- 11 7月, 2013 1 次提交
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由 Scott Wood 提交于
Currently this is only being done on 64-bit. Rather than just move it out of the 64-bit ifdef, move it to kvm_lazy_ee_enable() so that it is consistent with lazy ee state, and so that we don't track more host code as interrupts-enabled than necessary. Rename kvm_lazy_ee_enable() to kvm_fix_ee_before_entry() to reflect that this function now has a role on 32-bit as well. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 30 6月, 2013 1 次提交
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由 Tiejun Chen 提交于
Availablity of the doorbell_exception function is guarded by CONFIG_PPC_DOORBELL. Use the same define to guard our caller of it. Signed-off-by: NTiejun Chen <tiejun.chen@windriver.com> [agraf: improve patch description] Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 19 6月, 2013 1 次提交
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由 Scott Wood 提交于
kwmppc_lazy_ee_enable() should be called as late as possible, or else we get things like WARN_ON(preemptible()) in enable_kernel_fp() in configurations where preemptible() works. Note that book3s_pr already waits until just before __kvmppc_vcpu_run to call kvmppc_lazy_ee_enable(). Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 11 6月, 2013 2 次提交
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由 Scott Wood 提交于
EE is hard-disabled on entry to kvmppc_handle_exit(), so call hard_irq_disable() so that PACA_IRQ_HARD_DIS is set, and soft_enabled is unset. Without this, we get warnings such as arch/powerpc/kernel/time.c:300, and sometimes host kernel hangs. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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由 Scott Wood 提交于
KVM core expects arch code to acquire the srcu lock when calling gfn_to_memslot and similar functions. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 27 4月, 2013 5 次提交
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由 Scott Wood 提交于
Enabling this capability connects the vcpu to the designated in-kernel MPIC. Using explicit connections between vcpus and irqchips allows for flexibility, but the main benefit at the moment is that it simplifies the code -- KVM doesn't need vm-global state to remember which MPIC object is associated with this vm, and it doesn't need to care about ordering between irqchip creation and vcpu creation. Signed-off-by: NScott Wood <scottwood@freescale.com> [agraf: add stub functions for kvmppc_mpic_{dis,}connect_vcpu] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Scott Wood 提交于
Hook the MPIC code up to the KVM interfaces, add locking, etc. Signed-off-by: NScott Wood <scottwood@freescale.com> [agraf: add stub function for kvmppc_mpic_set_epr, non-booke, 64bit] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
Refactor Book3E ONE_REG ioctl implementation to use kvmppc_get_one_reg/ kvmppc_set_one_reg delegation interface introduced by Book3S. This is necessary for MMU SPRs which are platform specifics. Get rid of useless case braces in the process. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
This allows the exit to user space if emulator request by returning EMULATE_EXIT_USER. This will be used in subsequent patches in list Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
This patch defines the interface parameter for KVM_SET_GUEST_DEBUG ioctl support. Follow up patches will use this for setting up hardware breakpoints, watchpoints and software breakpoints. Also kvm_arch_vcpu_ioctl_set_guest_debug() is brought one level below. This is because I am not sure what is required for book3s. So this ioctl behaviour will not change for book3s. Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 17 4月, 2013 1 次提交
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由 Bharat Bhushan 提交于
This patch adds the one_reg interface to get the special instruction to be used for setting software breakpoint from userspace. Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 22 3月, 2013 3 次提交
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由 Paul Mackerras 提交于
Currently kvmppc_core_dequeue_external() takes a struct kvm_interrupt * argument and does nothing with it, in any of its implementations. This removes it in order to make things easier for forthcoming in-kernel interrupt controller emulation code. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
If userspace wants to change some specific bits of TSR (timer status register) then it uses GET/SET_SREGS ioctl interface. So the steps will be: i) user-space will make get ioctl, ii) change TSR in userspace iii) then make set ioctl. It can happen that TSR gets changed by kernel after step i) and before step iii). To avoid this we have added below one_reg ioctls for oring and clearing specific bits in TSR. This patch adds one registerface for: 1) setting specific bit in TSR (timer status register) 2) clearing specific bit in TSR (timer status register) 3) setting/getting the TCR register. There are cases where we want to only change TCR and not TSR. Although we can uses SREGS without KVM_SREGS_E_UPDATE_TSR flag but I think one reg is better. I am open if someone feels we should use SREGS only here. 4) getting/setting TSR register Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
This is done so that same function can be called from SREGS and ONE_REG interface (follow up patch). Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 05 3月, 2013 1 次提交
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由 Takuya Yoshikawa 提交于
This patch makes the parameter old a const pointer to the old memory slot and adds a new parameter named change to know the change being requested: the former is for removing extra copying and the latter is for cleaning up the code. Signed-off-by: NTakuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 13 2月, 2013 2 次提交
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由 Alexander Graf 提交于
When the guest triggers an alignment interrupt, we don't handle it properly today and instead BUG_ON(). This really shouldn't happen. Instead, we should just pass the interrupt back into the guest so it can deal with it. Reported-by: NGao Guanhua-B22826 <B22826@freescale.com> Tested-by: NGao Guanhua-B22826 <B22826@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
Current kvmppc_booke_handlers uses the same macro (KVM_HANDLER) and all handlers are considered to be the same size. This will not be the case if we want to use different macros for different handlers. This patch improves the kvmppc_booke_handler so that it can support different macros for different handlers. Signed-off-by: NLiu Yu <yu.liu@freescale.com> [bharat.bhushan@freescale.com: Substantial changes] Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 10 1月, 2013 3 次提交
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由 Alexander Graf 提交于
We need to be able to read and write the contents of the EPR register from user space. This patch implements that logic through the ONE_REG API and declares its (never implemented) SREGS counterpart as deprecated. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
The External Proxy Facility in FSL BookE chips allows the interrupt controller to automatically acknowledge an interrupt as soon as a core gets its pending external interrupt delivered. Today, user space implements the interrupt controller, so we need to check on it during such a cycle. This patch implements logic for user space to enable EPR exiting, disable EPR exiting and EPR exiting itself, so that user space can acknowledge an interrupt when an external interrupt has successfully been delivered into the guest vcpu. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
When injecting an interrupt into guest context, we usually don't need to check for requests anymore. At least not until today. With the introduction of EPR, we will have to create a request when the guest has successfully accepted an external interrupt though. So we need to prepare the interrupt delivery to abort guest entry gracefully. Otherwise we'd delay the EPR request. Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 06 12月, 2012 4 次提交
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由 Mihai Caraman 提交于
Implement ONE_REG interface for EPCR register adding KVM_REG_PPC_EPCR to the list of ONE_REG PPC supported registers. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> [agraf: remove HV dependency, use get/put_user] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
Add EPCR support in booke mtspr/mfspr emulation. EPCR register is defined only for 64-bit and HV categories, we will expose it at this point only to 64-bit virtual processors running on 64-bit HV hosts. Define a reusable setter function for vcpu's EPCR. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> [agraf: move HV dependency in the code] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
When delivering guest IRQs, update MSR computation mode according to guest interrupt computation mode found in EPCR. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> [agraf: remove HV dependency in the code] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Mihai Caraman 提交于
Include header file for get_tb() declaration. Signed-off-by: NMihai Caraman <mihai.caraman@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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- 06 10月, 2012 16 次提交
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由 Scott Wood 提交于
Avoid a race as described in the code comment. Also remove a related smp_wmb() from booke's kvmppc_prepare_to_enter(). I can't see any reason for it, and the book3s_pr version doesn't have it. Signed-off-by: NScott Wood <scottwood@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Paul Mackerras 提交于
This removes the powerpc "generic" updates of vcpu->cpu in load and put, and moves them to the various backends. The reason is that "HV" KVM does its own sauce with that field and the generic updates might corrupt it. The field contains the CPU# of the -first- HW CPU of the core always for all the VCPU threads of a core (the one that's online from a host Linux perspective). However, the preempt notifiers are going to be called on the threads VCPUs when they are running (due to them sleeping on our private waitqueue) causing unload to be called, potentially clobbering the value. Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Paul Mackerras 提交于
This adds an implementation of kvm_arch_flush_shadow_memslot for Book3S HV, and arranges for kvmppc_core_commit_memory_region to flush the dirty log when modifying an existing slot. With this, we can handle deletion and modification of memory slots. kvm_arch_flush_shadow_memslot calls kvmppc_core_flush_memslot, which on Book3S HV now traverses the reverse map chains to remove any HPT (hashed page table) entries referring to pages in the memslot. This gets called by generic code whenever deleting a memslot or changing the guest physical address for a memslot. We flush the dirty log in kvmppc_core_commit_memory_region for consistency with what x86 does. We only need to flush when an existing memslot is being modified, because for a new memslot the rmap array (which stores the dirty bits) is all zero, meaning that every page is considered clean already, and when deleting a memslot we obviously don't care about the dirty bits any more. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Paul Mackerras 提交于
Now that we have an architecture-specific field in the kvm_memory_slot structure, we can use it to store the array of page physical addresses that we need for Book3S HV KVM on PPC970 processors. This reduces the size of struct kvm_arch for Book3S HV, and also reduces the size of struct kvm_arch_memory_slot for other PPC KVM variants since the fields in it are now only compiled in for Book3S HV. This necessitates making the kvm_arch_create_memslot and kvm_arch_free_memslot operations specific to each PPC KVM variant. That in turn means that we now don't allocate the rmap arrays on Book3S PR and Book E. Since we now unpin pages and free the slot_phys array in kvmppc_core_free_memslot, we no longer need to do it in kvmppc_core_destroy_vm, since the generic code takes care to free all the memslots when destroying a VM. We now need the new memslot to be passed in to kvmppc_core_prepare_memory_region, since we need to initialize its arch.slot_phys member on Book3S HV. Signed-off-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
When running on HV aware hosts, we can not trap when the guest sets the FP bit, so we just let it do so when it wants to, because it has full access to MSR. For non-HV aware hosts with an FPU (like 440), we need to also adjust the shadow MSR though. Otherwise the guest gets an FP unavailable trap even when it really enabled the FP bit in MSR. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
IAC/DAC are defined as 32 bit while they are 64 bit wide. So ONE_REG interface is added to set/get them. Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Bharat Bhushan 提交于
This patch adds the watchdog emulation in KVM. The watchdog emulation is enabled by KVM_ENABLE_CAP(KVM_CAP_PPC_BOOKE_WATCHDOG) ioctl. The kernel timer are used for watchdog emulation and emulates h/w watchdog state machine. On watchdog timer expiry, it exit to QEMU if TCR.WRC is non ZERO. QEMU can reset/shutdown etc depending upon how it is configured. Signed-off-by: NLiu Yu <yu.liu@freescale.com> Signed-off-by: NScott Wood <scottwood@freescale.com> [bharat.bhushan@freescale.com: reworked patch] Signed-off-by: NBharat Bhushan <bharat.bhushan@freescale.com> [agraf: adjust to new request framework] Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Requests may want to tell us that we need to go back into host state, so add a return value for the checks. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Our prepare_to_enter helper wants to be able to return in more circumstances to the host than only when an interrupt is pending. Broaden the interface a bit and move even more generic code to the generic helper. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We need to call kvm_guest_enter in booke and book3s, so move its call to generic code. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
Today, we disable preemption while inside guest context, because we need to expose to the world that we are not in a preemptible context. However, during that time we already have interrupts disabled, which would indicate that we are in a non-preemptible context. The reason the checks for irqs_disabled() fail for us though is that we manually control hard IRQs and ignore all the lazy EE framework. Let's stop doing that. Instead, let's always use lazy EE to indicate when we want to disable IRQs, but do a special final switch that gets us into EE disabled, but soft enabled state. That way when we get back out of guest state, we are immediately ready to process interrupts. This simplifies the code drastically and reduces the time that we appear as preempt disabled. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
When getting out of __vcpu_run, let's be consistent about the state we return in. We want to always * have IRQs enabled * have called kvm_guest_exit before Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
The x86 implementation of KVM accounts for host time while processing guest exits. Do the same for us. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We only need to set vcpu->mode to outside once. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We need to do the same things when preparing to enter a guest for booke and book3s_pr cores. Fold the generic code into a generic function that both call. Signed-off-by: NAlexander Graf <agraf@suse.de>
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由 Alexander Graf 提交于
We only call kvmppc_check_requests() when vcpu->requests != 0, so drop the redundant check in the function itself Signed-off-by: NAlexander Graf <agraf@suse.de>
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