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c5fb80d3b2
linux/arch/powerpc/kvm
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Paul Mackerras c5fb80d3b2 KVM: PPC: Book3S HV: Fix decrementer timeouts with non-zero TB offset 
Commit c7699822bc21 ("KVM: PPC: Book3S HV: Make physical thread 0 do
the MMU switching") reordered the guest entry/exit code so that most
of the guest register save/restore code happened in guest MMU context.
A side effect of that is that the timebase still contains the guest
timebase value at the point where we compute and use vcpu->arch.dec_expires,
and therefore that is now a guest timebase value rather than a host
timebase value.  That in turn means that the timeouts computed in
kvmppc_set_timer() are wrong if the timebase offset for the guest is
non-zero.  The consequence of that is things such as "sleep 1" in a
guest after migration may sleep for much longer than they should.

This fixes the problem by converting between guest and host timebase
values as necessary, by adding or subtracting the timebase offset.
This also fixes an incorrect comment.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Scott Wood <scottwood@freescale.com>
2014-03-29 19:58:39 +11:00
..
44x_emulate.c kvm: powerpc: Add kvmppc_ops callback 2013-10-17 15:24:26 +02:00
44x_tlb.c kvm: powerpc: Add kvmppc_ops callback 2013-10-17 15:24:26 +02:00
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: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
book3s_32_mmu_host.c KVM: PPC: NULL return of kvmppc_mmu_hpte_cache_next should be handled 2014-01-09 10:15:11 +01:00
book3s_32_mmu.c KVM: PPC: Book3S PR: Better handling of host-side read-only pages 2013-10-17 14:49:35 +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: powerpc: book3s: pr: move PR related tracepoints to a separate header 2013-10-17 15:36:22 +02:00
book3s_64_mmu_hv.c KVM: PPC: Book3S HV: Add transactional memory support 2014-03-29 19:58:02 +11:00
book3s_64_mmu.c KVM: PPC: Book3S PR: Better handling of host-side read-only pages 2013-10-17 14:49:35 +02:00
book3s_64_slb.S powerpc: Fix little endian lppaca, slb_shadow and dtl_entry 2013-08-14 15:33:35 +10:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE 2014-03-26 23:34:27 +11:00
book3s_64_vio.c ppc: kvm: use anon_inode_getfd() with O_CLOEXEC flag 2013-08-26 13:19:56 +03:00
book3s_emulate.c kvm: powerpc: book3s: Support building HV and PR KVM as module 2013-10-17 15:45:35 +02:00
book3s_exports.c KVM: PPC: Use load_fp/vr_state rather than load_up_fpu/altivec 2014-01-09 10:14:59 +01:00
book3s_hv_builtin.c powerpc/kvm: Contiguous memory allocator based RMA allocation 2013-07-08 16:20:20 +02:00
book3s_hv_cma.c powerpc/kvm: Use 256K chunk to track both RMA and hash page table allocation. 2013-07-08 16:21:13 +02:00
book3s_hv_cma.h powerpc/kvm: Use 256K chunk to track both RMA and hash page table allocation. 2013-07-08 16:21:13 +02:00
book3s_hv_interrupts.S KVM: PPC: Book3S HV: Align physical and virtual CPU thread numbers 2014-01-27 16:00:59 +01:00
book3s_hv_ras.c KVM: PPC: Book3S HV: Fix compilation without CONFIG_PPC_POWERNV 2013-01-06 14:02:00 +01:00
book3s_hv_rm_mmu.c KVM: PPC: Book3S HV: Don't use kvm_memslots() in real mode 2014-03-29 19:58:35 +11:00
book3s_hv_rm_xics.c KVM: PPC: Book3S HV: Add support for real mode ICP in XICS emulation 2013-04-26 20:27:32 +02:00
book3s_hv_rmhandlers.S KVM: PPC: Book3S HV: Fix decrementer timeouts with non-zero TB offset 2014-03-29 19:58:39 +11:00
book3s_hv.c KVM: PPC: Book3S HV: Return ENODEV error rather than EIO 2014-03-29 19:58:29 +11:00
book3s_interrupts.S KVM: PPC: Book3S: PR: Enable interrupts earlier 2013-12-09 09:41:41 +01:00
book3s_mmu_hpte.c kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header 2013-10-17 15:36:22 +02:00
book3s_paired_singles.c KVM: PPC: Store FP/VSX/VMX state in thread_fp/vr_state structures 2014-01-09 10:15:00 +01:00
book3s_pr_papr.c KVM: PPC: Book3S PR: Make HPT accesses and updates SMP-safe 2013-10-17 14:45:04 +02:00
book3s_pr.c Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue 2014-01-29 18:29:01 +01:00
book3s_rmhandlers.S Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue 2014-01-29 18:29:01 +01:00
book3s_rtas.c KVM: PPC: Book3S: Trim top 4 bits of physical address in RTAS code 2014-03-29 19:58:23 +11:00
book3s_segment.S KVM: PPC: Book3S PR: Cope with doorbell interrupts 2014-01-27 16:01:23 +01:00
book3s_xics.c KVM: PPC: fix couple of memory leaks in MPIC/XICS devices 2014-01-09 10:14:54 +01:00
book3s_xics.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
book3s.c KVM: PPC: Store FP/VSX/VMX state in thread_fp/vr_state structures 2014-01-09 10:15:00 +01:00
book3s.h kvm: powerpc: book3s: Allow the HV and PR selection per virtual machine 2013-10-17 18:42:36 +02:00
booke_emulate.c KVM: PPC: BookE: Emulate mfspr on EPR 2013-01-10 13:42:30 +01:00
booke_interrupts.S KVM: PPC: booke: Added debug handler 2013-03-22 01:21:09 +01:00
booke.c Merge branch 'kvm-ppc-next' of git://github.com/agraf/linux-2.6 into kvm-queue 2014-01-29 18:29:01 +01:00
booke.h KVM: PPC: Load/save FP/VMX/VSX state directly to/from vcpu struct 2014-01-09 10:15:02 +01:00
bookehv_interrupts.S KVM: PPC: Book3E HV: call RECONCILE_IRQ_STATE to sync the software state 2014-01-09 10:15:10 +01:00
e500_emulate.c kvm: powerpc: Add kvmppc_ops callback 2013-10-17 15:24:26 +02:00
e500_mmu_host.c kvm: powerpc: use caching attributes as per linux pte 2014-01-09 10:15:08 +01:00
e500_mmu_host.h KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static 2013-01-24 19:23:33 +01:00
e500_mmu.c KVM: PPC: e500: Fix bad address type in deliver_tlb_misss() 2014-01-27 16:00:54 +01:00
e500.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
e500.h kvm: powerpc: use caching attributes as per linux pte 2014-01-09 10:15:08 +01:00
e500mc.c KVM: PPC: Add devname:kvm aliases for modules 2014-01-09 10:14:00 +01:00
emulate.c KVM: PPC: Book3S: MMIO emulation support for little endian guests 2014-01-27 16:00:39 +01:00
fpu.S powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} 2010-09-02 14:07:32 +10:00
irq.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
Kconfig Here are the 3.13 KVM changes. There was a lot of work on the PPC 2013-11-15 13:51:36 +09:00
Makefile kvm: powerpc: book3s: Support building HV and PR KVM as module 2013-10-17 15:45:35 +02:00
mpic.c KVM: PPC: fix couple of memory leaks in MPIC/XICS devices 2014-01-09 10:14:54 +01:00
powerpc.c kvm/ppc: IRQ disabling cleanup 2014-01-27 16:00:55 +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_booke.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00
trace_pr.h kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header 2013-10-17 15:36:22 +02:00
trace.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00