On Mon, Jul 25, 2022 at 1:48 PM Dao Lu wrote:
>
> This patch adds RISC-V Zihintpause support. The extension is set to be enabled
> by default and opcode has been added to insn32.decode.
>
> Added trans_pause to exit the TB and return to main loop.
>
> The change can also be found in:
>
Added support for RISC-V PAUSE instruction from Zihintpause extension,
enabled by default.
Tested-by: Heiko Stuebner
Reviewed-by: Alistair Francis
Signed-off-by: Dao Lu
---
target/riscv/cpu.c | 2 ++
target/riscv/cpu.h | 1 +
This patch adds RISC-V Zihintpause support. The extension is set to be enabled
by default and opcode has been added to insn32.decode.
Added trans_pause to exit the TB and return to main loop.
The change can also be found in:
https://github.com/dlu42/qemu/tree/zihintpause_support_v1
Tested along
On Mon, Jul 25, 2022 at 10:34 AM Kangjie Xu
wrote:
>
> Do you have any comments or suggestions about improvements to this patch
> set?
Will have a look and give feedback no later than the end of this week.
Thanks
>
>
> Regards,
>
> Kangjie
>
> 在 2022/7/18 19:16, Kangjie Xu 写道:
> > The virtio
at 3:36 AM, Stefan Hajnoczi wrote:
>
>
> On Sun, Jul 24, 2022, 11:21 Jinhao Fan wrote:
> at 9:29 PM, Stefan Hajnoczi wrote:
>
> >
> > Nice, perf(1) is good for that. You can enable trace events and add
> > kprobes/uprobes to record timestamps when specific functions are entered.
> >
>
>
Do you have any comments or suggestions about improvements to this patch
set?
Regards,
Kangjie
在 2022/7/18 19:16, Kangjie Xu 写道:
The virtio queue reset function has already been defined in the virtio spec 1.2.
The relevant virtio spec information is here:
On Fri, 22 Jul 2022, at 16:06, Cédric Le Goater wrote:
> A mx25l25635f chip model is generally found on these machines. It's
> newer and uses 4B opcodes which is better to exercise the support in
> the Linux kernel.
>
> Signed-off-by: Cédric Le Goater
> ---
> hw/arm/aspeed.c | 6 +++---
> 1
On Mon, Jul 25, 2022 at 9:24 AM Bin Meng wrote:
>
> On Wed, Jul 20, 2022 at 12:12 AM Bin Meng wrote:
> >
> > From: Bin Meng
> >
> > At present winsymlinks is set to 'nativestrict', and its behavior is:
> >
> > a) if native symlinks are enabled and exists, creates
> > as a native
On Wed, Jul 20, 2022 at 12:12 AM Bin Meng wrote:
>
> From: Bin Meng
>
> At present winsymlinks is set to 'nativestrict', and its behavior is:
>
> a) if native symlinks are enabled and exists, creates
> as a native Windows symlink;
> b) else if native symlinks are not enabled or if
On Sat, Jul 23, 2022 at 7:22 PM Atish Patra wrote:
>
> Since commit 40244040a7ac, multi-socket configuration with plic is
> broken as the hartid for second socket is calculated incorrectly.
> The hartid stored in addr_config already includes the offset
> for the base hartid for that socket.
On 7/23/22 05:06, Ilya Leoshkevich wrote:
Add a small test to avoid regressions.
Signed-off-by: Ilya Leoshkevich
Acked-by: Richard Henderson
r~
---
tests/tcg/s390x/Makefile.softmmu-target | 9 +
tests/tcg/s390x/unaligned-lowcore.S | 19 +++
2 files
On 7/23/22 05:06, Ilya Leoshkevich wrote:
Currently QEMU exits with code 0 on both panic an shutdown. For tests
it is useful to return 1 on panic, so that it counts as a test
failure.
Introduce a new exit-failure PanicAction that makes main() return
EXIT_FAILURE. Tests can use -action
On 7/20/22 19:27, Daniel Henrique Barboza wrote:
Coverity reports that commit fc34e81acd51 ("target/ppc: add macros to
check privilege level") turned the following code unreachable:
if (!prefixed && !(ctx->insns_flags2 & PPC2_LSQ_ISA207)) {
/* lq and stq were privileged prior to V. 2.07 */
On 7/19/22 17:41, Peter Maydell wrote:
The TARGET_SYS_TMPNAM implementation has two bugs spotted by
Coverity:
* confusion about whether 'len' has the length of the string
including or excluding the terminating NUL means we
lock_user() len bytes of memory but memcpy() len + 1 bytes
*
Hello All,
I am facing a lock situation between main-loop thread 1 and vcpu thread
4 when doing a qmp snapshot. QEMU is running on 6.0.x, checked the
upstream code and did not see any big change since between. Guest is a
Windows 10 VM. Unfortunately, I could not get into the windows vm or
On Sun, Jul 24, 2022, 11:21 Jinhao Fan wrote:
> at 9:29 PM, Stefan Hajnoczi wrote:
>
> >
> > Nice, perf(1) is good for that. You can enable trace events and add
> > kprobes/uprobes to record timestamps when specific functions are entered.
> >
>
> Thanks Stefan,
>
> One last question: Currently
On 7/19/22 17:41, Peter Maydell wrote:
The SET_ARG() macro returns an error indication; we check this in the
TARGET_SYS_GET_CMDLINE case but not when we use it in implementing
TARGET_SYS_ELAPSED. Check for and handle the errors via the do_fault
codepath, and update the comment documenting the
On 7/19/22 17:41, Peter Maydell wrote:
The console_write() semihosting function outputs guest data from a
buffer; it doesn't update that buffer. It therefore doesn't need to
pass a length value to unlock_user(), but can pass 0, meaning "do not
copy any data back to the guest memory".
On 7/19/22 17:41, Peter Maydell wrote:
The documentation comment for qemu_semihosting_console_write() says
* Returns: number of bytes written -- this should only ever be short
* on some sort of i/o error.
and the callsites rely on this. However, the implementation code
path which sends
On Fri, 2022-07-22 at 09:42 +0800, Weiwei Li wrote:
> 在 2022/7/21 下午11:31, Mayuresh Chitale 写道:
> > If smstateen is implemented and sstateen0.fcsr is clear then the
> > floating point operations must return illegal instruction
> > exception.
> >
> > Signed-off-by: Mayuresh Chitale
> > ---
> >
On Fri, 2022-07-22 at 08:31 +0800, Weiwei Li wrote:
> 在 2022/7/21 下午11:31, Mayuresh Chitale 写道:
> > Smstateen extension specifies a mechanism to close
> > the potential covert channels that could cause security issues.
> >
> > This patch adds the CSRs defined in the specification and
> > the
at 9:29 PM, Stefan Hajnoczi wrote:
>
> Nice, perf(1) is good for that. You can enable trace events and add
> kprobes/uprobes to record timestamps when specific functions are entered.
>
Thanks Stefan,
One last question: Currently we can achieve hundreds of KIOPS. That means
perf can easily
This patch introduces new VhostOps vhost_set_config_call.
This function allows the qemu to set the config
event fd to kernel driver.
Signed-off-by: Cindy Lu
---
include/hw/virtio/vhost-backend.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/hw/virtio/vhost-backend.h
Add process to handle the configure interrupt, The function's
logic is the same with vq interrupt.Add extra process to check
the configure interrupt
Signed-off-by: Cindy Lu
---
hw/virtio/virtio-pci.c | 110 -
include/hw/virtio/virtio-pci.h | 4 +-
2
Add functions to support configure interrupt.
The configure interrupt process will start in vhost_dev_start
and stop in vhost_dev_stop.
Also add the functions to support vhost_config_pending and
vhost_config_mask.
Signed-off-by: Cindy Lu
---
hw/virtio/vhost.c | 78
To reuse the interrupt process in configure interrupt
Need to decouple the single vector from the interrupt process.
We add new function kvm_virtio_pci_vector_use_one and _release_one.
These functions are used for the single vector, the whole process will
finish in the loop with vq number.
Add configure interrupt support in virtio-mmio bus.
add function to set configure guest notifier.
Signed-off-by: Cindy Lu
---
hw/virtio/virtio-mmio.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index
Add the functions to support the configure interrupt in virtio
The function virtio_config_guest_notifier_read will notify the
guest if there is an configure interrupt.
The function virtio_config_set_guest_notifier_fd_handler is
to set the fd hander for the notifier
Signed-off-by: Cindy Lu
---
To support configure interrupt for vhost-vdpa
Introduce VIRTIO_CONFIG_IRQ_IDX -1 as configure interrupt's queue index,
Then we can reuse the functions guest_notifier_mask and guest_notifier_pending.
Add the check of queue index in these drivers, if the driver does not support
configure interrupt,
Add functions to support configure interrupt in virtio_net
Add the functions to support vhost_net_config_pending
and vhost_net_config_mask.
Signed-off-by: Cindy Lu
---
hw/net/vhost_net.c | 9 +
hw/net/virtio-net.c | 4 ++--
include/net/vhost_net.h | 2 ++
3 files changed, 13
Add new call back function in vhost-vdpa, The function
vhost_set_config_call can set the event fd to kernel.
This function will be called in the vhost_dev_start
and vhost_dev_stop
Signed-off-by: Cindy Lu
---
hw/virtio/trace-events | 1 +
hw/virtio/vhost-vdpa.c | 8
2 files changed, 9
To reuse the notifier process. We add the virtio_pci_get_notifier
to get the notifier and vector. The INPUT for this function is IDX,
The OUTPUT is the notifier and the vector
Signed-off-by: Cindy Lu
---
hw/virtio/virtio-pci.c | 88 +++---
1 file changed, 57
These patches introduced the support for configure interrupt
These codes are tested on x86_64 and aarch64 platforms.
the test scenario is based on vp-vdpa/vdpa_sim /virtio net device, with
the irqfd and without irqfd.
Tested in virtio-pci bus and virtio-mmio bus
Change in v2:
Add support for
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