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* | | | KVM: PPC: Ignore EXITING_GUEST_MODE modeAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to do anything when mode is EXITING_GUEST_MODE, because we essentially are outside of guest mode and did everything it asked us to do by the time we check it. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Move kvm_guest_enter call into generic codeAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to call kvm_guest_enter in booke and book3s, so move its call to generic code. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Book3S: PR: Rework irq disablingAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Consistentify vcpu exit pathAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Book3S: PR: Indicate we're out of guest modeAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When going out of guest mode, indicate that we are in vcpu->mode. That way requests from other CPUs don't needlessly need to kick us to process them, because it'll just happen next time we enter the guest. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Exit guest context while handling exitAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The x86 implementation of KVM accounts for host time while processing guest exits. Do the same for us. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Book3S: PR: Only do resched check once per exitAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we use our generic exit helper, we can safely drop our previous kvm_resched that we used to trigger at the beginning of the exit handler function. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: Drop redundant vcpu->mode setAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | We only need to set vcpu->mode to outside once. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier supportAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we have very simple MMU Notifier support for e500 in place, also add the same simple support to book3s. It gets us one step closer to actual fast support. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Use same kvmppc_prepare_to_enter code for booke and book3s_prAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: No duplicate request != 0 checkAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We only call kvmppc_check_requests() when vcpu->requests != 0, so drop the redundant check in the function itself Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: Add some more trace pointsAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without trace points, debugging what exactly is going on inside guest code can be very tricky. Add a few more trace points at places that hopefully tell us more when things go wrong. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: E500: Implement MMU notifiersAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The e500 target has lived without mmu notifiers ever since it got introduced, but fails for the user space check on them with hugetlbfs. So in order to get that one working, implement mmu notifiers in a reasonably dumb fashion and be happy. On embedded hardware, we almost never end up with mmu notifier calls, since most people don't overcommit. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: Add support for vcpu->modeAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Generic KVM code might want to know whether we are inside guest context or outside. It also wants to be able to push us out of guest context. Add support to the BookE code for the generic vcpu->mode field that describes the above states. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: Add check_requests helper functionAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need a central place to check for pending requests in. Add one that only does the timer check we already do in a different place. Later, this central function can be extended by more checks. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Quieten message about allocating linear regionsPaul Mackerras2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is printed once for every RMA or HPT region that get preallocated. If one preallocates hundreds of such regions (in order to run hundreds of KVM guests), that gets rather painful, so make it a bit quieter. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: E500: Fix clear_tlb_refsAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our mapping code assumes that TLB0 entries are always mapped. However, after calling clear_tlb_refs() this is no longer the case. Map them dynamically if we find an entry unmapped in TLB0. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: BookE: Expose remote TLB flushes in debugfsAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We're already counting remote TLB flushes in a variable, but don't export it to user space yet. Do so, so we know what's going on. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Expose SYNC cap based on mmu notifiersAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Semantically, the "SYNC" cap means that we have mmu notifiers available. Express this in our #ifdef'ery around the feature, so that we can be sure we don't miss out on ppc targets when they get their implementation. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: PR: Use generic tracepoint for guest exitAlexander Graf2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to have tracing information on guest exits for booke as well as book3s. Since most information is identical, use a common trace point. Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: Add support for ePAPR idle hcall in host kernelLiu Yu-B132012012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | And add a new flag definition in kvm_ppc_pvinfo to indicate whether the host supports the EV_IDLE hcall. Signed-off-by: Liu Yu <yu.liu@freescale.com> [stuart.yoder@freescale.com: cleanup,fixes for conditions allowing idle] Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> [agraf: fix typo] Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: add pvinfo for hcall opcodes on e500mc/e5500Stuart Yoder2012-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Liu Yu <yu.liu@freescale.com> [stuart: factored this out from idle hcall support in host patch] Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* | | | KVM: PPC: use definitions in epapr header for hcallsStuart Yoder2012-10-05
|/ / / | | | | | | | | | | | | Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* | | KVM: split kvm_arch_flush_shadowMarcelo Tosatti2012-09-06
| | | | | | | | | | | | | | | | | | | | | | | | Introducing kvm_arch_flush_shadow_memslot, to invalidate the translations of a single memory slot. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | | KVM: PPC: book3s: fix build error caused by gfn_to_hva_memslot()Gavin Shan2012-08-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The build error was caused by that builtin functions are calling the functions implemented in modules. This error was introduced by commit 4d8b81abc4 ("KVM: introduce readonly memslot"). The patch fixes the build error by moving function __gfn_to_hva_memslot() from kvm_main.c to kvm_host.h and making that "inline" so that the builtin function (kvmppc_h_enter) can use that. Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* | | Merge remote-tracking branch 'upstream/master' into queueMarcelo Tosatti2012-08-26
|\ \ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merging critical fixes from upstream required for development. * upstream/master: (809 commits) libata: Add a space to " 2GB ATA Flash Disk" DMA blacklist entry Revert "powerpc: Update g5_defconfig" powerpc/perf: Use pmc_overflow() to detect rolled back events powerpc: Fix VMX in interrupt check in POWER7 copy loops powerpc: POWER7 copy_to_user/copy_from_user patch applied twice powerpc: Fix personality handling in ppc64_personality() powerpc/dma-iommu: Fix IOMMU window check powerpc: Remove unnecessary ifdefs powerpc/kgdb: Restore current_thread_info properly powerpc/kgdb: Bail out of KGDB when we've been triggered powerpc/kgdb: Do not set kgdb_single_step on ppc powerpc/mpic_msgr: Add missing includes powerpc: Fix null pointer deref in perf hardware breakpoints powerpc: Fixup whitespace in xmon powerpc: Fix xmon dl command for new printk implementation xfs: check for possible overflow in xfs_ioc_trim xfs: unlock the AGI buffer when looping in xfs_dialloc xfs: fix uninitialised variable in xfs_rtbuf_get() powerpc/fsl: fix "Failed to mount /dev: No such device" errors powerpc/fsl: update defconfigs ... Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * | ppc: e500_tlb memset clears nothingAlan Cox2012-08-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Put the parameters the right way around Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031 Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alexander Graf <agraf@suse.de>
| * | KVM: PPC: Add cache flush on page mapAlexander Graf2012-08-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | When we map a page that wasn't icache cleared before, do so when first mapping it in KVM using the same information bits as the Linux mapping logic. That way we are 100% sure that any page we map does not have stale entries in the icache. Signed-off-by: Alexander Graf <agraf@suse.de>
| * | KVM: PPC: Book3S HV: Fix incorrect branch in H_CEDE codePaul Mackerras2012-08-16
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | In handling the H_CEDE hypercall, if this vcpu has already been prodded (with the H_PROD hypercall, which Linux guests don't in fact use), we branch to a numeric label '1f'. Unfortunately there is another '1:' label before the one that we want to jump to. This fixes the problem by using a textual label, 'kvm_cede_prodded'. It also changes the label for another longish branch from '2:' to 'kvm_cede_exit' to avoid a possible future problem if code modifications add another numeric '2:' label in between. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
* | KVM: do not release the error pageXiao Guangrong2012-08-06
| | | | | | | | | | | | | | | | | | | | After commit a2766325cf9f9, the error page is replaced by the error code, it need not be released anymore [ The patch has been compiling tested for powerpc ] Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: do not release the error pfnXiao Guangrong2012-08-06
| | | | | | | | | | | | | | | | | | | | After commit a2766325cf9f9, the error pfn is replaced by the error code, it need not be released anymore [ The patch has been compiling tested for powerpc ] Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | KVM: Push rmap into kvm_arch_memory_slotTakuya Yoshikawa2012-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Two reasons: - x86 can integrate rmap and rmap_pde and remove heuristics in __gfn_to_rmap(). - Some architectures do not need rmap. Since rmap is one of the most memory consuming stuff in KVM, ppc'd better restrict the allocation to Book3S HV. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Avi Kivity <avi@redhat.com>
* | Merge remote-tracking branch 'upstream' into nextAvi Kivity2012-08-05
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - bring back critical fixes (esp. aa67f6096c19bc) - provide an updated base for development * upstream: (4334 commits) missed mnt_drop_write() in do_dentry_open() UBIFS: nuke pdflush from comments gfs2: nuke pdflush from comments drbd: nuke pdflush from comments nilfs2: nuke write_super from comments hfs: nuke write_super from comments vfs: nuke pdflush from comments jbd/jbd2: nuke write_super from comments btrfs: nuke pdflush from comments btrfs: nuke write_super from comments ext4: nuke pdflush from comments ext4: nuke write_super from comments ext3: nuke write_super from comments Documentation: fix the VM knobs descritpion WRT pdflush Documentation: get rid of write_super vfs: kill write_super and sync_supers ACPI processor: Fix tick_broadcast_mask online/offline regression ACPI: Only count valid srat memory structures ACPI: Untangle a return statement for better readability Linux 3.6-rc1 ... Signed-off-by: Avi Kivity <avi@redhat.com>
| * powerpc/kvm/book3s_32: Fix MTMSR_EERI macroAlexander Graf2012-07-31
| | | | | | | | | | | | | | | | | | | | | | | | Commit b38c77d82e4 moved the MTMSR_EERI macro from the KVM code to generic ppc_asm.h code. However, while adding it in the headers for the ppc32 case, it missed out to remove the former definition in the KVM code. This patch fixes compilation on server type PPC32 targets with CONFIG_KVM enabled. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * powerpc/kvm/bookehv: Fix build regressionAlexander Graf2012-07-26
| | | | | | | | | | | | | | | | | | | | After merging the register type check patches from Ben's tree, the hv enabled booke implementation ceased to compile. This patch fixes things up so everyone's happy again. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | Merge branch 'queue' into nextAvi Kivity2012-07-26
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge patches queued during the run-up to the merge window. * queue: (25 commits) KVM: Choose better candidate for directed yield KVM: Note down when cpu relax intercepted or pause loop exited KVM: Add config to support ple or cpu relax optimzation KVM: switch to symbolic name for irq_states size KVM: x86: Fix typos in pmu.c KVM: x86: Fix typos in lapic.c KVM: x86: Fix typos in cpuid.c KVM: x86: Fix typos in emulate.c KVM: x86: Fix typos in x86.c KVM: SVM: Fix typos KVM: VMX: Fix typos KVM: remove the unused parameter of gfn_to_pfn_memslot KVM: remove is_error_hpa KVM: make bad_pfn static to kvm_main.c KVM: using get_fault_pfn to get the fault pfn KVM: MMU: track the refcount when unmap the page KVM: x86: remove unnecessary mark_page_dirty KVM: MMU: Avoid handling same rmap_pde in kvm_handle_hva_range() KVM: MMU: Push trace_kvm_age_page() into kvm_age_rmapp() KVM: MMU: Add memslot parameter to hva handlers ... Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: remove the unused parameter of gfn_to_pfn_memslotXiao Guangrong2012-07-19
| | | | | | | | | | | | | | | | The parameter, 'kvm', is not used in gfn_to_pfn_memslot, we can happily remove it Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: Introduce kvm_unmap_hva_range() for ↵Takuya Yoshikawa2012-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kvm_mmu_notifier_invalidate_range_start() When we tested KVM under memory pressure, with THP enabled on the host, we noticed that MMU notifier took a long time to invalidate huge pages. Since the invalidation was done with mmu_lock held, it not only wasted the CPU but also made the host harder to respond. This patch mitigates this by using kvm_handle_hva_range(). Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: MMU: Make kvm_handle_hva() handle range of addressesTakuya Yoshikawa2012-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When guest's memory is backed by THP pages, MMU notifier needs to call kvm_unmap_hva(), which in turn leads to kvm_handle_hva(), in a loop to invalidate a range of pages which constitute one huge page: for each page for each memslot if page is in memslot unmap using rmap This means although every page in that range is expected to be found in the same memslot, we are forced to check unrelated memslots many times. If the guest has more memslots, the situation will become worse. Furthermore, if the range does not include any pages in the guest's memory, the loop over the pages will just consume extra time. This patch, together with the following patches, solves this problem by introducing kvm_handle_hva_range() which makes the loop look like this: for each memslot for each page in memslot unmap using rmap In this new processing, the actual work is converted to a loop over rmap which is much more cache friendly than before. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| * KVM: Introduce hva_to_gfn_memslot() for kvm_handle_hva()Takuya Yoshikawa2012-07-18
| | | | | | | | | | | | | | | | | | | | | | This restricts hva handling in mmu code and makes it easier to extend kvm_handle_hva() so that it can treat a range of addresses later in this patch series. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Alexander Graf <agraf@suse.de> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
* | Merge tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2012-07-24
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Avi Kivity: "Highlights include - full big real mode emulation on pre-Westmere Intel hosts (can be disabled with emulate_invalid_guest_state=0) - relatively small ppc and s390 updates - PCID/INVPCID support in guests - EOI avoidance; 3.6 guests should perform better on 3.6 hosts on interrupt intensive workloads) - Lockless write faults during live migration - EPT accessed/dirty bits support for new Intel processors" Fix up conflicts in: - Documentation/virtual/kvm/api.txt: Stupid subchapter numbering, added next to each other. - arch/powerpc/kvm/booke_interrupts.S: PPC asm changes clashing with the KVM fixes - arch/s390/include/asm/sigp.h, arch/s390/kvm/sigp.c: Duplicated commits through the kvm tree and the s390 tree, with subsequent edits in the KVM tree. * tag 'kvm-3.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (93 commits) KVM: fix race with level interrupts x86, hyper: fix build with !CONFIG_KVM_GUEST Revert "apic: fix kvm build on UP without IOAPIC" KVM guest: switch to apic_set_eoi_write, apic_write apic: add apic_set_eoi_write for PV use KVM: VMX: Implement PCID/INVPCID for guests with EPT KVM: Add x86_hyper_kvm to complete detect_hypervisor_platform check KVM: PPC: Critical interrupt emulation support KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests KVM: PPC64: booke: Set interrupt computation mode for 64-bit host KVM: PPC: bookehv: Add ESR flag to Data Storage Interrupt KVM: PPC: bookehv64: Add support for std/ld emulation. booke: Added crit/mc exception handler for e500v2 booke/bookehv: Add host crit-watchdog exception support KVM: MMU: document mmu-lock and fast page fault KVM: MMU: fix kvm_mmu_pagetable_walk tracepoint KVM: MMU: trace fast page fault KVM: MMU: fast path of handling guest page fault KVM: MMU: introduce SPTE_MMU_WRITEABLE bit KVM: MMU: fold tlb flush judgement into mmu_spte_update ...
| * KVM: PPC: Critical interrupt emulation supportBharat Bhushan2012-07-11
| | | | | | | | | | | | | | | | | | rfci instruction and CSRR0/1 registers are emulated. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com> Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guestsMihai Caraman2012-07-11
| | | | | | | | | | | | | | | | tlbilxva emulation was using an u32 variable for guest effective address. Replace it with gva_t type to handle 64-bit guests. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC64: booke: Set interrupt computation mode for 64-bit hostMihai Caraman2012-07-11
| | | | | | | | | | | | | | | | 64-bit host needs to remain in 64-bit mode when an exception take place. Set interrupt computaion mode in EPCR register. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC: bookehv: Add ESR flag to Data Storage InterruptMihai Caraman2012-07-11
| | | | | | | | | | | | | | | | ESR register is required by Data Storage Interrupt handling code. Add the specific flag to the interrupt handler. Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC: bookehv64: Add support for std/ld emulation.Varun Sethi2012-07-11
| | | | | | | | | | | | | | Add support for std/ld emulation. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * booke: Added crit/mc exception handler for e500v2Bharat Bhushan2012-07-11
| | | | | | | | | | | | | | | | | | Watchdog is taken at critical exception level. So this patch is tested with host watchdog exception happening when guest is running. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * booke/bookehv: Add host crit-watchdog exception supportBharat Bhushan2012-07-11
| | | | | | | | | | Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC: booke: Added DECAR supportBharat Bhushan2012-05-30
| | | | | | | | | | | | | | | | Added the decrementer auto-reload support. DECAR is readable on e500v2/e500mc and later cpus. Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
| * KVM: PPC: Book3S HV: Make the guest hash table size configurablePaul Mackerras2012-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new ioctl to enable userspace to control the size of the guest hashed page table (HPT) and to clear it out when resetting the guest. The KVM_PPC_ALLOCATE_HTAB ioctl is a VM ioctl and takes as its parameter a pointer to a u32 containing the desired order of the HPT (log base 2 of the size in bytes), which is updated on successful return to the actual order of the HPT which was allocated. There must be no vcpus running at the time of this ioctl. To enforce this, we now keep a count of the number of vcpus running in kvm->arch.vcpus_running. If the ioctl is called when a HPT has already been allocated, we don't reallocate the HPT but just clear it out. We first clear the kvm->arch.rma_setup_done flag, which has two effects: (a) since we hold the kvm->lock mutex, it will prevent any vcpus from starting to run until we're done, and (b) it means that the first vcpu to run after we're done will re-establish the VRMA if necessary. If userspace doesn't call this ioctl before running the first vcpu, the kernel will allocate a default-sized HPT at that point. We do it then rather than when creating the VM, as the code did previously, so that userspace has a chance to do the ioctl if it wants. When allocating the HPT, we can allocate either from the kernel page allocator, or from the preallocated pool. If userspace is asking for a different size from the preallocated HPTs, we first try to allocate using the kernel page allocator. Then we try to allocate from the preallocated pool, and then if that fails, we try allocating decreasing sizes from the kernel page allocator, down to the minimum size allowed (256kB). Note that the kernel page allocator limits allocations to 1 << CONFIG_FORCE_MAX_ZONEORDER pages, which by default corresponds to 16MB (on 64-bit powerpc, at least). Signed-off-by: Paul Mackerras <paulus@samba.org> [agraf: fix module compilation] Signed-off-by: Alexander Graf <agraf@suse.de>
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