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Upstream has no compatfd.[ch], so move the code to the most similar
place.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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Fix build when !CONFIG_EVENTFD
CC compatfd.o
compatfd.c: In function ‘qemu_eventfd’:
compatfd.c:137: error: ‘ret’ undeclared (first use in this function)
compatfd.c:137: error: (Each undeclared identifier is reported only once
compatfd.c:137: error: for each function it appears in.)
make: *** [compatfd.o] Error 1
Signed-off-by: Chris Wright <chrisw@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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* commit '40ff6d7e8dceca227e7f8a3e8e0d58b2c66d19b4':
Don't leak file descriptors
qemu-img: There is more than one host device driver
qcow2: Fix some more qemu_malloc fallout
qcow2: Store exact backing format length
virtio-blk: Implement rerror option
ide: Implement rerror option
Conflicts:
posix-aio-compat.c
Extended qemu_set_cloexec() to compatfd.c.
Signed-off-by: Avi Kivity <avi@redhat.com>
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(there was a missmerge with need_offset)
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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s/CONFIG_signalfd/CONFIG_signalfd/
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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qemu_eventfd() returns two file descriptors, both of which
must be closed when pipe() is used in the absence of eventfd().
Duplicate the eventfd() file descriptor so that closing
both descriptors will work in that case.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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Replace signalfd with signal handler/pipe. There is no way to interrupt
the CPU execution loop when a file descriptor becomes readable. This
results in a large performance regression in sparc emulation during
bootup.
This patch switches us to signal handler/pipe which was originally
suggested by Ian Jackson. The signal handler lets us interrupt the
CPU emulation loop while the write to a pipe lets us avoid the
select/signal race condition.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5451 c046a42c-6fe2-441c-8c8c-71466251a162
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Be more friendly when signalfd() fails, and also add configure checks to detect
that syscall(SYS_signalfd) actually works. malc pointed out that some installs
do not have /usr/include/linux headers that are in sync with the glibc headers
so why SYS_signalfd is defined, it's #defined to _NR_signalfd which is not
defined in the /usr/include/linux header.
While this is a distro bug, it doesn't hurt to do a more thorough job in
detection.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5334 c046a42c-6fe2-441c-8c8c-71466251a162
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Spotted by malc.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5333 c046a42c-6fe2-441c-8c8c-71466251a162
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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5188 c046a42c-6fe2-441c-8c8c-71466251a162
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