Re: AMD64 arch

pment forward. I do really think that Brennan's work should be the "true" solution to PCI devices. -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン)

Re: Problem booting when using Nuttx on Qemu x86_64

/ 16GB - Custom compiled kernel: - Linux rtlab-linux 5.4.39-rt23+ #1 SMP PREEMPT_RT Mon May 11 22:10:55 JST 2020 x86_64 x86_64 x86_64 GNU/Linux - Custom compiled Qemu: - QEMU emulator version 4.2.0 (v4.2.0-dirty) BR, -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン)

Re: Problem booting when using Nuttx on Qemu x86_64

In addition, may I have your processor model please. The Intel processors feature set varys quite a lot. Maybe some feature settings are considered improper for your processor, causing a GP. BR, -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン)

Re: Problem booting when using Nuttx on Qemu x86_64

u[0] and gcc[1] shipped with Debian Bullseye (testing). These shouldn't be an issue. I have seen aliked looping problem during porting, mainly due to improperly setup GPT causing GP or page table causing PF. I suppose you didn't modify the code, therefore it seems strange to me. BR, -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン)

Re: Duplicate task_spawn()

erred fix would simply to make CONFIG_LIB_SYSCALL > dependent on !CONFIG_BUILD_FLAT in the Kconfig file. > > -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン) Member of Softlab, Tsukuba University , Japan Email: sonic.tw...@gmail.com

Duplicate task_spawn()

Hi, Did anyone also noticed that when building with CONFIG_LIB_SYSCALL=y, the linker is unhappy about the duplicated task_spawn() symbols? One of them is in sched/ and other one is in libs/libc. -- Yang

Re: intel64

2020年5月18日(月) 14:47 Brennan Ashton : > > On Sun, May 17, 2020, 10:36 PM Takashi Yamamoto > wrote: > > > hi, > > > > this is just a curious question. > > why do we use the name "intel64" for qemu things? > > i thought it was from qemu, but qemu seems to use x86_64 or amd64. > > i think "amd64" is m

Re: Possibility of nested signals.

register profile as again sigdeliver. The original RIP saved in TCB is overwritten and destroyed. Currently, by removing any possibility voluntary schedule point in the critical section, this problem no longer exists. -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン) Member of Softlab, Tsukuba University , Ja

Possibility of nested signals.

tched in task might send a second signal to the task A. In such case, the saved instruction pointer value in the TCB might get overwritten, causing a consecutive incorrect execution path when returning tho the previous signal. Am I correct or did I missed something here? -- Yang Chung Fan (楊宗凡) (

Re: A x86-64 port of nuttx with Linux compatibility layer

oader after these are properly done. Yang -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン) Member of Softlab, Tsukuba University , Japan Email: sonic.tw...@gmail.com

A x86-64 port of nuttx with Linux compatibility layer

existing Linux real-time solutions while not losing the compatibility with Linux. -- Yang Chung Fan (楊宗凡) (ヤン　ゾン　ファン) Member of Softlab, Tsukuba University , Japan Email: sonic.tw...@gmail.com