Nicholas Piggin 6de6638b35 KVM: PPC: Book3S HV: Handle host system reset in guest mode ... If the host takes a system reset interrupt while a guest is running, the CPU must exit the guest before processing the host exception handler. After this patch, taking a sysrq+x with a CPU running in a guest gives a trace like this: cpu 0x27: Vector: 100 (System Reset) at [c000000fdf5776f0] pc: c008000010158b80: kvmppc_run_core+0x16b8/0x1ad0 [kvm_hv] lr: c008000010158b80: kvmppc_run_core+0x16b8/0x1ad0 [kvm_hv] sp: c000000fdf577850 msr: 9000000002803033 current = 0xc000000fdf4b1e00 paca = 0xc00000000fd4d680 softe: 3 irq_happened: 0x01 pid = 6608, comm = qemu-system-ppc Linux version 4.14.0-rc7-01489-g47e1893a404a-dirty #26 SMP [c000000fdf577a00] c008000010159dd4 kvmppc_vcpu_run_hv+0x3dc/0x12d0 [kvm_hv] [c000000fdf577b30] c0080000100a537c kvmppc_vcpu_run+0x44/0x60 [kvm] [c000000fdf577b60] c0080000100a1ae0 kvm_arch_vcpu_ioctl_run+0x118/0x310 [kvm] [c000000fdf577c00] c008000010093e98 kvm_vcpu_ioctl+0x530/0x7c0 [kvm] [c000000fdf577d50] c000000000357bf8 do_vfs_ioctl+0xd8/0x8c0 [c000000fdf577df0] c000000000358448 SyS_ioctl+0x68/0x100 [c000000fdf577e30] c00000000000b220 system_call+0x58/0x6c --- Exception: c01 (System Call) at 00007fff76868df0 SP (7fff7069baf0) is in userspace Fixes: e36d0a2ed5 ("powerpc/powernv: Implement NMI IPI with OPAL_SIGNAL_SYSTEM_RESET") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-11-06 16:48:06 +11:00
..
book3s_32_mmu_host.c
book3s_32_mmu.c
book3s_32_sr.S
book3s_64_mmu_host.c
book3s_64_mmu_hv.c
book3s_64_mmu_radix.c
book3s_64_mmu.c
book3s_64_slb.S
book3s_64_vio_hv.c
book3s_64_vio.c
book3s_emulate.c
book3s_exports.c
book3s_hv_builtin.c
book3s_hv_hmi.c
book3s_hv_interrupts.S
book3s_hv_ras.c
book3s_hv_rm_mmu.c
book3s_hv_rm_xics.c
book3s_hv_rm_xive.c	KVM: PPC: Book3S HV: Don't access XIVE PIPR register using byte accesses	2017-09-12 16:02:07 +10:00
book3s_hv_rmhandlers.S	Revert "KVM: PPC: Book3S HV: POWER9 does not require secondary thread management"	2017-10-19 15:28:04 +11:00
book3s_hv.c	KVM: PPC: Book3S HV: Handle host system reset in guest mode	2017-11-06 16:48:06 +11:00
book3s_interrupts.S
book3s_mmu_hpte.c
book3s_paired_singles.c
book3s_pr_papr.c
book3s_pr.c
book3s_rmhandlers.S
book3s_rtas.c
book3s_segment.S
book3s_xics.c
book3s_xics.h
book3s_xive_template.c	KVM: PPC: Book3S HV: Don't access XIVE PIPR register using byte accesses	2017-09-12 16:02:07 +10:00
book3s_xive.c	KVM: PPC: Book3S HV: Don't access XIVE PIPR register using byte accesses	2017-09-12 16:02:07 +10:00
book3s_xive.h
book3s.c
book3s.h
booke_emulate.c
booke_interrupts.S
booke.c
booke.h
bookehv_interrupts.S
e500_emulate.c
e500_mmu_host.c
e500_mmu_host.h
e500_mmu.c
e500.c
e500.h
e500mc.c
emulate_loadstore.c
emulate.c
fpu.S
irq.h
Kconfig
Makefile
mpic.c
powerpc.c	KVM: PPC: Tie KVM_CAP_PPC_HTM to the user-visible TM feature	2017-10-20 11:09:26 +11:00
timing.c
timing.h
trace_book3s.h
trace_booke.h
trace_hv.h
trace_pr.h
trace.h