Paul Mackerras 2f2724630f KVM: PPC: Book3S HV: Cope with host using large decrementer mode ... POWER9 introduces a new mode for the decrementer register, called large decrementer mode, in which the decrementer counter is 56 bits wide rather than 32, and reads are sign-extended rather than zero-extended. For the decrementer, this new mode is optional and controlled by a bit in the LPCR. The hypervisor decrementer (HDEC) is 56 bits wide on POWER9 and has no mode control. Since KVM code reads and writes the decrementer and hypervisor decrementer registers in a few places, it needs to be aware of the need to treat the decrementer value as a 64-bit quantity, and only do a 32-bit sign extension when large decrementer mode is not in effect. Similarly, the HDEC should always be treated as a 64-bit quantity on POWER9. We define a new EXTEND_HDEC macro to encapsulate the feature test for POWER9 and the sign extension. To enable the sign extension to be removed in large decrementer mode, we test the LPCR_LD bit in the host LPCR image stored in the struct kvm for the guest. If is set then large decrementer mode is enabled and the sign extension should be skipped. This is partly based on an earlier patch by Oliver O'Halloran. Cc: stable@vger.kernel.org # v4.10+ Signed-off-by: Paul Mackerras <paulus@ozlabs.org>		2017-05-29 16:01:26 +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	* 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: Check for kmalloc errors in ioctl	2017-04-06 15:50:43 +10:00
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: Book3S HV: Add radix checks in real-mode hypercall handlers	2017-05-12 15:08:09 +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	KVM: PPC: Book3S HV: Add radix checks in real-mode hypercall handlers	2017-05-12 15:08:09 +10:00
book3s_hv_hmi.c	powerpc: move hmi.c to arch/powerpc/kvm/	2016-09-09 16:18:07 +10:00
book3s_hv_interrupts.S	KVM: PPC: Book3S HV: Cope with host using large decrementer mode	2017-05-29 16:01:26 +10:00
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 branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD	2017-05-09 11:50:01 +02:00
book3s_hv_rm_xive.c	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
book3s_hv_rmhandlers.S	KVM: PPC: Book3S HV: Cope with host using large decrementer mode	2017-05-29 16:01:26 +10:00
book3s_hv.c	* ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU	2017-05-08 12:37:56 -07:00
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	KVM: PPC: Book3S PR: Don't include SPAPR TCE code on non-pseries platforms	2017-05-12 15:32:30 +10:00
book3s_pr.c	KVM: add kvm_{test,clear}_request to replace {test,clear}_bit	2017-04-27 14:12:22 +02:00
book3s_rmhandlers.S	powerpc: Define and use PPC64_ELF_ABI_v2/v1	2016-06-14 13:58:27 +10:00
book3s_rtas.c	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
book3s_segment.S	KVM: PPC: Book3S: 64-bit CONFIG_RELOCATABLE support for interrupts	2017-01-31 19:07:39 +11:00
book3s_xics.c	Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD	2017-05-09 11:50:01 +02:00
book3s_xics.h	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
book3s_xive_template.c	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
book3s_xive.c	Merge branch 'kvm-ppc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into HEAD	2017-05-09 11:50:01 +02:00
book3s_xive.h	KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
book3s.c	* ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU	2017-05-08 12:37:56 -07:00
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: add kvm_{test,clear}_request to replace {test,clear}_bit	2017-04-27 14:12:22 +02:00
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 HV: Native usage of the XIVE interrupt controller	2017-04-27 21:37:29 +10:00
Kconfig	KVM: PPC: Book3S PR: Don't include SPAPR TCE code on non-pseries platforms	2017-05-12 15:32:30 +10:00
Makefile	KVM: PPC: Book3S PR: Don't include SPAPR TCE code on non-pseries platforms	2017-05-12 15:32:30 +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 PR: Don't include SPAPR TCE code on non-pseries platforms	2017-05-12 15:32:30 +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