[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] Linux kernel polling for QEMU
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] Linux kernel polling for QEMU |
Date: |
Tue, 29 Nov 2016 17:13:27 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 29/11/2016 17:01, Andrew Jones wrote:
> OK, it may be due to scheduling then. Below is the test case (for AArch64)
> Also, I forgot to mention before that I can only see this with TCG, not
> KVM. If ppoll is allowed to timeout, then the test will complete. If not,
> then, as can be seen with strace, the iothread is stuck in ppoll, and the
> test never completes.
>
> #include <asm/smp.h>
> volatile int ready;
> void set_ready(void) {
> ready = 1;
> while(1);
> }
> int main(void) {
> smp_boot_secondary(1, set_ready);
> while (!ready);
> return 0;
> }
Where is the test stuck?
Paolo
- Re: [Qemu-devel] Linux kernel polling for QEMU, (continued)
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Paolo Bonzini, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Paolo Bonzini, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Andrew Jones, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Andrew Jones, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU,
Paolo Bonzini <=
- Re: [Qemu-devel] Linux kernel polling for QEMU, Andrew Jones, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Peter Maydell, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Andrew Jones, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Peter Maydell, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Paolo Bonzini, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Paolo Bonzini, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Stefan Hajnoczi, 2016/11/29
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Stefan Hajnoczi, 2016/11/30
- Re: [Qemu-devel] Linux kernel polling for QEMU, Fam Zheng, 2016/11/30