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[Qemu-devel] [Bug 883136] Re: qemu on ARM hosts aborts on startup becaus
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [Bug 883136] Re: qemu on ARM hosts aborts on startup because makecontext() always fails |
Date: |
Tue, 06 Mar 2012 19:40:47 -0000 |
...and I think that backporting would be a bug against some other
package, not qemu, so we can close this bug.
** Changed in: qemu-linaro
Status: In Progress => Fix Committed
** Changed in: qemu
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/883136
Title:
qemu on ARM hosts aborts on startup because makecontext() always fails
Status in QEMU:
Fix Committed
Status in Linaro QEMU:
Fix Committed
Bug description:
qemu has recently grown a coroutines implementation. There are two
versions, one using the makecontext/setcontext/swapcontext functions
from ucontext.h, and one falling back to implementing coroutines as
separate glib threads. configure chooses the former if the platform
has a makecontext().
Unfortunately ARM eglibc provides a makecontext() which always fails
ENOSYS, which means the configure check passes but when qemu starts it
abort()s.
The best fix for this is probably going to involve making the
coroutine implementation runtime-selectable.
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