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5422e95103
linux_dsm_epyc7002/arch/powerpc/kvm
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Cédric Le Goater 5422e95103 KVM: PPC: Book3S HV: XIVE: Replace the 'destroy' method by a 'release' method 
When a P9 sPAPR VM boots, the CAS negotiation process determines which
interrupt mode to use (XICS legacy or XIVE native) and invokes a
machine reset to activate the chosen mode.

We introduce 'release' methods for the XICS-on-XIVE and the XIVE
native KVM devices which are called when the file descriptor of the
device is closed after the TIMA and ESB pages have been unmapped.
They perform the necessary cleanups : clear the vCPU interrupt
presenters that could be attached and then destroy the device. The
'release' methods replace the 'destroy' methods as 'destroy' is not
called anymore once 'release' is. Compatibility with older QEMU is
nevertheless maintained.

This is not considered as a safe operation as the vCPUs are still
running and could be referencing the KVM device through their
presenters. To protect the system from any breakage, the kvmppc_xive
objects representing both KVM devices are now stored in an array under
the VM. Allocation is performed on first usage and memory is freed
only when the VM exits.

[paulus@ozlabs.org - Moved freeing of xive structures to book3s.c,
 put it under #ifdef CONFIG_KVM_XICS.]

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2019-04-30 19:40:39 +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: Add emulation for slbfee. instruction 2019-02-19 14:25:52 +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 * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU 2017-05-08 12:37:56 -07:00
book3s_64_mmu_hv.c KVM: PPC: Book3S HV: Optimise mmio emulation for devices on FAST_MMIO_BUS 2019-02-19 16:00:15 +11:00
book3s_64_mmu_radix.c KVM: PPC: Book3S HV: Add KVM stat largepages_[2M/1G] 2019-02-19 16:00:15 +11:00
book3s_64_mmu.c KVM: PPC: Book3S PR: Add emulation for slbfee. instruction 2019-02-19 14:25:52 +11:00
book3s_64_slb.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
book3s_64_vio_hv.c KVM: PPC: Book3S: Allocate guest TCEs on demand too 2019-04-30 14:43:13 +10:00
book3s_64_vio.c KVM: PPC: Book3S: Allocate guest TCEs on demand too 2019-04-30 14:43:13 +10:00
book3s_emulate.c KVM: PPC: Book3S PR: Add emulation for slbfee. instruction 2019-02-19 14:25:52 +11:00
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 KVM: PPC: Book3S HV: Flush TLB on secondary radix threads 2019-04-30 19:32:12 +10:00
book3s_hv_hmi.c powerpc: Avoid circular header inclusion in mmu-hash.h 2019-02-23 22:31:39 +11:00
book3s_hv_interrupts.S KVM: PPC: Book3S HV: Extract PMU save/restore operations as C-callable functions 2018-10-09 16:04:27 +11:00
book3s_hv_nested.c KVM: PPC: Book3S HV: Introduce kvmhv_update_nest_rmap_rc_list() 2018-12-21 14:39:35 +11:00
book3s_hv_ras.c KVM: PPC: Book3S HV: Simplify machine check handling 2019-02-21 23:16:44 +11:00
book3s_hv_rm_mmu.c KVM: PPC: Book3S HV: Implement real mode H_PAGE_INIT handler 2019-04-30 14:43:12 +10:00
book3s_hv_rm_xics.c KVM: PPC: Book3S: Allow XICS emulation to work in nested hosts using XIVE 2019-02-19 16:00:15 +11:00
book3s_hv_rm_xive.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
book3s_hv_rmhandlers.S Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next 2019-04-30 19:32:47 +10:00
book3s_hv_tm_builtin.c KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2018-10-09 16:04:27 +11:00
book3s_hv_tm.c KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2018-10-09 16:04:27 +11:00
book3s_hv.c Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next 2019-04-30 19:32:47 +10:00
book3s_interrupts.S powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +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 KVM: PPC: Book3S PR: Enable in-kernel TCE handlers for PR KVM 2017-10-14 16:38:19 +11:00
book3s_pr.c KVM: PPC: Pass change type down to memslot commit function 2018-12-17 10:57:27 +11:00
book3s_rmhandlers.S powerpc: move ASM_CONST and stringify_in_c() into asm-const.h 2018-07-30 22:48:16 +10:00
book3s_rtas.c KVM: PPC: Book3S: Allow XICS emulation to work in nested hosts using XIVE 2019-02-19 16:00:15 +11:00
book3s_segment.S powerpc: clean inclusions of asm/feature-fixups.h 2018-07-30 22:48:17 +10:00
book3s_xics.c KVM: PPC: Book3S HV: Change to use DEFINE_SHOW_ATTRIBUTE macro 2018-12-14 15:39:47 +11:00
book3s_xics.h KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller 2017-04-27 21:37:29 +10:00
book3s_xive_native.c KVM: PPC: Book3S HV: XIVE: Replace the 'destroy' method by a 'release' method 2019-04-30 19:40:39 +10:00
book3s_xive_template.c KVM: PPC: Book3S HV: Fix XICS-on-XIVE H_IPI when priority = 0 2019-04-30 19:29:23 +10:00
book3s_xive.c KVM: PPC: Book3S HV: XIVE: Replace the 'destroy' method by a 'release' method 2019-04-30 19:40:39 +10:00
book3s_xive.h KVM: PPC: Book3S HV: XIVE: Replace the 'destroy' method by a 'release' method 2019-04-30 19:40:39 +10:00
book3s.c KVM: PPC: Book3S HV: XIVE: Replace the 'destroy' method by a 'release' method 2019-04-30 19:40:39 +10:00
book3s.h KVM: PPC: Book3S PR: Add guard code to prevent returning to guest with PR=0 and Transactional state 2018-06-01 10:30:39 +10:00
booke_emulate.c KVM: PPC: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch 2018-05-18 15:38:23 +10:00
booke_interrupts.S KVM: PPC: Remove 440 support 2014-07-28 15:23:15 +02:00
booke.c KVM: PPC: Pass change type down to memslot commit function 2018-12-17 10:57:27 +11:00
booke.h KVM: PPC: Book3e: Add AltiVec support 2014-09-22 10:11:32 +02:00
bookehv_interrupts.S powerpc/fsl: Flush branch predictor when entering KVM 2018-12-20 22:59:03 +11:00
e500_emulate.c powerpc/fsl: Emulate SPRN_BUCSR register 2018-12-20 22:59:03 +11:00
e500_mmu_host.c KVM: Make kvm_set_spte_hva() return int 2018-12-21 11:28:41 +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: Move nip/ctr/lr/xer registers to pt_regs in kvm_vcpu_arch 2018-05-18 15:38:23 +10:00
e500.c powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
e500.h powerpc/mm: move platform specific mmu-xxx.h in platform directories 2018-12-04 19:45:01 +11:00
e500mc.c powerpc: remove unnecessary inclusion of asm/tlbflush.h 2018-07-30 22:48:20 +10:00
emulate_loadstore.c KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct 2018-10-09 16:04:27 +11:00
emulate.c KVM: PPC: Use exported tb_to_ns() function in decrementer emulation 2018-10-26 21:58:58 +11:00
fpu.S powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} 2010-09-02 14:07:32 +10:00
irq.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig treewide: surround Kconfig file paths with double quotes 2018-12-22 00:25:54 +09:00
Makefile KVM: PPC: Book3S HV: Add a new KVM device for the XIVE native exploitation mode 2019-04-30 19:35:16 +10:00
mpic.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
powerpc.c KVM: PPC: Book3S HV: XIVE: Activate XIVE exploitation mode 2019-04-30 19:35:16 +10:00
timing.c KVM: PPC: Use seq_puts() in kvmppc_exit_timing_show() 2018-01-11 20:36:06 +11:00
timing.h KVM: PPC: Remove DCR handling 2014-07-28 19:29:15 +02:00
tm.S KVM: PPC: Book3S: Rework TM save/restore code and make it C-callable 2018-10-09 16:04:27 +11:00
trace_book3s.h KVM: PPC: Book3S: Simplify external interrupt handling 2018-10-09 16:04:27 +11:00
trace_booke.h KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE 2018-11-07 23:04:38 +11:00
trace_hv.h KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE 2018-11-07 23:04:38 +11:00
trace_pr.h KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE 2018-11-07 23:04:38 +11:00
trace.h KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE 2018-11-07 23:04:38 +11:00