This PR support Nested interrupt in armv6/7/8m:
There are two types of nested interrupt model:
Zero latency nested interrupt
Interrupt Priority Note
Data abort Highest
SVC 0x50
High irq1 0x60 ISR can't access system API
irq_save() 0x70
High irq2 0x80 ISR can't access system API
normal irq3 0xB0
We have already support this mode before this PR
Nested interrupt which interrupt level lower than up_irq_save()
Interrupt Priority Note
Data abort Highest
SVC 0x70
irq_save() 0x80
High irq1 0x90 ISR can access system API
High irq2 0xA0 ISR can access system API
normal irq3 0xB0
Now, this PR can support this mode
Signed-off-by: ligd <liguiding1@xiaomi.com>
reason:
In the kernel, we are planning to remove all occurrences of up_cpu_pause as one of the steps to
simplify the implementation of critical sections. The goal is to enable spin_lock_irqsave to encapsulate critical sections,
thereby facilitating the replacement of critical sections(big lock) with smaller spin_lock_irqsave(small lock)
Signed-off-by: hujun5 <hujun5@xiaomi.com>
reason:
In the kernel, we are planning to remove all occurrences of up_cpu_pause as one of the steps to
simplify the implementation of critical sections. The goal is to enable spin_lock_irqsave to encapsulate critical sections,
thereby facilitating the replacement of critical sections(big lock) with smaller spin_lock_irqsave(small lock)
Configuring NuttX and compile:
$ ./tools/configure.sh -l qemu-armv8a:nsh_smp
$ make
Running with qemu
$ qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic
-machine virt,virtualization=on,gic-version=3
-net none -chardev stdio,id=con,mux=on -serial chardev:con
-mon chardev=con,mode=readline -kernel ./nuttx
Signed-off-by: hujun5 <hujun5@xiaomi.com>
reason:
In the kernel, we are planning to remove all occurrences of up_cpu_pause as one of the steps to
simplify the implementation of critical sections. The goal is to enable spin_lock_irqsave to encapsulate critical sections,
thereby facilitating the replacement of critical sections(big lock) with smaller spin_lock_irqsave(small lock)
Configuring NuttX and compile:
$ ./tools/configure.sh -l qemu-armv8a:nsh_smp
$ make
Running with qemu
$ qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic
-machine virt,virtualization=on,gic-version=3
-net none -chardev stdio,id=con,mux=on -serial chardev:con
-mon chardev=con,mode=readline -kernel ./nuttx
Signed-off-by: hujun5 <hujun5@xiaomi.com>
To avoid the following CI error:
This environment is externally managed
--> To install Python packages system-wide, try apt install
python3-xyz, where xyz is the package you are trying to
install.
If you wish to install a non-Debian-packaged Python package,
create a virtual environment using python3 -m venv path/to/venv.
Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
sure you have python3-full installed.
If you wish to install a non-Debian packaged Python application,
it may be easiest to use pipx install xyz, which will manage a
virtual environment for you. Make sure you have pipx installed.
See /usr/share/doc/python3.12/README.venv for more information.
Config multi line output to mode 3, so isort and black can agree with
each other:
```
3 - Vertical Hanging Indent
from third_party import (
lib1,
lib2,
lib3,
lib4,
)
```
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
Use address addition and subtraction, no longer as the return value of the address. Tags must be removed before calculation
Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
1. extract dump from assert main flow
2. use OSINIT_PANIC for fatal error.
3. fix the method to judge kernel thread.
Signed-off-by: xuxingliang <xuxingliang@xiaomi.com>
reason:
In the kernel, we are planning to remove all occurrences of up_cpu_pause as one of the steps to
simplify the implementation of critical sections. The goal is to enable spin_lock_irqsave to encapsulate critical sections,
thereby facilitating the replacement of critical sections(big lock) with smaller spin_lock_irqsave(small lock)
Configuring NuttX and compile:
$ ./tools/configure.sh -l qemu-armv8a:nsh_smp
$ make
Running with qemu
$ qemu-system-aarch64 -cpu cortex-a53 -smp 4 -nographic
-machine virt,virtualization=on,gic-version=3
-net none -chardev stdio,id=con,mux=on -serial chardev:con
-mon chardev=con,mode=readline -kernel ./nuttx
Signed-off-by: hujun5 <hujun5@xiaomi.com>
reason:
To remove the "sync pause" and decouple the critical section from the dependency on enabling interrupts,
after that we need to further implement "schedlock + spinlock".
changelist
1 Modify the implementation of critical sections to no longer involve enabling interrupts or handling synchronous pause events.
2 GIC_SMP_CPUCALL attach to pause handler to remove arch interface up_cpu_paused_restore up_cpu_paused_save
3 Completely remove up_cpu_pause, up_cpu_resume, up_cpu_paused, and up_cpu_pausereq
4 change up_cpu_pause_async to up_send_cpu_sgi
Signed-off-by: hujun5 <hujun5@xiaomi.com>
reason:
In x86_64, g_current_regs is still used for context switching.
This commit fixes the regression from https://github.com/apache/nuttx/pull/13616
Signed-off-by: hujun5 <hujun5@xiaomi.com>
1.nxsem_post wake up nxsched_smp_call;
2.stack smp_call_data_s may return;
3.nxsched_smp_call_handler access call_data->lock is not safety;
so adjust the unlock order
Signed-off-by: dulibo1 <dulibo1@xiaomi.com>
signal handler stack must be properly aligned, otherwise vector instructions doesn't work in signal handler
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
move initial RSP for AP cores below regs area.
otherwise IDLE thread for AP cores can be corrupted
XCP region now match regs allocation in up_initial_state()
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
As the handling of sp_el0 was moved from the context switch routine
to exception entry/exit, we must set sp_el0 explicitly when the user
process is first started.
