diff options
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/el2_setup.h | 31 | ||||
| -rw-r--r-- | arch/arm64/include/asm/hugetlb.h | 26 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_arm.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_emulate.h | 42 | ||||
| -rw-r--r-- | arch/arm64/include/asm/kvm_host.h | 26 |
5 files changed, 52 insertions, 75 deletions
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h index 25e162651750..555c613fd232 100644 --- a/arch/arm64/include/asm/el2_setup.h +++ b/arch/arm64/include/asm/el2_setup.h @@ -16,6 +16,32 @@ #include <asm/sysreg.h> #include <linux/irqchip/arm-gic-v3.h> +.macro init_el2_hcr val + mov_q x0, \val + + /* + * Compliant CPUs advertise their VHE-onlyness with + * ID_AA64MMFR4_EL1.E2H0 < 0. On such CPUs HCR_EL2.E2H is RES1, but it + * can reset into an UNKNOWN state and might not read as 1 until it has + * been initialized explicitly. + * + * Fruity CPUs seem to have HCR_EL2.E2H set to RAO/WI, but + * don't advertise it (they predate this relaxation). + * + * Initalize HCR_EL2.E2H so that later code can rely upon HCR_EL2.E2H + * indicating whether the CPU is running in E2H mode. + */ + mrs_s x1, SYS_ID_AA64MMFR4_EL1 + sbfx x1, x1, #ID_AA64MMFR4_EL1_E2H0_SHIFT, #ID_AA64MMFR4_EL1_E2H0_WIDTH + cmp x1, #0 + b.ge .LnVHE_\@ + + orr x0, x0, #HCR_E2H +.LnVHE_\@: + msr hcr_el2, x0 + isb +.endm + .macro __init_el2_sctlr mov_q x0, INIT_SCTLR_EL2_MMU_OFF msr sctlr_el2, x0 @@ -244,11 +270,6 @@ .Lskip_gcs_\@: .endm -.macro __init_el2_nvhe_prepare_eret - mov x0, #INIT_PSTATE_EL1 - msr spsr_el2, x0 -.endm - .macro __init_el2_mpam /* Memory Partitioning And Monitoring: disable EL2 traps */ mrs x1, id_aa64pfr0_el1 diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h index c6dff3e69539..07fbf5bf85a7 100644 --- a/arch/arm64/include/asm/hugetlb.h +++ b/arch/arm64/include/asm/hugetlb.h @@ -42,8 +42,8 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte, int dirty); #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR -extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm, - unsigned long addr, pte_t *ptep); +extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, unsigned long sz); #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT extern void huge_ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep); @@ -76,12 +76,22 @@ static inline void flush_hugetlb_tlb_range(struct vm_area_struct *vma, { unsigned long stride = huge_page_size(hstate_vma(vma)); - if (stride == PMD_SIZE) - __flush_tlb_range(vma, start, end, stride, false, 2); - else if (stride == PUD_SIZE) - __flush_tlb_range(vma, start, end, stride, false, 1); - else - __flush_tlb_range(vma, start, end, PAGE_SIZE, false, 0); + switch (stride) { +#ifndef __PAGETABLE_PMD_FOLDED + case PUD_SIZE: + __flush_tlb_range(vma, start, end, PUD_SIZE, false, 1); + break; +#endif + case CONT_PMD_SIZE: + case PMD_SIZE: + __flush_tlb_range(vma, start, end, PMD_SIZE, false, 2); + break; + case CONT_PTE_SIZE: + __flush_tlb_range(vma, start, end, PAGE_SIZE, false, 3); + break; + default: + __flush_tlb_range(vma, start, end, PAGE_SIZE, false, TLBI_TTL_UNKNOWN); + } } #endif /* __ASM_HUGETLB_H */ diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index 8d94a6c0ed5c..c2417a424b98 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -119,7 +119,7 @@ #define TCR_EL2_IRGN0_MASK TCR_IRGN0_MASK #define TCR_EL2_T0SZ_MASK 0x3f #define TCR_EL2_MASK (TCR_EL2_TG0_MASK | TCR_EL2_SH0_MASK | \ - TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK | TCR_EL2_T0SZ_MASK) + TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK) /* VTCR_EL2 Registers bits */ #define VTCR_EL2_DS TCR_EL2_DS diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h index 47f2cf408eed..78ec1ef2cfe8 100644 --- a/arch/arm64/include/asm/kvm_emulate.h +++ b/arch/arm64/include/asm/kvm_emulate.h @@ -605,48 +605,6 @@ static __always_inline void kvm_incr_pc(struct kvm_vcpu *vcpu) __cpacr_to_cptr_set(clr, set));\ } while (0) -static __always_inline void kvm_write_cptr_el2(u64 val) -{ - if (has_vhe() || has_hvhe()) - write_sysreg(val, cpacr_el1); - else - write_sysreg(val, cptr_el2); -} - -/* Resets the value of cptr_el2 when returning to the host. */ -static __always_inline void __kvm_reset_cptr_el2(struct kvm *kvm) -{ - u64 val; - - if (has_vhe()) { - val = (CPACR_EL1_FPEN | CPACR_EL1_ZEN_EL1EN); - if (cpus_have_final_cap(ARM64_SME)) - val |= CPACR_EL1_SMEN_EL1EN; - } else if (has_hvhe()) { - val = CPACR_EL1_FPEN; - - if (!kvm_has_sve(kvm) || !guest_owns_fp_regs()) - val |= CPACR_EL1_ZEN; - if (cpus_have_final_cap(ARM64_SME)) - val |= CPACR_EL1_SMEN; - } else { - val = CPTR_NVHE_EL2_RES1; - - if (kvm_has_sve(kvm) && guest_owns_fp_regs()) - val |= CPTR_EL2_TZ; - if (!cpus_have_final_cap(ARM64_SME)) - val |= CPTR_EL2_TSM; - } - - kvm_write_cptr_el2(val); -} - -#ifdef __KVM_NVHE_HYPERVISOR__ -#define kvm_reset_cptr_el2(v) __kvm_reset_cptr_el2(kern_hyp_va((v)->kvm)) -#else -#define kvm_reset_cptr_el2(v) __kvm_reset_cptr_el2((v)->kvm) -#endif - /* * Returns a 'sanitised' view of CPTR_EL2, translating from nVHE to the VHE * format if E2H isn't set. diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 7cfa024de4e3..d919557af5e5 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -100,7 +100,7 @@ static inline void push_hyp_memcache(struct kvm_hyp_memcache *mc, static inline void *pop_hyp_memcache(struct kvm_hyp_memcache *mc, void *(*to_va)(phys_addr_t phys)) { - phys_addr_t *p = to_va(mc->head); + phys_addr_t *p = to_va(mc->head & PAGE_MASK); if (!mc->nr_pages) return NULL; @@ -615,8 +615,6 @@ struct cpu_sve_state { struct kvm_host_data { #define KVM_HOST_DATA_FLAG_HAS_SPE 0 #define KVM_HOST_DATA_FLAG_HAS_TRBE 1 -#define KVM_HOST_DATA_FLAG_HOST_SVE_ENABLED 2 -#define KVM_HOST_DATA_FLAG_HOST_SME_ENABLED 3 #define KVM_HOST_DATA_FLAG_TRBE_ENABLED 4 #define KVM_HOST_DATA_FLAG_EL1_TRACING_CONFIGURED 5 unsigned long flags; @@ -624,23 +622,13 @@ struct kvm_host_data { struct kvm_cpu_context host_ctxt; /* - * All pointers in this union are hyp VA. + * Hyp VA. * sve_state is only used in pKVM and if system_supports_sve(). */ - union { - struct user_fpsimd_state *fpsimd_state; - struct cpu_sve_state *sve_state; - }; - - union { - /* HYP VA pointer to the host storage for FPMR */ - u64 *fpmr_ptr; - /* - * Used by pKVM only, as it needs to provide storage - * for the host - */ - u64 fpmr; - }; + struct cpu_sve_state *sve_state; + + /* Used by pKVM only. */ + u64 fpmr; /* Ownership of the FP regs */ enum { @@ -1271,7 +1259,7 @@ int kvm_arm_pvtime_has_attr(struct kvm_vcpu *vcpu, extern unsigned int __ro_after_init kvm_arm_vmid_bits; int __init kvm_arm_vmid_alloc_init(void); void __init kvm_arm_vmid_alloc_free(void); -bool kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid); +void kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid); void kvm_arm_vmid_clear_active(void); static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch) |