riscv/qemu - qemu - Gitea: Git with a cup of tea

Commit Graph

Author	SHA1	Message	Date
Stefan Hajnoczi	a3e4b4a809	iohandler: switch to GPollFD Convert iohandler_select_fill() and iohandler_select_poll() to use GPollFD instead of rfds/wfds/xfds. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Message-id: 1361356113-11049-7-git-send-email-stefanha@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	13 years ago
Paolo Bonzini	1de7afc984	misc: move include files to include/qemu/ Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	14 years ago
Paolo Bonzini	737e150e89	block: move include files to include/block/ Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	14 years ago
Paolo Bonzini	f8fe796407	janitor: do not include qemu-char everywhere Touching char/char.h basically causes the whole of QEMU to be rebuilt. Avoid this, it is usually unnecessary. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	14 years ago
Paolo Bonzini	f627aab1cc	aio: introduce AioContext, move bottom halves there Start introducing AioContext, which will let us remove globals from aio.c/async.c, and introduce multiple I/O threads. The bottom half functions now take an additional AioContext argument. A bottom half is created with a specific AioContext that remains the same throughout the lifetime. qemu_bh_new is just a wrapper that uses a global context. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	14 years ago
David Gibson	bbdd2ad081	qemu-char: BUGFIX, don't call FD_ISSET with negative fd tcp_chr_connect(), unlike for example udp_chr_update_read_handler() does not check if the fd it is using is valid (>= 0) before passing it to qemu_set_fd_handler2(). If using e.g. a TCP serial port, which is not initially connected, this can result in -1 being passed to FD_ISSET, which has undefined behaviour. On x86 it seems to harmlessly return 0, but on PowerPC, it causes a fortify buffer overflow error to be thrown. This patch fixes this by putting an extra test in tcp_chr_connect(), and also adds an assert qemu_set_fd_handler2() to catch other such errors on all platforms, rather than just some. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	14 years ago
Alexey Kardashevskiy	55ce75faf2	eventfd: making it thread safe QEMU uses IO handlers to run select() in the main loop. The handlers list is managed by qemu_set_fd_handler() helper which works fine when called from the main thread as it is called when select() is not waiting. However IO handlers list can be changed in the thread other than the main one doing os_host_main_loop_wait(), for example, as a result of a hypercall which changes PCI config space (VFIO on POWER is the case) and enables/disabled MSI/MSIX which closes/creates eventfd handles. As the main loop should be waiting on the newly created eventfds, it has to be restarted. The patch adds the qemu_notify_event() call to interrupt select() to make main_loop() restart select() with the updated IO handlers list. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	14 years ago
Stefan Weil	c97feed13c	iohandler: Use bool for boolean struct member and remove holes Using bool reduces the size of the structure and improves readability. Two holes in the structure were removed. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>	14 years ago
Paolo Bonzini	be08e65e01	Revert to a hand-made select loop This reverts commit `c82dc29a91` and `4d88a2ac86`. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	15 years ago
Paolo Bonzini	44a9b356ad	main-loop: create main-loop.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>	15 years ago
Anthony Liguori	c82dc29a91	iohandlers: fix issue with qemu_set_fd_handler() As spotted by Aneesh, some users pass a NULL opaque so we need to be more aggressive in checking whether a user means to unregister. Also fix a double free caused by tag not being reset to zero after delete. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	15 years ago
Anthony Liguori	4d88a2ac86	main: switch qemu_set_fd_handler to g_io_add_watch This patch changes qemu_set_fd_handler to be implemented in terms of g_io_add_watch(). The semantics are a bit different so some glue is required. qemu_set_fd_handler2 is much harder to convert because of its use of polling. The glib main loop has the major of advantage of having a proven thread safe architecture. By using the glib main loop instead of our own, it will allow us to eventually introduce multiple I/O threads. I'm pretty sure that this will work on Win32, but I would appreciate some help testing. I think the semantics of g_io_channel_unix_new() are really just tied to the notion of a "unix fd" and not necessarily unix itself. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	15 years ago
Anthony Liguori	7267c0947d	Use glib memory allocation and free functions qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	15 years ago
Paolo Bonzini	4d54ec7898	add a service to reap zombies, use it in SLIRP SLIRP -smb support wants to fork a process and forget about reaping it. To please it, add a generic service to register a process id and let QEMU reap it. In the future it could be enhanced to pass a status, but this would be unused. With this in place, the SIGCHLD signal handler would not stomp on pclose anymore. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	15 years ago
Paolo Bonzini	0298141998	extract I/O handler lists to iohandler.c Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>	15 years ago

15 Commits (dfb3804d478bce02350bdf87534dc7dd3d1ded51)