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a64fd70748
linux/arch/powerpc/kvm
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Paul Mackerras a64fd70748 KVM: PPC: Book3S HV: Reset reverse-map chains when resetting the HPT 
With HV-style KVM, we maintain reverse-mapping lists that enable us to
find all the HPT (hashed page table) entries that reference each guest
physical page, with the heads of the lists in the memslot->arch.rmap
arrays.  When we reset the HPT (i.e. when we reboot the VM), we clear
out all the HPT entries but we were not clearing out the reverse
mapping lists.  The result is that as we create new HPT entries, the
lists get corrupted, which can easily lead to loops, resulting in the
host kernel hanging when it tries to traverse those lists.

This fixes the problem by zeroing out all the reverse mapping lists
when we zero out the HPT.  This incidentally means that we are also
zeroing our record of the referenced and changed bits (not the bits
in the Linux PTEs, used by the Linux MM subsystem, but the bits used
by the KVM_GET_DIRTY_LOG ioctl, and those used by kvm_age_hva() and
kvm_test_age_hva()).

Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
2012-12-06 01:33:58 +01:00
..
44x_emulate.c KVM: PPC: 44x: fix DCR read/write 2012-10-30 10:54:50 +01:00
44x_tlb.c KVM: do not release the error page 2012-08-06 16:04:58 +03:00
44x_tlb.h KVM: ppc: rename 44x MMU functions used in booke.c 2009-03-24 11:02:56 +02:00
44x.c KVM: PPC: 44x: Initialize PVR 2012-10-05 23:38:47 +02:00
book3s_32_mmu_host.c KVM: do not treat noslot pfn as a error pfn 2012-10-29 20:31:04 -02:00
book3s_32_mmu.c KVM: PPC: Put segment registers in shared page 2010-10-24 10:52:11 +02:00
book3s_32_sr.S KVM: PPC: book3s_pr: Simplify transitions between virtual and real mode 2011-09-25 19:52:29 +03:00
book3s_64_mmu_host.c KVM: do not treat noslot pfn as a error pfn 2012-10-29 20:31:04 -02:00
book3s_64_mmu_hv.c KVM: PPC: Book3S HV: Reset reverse-map chains when resetting the HPT 2012-12-06 01:33:58 +01:00
book3s_64_mmu.c KVM: PPC: Interpret SDR1 as HVA in PAPR mode 2011-09-25 19:52:21 +03:00
book3s_64_slb.S KVM: PPC: Book3S: PR: No isync in slbie path 2012-05-06 16:19:09 +02:00
book3s_64_vio_hv.c kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM 2012-05-06 16:19:11 +02:00
book3s_64_vio.c kvm/book3s: Make kernel emulated H_PUT_TCE available for "PR" KVM 2012-05-06 16:19:11 +02:00
book3s_emulate.c KVM: PPC: Emulator: clean up SPR reads and writes 2012-05-06 16:19:13 +02:00
book3s_exports.c powerpc: various straight conversions from module.h --> export.h 2011-10-31 19:30:44 -04:00
book3s_hv_builtin.c KVM: PPC: Quieten message about allocating linear regions 2012-10-05 23:38:40 +02:00
book3s_hv_interrupts.S KVM: PPC: Work around POWER7 DABR corruption problem 2012-04-08 14:01:36 +03:00
book3s_hv_rm_mmu.c KVM: PPC: Book3S HV: Make a HPTE removal function available 2012-12-06 01:33:55 +01:00
book3s_hv_rmhandlers.S Merge commit 'origin/queue' into for-queue 2012-10-31 13:36:18 +01:00
book3s_hv.c KVM: PPC: Book3S HV: Provide a method for userspace to read and write the HPT 2012-12-06 01:33:57 +01:00
book3s_interrupts.S powerpc: Merge VCPU_GPR 2012-07-10 19:18:06 +10:00
book3s_mmu_hpte.c KVM: PPC: Book3s: PR: Add (dumb) MMU Notifier support 2012-10-05 23:38:43 +02:00
book3s_paired_singles.c powerpc/kvm: Fallout from system.h disintegration 2012-04-02 14:00:04 +10:00
book3s_pr_papr.c powerpc/kvm: Fix "PR" KVM implementation of H_CEDE 2012-07-11 17:36:38 +02:00
book3s_pr.c KVM: PPC: Book3S: Get/set guest FP regs using the GET/SET_ONE_REG interface 2012-10-05 23:38:54 +02:00
book3s_rmhandlers.S KVM: PPC: Book3S: PR: Rework irq disabling 2012-10-05 23:38:45 +02:00
book3s_segment.S powerpc: Move and fix MTMSR_EERI definition 2012-07-10 19:18:08 +10:00
book3s.c KVM: PPC: Book3S: Get/set guest FP regs using the GET/SET_ONE_REG interface 2012-10-05 23:38:54 +02:00
booke_emulate.c KVM: PPC: BookE: Add MCSR SPR support 2012-10-05 23:38:48 +02:00
booke_interrupts.S KVM updates for the 3.6 merge window 2012-07-24 12:01:20 -07:00
booke.c KVM: PPC: set IN_GUEST_MODE before checking requests 2012-10-05 23:38:54 +02:00
booke.h KVM: PPC: Emulator: clean up SPR reads and writes 2012-05-06 16:19:13 +02:00
bookehv_interrupts.S powerpc/kvm/bookehv: Fix build regression 2012-07-27 11:42:32 +10:00
e500_emulate.c KVM: PPC: booke: Added DECAR support 2012-05-30 11:43:11 +02:00
e500_tlb.c KVM: do not treat noslot pfn as a error pfn 2012-10-29 20:31:04 -02:00
e500.c KVM: PPC: e500: refactor core-specific TLB code 2012-04-08 12:51:12 +03:00
e500.h KVM: PPC: E500: Remove E500_TLB_DIRTY flag 2012-10-05 23:38:48 +02:00
e500mc.c KVM: PPC: e500mc: Fix tlbilx emulation for 64-bit guests 2012-07-11 17:39:38 +02:00
emulate.c KVM: PPC: Move mtspr/mfspr emulation into own functions 2012-10-30 10:54:51 +01:00
fpu.S powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} 2010-09-02 14:07:32 +10:00
Kconfig KVM: PPC: Support eventfd 2012-12-06 01:33:50 +01:00
Makefile KVM: PPC: Support eventfd 2012-12-06 01:33:50 +01:00
powerpc.c KVM: PPC: Book3S HV: Provide a method for userspace to read and write the HPT 2012-12-06 01:33:57 +01:00
timing.c KVM: PPC: fix partial application of "exit timing in ticks" 2011-07-12 13:16:28 +03:00
timing.h KVM: PPC: booke: category E.HV (GS-mode) support 2012-04-08 12:51:19 +03:00
trace.h Merge remote-tracking branch 'master' into queue 2012-10-29 19:15:32 -02:00