summaryrefslogtreecommitdiff
path: root/vl.c
AgeCommit message (Collapse)AuthorFilesLines
2009-01-24target-ppc: change the default RAM size to 128MB like other targetsaurel321-4/+0
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6418 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22Stop VM on error in virtio-blk. (Gleb Natapov)aliguori1-1/+1
Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6410 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22Stop VM on error in scsi-disk (Gleb Natapov)aliguori1-2/+2
Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6409 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22Rework vm_state_change notifiers (Jan Kiszka)aliguori1-25/+4
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6402 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-22Fix build with --disable-sdlaliguori1-1/+2
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6393 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-21Fix nographic mode and VNCblueswir11-0/+13
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6391 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-21Stop VM on ENOSPC error. (Gleb Natapov)aliguori1-2/+35
This version of the patch adds new option "werror" to -drive flag. Possible values are: report - report errors to a guest as IO errors ignore - continue as if nothing happened stop - stop VM on any error and retry last command on resume enospc - stop vm on ENOSPC error and retry last command on resume all other errors are reported to a guest. Default is "report" to maintain current behaviour. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6388 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-21Adds null check for DisplayStatus (Stefano Stabellini)aliguori1-0/+5
Allocate a DisplaySurface in dumb_display_init if none else does it. The DisplaySurface will be used for the qemu monitor, serial and parallel ports, etc. Signed-off-by: Andrew May <acmay@acmay.homeip.net> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6387 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-19Remove dumb_display (Stefan Stabellini)aliguori1-22/+5
However I think the following fix is cleaner: we do not need a dumb_display_init that creates an empty DisplayChangeListener any more. We do need a dumb_display_init that allocates a zeroed DisplayState structure if none else does it. Tested-by: Shin-ichiro KAWASAKI <kawasaki@juno.dti.ne.jp> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6369 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-18add an init function parameter to qemu_chr_open()aurel321-4/+4
And use it for the malta emulation. Fix segfault introduced in revision 6352. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6365 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-16Make sure monitor appears as a vcaliguori1-8/+10
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6358 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-16Fix character devices after DisplayState refactoringaliguori1-19/+45
The DisplayState refactoring changed the machine init function to create a DisplayState for each VGA device instead of being passed an existing DisplayState. This change is critical to enable multiple graphics device support. Unfortunately, the serial/parallel/console code is structured today to run before machine init to fill out the CharDriverState table which the machine init function uses to determine whether to create the required devices. Since a 'vc' is a type of CharDriverState, the CharDriverState code requires that a DisplayState exist before it runs creating a circular dependency. To fix this, this splits the creation of the initial CharDriverState from the initialization of the text console. We can then in a second step associate a DisplayState with all TextConsoles. This allows us to create the CharDriverState's first, machine init, then associate the TextConsoles with a DisplayState. This code screams for more cleanup. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6352 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-16graphical_console_init change (Stefano Stabellini)aliguori1-62/+82
Patch 5/7 This patch changes the graphical_console_init function to return an allocated DisplayState instead of a QEMUConsole. This patch contains just the graphical_console_init change and few other modifications mainly in console.c and vl.c. It was necessary to move the display frontends (e.g. sdl and vnc) initialization after machine->init in vl.c. This patch does *not* include any required changes to any device, these changes come with the following patches. Patch 6/7 This patch changes the QEMUMachine init functions not to take a DisplayState as an argument because is not needed any more; In few places the graphic hardware initialization function was called only if DisplayState was not NULL, now they are always called. Apart from these cases, the rest are all mechanical substitutions. Patch 7/7 This patch updates the graphic device code to use the new graphical_console_init function. As for the previous patch, in few places graphical_console_init was called only if DisplayState was not NULL, now it is always called. Apart from these cases, the rest are all mechanical substitutions. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6344 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15Convert references to logfile/loglevel to use qemu_log*() macrosaliguori1-4/+1
This is a large patch that changes all occurrences of logfile/loglevel global variables to use the new qemu_log*() macros. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6338 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15DisplayState interface change (Stefano Stabellini)aliguori1-32/+55
This patch changes the DisplayState interface adding support for multiple frontends at the same time (sdl and vnc) and implements most of the benefit of the shared_buf patch without the added complexity. Currently DisplayState is managed by sdl (or vnc) and sdl (or vnc) is also responsible for allocating the data and setting the depth. Vga.c (or another backend) will do any necessary conversion. The idea is to change it so that is vga.c (or another backend) together with console.c that fully manage the DisplayState interface allocating data and setting the depth (either 16 or 32 bit, if the guest uses a different resolution or is in text mode, vga.c (or another backend) is in charge of doing the conversion seamlessly). The other idea is that DisplayState supports *multiple* frontends like sdl and vnc; each of them can register some callbacks to be called when a display event occurs. The interesting changes are: - the new structures and related functions in console.h and console.c in particular the following functions are very helpful to manage a DisplaySurface: qemu_create_displaysurface qemu_resize_displaysurface qemu_create_displaysurface_from qemu_free_displaysurface - console_select and qemu_console_resize in console.c this two functions manage multiple consoles on a single host display - moving code around in hw/vga.c as for the shared_buf patch this is necessary to be able to handle a dynamic DisplaySurface bpp - changes to vga_draw_graphic in hw/vga.c this is the place where the DisplaySurface buffer is shared with the videoram, when possible; Compared to the last version the only changes are: - do not remove support to dpy_copy in cirrus_vga - change the name of the displaysurface handling functions Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6336 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15Clean up debugging code #ifdefs (Eduardo Habkost)aliguori1-24/+16
Use macros to avoid #ifdefs on debugging code. This patch doesn't try to merge logging macros from different files, but just unify the debugging code #ifdefs onto a macro on each file. A further cleanup can unify the debugging macros on a common header, later Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6332 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15add a -vga none cli option (Stefano Stabellini)aliguori1-1/+9
currently there is no way to fully disable any graphic card device for the PC architecture. You can have no graphical output, thanks to -nographic, but you would have the VGA device connected to your PCI bus anyway. There is already a convenient -vga option to choose between std, cirrus and vmware; this patch add the new option "none" to select no graphic card at all. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6322 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15Add -rtc-td-hack option to fix time drift with RTC on Windows (Gleb Natapov)aliguori1-0/+7
After my last patch to fix interrupt coalescing was rejected on the basis that it is too intrusive we decided to make the fix much more localized and only fix the problem for RTC time source. Unfortunately it is impossible to fix the problem entirely inside RTC code like Andrzej proposed since Windows reads RTC register C more then once on each time interrupt so it is impossible to count reliably how many interrupt windows actually handled. Proposed solution is localized to I386 target and is disabled by default. To enable it "-rtc-td-hack" flag should be used. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6320 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15add virtio-console cmdline option (Christian Ehrhardt)aliguori1-0/+10
This patch adds the typical qemu console command line switch to the virtio console. using -virtioconsole ARG it can now be specified what output a guest hvc should be redirected to. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6317 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15add virtio-console support (Christian Ehrhardt)aliguori1-0/+26
This patch adds the virtio console to qemu. This console can be found after the serial and parallel outputs as another virtual console. In the -nographic case it is redirected to the null output by default. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6315 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-09More flexible audio card selectionmalc1-0/+8
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6258 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-08Enable ac97 by defaultaliguori1-2/+0
ac97 has drivers for Vista 64-bit whereas sb16 and es1370 do not appear to. I asked malc why it was disabled and he said it was because it was GPL. He did not object to enabling it now that more QEMU code is GPL'd. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6253 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-07Add a -net name=foo parameter (Mark McLoughlin)aliguori1-7/+7
Allow the user to supply a vlan client name on the command line. This is probably only useful for management tools so that they can use their own names rather than parsing the output of 'info network'. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6220 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-07add "serial" parameter to -drive flag (Gleb Natapov)aliguori1-2/+18
Windows calculates HW "uniqueness" based on a hard drive serial number among other things. The patch allows to specify drive serial number from a command line. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6214 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-24Add support for -prom-env command line optionsblueswir11-3/+3
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6129 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-22Use the ARRAY_SIZE() macro where appropriate.malc1-1/+1
Change from v1: Avoid changing the existing coding style in certain files. Signed-off-by: Stuart Brady <stuart.brady@gmail.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6120 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-18consolidate definition for tap script and smb supportaurel321-8/+0
Since the introduction of net.c in r5581 there had been 2 places where the location of the TAP helper scripts and SMB daemon are defined. The following patch move those definitions to net.h so they are accessible for net.c and vl.c but defined only once (Carlo Marcelo Arenas Belon) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6093 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-17Add HPET emulation to qemu (Beth Kon)aliguori1-0/+7
This patch adds HPET emulation. It can be disabled with -disable-hpet. An hpet provides a more finely granular clocksource than otherwise available on PC. This means that latency-dependent applications (e.g. multimedia) will generally be smoother when using the HPET. Signed-off-by: Beth Kon <eak@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6081 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-15kvm: sync vcpu state during initialization (Hollis Blanchard)aliguori1-0/+11
Currently on x86, qemu initializes CPUState but KVM ignores it and does its own vcpu initialization. However, PowerPC KVM needs to be able to set the initial register state to support the -kernel and -append options. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6060 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-10Introduce and use cache-utils.[ch]malc1-1/+4
Thanks to Segher Boessenkool and Holis Blanchard. AIX and Darwin cache inquiry: http://gcc.gnu.org/ml/gcc-patches/2007-08/msg00388.html Auxiliary vectors: http://manugarg.googlepages.com/aboutelfauxiliaryvectors git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5973 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-07Fix some new warnings introduced after r5022blueswir11-2/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5933 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-04Use writeback caching by default with qcow2aliguori1-1/+3
qcow2 writes a cluster reference count on every cluster update. This causes performance to crater when using anything but cache=writeback. This is most noticeable when using savevm. Right now, qcow2 isn't a reliable format regardless of the type of cache your using because metadata is not updated in the correct order. Considering this, I think it's somewhat reasonable to use writeback caching by default with qcow2 files. It at least avoids the massive performance regression for users until we sort out the issues in qcow2. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5879 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-04Add ballooning infrastructure.aliguori1-0/+26
Balloon devices allow you to ask the guest to allocate memory. This allows you to release that memory. It's mostly useful for freeing up large chunks of memory from cooperative guests. Ballooning is supported by both Xen and VirtIO. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5873 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-04Add virtio-blk supportaliguori1-1/+5
Virtio-blk is a paravirtual block device based on VirtIO. It can be used by specifying the if=virtio parameter to the -drive parameter. When using -enable-kvm, it can achieve very good performance compared to IDE or SCSI. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5870 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-25Revert r5636 to fix icount on hosts w/o high-res clocksaliguori1-9/+9
Changeset r5636 changed the timers to run in the alarm callback. The alarm callback can only be called as frequently as the host alarm timer fires. For older Linux hosts and possibly non-Linux hosts, this can be as high as a 1ms granularity. icount calculates the select timeout based on the next deadline and select is usually capable of sleeping for a short period of time than alarm timer granularity. This means that changing the timer callbacks to be based on alarm firing caused timers to fire much later than they ought to when using icount. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5796 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18gdbstub: manage CPUs as threads (Jan Kiszka)aliguori1-0/+1
This patch enhances QEMU's built-in debugger for SMP guest debugging. Using the thread support of the gdb remote protocol, each VCPU is mapped on a pseudo thread and exposed to the gdb frontend. This way you can easy switch the focus of gdb between the VCPUs and observe their states. On breakpoint hit, the focus is automatically adjusted just as for normal multi-threaded application under gdb control. Furthermore, the patch propagates breakpoint and watchpoint insertions or removals to all CPUs, not just the current one as it was the case so far. Without this, SMP guest debugging was practically unfeasible. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5743 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-16Fix warnings caused by timer_t, it is 32 bits on Sparc64blueswir11-3/+3
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5725 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-16Fix no_frame unused warning when SDL is disabledblueswir11-0/+2
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5724 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11Split savevm code into savevm.caliguori1-1156/+0
This is pure code motion. The savevm code is all common code so we can build it once and share the object with all executables. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5700 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11Reintroduce migrate-to-exec: support (Charles Duffy)aliguori1-0/+64
KVM's live migration support included support for exec: URLs, allowing system state to be written or received via an arbitrary popen()ed subprocess. This provides a convenient way to pipe state through a compression algorithm or an arbitrary network transport on its way to its destination, and a convenient way to write state to disk; libvirt's qemu driver currently uses migration to exec: targets for this latter purpose. This version of the patch refactors now-common code from migrate-tcp.c into migrate.c. Signed-off-by: Charles Duffy <Charles_Duffy@messageone.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5694 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11Revert commits 5685 to 5688 committed by mistakeaurel321-1/+1
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5691 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11qemu: generate signals on tap I/Oaurel321-1/+1
Currently tap does not generate signals on I/O; this causes network latency to be dependent on the timer tick (1ms without dyntick, guest dependent with dyntick). By generating a signal on I/O, we can inform the guest immediately that a packet has arrived. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5688 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-09Add the -bt switch for setting up bluetooth stuff.balrog1-2/+172
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5652 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-07Fix some build issues for BSD.blueswir11-7/+12
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5646 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Fix windows build after init_host_timer changes.aliguori1-30/+41
host_alarm_timer fires in a separate thread. The windows build current uses SetEvent() and WaitEvent() to then notify the main thread. This is functionally equivalent to what we're doing in Unix with pipe(). So let's just #ifdef the pipe() code on Windows since it doesn't build there anyway. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5637 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Run timers from host alarm timer callbackaliguori1-10/+9
This further cleans up the main loop getting it a lot closer to what a main loop should be. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5636 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Use qemu_set_fd_handler2() to determine when alarm timer fires.aliguori1-13/+22
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5635 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Improve error reporting in init_timer_alarmaliguori1-16/+42
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5634 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Fix alarm_timer race with select - v3 (Jan Kiszka)aliguori1-2/+26
Changing the default IO timeout to 5 s (#5578) made a race visible between the alarm_timer and select() in main_loop_wait(): If the timer fired before select was able to block, the full select() timeout could have been applied instead of returning immediately. Since #5578, this causes heavy problems to the Musicpal board emulation with stalls up to 5 s, but also with some older Linux guest kernels. The following patch introduces a pipe that is written to by host_alarm_handler and select()'ed in main_loop_wait(). This avoids prevents that select() blocks though a timer has fired and waits for processing. Signed-off-by: Jan Kiszka <jan.kiszka@web.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5633 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Add KVM support to QEMUaliguori1-0/+34
This patch adds very basic KVM support. KVM is a kernel module for Linux that allows userspace programs to make use of hardware virtualization support. It current supports x86 hardware virtualization using Intel VT-x or AMD-V. It also supports IA64 VT-i, PPC 440, and S390. This patch only implements the bare minimum support to get a guest booting. It has very little impact the rest of QEMU and attempts to integrate nicely with the rest of QEMU. Even though this implementation is basic, it is significantly faster than TCG. Booting and shutting down a Linux guest: w/TCG: 1:32.36 elapsed 84% CPU w/KVM: 0:31.14 elapsed 59% CPU Right now, KVM is disabled by default and must be explicitly enabled with -enable-kvm. We can enable it by default later when we have had better testing. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5627 c046a42c-6fe2-441c-8c8c-71466251a162
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 15:10:26 +0000