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2009-09-27target-i386: kill a tmp registerAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-09-27target-i386: use subfi instead of sub with a non-freed constantAurelien Jarno
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-09-25gcc wants 1st static and then constJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-20ioports: remove unused env parameter and compile only onceBlue Swirl
The CPU state parameter is not used, remove it and adjust callers. Now we can compile ioport.c once for all targets. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12i386: Drop redundant kvm_enabled testJan Kiszka
cpu_synchronize_state already does this. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12Work around OpenSolaris sys/regset.h namespace pollutionBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-12Fix sys-queue.h conflict for goodBlue Swirl
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>
2009-09-11kvm_arch_get_registers() shouldn't be called directlyGleb Natapov
Direct call to kvm_arch_get_registers() bypass logic in cpu_synchronize_state() Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-05Fix Sparse warnings: add "static"Blue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-27kvm: Simplify cpu_synchronize_state()Avi Kivity
cpu_synchronize_state() is a little unreadable since the 'modified' argument isn't self-explanatory. Simplify it by making it always synchronize the kernel state into qemu, and automatically flush the registers back to the kernel if they've been synchronized on this exit. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27introduce kvm64 CPUAndre Przywara
In addition to the TCG based qemu64 type let's introduce a kvm64 CPU type, which is the least common denominator of all KVM-capable x86-CPUs (based on Intel Pentium 4 Prescott). It can be used as a base type for migration. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27allow overriding of CPUID level on command lineAndre Przywara
The CPUID level determines how many CPUID leafs are exposed to the guest. Some features (like multi-core) cannot be propagated without the proper level, but guests maybe confused by bogus entries in some leafs. So add level= and xlevel= to the list of -cpu options to allow the user to override the default settings. While at it, merge unnecessary local variables into one and allow hexadecimal arguments. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27set CPUID bits to present cores and threads topologyAndre Przywara
Controlled by the enhanced -smp option set the CPUID bits to present the guest the desired topology. This is vendor specific, but (with the exception of the CMP_LEGACY bit) not conflicting, so we set all bits everytime. There is no real multithreading support for AMD CPUs, so report cores instead. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27push CPUID level to 4 to allow Intel multicore decodingAndre Przywara
Intel CPUs store the number of cores in CPUID leaf 4. So push the maxleaf value to 4 to allow the guests access to this leaf. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-24cleanup cpu-exec.c, part 0/N: consolidate handle_cpu_signalNathan Froyd
handle_cpu_signal is very nearly copy-paste code for each target, with a few minor variations. This patch sets up appropriate defaults for a generic handle_cpu_signal and provides overrides for particular targets that did things differently. Fixing things like the persistent (XXX: use sigsetjmp) should now become somewhat easier. Previous comments on this patch suggest that the "activate soft MMU for this block" comments refer to defunct functionality. I have removed such blocks for the appropriate targets in this patch. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-24Unbreak large mem support by removing kqemuAnthony Liguori
kqemu introduces a number of restrictions on the i386 target. The worst is that it prevents large memory from working in the default build. Furthermore, kqemu is fundamentally flawed in a number of ways. It relies on the TSC as a time source which will not be reliable on a multiple processor system in userspace. Since most modern processors are multicore, this severely limits the utility of kqemu. kvm is a viable alternative for people looking to accelerate qemu and has the benefit of being supported by the upstream Linux kernel. If someone can implement work arounds to remove the restrictions introduced by kqemu, I'm happy to avoid and/or revert this patch. N.B. kqemu will still function in the 0.11 series but this patch removes it from the 0.12 series. Paul, please Ack or Nack this patch. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27rename WORDS_BIGENDIAN to HOST_WORDS_BIGENDIANJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16Only allow -cpu host when KVM is enabledAnthony Liguori
-cpu host is not at all useful when using tcg. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16Initialize cpuid variablesAnthony Liguori
This causes a build break when !KVM. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16omit 3DNOW! CPUID bits from qemu64 CPU modelAndre Przywara
Since we recently do not disable 3DNOW! support anymore, we should avoid setting the bits in the default qemu64 CPU model to ease migration. TCG does not support it anyway and even AMD deprecates it's usage nowadays. If you want to use it in KVM, use the phenom, athlon or host CPU model. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16Update to a hopefully more future proof FSF addressBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-16gdbstub: x86: Support for setting segment registersJan Kiszka
This allows to set segment registers via gdb also in system emulation mode. Basic sanity checks are applied and nothing is changed if they fail. But screwing up the target via this interface will never be complicated, so I avoided being too paranoid here. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-10kvm: Work around borken MSR_GET_INDEX_LISTJan Kiszka
Allocate enough memory for KVM_GET_MSR_INDEX_LIST as older kernels shot far beyond their limits, corrupting user space memory. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-10Make sure to mark MCE defines as ULLAnthony Liguori
Fixes build on 32-bit Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-09QEMU: MCE: Add MCE simulation to qemu/tcgHuang Ying
- MCE features are initialized when VCPU is intialized according to CPUID. - A monitor command "mce" is added to inject a MCE. - A new interrupt mask: CPU_INTERRUPT_MCE is added to inject the MCE. aliguori: fix build for linux-user Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-02Use ctz64 in favor of ffsllJan Kiszka
Not all host platforms support ffsll. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2009-07-01Suppress a GCC warningBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-06-29KVM: x86: Refactor persistent CPU stateJan Kiszka
This patch aligns the KVM-related layout and encoding of the CPU state to be saved to disk or migrated with qemu-kvm. The major differences are reordering of fields and a compressed interrupt_bitmap into a single number as there can be no more than one pending IRQ at a time. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29preserve the hypervisor bit while KVM trims the CPUID bitsAndre Przywara
The KVM kernel will disable all bits in CPUID which are not present in the host. As this is mostly true for the hypervisor bit (1.ecx), preserve its value before the trim and restore it afterwards. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29remove CPUID host hacksAndre Przywara
KVM provides an in-kernel feature to disable CPUID bits that are not present in the current host. So there is no need here to duplicate this work. Additionally allows 3DNow! on capable processors, since the restriction seems to apply to QEMU/TCG only. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29fix KVMs GET_SUPPORTED_CPUID feature usageAndre Przywara
If we want to trim the user provided CPUID bits for KVM to be not greater than that of the host, we should not remove the bits _after_ we sent them to the kernel. This fixes the masking of features that are not present on the host by moving the trim function and it's call from helper.c to kvm.c. It helps to use -cpu host. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29CPUID Fn8000_0001.EAX is family/model/stepping, not featuresAndre Przywara
Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29introduce -cpu host targetAndre Przywara
Although the guest's CPUID bits can be controlled in a fine grained way in QEMU, a simple way to inject the host CPU is missing. This is handy for KVM desktop virtualization, where one wants the guest to support the full host feature set. Introduce another CPU type called 'host', which will propagate the host's CPUID bits to the guest. Unwanted bits can still be turned off by using the existing syntax (-cpu host,-skinit) Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29allow hypervisor CPUID bit to be overridenAndre Przywara
KVM defaults to the hypervisor CPUID bit to be set, whereas pure QEMU clears it. On some occasions one wants to set or clear it the other way round (for instance to get HyperV running inside a guest). Move the bit-set to be done before the command line parsing and enable it by default. One can disable it by using: -cpu qemu64,-hypervisor Fix some whitespace damage on the way. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-22Handle init/sipi in a main cpu exec loop. (v2)Gleb Natapov
This should fix compilation problem in case of CONFIG_USER_ONLY. Currently INIT/SIPI is handled in the context of CPU that sends IPI. This patch changes this to handle them like all other events in a main cpu exec loop. When KVM will gain thread per vcpu capability it will be much more clear to handle those event by cpu thread itself and not modify one cpu's state from the context of the other. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-16QEMU KVM: i386: Fix the cpu reset stateNitin A Kamble
As per the IA32 processor manual, the accessed bit is set to 1 in the processor state after reset. qemu pc cpu_reset code was missing this accessed bit setting. Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-16allow CPUID vendor overrideAndre Przywara
KVM-enabled QEMU will always report the vendor ID of the physical CPU it is running on. Allow to override this if explicitly requested on the command line. It will not suffice to name a CPU type (like -cpu phenom), but you have to explicitly set the vendor: -cpu phenom,vendor=AuthenticAMD Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22x86: Add support for resume flagJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2009-05-22kvm: x86: Save/restore KVM-specific CPU statesJan Kiszka
Save and restore all so far neglected KVM-specific CPU states. Handling the TSC stabilizes migration in KVM mode. The interrupt_bitmap and mp_state are currently unused, but will become relevant for in-kernel irqchip support. By including proper saving/restoring already, we avoid having to increment CPU_SAVE_VERSION later on once again. v2: - initialize mp_state runnable (for the boot CPU) Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22kvm: Add missing bits to support live migrationJan Kiszka
This patch adds the missing hooks to allow live migration in KVM mode. It adds proper synchronization before/after saving/restoring the VCPU states (note: PPC is untested), hooks into cpu_physical_memory_set_dirty_tracking() to enable dirty memory logging at KVM level, and synchronizes that drity log into QEMU's view before running ram_live_save(). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-21Convert machine registration to use module init functionsAnthony Liguori
This cleans up quite a lot of #ifdefs, extern variables, and other ugliness. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-20kvm: work around supported cpuid ioctl() brokennessMark McLoughlin
KVM_GET_SUPPORTED_CPUID has been known to fail to return -E2BIG when it runs out of entries. Detect this by always trying again with a bigger table if the ioctl() fills the table. Signed-off-by: Mark McLoughlin <markmc@redhat.com>
2009-05-13Include assert.h from qemu-common.hPaul Brook
Include assert.h from qemu-common.h and remove other direct uses. cpu-all.h still need to include it because of the dyngen-exec.h hacks Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-13Replace gcc variadic macro extension with C99 versionBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-05-08Remove noisy printf when KVM masks CPU featuresAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08kvm: Trim cpu features not supported by kvmAvi Kivity
Remove cpu features that are not supported by kvm from the cpuid features reported to the guest. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08Fix x86 feature modifications for features that set multiple bitsAvi Kivity
QEMU allows adding or removing cpu features by using the syntax '-cpu +feature' or '-cpu -feature'. Some cpuid features cause more than one bit to be set or cleared; but QEMU stops after just one bit has been modified, causing the feature bits to be inconsistent. Fix by allowing all feature bits corresponding to a given name to be set. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08Make x86 cpuid feature names available in file scopeAvi Kivity
To be used later. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-08kvm: Add support for querying supported cpu featuresAvi Kivity
kvm does not support all cpu features; add support for dunamically querying the supported feature set. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-04-24qemu: introduce qemu_init_vcpu (Marcelo Tosatti)aliguori
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7242 c046a42c-6fe2-441c-8c8c-71466251a162
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