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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-03 16:13:19 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-03 16:13:19 (GMT) |
commit | 8546dc1d4b671480961c3eaf4c0c102ae6848340 (patch) | |
tree | c646079fb48811b22b742deb6bd2e907f9e6c3d4 /arch/arm/include/asm/kvm_host.h | |
parent | 9992ba72327fa0d8bdc9fb624e80f5cce338a711 (diff) | |
parent | 33b9f582c5c1db515412cc7efff28f7d1779321f (diff) | |
download | linux-8546dc1d4b671480961c3eaf4c0c102ae6848340.tar.xz |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
"The major items included in here are:
- MCPM, multi-cluster power management, part of the infrastructure
required for ARMs big.LITTLE support.
- A rework of the ARM KVM code to allow re-use by ARM64.
- Error handling cleanups of the IS_ERR_OR_NULL() madness and fixes
of that stuff for arch/arm
- Preparatory patches for Cortex-M3 support from Uwe Kleine-König.
There is also a set of three patches in here from Hugh/Catalin to
address freeing of inappropriate page tables on LPAE. You already
have these from akpm, but they were already part of my tree at the
time he sent them, so unfortunately they'll end up with duplicate
commits"
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (77 commits)
ARM: EXYNOS: remove unnecessary use of IS_ERR_VALUE()
ARM: IMX: remove unnecessary use of IS_ERR_VALUE()
ARM: OMAP: use consistent error checking
ARM: cleanup: OMAP hwmod error checking
ARM: 7709/1: mcpm: Add explicit AFLAGS to support v6/v7 multiplatform kernels
ARM: 7700/2: Make cpu_init() notrace
ARM: 7702/1: Set the page table freeing ceiling to TASK_SIZE
ARM: 7701/1: mm: Allow arch code to control the user page table ceiling
ARM: 7703/1: Disable preemption in broadcast_tlb*_a15_erratum()
ARM: mcpm: provide an interface to set the SMP ops at run time
ARM: mcpm: generic SMP secondary bringup and hotplug support
ARM: mcpm_head.S: vlock-based first man election
ARM: mcpm: Add baremetal voting mutexes
ARM: mcpm: introduce helpers for platform coherency exit/setup
ARM: mcpm: introduce the CPU/cluster power API
ARM: multi-cluster PM: secondary kernel entry code
ARM: cacheflush: add synchronization helpers for mixed cache state accesses
ARM: cpu hotplug: remove majority of cache flushing from platforms
ARM: smp: flush L1 cache in cpu_die()
ARM: tegra: remove tegra specific cpu_disable()
...
Diffstat (limited to 'arch/arm/include/asm/kvm_host.h')
-rw-r--r-- | arch/arm/include/asm/kvm_host.h | 42 |
1 files changed, 34 insertions, 8 deletions
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index d1736a5..0c4e643 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -80,6 +80,15 @@ struct kvm_mmu_memory_cache { void *objects[KVM_NR_MEM_OBJS]; }; +struct kvm_vcpu_fault_info { + u32 hsr; /* Hyp Syndrome Register */ + u32 hxfar; /* Hyp Data/Inst. Fault Address Register */ + u32 hpfar; /* Hyp IPA Fault Address Register */ + u32 hyp_pc; /* PC when exception was taken from Hyp mode */ +}; + +typedef struct vfp_hard_struct kvm_kernel_vfp_t; + struct kvm_vcpu_arch { struct kvm_regs regs; @@ -93,13 +102,11 @@ struct kvm_vcpu_arch { u32 midr; /* Exception Information */ - u32 hsr; /* Hyp Syndrome Register */ - u32 hxfar; /* Hyp Data/Inst Fault Address Register */ - u32 hpfar; /* Hyp IPA Fault Address Register */ + struct kvm_vcpu_fault_info fault; /* Floating point registers (VFP and Advanced SIMD/NEON) */ - struct vfp_hard_struct vfp_guest; - struct vfp_hard_struct *vfp_host; + kvm_kernel_vfp_t vfp_guest; + kvm_kernel_vfp_t *vfp_host; /* VGIC state */ struct vgic_cpu vgic_cpu; @@ -122,9 +129,6 @@ struct kvm_vcpu_arch { /* Interrupt related fields */ u32 irq_lines; /* IRQ and FIQ levels */ - /* Hyp exception information */ - u32 hyp_pc; /* PC when exception was taken from Hyp mode */ - /* Cache some mmu pages needed inside spinlock regions */ struct kvm_mmu_memory_cache mmu_page_cache; @@ -181,4 +185,26 @@ struct kvm_one_reg; int kvm_arm_coproc_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); int kvm_arm_coproc_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); +int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, + int exception_index); + +static inline void __cpu_init_hyp_mode(unsigned long long pgd_ptr, + unsigned long hyp_stack_ptr, + unsigned long vector_ptr) +{ + unsigned long pgd_low, pgd_high; + + pgd_low = (pgd_ptr & ((1ULL << 32) - 1)); + pgd_high = (pgd_ptr >> 32ULL); + + /* + * Call initialization code, and switch to the full blown + * HYP code. The init code doesn't need to preserve these registers as + * r1-r3 and r12 are already callee save according to the AAPCS. + * Note that we slightly misuse the prototype by casing the pgd_low to + * a void *. + */ + kvm_call_hyp((void *)pgd_low, pgd_high, hyp_stack_ptr, vector_ptr); +} + #endif /* __ARM_KVM_HOST_H__ */ |