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Paul Mackerras c20875a3e6 KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR 
Currently it is possible for userspace (e.g. QEMU) to set a value
for the MSR for a guest VCPU which has both of the TS bits set,
which is an illegal combination.  The result of this is that when
we execute a hrfid (hypervisor return from interrupt doubleword)
instruction to enter the guest, the CPU will take a TM Bad Thing
type of program interrupt (vector 0x700).

Now, if PR KVM is configured in the kernel along with HV KVM, we
actually handle this without crashing the host or giving hypervisor
privilege to the guest; instead what happens is that we deliver a
program interrupt to the guest, with SRR0 reflecting the address
of the hrfid instruction and SRR1 containing the MSR value at that
point.  If PR KVM is not configured in the kernel, then we try to
run the host's program interrupt handler with the MMU set to the
guest context, which almost certainly causes a host crash.

This closes the hole by making kvmppc_set_msr_hv() check for the
illegal combination and force the TS field to a safe value (00,
meaning non-transactional).

Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Paul Mackerras <paulus@samba.org>
 		2015-12-10 11:34:27 +11:00
..
Kconfig KVM: PPC: Remove PPC970 from KVM_BOOK3S_64_HV text in Kconfig 2015-08-22 11:16:16 +02:00
Makefile Here are the PPC and ARM changes for KVM, which I separated because 2014-08-07 11:35:30 -07:00
book3s.c KVM: PPC: Book3S: Take the kvm->srcu lock in kvmppc_h_logical_ci_load/store() 2015-09-21 09:05:15 +10:00
book3s.h kvm: Fix page ageing bugs 2014-09-24 14:07:58 +02:00
book3s_32_mmu.c arch: powerpc: kvm: book3s_32_mmu.c: Remove unused function 2014-12-17 13:12:25 +01:00
book3s_32_mmu_host.c KVM: PPC: Fix warnings from sparse 2015-08-22 11:16:16 +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.c KVM: PPC: Disable NX for old magic page using guests 2014-05-30 14:26:24 +02:00
book3s_64_mmu_host.c KVM: PPC: Fix warnings from sparse 2015-08-22 11:16:16 +02:00
book3s_64_mmu_hv.c powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
book3s_64_slb.S KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
book3s_64_vio.c ppc: kvm: use anon_inode_getfd() with O_CLOEXEC flag 2013-08-26 13:19:56 +03:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Introduce hypervisor call H_GET_TCE 2014-03-26 23:34:27 +11:00
book3s_emulate.c KVM: PPC: Fix warnings from sparse 2015-08-22 11:16:16 +02:00
book3s_exports.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_hv.c KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR 2015-12-10 11:34:27 +11:00
book3s_hv_builtin.c KVM: PPC: Book3S HV: Implement dynamic micro-threading on POWER8 2015-08-22 11:16:17 +02:00
book3s_hv_interrupts.S powerpc/kvm: Create proper names for the kvm_host_state PMU fields 2014-12-29 15:45:55 +11:00
book3s_hv_ras.c powerpc/book3s: Fix flush_tlb cpu_spec hook to take a generic argument. 2015-03-17 07:52:48 +11:00
book3s_hv_rm_mmu.c powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
book3s_hv_rm_xics.c KVM: PPC: Book3S HV: Make use of unused threads when running guests 2015-08-22 11:16:17 +02:00
book3s_hv_rmhandlers.S KVM: PPC: Book3S HV: Synthesize segment fault if SLB lookup fails 2015-11-06 15:40:42 +11:00
book3s_interrupts.S KVM: PPC: Book3S PR: Fix ABIv2 on LE 2014-07-28 15:22:15 +02:00
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: Fix warnings from sparse 2015-08-22 11:16:16 +02:00
book3s_pr.c KVM: add "new" argument to kvm_arch_commit_memory_region 2015-05-28 10:42:58 +02:00
book3s_pr_papr.c kvmppc: Implement H_LOGICAL_CI_{LOAD,STORE} in KVM 2015-04-21 15:21:28 +02:00
book3s_rmhandlers.S KVM: PPC: Book3S PR: Fix ABIv2 on LE 2014-07-28 15:22:15 +02:00
book3s_rtas.c KVM: PPC: RTAS: Do byte swaps explicitly 2014-07-07 23:17:20 +02:00
book3s_segment.S KVM: PPC: Book3S: correct width in XER handling 2015-08-22 11:16:19 +02:00
book3s_xics.c KVM: PPC: Book3S: Fix typo in top comment about locking 2015-09-04 07:28:05 +10:00
book3s_xics.h KVM: PPC: Book3S HV: Add ICP real mode counters 2015-04-21 15:21:30 +02:00
booke.c KVM: add halt_attempted_poll to VCPU stats 2015-09-16 12:17:00 +02:00
booke.h KVM: PPC: Book3e: Add AltiVec support 2014-09-22 10:11:32 +02:00
booke_emulate.c KVM: PPC: BOOKE: Emulate debug registers and exception 2014-09-22 10:11:33 +02:00
booke_interrupts.S KVM: PPC: Remove 440 support 2014-07-28 15:23:15 +02:00
bookehv_interrupts.S powerpc/kvm: common sw breakpoint instr across ppc 2014-09-22 10:11:36 +02:00
e500.c KVM: PPC: e500: fix handling local_sid_lookup result 2015-10-15 15:58:16 +11:00
e500.h KVM: PPC: e500mc: Add support for single threaded vcpus on e6500 core 2014-09-22 10:11:35 +02:00
e500_emulate.c KVM: PPC: e500: Emulate TMCFG0 TMRN register 2015-10-15 15:58:16 +11:00
e500_mmu.c KVM: PPC: fix suspicious use of conditional operator 2015-08-22 11:16:16 +02:00
e500_mmu_host.c powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
e500_mmu_host.h KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static 2013-01-24 19:23:33 +01:00
e500mc.c powerpc: Replace __get_cpu_var uses 2014-11-03 12:12:32 +11:00
emulate.c KVM: PPC: Pass enum to kvmppc_get_last_inst 2014-09-22 10:11:36 +02:00
emulate_loadstore.c KVM: PPC: Pass enum to kvmppc_get_last_inst 2014-09-22 10:11:36 +02:00
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
mpic.c kvm/ppc/mpic: drop unused IRQ_testbit 2015-04-08 10:46:58 +02:00
powerpc.c KVM: PPC: Implement extension to report number of memslots 2015-10-21 16:31:46 +11:00
timing.c KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
timing.h KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
trace.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00
trace_book3s.h KVM: PPC: Book3S HV: Tracepoints for KVM HV guest interactions 2014-12-17 13:29:27 +01:00
trace_booke.h KVM: PPC: BookE: Improve irq inject tracepoint 2014-12-15 13:27:23 +01:00
trace_hv.h KVM: PPC: Book3S HV: Tracepoints for KVM HV guest interactions 2014-12-17 13:29:27 +01:00
trace_pr.h KVM: PPC: Book3S HV: Tracepoints for KVM HV guest interactions 2014-12-17 13:29:27 +01:00