mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-19 09:04:57 +00:00
15303ba5d1
ARM:
- Include icache invalidation optimizations, improving VM startup time
- Support for forwarded level-triggered interrupts, improving
performance for timers and passthrough platform devices
- A small fix for power-management notifiers, and some cosmetic changes
PPC:
- Add MMIO emulation for vector loads and stores
- Allow HPT guests to run on a radix host on POWER9 v2.2 CPUs without
requiring the complex thread synchronization of older CPU versions
- Improve the handling of escalation interrupts with the XIVE interrupt
controller
- Support decrement register migration
- Various cleanups and bugfixes.
s390:
- Cornelia Huck passed maintainership to Janosch Frank
- Exitless interrupts for emulated devices
- Cleanup of cpuflag handling
- kvm_stat counter improvements
- VSIE improvements
- mm cleanup
x86:
- Hypervisor part of SEV
- UMIP, RDPID, and MSR_SMI_COUNT emulation
- Paravirtualized TLB shootdown using the new KVM_VCPU_PREEMPTED bit
- Allow guests to see TOPOEXT, GFNI, VAES, VPCLMULQDQ, and more AVX512
features
- Show vcpu id in its anonymous inode name
- Many fixes and cleanups
- Per-VCPU MSR bitmaps (already merged through x86/pti branch)
- Stable KVM clock when nesting on Hyper-V (merged through x86/hyperv)
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Merge tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"ARM:
- icache invalidation optimizations, improving VM startup time
- support for forwarded level-triggered interrupts, improving
performance for timers and passthrough platform devices
- a small fix for power-management notifiers, and some cosmetic
changes
PPC:
- add MMIO emulation for vector loads and stores
- allow HPT guests to run on a radix host on POWER9 v2.2 CPUs without
requiring the complex thread synchronization of older CPU versions
- improve the handling of escalation interrupts with the XIVE
interrupt controller
- support decrement register migration
- various cleanups and bugfixes.
s390:
- Cornelia Huck passed maintainership to Janosch Frank
- exitless interrupts for emulated devices
- cleanup of cpuflag handling
- kvm_stat counter improvements
- VSIE improvements
- mm cleanup
x86:
- hypervisor part of SEV
- UMIP, RDPID, and MSR_SMI_COUNT emulation
- paravirtualized TLB shootdown using the new KVM_VCPU_PREEMPTED bit
- allow guests to see TOPOEXT, GFNI, VAES, VPCLMULQDQ, and more
AVX512 features
- show vcpu id in its anonymous inode name
- many fixes and cleanups
- per-VCPU MSR bitmaps (already merged through x86/pti branch)
- stable KVM clock when nesting on Hyper-V (merged through
x86/hyperv)"
* tag 'kvm-4.16-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (197 commits)
KVM: PPC: Book3S: Add MMIO emulation for VMX instructions
KVM: PPC: Book3S HV: Branch inside feature section
KVM: PPC: Book3S HV: Make HPT resizing work on POWER9
KVM: PPC: Book3S HV: Fix handling of secondary HPTEG in HPT resizing code
KVM: PPC: Book3S PR: Fix broken select due to misspelling
KVM: x86: don't forget vcpu_put() in kvm_arch_vcpu_ioctl_set_sregs()
KVM: PPC: Book3S PR: Fix svcpu copying with preemption enabled
KVM: PPC: Book3S HV: Drop locks before reading guest memory
kvm: x86: remove efer_reload entry in kvm_vcpu_stat
KVM: x86: AMD Processor Topology Information
x86/kvm/vmx: do not use vm-exit instruction length for fast MMIO when running nested
kvm: embed vcpu id to dentry of vcpu anon inode
kvm: Map PFN-type memory regions as writable (if possible)
x86/kvm: Make it compile on 32bit and with HYPYERVISOR_GUEST=n
KVM: arm/arm64: Fixup userspace irqchip static key optimization
KVM: arm/arm64: Fix userspace_irqchip_in_use counting
KVM: arm/arm64: Fix incorrect timer_is_pending logic
MAINTAINERS: update KVM/s390 maintainers
MAINTAINERS: add Halil as additional vfio-ccw maintainer
MAINTAINERS: add David as a reviewer for KVM/s390
...
138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*
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* Copyright 2016,2017 IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _ASM_POWERPC_XIVE_H
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#define _ASM_POWERPC_XIVE_H
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#define XIVE_INVALID_VP 0xffffffff
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#ifdef CONFIG_PPC_XIVE
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/*
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* Thread Interrupt Management Area (TIMA)
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*
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* This is a global MMIO region divided in 4 pages of varying access
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* permissions, providing access to per-cpu interrupt management
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* functions. It always identifies the CPU doing the access based
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* on the PowerBus initiator ID, thus we always access via the
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* same offset regardless of where the code is executing
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*/
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extern void __iomem *xive_tima;
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/*
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* Offset in the TM area of our current execution level (provided by
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* the backend)
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*/
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extern u32 xive_tima_offset;
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/*
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* Per-irq data (irq_get_handler_data for normal IRQs), IPIs
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* have it stored in the xive_cpu structure. We also cache
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* for normal interrupts the current target CPU.
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*
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* This structure is setup by the backend for each interrupt.
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*/
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struct xive_irq_data {
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u64 flags;
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u64 eoi_page;
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void __iomem *eoi_mmio;
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u64 trig_page;
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void __iomem *trig_mmio;
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u32 esb_shift;
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int src_chip;
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u32 hw_irq;
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/* Setup/used by frontend */
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int target;
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bool saved_p;
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};
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#define XIVE_IRQ_FLAG_STORE_EOI 0x01
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#define XIVE_IRQ_FLAG_LSI 0x02
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#define XIVE_IRQ_FLAG_SHIFT_BUG 0x04
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#define XIVE_IRQ_FLAG_MASK_FW 0x08
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#define XIVE_IRQ_FLAG_EOI_FW 0x10
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#define XIVE_IRQ_FLAG_H_INT_ESB 0x20
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/* Special flag set by KVM for excalation interrupts */
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#define XIVE_IRQ_NO_EOI 0x80
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#define XIVE_INVALID_CHIP_ID -1
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/* A queue tracking structure in a CPU */
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struct xive_q {
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__be32 *qpage;
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u32 msk;
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u32 idx;
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u32 toggle;
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u64 eoi_phys;
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u32 esc_irq;
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atomic_t count;
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atomic_t pending_count;
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};
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/* Global enable flags for the XIVE support */
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extern bool __xive_enabled;
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static inline bool xive_enabled(void) { return __xive_enabled; }
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extern bool xive_spapr_init(void);
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extern bool xive_native_init(void);
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extern void xive_smp_probe(void);
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extern int xive_smp_prepare_cpu(unsigned int cpu);
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extern void xive_smp_setup_cpu(void);
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extern void xive_smp_disable_cpu(void);
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extern void xive_teardown_cpu(void);
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extern void xive_kexec_teardown_cpu(int secondary);
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extern void xive_shutdown(void);
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extern void xive_flush_interrupt(void);
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/* xmon hook */
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extern void xmon_xive_do_dump(int cpu);
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/* APIs used by KVM */
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extern u32 xive_native_default_eq_shift(void);
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extern u32 xive_native_alloc_vp_block(u32 max_vcpus);
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extern void xive_native_free_vp_block(u32 vp_base);
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extern int xive_native_populate_irq_data(u32 hw_irq,
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struct xive_irq_data *data);
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extern void xive_cleanup_irq_data(struct xive_irq_data *xd);
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extern u32 xive_native_alloc_irq(void);
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extern void xive_native_free_irq(u32 irq);
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extern int xive_native_configure_irq(u32 hw_irq, u32 target, u8 prio, u32 sw_irq);
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extern int xive_native_configure_queue(u32 vp_id, struct xive_q *q, u8 prio,
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__be32 *qpage, u32 order, bool can_escalate);
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extern void xive_native_disable_queue(u32 vp_id, struct xive_q *q, u8 prio);
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extern void xive_native_sync_source(u32 hw_irq);
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extern bool is_xive_irq(struct irq_chip *chip);
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extern int xive_native_enable_vp(u32 vp_id, bool single_escalation);
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extern int xive_native_disable_vp(u32 vp_id);
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extern int xive_native_get_vp_info(u32 vp_id, u32 *out_cam_id, u32 *out_chip_id);
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extern bool xive_native_has_single_escalation(void);
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#else
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static inline bool xive_enabled(void) { return false; }
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static inline bool xive_spapr_init(void) { return false; }
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static inline bool xive_native_init(void) { return false; }
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static inline void xive_smp_probe(void) { }
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static inline int xive_smp_prepare_cpu(unsigned int cpu) { return -EINVAL; }
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static inline void xive_smp_setup_cpu(void) { }
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static inline void xive_smp_disable_cpu(void) { }
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static inline void xive_kexec_teardown_cpu(int secondary) { }
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static inline void xive_shutdown(void) { }
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static inline void xive_flush_interrupt(void) { }
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static inline u32 xive_native_alloc_vp_block(u32 max_vcpus) { return XIVE_INVALID_VP; }
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static inline void xive_native_free_vp_block(u32 vp_base) { }
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#endif
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#endif /* _ASM_POWERPC_XIVE_H */
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