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db4b0dfab7
linux/arch/powerpc/kvm
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Denis Kirjanov db4b0dfab7 KVM: PPC: Book3S HV: Avoid preemptibility warning in module initialization 
With CONFIG_DEBUG_PREEMPT, get_paca() produces the following warning
in kvmppc_book3s_init_hv() since it calls debug_smp_processor_id().

There is no real issue with the xics_phys field.
If paca->kvm_hstate.xics_phys is non-zero on one cpu, it will be
non-zero on them all.  Therefore this is not fixing any actual
problem, just the warning.

[  138.521188] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/5596
[  138.521308] caller is .kvmppc_book3s_init_hv+0x184/0x350 [kvm_hv]
[  138.521404] CPU: 5 PID: 5596 Comm: modprobe Not tainted 4.11.0-rc3-00022-gc7e790c #1
[  138.521509] Call Trace:
[  138.521563] [c0000007d018b810] [c0000000023eef10] .dump_stack+0xe4/0x150 (unreliable)
[  138.521694] [c0000007d018b8a0] [c000000001f6ec04] .check_preemption_disabled+0x134/0x150
[  138.521829] [c0000007d018b940] [d00000000a010274] .kvmppc_book3s_init_hv+0x184/0x350 [kvm_hv]
[  138.521963] [c0000007d018ba00] [c00000000191d5cc] .do_one_initcall+0x5c/0x1c0
[  138.522082] [c0000007d018bad0] [c0000000023e9494] .do_init_module+0x84/0x240
[  138.522201] [c0000007d018bb70] [c000000001aade18] .load_module+0x1f68/0x2a10
[  138.522319] [c0000007d018bd20] [c000000001aaeb30] .SyS_finit_module+0xc0/0xf0
[  138.522439] [c0000007d018be30] [c00000000191baec] system_call+0x38/0xfc

Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2017-04-28 08:21:51 +10:00
..
book3s_32_mmu_host.c powerpc/mm: Move hash related mmu-*.h headers to book3s/ 2016-03-03 21:19:21 +11:00
book3s_32_mmu.c KVM: PPC: Book3S PR: Ratelimit copy data failure error messages 2017-02-17 14:03:35 +11:00
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: PPC: Book3S PR: Preserve storage control bits 2017-04-20 11:38:14 +10:00
book3s_64_mmu_hv.c power/mm: update pte_write and pte_wrprotect to handle savedwrite 2017-03-09 17:01:09 -08:00
book3s_64_mmu_radix.c KVM: PPC: Book3S HV: Fix software walk of guest process page tables 2017-03-01 11:53:45 +11:00
book3s_64_mmu.c KVM: PPC: Book3S PR: Preserve storage control bits 2017-04-20 11:38:14 +10:00
book3s_64_slb.S KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
book3s_64_vio_hv.c KVM: PPC: VFIO: Add in-kernel acceleration for VFIO 2017-04-20 11:39:26 +10:00
book3s_64_vio.c KVM: PPC: VFIO: Add in-kernel acceleration for VFIO 2017-04-20 11:39:26 +10:00
book3s_emulate.c KVM: PPC: Book3S PR: Do not fail emulation with mtspr/mfspr for unknown SPRs 2017-04-20 11:39:32 +10:00
book3s_exports.c KVM: PPC: Make shared struct aka magic page guest endian 2014-05-30 14:26:21 +02:00
book3s_hv_builtin.c mm: cma_alloc: allow to specify GFP mask 2017-02-24 17:46:55 -08:00
book3s_hv_hmi.c powerpc: move hmi.c to arch/powerpc/kvm/ 2016-09-09 16:18:07 +10:00
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 KVM: PPC: Book3S: Move prototypes for KVM functions into kvm_ppc.h 2016-12-01 14:03:46 +11:00
book3s_hv_rm_mmu.c power/mm: update pte_write and pte_wrprotect to handle savedwrite 2017-03-09 17:01:09 -08:00
book3s_hv_rm_xics.c Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next 2017-02-08 19:35:34 +11:00
book3s_hv_rmhandlers.S KVM: PPC: Book3S HV: Don't use ASDR for real-mode HPT faults on POWER9 2017-03-01 11:54:10 +11:00
book3s_hv.c KVM: PPC: Book3S HV: Avoid preemptibility warning in module initialization 2017-04-28 08:21:51 +10:00
book3s_interrupts.S powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
book3s_mmu_hpte.c sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h> 2017-03-02 08:42:38 +01:00
book3s_paired_singles.c powerpc: Create disable_kernel_{fp,altivec,vsx,spe}() 2015-12-01 13:52:25 +11:00
book3s_pr_papr.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
book3s_pr.c KVM: PPC: Book3S PR: Preserve storage control bits 2017-04-20 11:38:14 +10:00
book3s_rmhandlers.S powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14 13:58:27 +10:00
book3s_rtas.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
book3s_segment.S KVM: PPC: Book3S: 64-bit CONFIG_RELOCATABLE support for interrupts 2017-01-31 19:07:39 +11:00
book3s_xics.c KVM: PPC: Book 3S: XICS: Don't lock twice when checking for resend 2017-01-27 10:27:21 +11:00
book3s_xics.h KVM: PPC: Book 3S: XICS: Implement ICS P/Q states 2017-01-27 10:27:02 +11:00
book3s.c KVM: PPC: Provide functions for queueing up FP/VEC/VSX unavailable interrupts 2017-04-20 10:39:50 +10:00
book3s.h kvm: Fix page ageing bugs 2014-09-24 14:07:58 +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
booke.c KVM: PPC: Provide functions for queueing up FP/VEC/VSX unavailable interrupts 2017-04-20 10:39:50 +10:00
booke.h KVM: PPC: Book3e: Add AltiVec support 2014-09-22 10:11:32 +02:00
bookehv_interrupts.S powerpc/kvm: common sw breakpoint instr across ppc 2014-09-22 10:11:36 +02:00
e500_emulate.c KVM: PPC: e500: Emulate TMCFG0 TMRN register 2015-10-15 15:58:16 +11:00
e500_mmu_host.c KVM: PPC: e500: Use kcalloc() in e500_mmu_host_init() 2017-04-20 11:37:55 +10:00
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: Rename jump labels in kvmppc_e500_tlb_init() 2016-09-13 14:32:47 +10:00
e500.c KVM: PPC: e500: fix handling local_sid_lookup result 2015-10-15 15:58:16 +11:00
e500.h kvm: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
e500mc.c powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
emulate_loadstore.c KVM: PPC: Add MMIO emulation for remaining floating-point instructions 2017-04-20 11:37:44 +10:00
emulate.c KVM: PPC: Book3S PR: Do not fail emulation with mtspr/mfspr for unknown SPRs 2017-04-20 11:39:32 +10:00
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 KVM: PPC: Enable IOMMU_API for KVM_BOOK3S_64 permanently 2017-04-20 11:39:07 +10:00
Makefile KVM: PPC: Book3S HV: Add basic infrastructure for radix guests 2017-01-31 19:11:48 +11:00
mpic.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
powerpc.c KVM: PPC: VFIO: Add in-kernel acceleration for VFIO 2017-04-20 11:39:26 +10:00
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_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: Comment style and print format fixups 2016-11-28 11:48:47 +11:00
trace_pr.h kvm: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
trace.h kvm: powerpc: booke: Move booke related tracepoints to separate header 2013-10-17 15:37:16 +02:00