hajnoczi wrote:
On Sat, Apr 01, 2023 at 12:42:57PM +, Alexander Graf wrote:
Add an option for hostmem-file to start the memory object at an offset
into the target
On 4/3/23 07:46, Peter Maydell wrote:
The HMP 'singlestep' command, the QMP 'query-status' command and the
HMP 'info status' command (which is just wrapping the QMP command
implementation) look at the 'singlestep' global variable. Make them
access the new TCG accelerator 'one-insn-per-tb' propert
On 4/3/23 07:46, Peter Maydell wrote:
This commit adds 'one-insn-per-tb' as a property on the TCG
accelerator object, so you can enable it with
-accel tcg,one-insn-per-tb=on
It has the same behaviour as the existing '-singlestep' command line
option. We use a different name because 'singles
On 4/3/23 10:29, Paolo Bonzini wrote:
In some cases (for example gen_compute_branch_nm in
nanomips_translate.c.inc) registers can be unused
on some paths and a negative value is passed in that case:
gen_compute_branch_nm(ctx, OPC_BPOSGE32, 4, -1, -2,
imm <
Thomas Huth writes:
> On 03/04/2023 16.55, Markus Armbruster wrote:
>> Alex Bennée writes:
>>
>>> Markus Armbruster writes:
>>>
Alex Bennée writes:
> ...
>>> I was under the impression things like -hda wouldn't work say on an Arm
>>> machine because you don't know what sort of interface
* Peter Maydell (peter.mayd...@linaro.org) wrote:
> The 'singlestep' HMP command is confusing, because it doesn't
> actually have anything to do with single-stepping the CPU. What it
> does do is force TCG emulation to put one guest instruction in each
> TB, which can be useful in some situations.
In some cases (for example gen_compute_branch_nm in
nanomips_translate.c.inc) registers can be unused
on some paths and a negative value is passed in that case:
gen_compute_branch_nm(ctx, OPC_BPOSGE32, 4, -1, -2,
imm << 1);
To avoid an out of bounds access in
"Dr. David Alan Gilbert (git)" writes:
> From: "Dr. David Alan Gilbert"
>
> I'm leaving Red Hat next week, so clean up the maintainer entries.
>
> 'virtiofs' is just the device code now, so is pretty small, and
> Stefan is still a maintainer there.
>
> 'migration' still has Juan.
>
> For 'HMP' I
On Mon, Apr 03, 2023 at 06:16:18PM +0200, Igor Mammedov wrote:
> with Q35 using ACPI PCI hotplug by default, user's request to unplug
> device is ignored when it's issued before guest OS has been booted.
> And any additional attempt to request device hot-unplug afterwards
> results in following err
On 4/3/23 19:00, Cédric Le Goater wrote:
On 4/3/23 18:28, Pierre Morel wrote:
Add some basic examples for the definition of cpu topology
in s390x.
Signed-off-by: Pierre Morel
---
MAINTAINERS | 2 +
docs/devel/index-internals.rst | 1 +
docs/devel/s390-cpu-t
On Mon, Apr 3, 2023 at 7:32 AM Jason Wang wrote:
>
> On Fri, Mar 31, 2023 at 6:12 PM Eugenio Perez Martin
> wrote:
> >
> > On Fri, Mar 31, 2023 at 10:00 AM Jason Wang wrote:
> > >
> > >
> > > 在 2023/3/30 18:42, Eugenio Perez Martin 写道:
> > > > On Thu, Mar 30, 2023 at 8:23 AM Jason Wang wrote:
>
On Thu, Mar 23, 2023 at 01:19:06PM +0800, Sam Li wrote:
> The patch tests zone append writes by reporting the zone wp after
> the completion of the call. "zap -p" option can print the sector
> offset value after completion, which should be the start sector
> where the append write begins.
>
> Sign
On Thu, Mar 23, 2023 at 01:19:07PM +0800, Sam Li wrote:
> Signed-off-by: Sam Li
> Reviewed-by: Dmitry Fomichev
> ---
> block/file-posix.c | 3 +++
> block/trace-events | 2 ++
> 2 files changed, 5 insertions(+)
Reviewed-by: Stefan Hajnoczi
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On Thu, Mar 23, 2023 at 01:19:05PM +0800, Sam Li wrote:
> diff --git a/block/io.c b/block/io.c
> index 5dbf1e50f2..fe9cabaaf6 100644
> --- a/block/io.c
> +++ b/block/io.c
> @@ -3152,6 +3152,27 @@ out:
> return co.ret;
> }
>
> +int coroutine_fn bdrv_co_zone_append(BlockDriverState *bs, int64
On Thu, Mar 23, 2023 at 01:19:04PM +0800, Sam Li wrote:
> Since Linux doesn't have a user API to issue zone append operations to
> zoned devices from user space, the file-posix driver is modified to add
> zone append emulation using regular writes. To do this, the file-posix
> driver tracks the wp
On 4/3/23 18:28, Pierre Morel wrote:
Add some basic examples for the definition of cpu topology
in s390x.
Signed-off-by: Pierre Morel
---
MAINTAINERS| 2 +
docs/devel/index-internals.rst | 1 +
docs/devel/s390-cpu-topology.rst | 161 +++
do
Dear Laurent,
Thank you for your quick reply. We used qemu-7.1, but it is reproducible
with qemu from v6.2 to the recent v8.0 release candidates.
I found that it's introduced by the commit 9323f892b39 (between v6.2.0-rc2
and v6.2.0-rc3).
If it doesn't break anything else, it suffices to remove t
On 4/3/23 07:46, Peter Maydell wrote:
* I have written patch 3 on the assumption that curr_cflags()
is not such a hot codepath that we can't afford to have
a QOM cast macro in it; the alternative would be to
keep it using a global variable but make the global be
restricted to ac
On 4/3/23 17:27, David Woodhouse wrote:
On Wed, 2023-03-29 at 22:30 +0700, Bui Quang Minh wrote:
I do some more testing on my hardware, your point is correct when dest
== 0x, the interrupt is delivered to all APICs regardless of
their mode.
To be precisely, it only broadcasts to CPU
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