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linux/arch/powerpc/kvm
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Alexey Kardashevskiy bd9166ffe6 KVM: PPC: Book3S PR: Exit KVM on failed mapping 
At the moment kvmppc_mmu_map_page() returns -1 if
mmu_hash_ops.hpte_insert() fails for any reason so the page fault handler
resumes the guest and it faults on the same address again.

This adds distinction to kvmppc_mmu_map_page() to return -EIO if
mmu_hash_ops.hpte_insert() failed for a reason other than full pteg.
At the moment only pSeries_lpar_hpte_insert() returns -2 if
plpar_pte_enter() failed with a code other than H_PTEG_FULL.
Other mmu_hash_ops.hpte_insert() instances can only fail with
-1 "full pteg".

With this change, if PR KVM fails to update HPT, it can signal
the userspace about this instead of returning to guest and having
the very same page fault over and over again.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2017-04-20 11:38:04 +10:00
..
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
book3s_32_mmu.c KVM: PPC: Book3S PR: Ratelimit copy data failure error messages 2017-02-17 14:03:35 +11:00
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_sr.S
book3s_64_mmu.c KVM: PPC: Book3S PR: Ratelimit copy data failure error messages 2017-02-17 14:03:35 +11:00
book3s_64_mmu_host.c KVM: PPC: Book3S PR: Exit KVM on failed mapping 2017-04-20 11:38:04 +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_slb.S KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
book3s_64_vio.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Move prototypes for KVM functions into kvm_ppc.h 2016-12-01 14:03:46 +11:00
book3s_emulate.c KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register 2016-09-27 15:14:29 +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.c KVM: PPC: Book3S HV: Use common error handling code in kvmppc_clr_passthru_irq() 2017-04-20 11:37:50 +10:00
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_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.c KVM: PPC: Book3S PR: Exit KVM on failed mapping 2017-04-20 11:38:04 +10:00
book3s_pr_papr.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
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
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
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: rename pfn_t to kvm_pfn_t 2016-01-15 17:56:32 -08:00
e500_emulate.c KVM: PPC: e500: Emulate TMCFG0 TMRN register 2015-10-15 15:58:16 +11:00
e500_mmu.c KVM: PPC: e500: Rename jump labels in kvmppc_e500_tlb_init() 2016-09-13 14:32:47 +10:00
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
e500mc.c powerpc: Fix misspellings in comments. 2016-03-01 19:27:20 +11:00
emulate.c KVM: PPC: Book3S PR: Fix illegal opcode emulation 2016-06-20 14:11:25 +10:00
emulate_loadstore.c KVM: PPC: Add MMIO emulation for remaining floating-point instructions 2017-04-20 11:37:44 +10:00
fpu.S
irq.h KVM: PPC: Book3S: Add API for in-kernel XICS emulation 2013-05-02 15:28:36 +02:00
Kconfig KVM: PPC: select IRQ_BYPASS_MANAGER 2016-09-09 16:26:19 +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: Book3S: Add MMIO emulation for FP and VSX instructions 2017-04-20 11:36:41 +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.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: 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