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* KVM: ia64: enable external interrupt in vmmYang Zhang2009-06-10
| | | | | | | | | Currently, the interrupt enable bit is cleared when in the vmm. This patch sets the bit and the external interrupts can be dealt with when in the vmm. This improves the I/O performance. Signed-off-by: Yang Zhang <yang.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix interrupt unhalting a vcpu when it shouldn'tGleb Natapov2009-06-10
| | | | | | | | kvm_vcpu_block() unhalts vpu on an interrupt/timer without checking if interrupt window is actually opened. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Timer event should not unconditionally unhalt vcpu.Gleb Natapov2009-06-10
| | | | | | | | | | Currently timer events are processed before entering guest mode. Move it to main vcpu event loop since timer events should be processed even while vcpu is halted. Timer may cause interrupt/nmi to be injected and only then vcpu will be unhalted. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Drop in SN2 replacement of fast path ITC emulation fault handlerJes Sorensen2009-06-10
| | | | | | | | | | Copy in SN2 RTC based ITC emulation for fast exit. The two versions have the same size, so a dropin is simpler than patching the branch instruction to hit the SN2 version. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: SN2 adjust emulated ITC frequency to match RTC frequencyJes Sorensen2009-06-10
| | | | | | | | | On SN2 do not pass down the real ITC frequency, but rather patch the values to match the SN2 RTC frequency. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Create inline function kvm_get_itc() to centralize ITC reading.Jes Sorensen2009-06-10
| | | | | | | | | | | Move all reading of special register 'AR_ITC' into two functions, one in the kernel and one in the VMM module. When running on SN2, base the result on the RTC rather the system ITC, as the ITC isn't synchronized. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Map in SN2 RTC registers to the VMM moduleJes Sorensen2009-06-10
| | | | | | | | | On SN2, map in the SN2 RTC registers to the VMM module, needed for ITC emulation. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: APIC: get rid of deliver_bitmaskGleb Natapov2009-06-10
| | | | | | | | Deliver interrupt during destination matching loop. Signed-off-by: Gleb Natapov <gleb@redhat.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: change the way how lowest priority vcpu is calculatedGleb Natapov2009-06-10
| | | | | | | | | The new way does not require additional loop over vcpus to calculate the one with lowest priority as one is chosen during delivery bitmap construction. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: consolidate ioapic/ipi interrupt delivery logicGleb Natapov2009-06-10
| | | | | | | | | | Use kvm_apic_match_dest() in kvm_get_intr_delivery_bitmask() instead of duplicating the same code. Use kvm_get_intr_delivery_bitmask() in apic_send_ipi() to figure out ipi destination instead of reimplementing the logic. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: APIC: kvm_apic_set_irq deliver all kinds of interruptsGleb Natapov2009-06-10
| | | | | | | Get rid of ioapic_inj_irq() and ioapic_inj_nmi() functions. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: ia64: fix compilation error in kvm_get_lowest_prio_vcpuYang Zhang2009-06-10
| | | | | | | | Modify the arg of kvm_get_lowest_prio_vcpu(). Make it consistent with its declaration. Signed-off-by: Yang Zhang <yang.zhang@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* KVM: ia64: fix locking order entering guestJes Sorensen2009-04-22
| | | | | | | | | | | | | Reorder locking as down_read() may return with local interrupts enabled, which means we could go into vti_vcpu_run() with interrupts enabled. This caused random crashes on the Altix as the timer interrupt tried to read a memory mapped clock source, for which the TLB had not yet been reinstated in the exit, before ipsr was retored. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* Pull pvops into release branchTony Luck2009-03-31
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| * ia64: remove some warnings.Isaku Yamahata2009-03-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the following warnings and related ones. Plus some cosmetics. arch/ia64/kernel/patch.c:112: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:135: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:166: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:202: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast arch/ia64/kernel/patch.c:220: warning: passing argument 1 of 'paravirt_fc' makes integer from pointer without a cast Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * ia64/pv_ops/binary patch: define paravirt_dv_serialize_data() and suppress ↵Isaku Yamahata2009-03-26
| | | | | | | | | | | | | | | | | | | | false positive warning. define paravirt_dv_serialize_data() and insert it to suppress false positive warnings. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | KVM: ia64: Fix the build errors due to lack of macros related to MSI.Xiantao Zhang2009-03-24
| | | | | | | | | | | | | | Include the newly introduced msidef.h to solve the build issues. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: Report IRQ injection status to userspace.Gleb Natapov2009-03-24
| | | | | | | | | | | | | | | | | | | | | | | | IRQ injection status is either -1 (if there was no CPU found that should except the interrupt because IRQ was masked or ioapic was misconfigured or ...) or >= 0 in that case the number indicates to how many CPUs interrupt was injected. If the value is 0 it means that the interrupt was coalesced and probably should be reinjected. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: dynamic nr online cpusJes Sorensen2009-03-24
| | | | | | | | | | | | | | | | | | | | | | Account for number of online cpus and use that in loops iterating over the list of vpus instead of scanning the full array unconditionally. This patch is a building block to facilitate allowing to bump up the size of MAX_VCPUS significantly. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by : Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: Implement some pal calls needed for windows 2008Xiantao Zhang2009-03-24
| | | | | | | | | | | | | | | | | | For windows 2008, it needs more pal calls to implement for booting. In addition, also changes the name of set_{sal, pal}_call_result to get_{sal,pal}_call_result for readability. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: Add the support for translating PAL Call's pointer argsXiantao Zhang2009-03-24
| | | | | | | | | | | | | | Add the support to translate PAL Call's pointer args. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: vTLB change for enabling windows 2008 bootXiantao Zhang2009-03-24
| | | | | | | | | | | | | | Simply the logic of hash vTLB, and export kvm_gpa_to_mpa. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: Userspace controlled irq routingAvi Kivity2009-03-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently KVM has a static routing from GSI numbers to interrupts (namely, 0-15 are mapped 1:1 to both PIC and IOAPIC, and 16:23 are mapped 1:1 to the IOAPIC). This is insufficient for several reasons: - HPET requires non 1:1 mapping for the timer interrupt - MSIs need a new method to assign interrupt numbers and dispatch them - ACPI APIC mode needs to be able to reassign the PCI LINK interrupts to the ioapics This patch implements an interrupt routing table (as a linked list, but this can be easily changed) and a userspace interface to replace the table. The routing table is initialized according to the current hardwired mapping. Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: Add CONFIG_HAVE_KVM_IRQCHIPAvi Kivity2009-03-24
| | | | | | | | | | | | | | Two KVM archs support irqchips and two don't. Add a Kconfig item to make selecting between the two models easier. Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: Code cleanupXiantao Zhang2009-03-24
| | | | | | | | | | | | | | | | Remove some unnecessary blank lines to accord with Kernel's coding style. Also remove vcpu_get_itir_on_fault due to no reference to it. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: ia64: stack get/restore patchJes Sorensen2009-03-24
| | | | | | | | | | | | | | | | | | | | | | Implement KVM_IA64_VCPU_[GS]ET_STACK ioctl calls. This is required for live migrations. Patch is based on previous implementation that was part of old GET/SET_REGS ioctl calls. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: New guest debug interfaceJan Kiszka2009-03-24
|/ | | | | | | | | | | | | | | | | | | | | | | | | | This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic part, controlling the "main switch" and the single-step feature. The arch specific part adds an x86 interface for intercepting both types of debug exceptions separately and re-injecting them when the host was not interested. Moveover, the foundation for guest debugging via debug registers is layed. To signal breakpoint events properly back to userland, an arch-specific data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block contains the PC, the debug exception, and relevant debug registers to tell debug events properly apart. The availability of this new interface is signaled by KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are provided. Note that both SVM and VTX are supported, but only the latter was tested yet. Based on the experience with all those VTX corner case, I would be fairly surprised if SVM will work out of the box. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Add kvm_arch_sync_events to sync with asynchronize eventsSheng Yang2009-02-14
| | | | | | | | | | | | | kvm_arch_sync_events is introduced to quiet down all other events may happen contemporary with VM destroy process, like IRQ handler and work struct for assigned device. For kvm_arch_sync_events is called at the very beginning of kvm_destroy_vm(), so the state of KVM here is legal and can provide a environment to quiet down other events. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: fix fp fault/trap handlerYang Zhang2009-02-14
| | | | | | | | | | | | | | | The floating-point registers f6-f11 is used by vmm and saved in kvm-pt-regs, so should set the correct bit mask and the pointer in fp_state, otherwise, fpswa may touch vmm's fp registers instead of guests'. In addition, for fp trap handling, since the instruction which leads to fp trap is completely executed, so can't use retry machanism to re-execute it, because it may pollute some registers. Signed-off-by: Yang Zhang <yang.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: change KVM to use IOMMU APIJoerg Roedel2009-01-03
| | | | Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* KVM: rename vtd.c to iommu.cJoerg Roedel2009-01-03
| | | | | | | | | Impact: file renamed The code in the vtd.c file can be reused for other IOMMUs as well. So rename it to make it clear that it handle more than VT-d. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* KVM: ia64: Fix kvm_arch_vcpu_ioctl_[gs]et_regs()Jes Sorensen2008-12-31
| | | | | | | | | | | | | | | | | | | | Fix kvm_arch_vcpu_ioctl_[gs]et_regs() to do something meaningful on ia64. Old versions could never have worked since they required pointers to be set in the ioctl payload which were never being set by the ioctl handler for get_regs. In addition reserve extra space for future extensions. The change of layout of struct kvm_regs doesn't require adding a new CAP since get/set regs never worked on ia64 until now. This version doesn't support copying the KVM kernel stack in/out of the kernel. This should be implemented in a seperate ioctl call if ever needed. Signed-off-by: Jes Sorensen <jes@sgi.com> Acked-by : Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Consolidate userspace memory capability reporting into common codeAvi Kivity2008-12-31
| | | | Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Clean up vmm_ivt.S using tab to indent every lineXiantao Zhang2008-12-31
| | | | | | | Using tab for indentation for vmm_ivt.S. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Add handler for crashed vmmXiantao Zhang2008-12-31
| | | | | | | | | Since vmm runs in an isolated address space and it is just a copy of host's kvm-intel module, so once vmm crashes, we just crash all guests running on it instead of crashing whole kernel. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Add some debug points to provide crash infomationXiantao Zhang2008-12-31
| | | | | | | Use printk infrastructure to print out some debug info once VM crashes. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Define printk function for kvm-intel moduleXiantao Zhang2008-12-31
| | | | | | | | | | kvm-intel module is relocated to an isolated address space with kernel, so it can't call host kernel's printk for debug purpose. In the module, we implement the printk to output debug info of vmm. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Remove some macro definitions in asm-offsets.c.Xiantao Zhang2008-12-31
| | | | | | | Use kernel's corresponding macro instead. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Remove lock held by halted vcpuXiantao Zhang2008-12-31
| | | | | | | | | Remove the lock protection for kvm halt logic, otherwise, once other vcpus want to acquire the lock, and they have to wait all vcpus are waken up from halt. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Re-organize data sturure of guests' data areaXiantao Zhang2008-12-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Increase the size of data area to 64M 2. Support more vcpus and memory, 128 vcpus and 256G memory are supported for guests. 3. Add the boundary check for memory and vcpu allocation. With this patch, kvm guest's data area looks as follow: * * +----------------------+ ------- KVM_VM_DATA_SIZE * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET * | | | / | * | .......... | | /vcpu's struct&stack | * | .......... | | /---------------------|---- 0 * | vcpu[5]'s data | | / vpd | * | vcpu[4]'s data | |/-----------------------| * | vcpu[3]'s data | / vtlb | * | vcpu[2]'s data | /|------------------------| * | vcpu[1]'s data |/ | vhpt | * | vcpu[0]'s data |____________________________| * +----------------------+ | * | memory dirty log | | * +----------------------+ | * | vm's data struct | | * +----------------------+ | * | | | * | | | * | | | * | | | * | | | * | | | * | | | * | vm's p2m table | | * | | | * | | | * | | | | * vm's data->| | | | * +----------------------+ ------- 0 * To support large memory, needs to increase the size of p2m. * To support more vcpus, needs to ensure it has enough space to * hold vcpus' data. */ Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Fix: Use correct calling convention for PAL_VPS_RESUME_HANDLERXiantao Zhang2008-11-23
| | | | | | | PAL_VPS_RESUME_HANDLER should use r26 to hold vac fields according to SDM. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Fix incorrect kbuild CFLAGS overrideXiantao Zhang2008-11-23
| | | | | | | | Use CFLAGS_vcpu.o, not EXTRA_CFLAGS, to provide fixed register information to the compiler. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: fix vmm_spin_{un}lock for !CONFIG_SMPXiantao Zhang2008-11-11
| | | | | | | | In the case of !CONFIG_SMP, raw_spinlock_t is empty and the spinlock functions don't build. Fix by defining spinlock functions for the uniprocessor case. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Require the PCI subsystemAvi Kivity2008-11-11
| | | | | | | PCI device assignment makes calls to pci code, so require it to be built into the kernel. Signed-off-by: Avi Kivity <avi@qumranet.com>
* KVM: ia64: Use guest signal mask when blockingXiantao Zhang2008-11-11
| | | | | | | | Before a vcpu blocks, it should switch to the guest signal mask to allow signals to unblock it. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Makefile fix for forcing to re-generate asm-offsets.hXiantao Zhang2008-10-28
| | | | | | | To avoid using stale asm-offsets.h. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: ia64: Fix halt emulation logicXiantao Zhang2008-10-28
| | | | | | | | | | Common halt logic was changed by x86 and did not update ia64. This patch updates halt for ia64. Fixes a regression causing guests to hang with more than 2 vcpus. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix guest shared interrupt with in-kernel irqchipSheng Yang2008-10-28
| | | | | | | | | | | | | | | | | | | | | | Every call of kvm_set_irq() should offer an irq_source_id, which is allocated by kvm_request_irq_source_id(). Based on irq_source_id, we identify the irq source and implement logical OR for shared level interrupts. The allocated irq_source_id can be freed by kvm_free_irq_source_id(). Currently, we support at most sizeof(unsigned long) different irq sources. [Amit: - rebase to kvm.git HEAD - move definition of KVM_USERSPACE_IRQ_SOURCE_ID to common file - move kvm_request_irq_source_id to the update_irq ioctl] [Xiantao: - Add kvm/ia64 stuff and make it work for kvm/ia64 guests] Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* Merge commit 'linus/master' into merge-linusArjan van de Ven2008-10-17
|\ | | | | | | | | | | Conflicts: arch/x86/kvm/i8254.c
| * KVM: ia64: Add intel iommu support for guests.Xiantao Zhang2008-10-15
| | | | | | | | | | | | | | With intel iommu hardware, we can assign devices to kvm/ia64 guests. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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