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2010-02-22Add cpu model configuration support..john cooper1-0/+49
This is a reimplementation of prior versions which adds the ability to define cpu models for contemporary processors. The added models are likewise selected via -cpu <name>, and are intended to displace the existing convention of "-cpu qemu64" augmented with a series of feature flags. A primary motivation was determination of a least common denominator within a given processor class to simplify guest migration. It is still possible to modify an arbitrary model via additional feature flags however the goal here was to make doing so unnecessary in typical usage. The other consideration was providing models names reflective of current processors. Both AMD and Intel have reviewed the models in terms of balancing generality of migration vs. excessive feature downgrade relative to released silicon. This version of the patch replaces the prior hard wired definitions with a configuration file approach for new models. Existing models are thus far left as-is but may easily be transitioned to (or may be overridden by) the configuration file representation. Proposed new model definitions are provided here for current AMD and Intel processors. Each model consists of a name used to select it on the command line (-cpu <name>), and a model_id which corresponds to a least common denominator commercial instance of the processor class. A table of names/model_ids may be queried via "-cpu ?model": : x86 Opteron_G3 AMD Opteron 23xx (Gen 3 Class Opteron) x86 Opteron_G2 AMD Opteron 22xx (Gen 2 Class Opteron) x86 Opteron_G1 AMD Opteron 240 (Gen 1 Class Opteron) x86 Nehalem Intel Core i7 9xx (Nehalem Class Core i7) x86 Penryn Intel Core 2 Duo P9xxx (Penryn Class Core 2) x86 Conroe Intel Celeron_4x0 (Conroe/Merom Class Core 2) : Also added is "-cpu ?dump" which exhaustively outputs all config data for all defined models, and "-cpu ?cpuid" which enumerates all qemu recognized CPUID feature flags. The pseudo cpuid flag 'check' when added to the feature flag list will warn when feature flags (either implicit in a cpu model or explicit on the command line) would have otherwise been quietly unavailable to a guest: # qemu-system-x86_64 ... -cpu Nehalem,check warning: host cpuid 0000_0001 lacks requested flag 'sse4.2|sse4_2' [0x00100000] warning: host cpuid 0000_0001 lacks requested flag 'popcnt' [0x00800000] A similar 'enforce' pseudo flag exists which in addition to the above causes qemu to error exit if requested flags are unavailable. Configuration data for a cpu model resides in the target config file which by default will be installed as: /usr/local/etc/qemu/target-<arch>.conf The format of this file should be self explanatory given the definitions for the above six models and essentially mimics the structure of the static x86_def_t x86_defs. Encoding of cpuid flags names now allows aliases for both the configuration file and the command line which reconciles some Intel/AMD/Linux/Qemu naming differences. This patch was tested relative to qemu.git. Signed-off-by: john cooper <john.cooper@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12rework -monitor handling, switch to QemuOptsGerd Hoffmann1-0/+19
This patch reworks the -monitor handling: - It adds a new "mon" QemuOpts list for the monitor(s). - It adds a monitor_parse() function to parse the -monitor switch. - It adds a mon_init function to initialize the monitor(s) from the "mon" QemuOpts list. - It winds up everything and removes the old bits. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12qdev: add command line option to set global defaults for properties.Gerd Hoffmann1-0/+56
This patch adds infrastructure and command line option for setting global defaults for device properties, i.e. you can for example use -global virtio-blk-pci.vectors=0 to turn off msi by default for all virtio block devices. The config file syntax is: [global] driver = "virtio-blk-pci" property = "vectors" value = "0" This can also be used to set properties for devices which are not created via -device but implicitly via machine init, i.e. -global isa-fdc,driveA=<name> This patch uses the mechanism which configures properties for the compatibility machine types (pc-0.10 & friends). The command line takes precedence over the machine type values. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03Introduce rerror option for drivesKevin Wolf1-0/+3
rerror controls the action to be taken when an error occurs while accessing the guest image file. It corresponds to werror which already controls the action take for write errors. This purely introduces parsing rerror command line option into the right structures, real support for it in the device emulation is added in the following patches. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09QemuOpts: parse config from file.Gerd Hoffmann1-0/+50
Add functions to parse QemuOpts from a git-style config file. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09QemuOpts: dump config.Gerd Hoffmann1-0/+39
Add a function to write the QemuOpts configuration to a git-style config file. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09QemuOpts: add find_list()Gerd Hoffmann1-9/+20
Factor out the QemuOptsList search code for upcoming users. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09Added readonly flag to -drive commandNaphtali Sprei1-0/+3
This is a slightly revised patch for adding readonly flag to the -drive command. Even though this patch is "stand-alone", it assumes a previous related patch (in Anthony staging tree), that passes the readonly attribute of the drive to the guest OS, applied first. This enables sharing same image between guests, with readonly access. Implementaion mark the drive as read_only and changes the flags when actually opening the file. The readonly attribute of a qcow also passed to it's base file. For ide that cannot pass the readonly attribute to the guest OS, disallow the readonly flag. Also, return error code from bdrv_truncate for readonly drive. Signed-off-by: Naphtali Sprei <nsprei@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Add chardev option to disable signal.Kusanagi Kouichi1-0/+3
If I am using vga and serial which is stdio and hit C-c on serial console, qemu terminates. That is annoying for me. So make it configurable whether signal is generated when C-c is hit. Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: add -netdev optionMark McLoughlin1-0/+13
Patchworks-ID: 35506 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Add qemu_net_optsMark McLoughlin1-0/+13
The first step in porting -net to QemuOpts. We do not include parameter descriptions in the QemuOptsList because we use the first parameter to choose which descriptions validate against. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Remove double error message in qemu_option_set()Mark McLoughlin1-2/+0
qemu_opt_set() prints an error message in all failure cases, so qemu_set_option() doesn't need to print another error. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Register rtc options for -setJan Kiszka1-0/+1
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05switch qemu-config to qemu_errorGerd Hoffmann1-4/+5
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05Enable host-clock-based RTCJan Kiszka1-0/+3
Switch RTC emulations to the new host_clock instead of vm_clock by default. This has the advantage that the emulated RTC will follow automatically the host time while it might be tuned via NTP. vm_clock can still be selected by passing '-rtc clock=vm' on the command line. Note that some RTC emulations (at least M48T59) already use the host time unconditionally while others (namely MC146818) do not. This patch introduces the required infrastructure for selecting the base clock but only converts MC146818 for now. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05Refactor RTC command line switchesJan Kiszka1-0/+17
Deprecate -localtime, -setdate and -rtc-td-hack in favor of a new unified command line switch: -rtc [base=utc|localtime|date][,driftfix=none|slew] Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-25Fix coding style issueMark McLoughlin1-1/+1
Replace: if (-1 == foo()) with: if (foo() == -1) While this coding style is not in direct contravention of our currently ratified CODING_STYLE treaty, it could be argued that the Article 3 of the European Convention on Human Rights (prohibiting torture and "inhuman or degrading treatment") reads on the matter. [This commit message was brought to you without humour, as is evidenced by the absence of any emoticons] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Cc: Avi Kivity <avi@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12Fix sys-queue.h conflict for goodBlue Swirl1-3/+3
Problem: Our file sys-queue.h is a copy of the BSD file, but there are some additions and it's not entirely compatible. Because of that, there have been conflicts with system headers on BSD systems. Some hacks have been introduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896, f40d753718c72693c5f520f0d9899f6e50395e94, 96555a96d724016e13190b28cffa3bc929ac60dc and 3990d09adf4463eca200ad964cc55643c33feb50 but the fixes were fragile. Solution: Avoid the conflict entirely by renaming the functions and the file. Revert the previous hacks. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-11Allow -serial chardev:<name>Gerd Hoffmann1-0/+3
Lets put -chardev into use now. With this patch applied chardev:name is accepted as chardev specification everywhere, i.e. now you can: -chardev stdio,id=ttyS0 -serial chardev:ttyS0 which does the same as '-serial stdio". Muxing can be done this way: -chardev stdio,id=mux,mux=on -serial chardev:mux -monitor chardev:mux You can mux more than two streams. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11convert udp chardev to QemuOpts.Gerd Hoffmann1-0/+6
While being at it: create a new inet_dgram_opts() function for udp setup, so udp can handle IPv6 now. new cmd line syntax: -chardev udp,id=name,host=remotehost,port=remoteport,\ localaddr=bindaddr,localport=bindport Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11convert vc chardev to QemuOpts.Gerd Hoffmann1-0/+12
new cmd line syntax: -chardev vc,id=name -chardev vc,id=name,width=pixels,height=pixels -chardev vc,id=name,cols=chars,rows=chars Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11convert unix+tcp chardevs to QemuOpts.Gerd Hoffmann1-0/+27
new cmd line syntax: unix socket: -chardev socket,id=name,path=/path/to/socket tcp socket: -chardev socket,id=name,host=hostaddr|ipaddr,port=portnr server and nowait options work as usual. Alternatively you can use server=[on|off] + wait=[on|off] syntax. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11convert file+pipe chardevs to QemuOpts.Gerd Hoffmann1-0/+7
new cmd line syntax: -chardev file,id=name,path=/path/to/file -chardev pipe,id=name,path=/path/to/pipe Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11switch chardev to QemuOpts: infrastructure, null deviceGerd Hoffmann1-0/+9
start switching chardevs to QemuOpts. This patch adds the infrastructure and converts the null device. The patch brings two new functions: qemu_chr_open_opts() same as qemu_chr_open(), but uses QemuOpts instead of a option char string. qemu_chr_parse_compat() accepts a traditional chardev option string, returns the corresponding QemuOpts instance, to handle backward compatibility. The patch also adds a new -chardev switch which can be used to create named+unconnected chardevs, like this: -chardev null,id=test This uses the new qemu_chr_open_opts. Thus with this patch alone only the null device works. The other devices will follow ... Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27raw-posix: add Linux native AIO supportChristoph Hellwig1-0/+4
Now that do have a nicer interface to work against we can add Linux native AIO support. It's an extremly thing layer just setting up an iocb for the io_submit system call in the submission path, and registering an eventfd with the qemu poll handler to do complete the iocbs directly from there. This started out based on Anthony's earlier AIO patch, but after estimated 42,000 rewrites and just as many build system changes there's not much left of it. To enable native kernel aio use the aio=native sub-command on the drive command line. I have also added an option to qemu-io to test the aio support without needing a guest. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-10QemuOpts: switch over -device.Gerd Hoffmann1-0/+14
Make -device switch use the QemuOpts framework. Everything should continue to work like it did before. New: "-set device.$id.$property=$value" works. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-Id:
2009-08-10QemuOpts: add -set optionGerd Hoffmann1-0/+41
One use case will be file for drives (no filename quoting issues), i.e. -drive id=test,if=virtio -set drive.test.file=/vmdisk/test-virtio.img It will work for any other option (assuming handled by QemuOpts) though. Except for id= for obvious reasons ;). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-Id:
2009-08-10QemuOpts: create qemu-config.hGerd Hoffmann1-0/+73
Move drive option description there. Rename it, give it a qemu_ prefix. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Message-Id:
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