diff options
Diffstat (limited to 'arch/arm64')
23 files changed, 110 insertions, 176 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index e9fbb0b45793..9ec09f9324d7 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -810,6 +810,16 @@ config QCOM_FALKOR_ERRATUM_E1041 If unsure, say Y. +config NVIDIA_CARMEL_CNP_ERRATUM + bool "NVIDIA Carmel CNP: CNP on Carmel semantically different than ARM cores" + default y + help + If CNP is enabled on Carmel cores, non-sharable TLBIs on a core will not + invalidate shared TLB entries installed by a different core, as it would + on standard ARM cores. + + If unsure, say Y. + config SOCIONEXT_SYNQUACER_PREITS bool "Socionext Synquacer: Workaround for GICv3 pre-ITS" default y diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi index 7de6b376d792..9058cfa4980f 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi @@ -198,6 +198,7 @@ ranges = <0x0 0x00 0x1700000 0x100000>; reg = <0x00 0x1700000 0x0 0x100000>; interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>; + dma-coherent; sec_jr0: jr@10000 { compatible = "fsl,sec-v5.4-job-ring", diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi index 5a8a1dc4262d..28c51e521cb2 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi @@ -348,6 +348,7 @@ ranges = <0x0 0x00 0x1700000 0x100000>; reg = <0x00 0x1700000 0x0 0x100000>; interrupts = <0 75 0x4>; + dma-coherent; sec_jr0: jr@10000 { compatible = "fsl,sec-v5.4-job-ring", diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi index 1d6dfd189c7f..39458305e333 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi @@ -354,6 +354,7 @@ ranges = <0x0 0x00 0x1700000 0x100000>; reg = <0x00 0x1700000 0x0 0x100000>; interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>; + dma-coherent; sec_jr0: jr@10000 { compatible = "fsl,sec-v5.4-job-ring", diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts index 0e1a6d953389..122c95ddad30 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts @@ -35,7 +35,7 @@ &i2c2 { clock-frequency = <400000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; pinctrl-1 = <&pinctrl_i2c2_gpio>; sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi index 44a8c2337cee..f3965ec5b31d 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi @@ -67,7 +67,7 @@ &i2c1 { clock-frequency = <400000>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; pinctrl-1 = <&pinctrl_i2c1_gpio>; sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; diff --git a/arch/arm64/include/asm/checksum.h b/arch/arm64/include/asm/checksum.h index 93a161b3bf3f..dc52b733675d 100644 --- a/arch/arm64/include/asm/checksum.h +++ b/arch/arm64/include/asm/checksum.h @@ -37,7 +37,7 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) } while (--n > 0); sum += ((sum >> 32) | (sum << 32)); - return csum_fold((__force u32)(sum >> 32)); + return csum_fold((__force __wsum)(sum >> 32)); } #define ip_fast_csum ip_fast_csum diff --git a/arch/arm64/include/asm/cpucaps.h b/arch/arm64/include/asm/cpucaps.h index b77d997b173b..c40f2490cd7b 100644 --- a/arch/arm64/include/asm/cpucaps.h +++ b/arch/arm64/include/asm/cpucaps.h @@ -66,7 +66,8 @@ #define ARM64_WORKAROUND_1508412 58 #define ARM64_HAS_LDAPR 59 #define ARM64_KVM_PROTECTED_MODE 60 +#define ARM64_WORKAROUND_NVIDIA_CARMEL_CNP 61 -#define ARM64_NCAPS 61 +#define ARM64_NCAPS 62 #endif /* __ASM_CPUCAPS_H */ diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 0b926f027895..7cd7d5c8c4bc 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -407,6 +407,10 @@ struct kvm_vcpu_arch { #define KVM_ARM64_DEBUG_STATE_SAVE_SPE (1 << 12) /* Save SPE context if active */ #define KVM_ARM64_DEBUG_STATE_SAVE_TRBE (1 << 13) /* Save TRBE context if active */ +#define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \ + KVM_GUESTDBG_USE_SW_BP | \ + KVM_GUESTDBG_USE_HW | \ + KVM_GUESTDBG_SINGLESTEP) /* * When KVM_ARM64_PENDING_EXCEPTION is set, KVM_ARM64_EXCEPT_MASK can * take the following values: @@ -588,11 +592,6 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu, struct kvm_vcpu_events *events); #define KVM_ARCH_WANT_MMU_NOTIFIER -int kvm_unmap_hva_range(struct kvm *kvm, - unsigned long start, unsigned long end, unsigned flags); -int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); -int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); -int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); void kvm_arm_halt_guest(struct kvm *kvm); void kvm_arm_resume_guest(struct kvm *kvm); diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index ca2cd75d3286..efc10e9041a0 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -251,6 +251,8 @@ unsigned long get_wchan(struct task_struct *p); extern struct task_struct *cpu_switch_to(struct task_struct *prev, struct task_struct *next); +asmlinkage void arm64_preempt_schedule_irq(void); + #define task_pt_regs(p) \ ((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1) diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h index 9f4e3b266f21..6623c99f0984 100644 --- a/arch/arm64/include/asm/thread_info.h +++ b/arch/arm64/include/asm/thread_info.h @@ -55,6 +55,8 @@ void arch_setup_new_exec(void); #define arch_setup_new_exec arch_setup_new_exec void arch_release_task_struct(struct task_struct *tsk); +int arch_dup_task_struct(struct task_struct *dst, + struct task_struct *src); #endif diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 506a1cd37973..e2c20c036442 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -526,6 +526,14 @@ const struct arm64_cpu_capabilities arm64_errata[] = { 1, 0), }, #endif +#ifdef CONFIG_NVIDIA_CARMEL_CNP_ERRATUM + { + /* NVIDIA Carmel */ + .desc = "NVIDIA Carmel CNP erratum", + .capability = ARM64_WORKAROUND_NVIDIA_CARMEL_CNP, + ERRATA_MIDR_ALL_VERSIONS(MIDR_NVIDIA_CARMEL), + }, +#endif { } }; diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 3423ae3ecf05..e3e0dcbf6b2f 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1326,7 +1326,10 @@ has_useable_cnp(const struct arm64_cpu_capabilities *entry, int scope) * may share TLB entries with a CPU stuck in the crashed * kernel. */ - if (is_kdump_kernel()) + if (is_kdump_kernel()) + return false; + + if (cpus_have_const_cap(ARM64_WORKAROUND_NVIDIA_CARMEL_CNP)) return false; return has_cpuid_feature(entry, scope); diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index 77605aec25fe..51fcf99d5351 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -353,7 +353,7 @@ static void __cpuinfo_store_cpu(struct cpuinfo_arm64 *info) * with the CLIDR_EL1 fields to avoid triggering false warnings * when there is a mismatch across the CPUs. Keep track of the * effective value of the CTR_EL0 in our internal records for - * acurate sanity check and feature enablement. + * accurate sanity check and feature enablement. */ info->reg_ctr = read_cpuid_effective_cachetype(); info->reg_dczid = read_cpuid(DCZID_EL0); diff --git a/arch/arm64/kernel/crash_dump.c b/arch/arm64/kernel/crash_dump.c index e6e284265f19..58303a9ec32c 100644 --- a/arch/arm64/kernel/crash_dump.c +++ b/arch/arm64/kernel/crash_dump.c @@ -64,5 +64,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos) { memcpy(buf, phys_to_virt((phys_addr_t)*ppos), count); + *ppos += count; + return count; } diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index 325c83b1a24d..6e60aa3b5ea9 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -57,6 +57,8 @@ #include <asm/processor.h> #include <asm/pointer_auth.h> #include <asm/stacktrace.h> +#include <asm/switch_to.h> +#include <asm/system_misc.h> #if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_STACKPROTECTOR_PER_TASK) #include <linux/stackprotector.h> diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index ad20981dfda4..d55bdfb7789c 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -194,8 +194,9 @@ void show_stack(struct task_struct *tsk, unsigned long *sp, const char *loglvl) #ifdef CONFIG_STACKTRACE -void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, - struct task_struct *task, struct pt_regs *regs) +noinline void arch_stack_walk(stack_trace_consume_fn consume_entry, + void *cookie, struct task_struct *task, + struct pt_regs *regs) { struct stackframe frame; @@ -203,8 +204,8 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, start_backtrace(&frame, regs->regs[29], regs->pc); else if (task == current) start_backtrace(&frame, - (unsigned long)__builtin_frame_address(0), - (unsigned long)arch_stack_walk); + (unsigned long)__builtin_frame_address(1), + (unsigned long)__builtin_return_address(0)); else start_backtrace(&frame, thread_saved_fp(task), thread_saved_pc(task)); diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 4808aca8c87c..1cb39c0803a4 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -209,6 +209,8 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_PTP_KVM: r = 1; break; + case KVM_CAP_SET_GUEST_DEBUG2: + return KVM_GUESTDBG_VALID_MASK; case KVM_CAP_ARM_SET_DEVICE_ADDR: r = 1; break; @@ -1273,7 +1275,7 @@ void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot) } void kvm_arch_flush_remote_tlbs_memslot(struct kvm *kvm, - struct kvm_memory_slot *memslot) + const struct kvm_memory_slot *memslot) { kvm_flush_remote_tlbs(kvm); } diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index c763808cacdf..5cb4a1cd5603 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -888,11 +888,6 @@ int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, return -EINVAL; } -#define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \ - KVM_GUESTDBG_USE_SW_BP | \ - KVM_GUESTDBG_USE_HW | \ - KVM_GUESTDBG_SINGLESTEP) - /** * kvm_arch_vcpu_ioctl_set_guest_debug - set up guest debugging * @kvm: pointer to the KVM struct diff --git a/arch/arm64/kvm/hyp/vgic-v3-sr.c b/arch/arm64/kvm/hyp/vgic-v3-sr.c index ee3682b9873c..39f8f7f9227c 100644 --- a/arch/arm64/kvm/hyp/vgic-v3-sr.c +++ b/arch/arm64/kvm/hyp/vgic-v3-sr.c @@ -429,6 +429,13 @@ u64 __vgic_v3_get_gic_config(void) if (has_vhe()) flags = local_daif_save(); + /* + * Table 11-2 "Permitted ICC_SRE_ELx.SRE settings" indicates + * that to be able to set ICC_SRE_EL1.SRE to 0, all the + * interrupt overrides must be set. You've got to love this. + */ + sysreg_clear_set(hcr_el2, 0, HCR_AMO | HCR_FMO | HCR_IMO); + isb(); write_gicreg(0, ICC_SRE_EL1); isb(); @@ -436,6 +443,8 @@ u64 __vgic_v3_get_gic_config(void) write_gicreg(sre, ICC_SRE_EL1); isb(); + sysreg_clear_set(hcr_el2, HCR_AMO | HCR_FMO | HCR_IMO, 0); + isb(); if (has_vhe()) local_daif_restore(flags); diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index cd4d51ae3d4a..c5d1f3c87dbd 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -923,7 +923,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, * gfn_to_pfn_prot (which calls get_user_pages), so that we don't risk * the page we just got a reference to gets unmapped before we have a * chance to grab the mmu_lock, which ensure that if the page gets - * unmapped afterwards, the call to kvm_unmap_hva will take it away + * unmapped afterwards, the call to kvm_unmap_gfn will take it away * from us again properly. This smp_rmb() interacts with the smp_wmb() * in kvm_mmu_notifier_invalidate_<page|range_end>. * @@ -1153,126 +1153,70 @@ out_unlock: return ret; } -static int handle_hva_to_gpa(struct kvm *kvm, - unsigned long start, - unsigned long end, - int (*handler)(struct kvm *kvm, - gpa_t gpa, u64 size, - void *data), - void *data) -{ - struct kvm_memslots *slots; - struct kvm_memory_slot *memslot; - int ret = 0; - - slots = kvm_memslots(kvm); - - /* we only care about the pages that the guest sees */ - kvm_for_each_memslot(memslot, slots) { - unsigned long hva_start, hva_end; - gfn_t gpa; - - hva_start = max(start, memslot->userspace_addr); - hva_end = min(end, memslot->userspace_addr + - (memslot->npages << PAGE_SHIFT)); - if (hva_start >= hva_end) - continue; - - gpa = hva_to_gfn_memslot(hva_start, memslot) << PAGE_SHIFT; - ret |= handler(kvm, gpa, (u64)(hva_end - hva_start), data); - } - - return ret; -} - -static int kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, u64 size, void *data) -{ - unsigned flags = *(unsigned *)data; - bool may_block = flags & MMU_NOTIFIER_RANGE_BLOCKABLE; - - __unmap_stage2_range(&kvm->arch.mmu, gpa, size, may_block); - return 0; -} - -int kvm_unmap_hva_range(struct kvm *kvm, - unsigned long start, unsigned long end, unsigned flags) +bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) { if (!kvm->arch.mmu.pgt) return 0; - trace_kvm_unmap_hva_range(start, end); - handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, &flags); - return 0; -} - -static int kvm_set_spte_handler(struct kvm *kvm, gpa_t gpa, u64 size, void *data) -{ - kvm_pfn_t *pfn = (kvm_pfn_t *)data; - - WARN_ON(size != PAGE_SIZE); + __unmap_stage2_range(&kvm->arch.mmu, range->start << PAGE_SHIFT, + (range->end - range->start) << PAGE_SHIFT, + range->may_block); - /* - * The MMU notifiers will have unmapped a huge PMD before calling - * ->change_pte() (which in turn calls kvm_set_spte_hva()) and - * therefore we never need to clear out a huge PMD through this - * calling path and a memcache is not required. - */ - kvm_pgtable_stage2_map(kvm->arch.mmu.pgt, gpa, PAGE_SIZE, - __pfn_to_phys(*pfn), KVM_PGTABLE_PROT_R, NULL); return 0; } -int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) +bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) { - unsigned long end = hva + PAGE_SIZE; - kvm_pfn_t pfn = pte_pfn(pte); + kvm_pfn_t pfn = pte_pfn(range->pte); if (!kvm->arch.mmu.pgt) return 0; - trace_kvm_set_spte_hva(hva); + WARN_ON(range->end - range->start != 1); /* * We've moved a page around, probably through CoW, so let's treat it * just like a translation fault and clean the cache to the PoC. */ clean_dcache_guest_page(pfn, PAGE_SIZE); - handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, &pfn); + + /* + * The MMU notifiers will have unmapped a huge PMD before calling + * ->change_pte() (which in turn calls kvm_set_spte_gfn()) and + * therefore we never need to clear out a huge PMD through this + * calling path and a memcache is not required. + */ + kvm_pgtable_stage2_map(kvm->arch.mmu.pgt, range->start << PAGE_SHIFT, + PAGE_SIZE, __pfn_to_phys(pfn), + KVM_PGTABLE_PROT_R, NULL); + return 0; } -static int kvm_age_hva_handler(struct kvm *kvm, gpa_t gpa, u64 size, void *data) +bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) { - pte_t pte; + u64 size = (range->end - range->start) << PAGE_SHIFT; kvm_pte_t kpte; + pte_t pte; + + if (!kvm->arch.mmu.pgt) + return 0; WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PUD_SIZE); - kpte = kvm_pgtable_stage2_mkold(kvm->arch.mmu.pgt, gpa); + + kpte = kvm_pgtable_stage2_mkold(kvm->arch.mmu.pgt, + range->start << PAGE_SHIFT); pte = __pte(kpte); return pte_valid(pte) && pte_young(pte); } -static int kvm_test_age_hva_handler(struct kvm *kvm, gpa_t gpa, u64 size, void *data) -{ - WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PUD_SIZE); - return kvm_pgtable_stage2_is_young(kvm->arch.mmu.pgt, gpa); -} - -int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end) +bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) { if (!kvm->arch.mmu.pgt) return 0; - trace_kvm_age_hva(start, end); - return handle_hva_to_gpa(kvm, start, end, kvm_age_hva_handler, NULL); -} -int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) -{ - if (!kvm->arch.mmu.pgt) - return 0; - trace_kvm_test_age_hva(hva); - return handle_hva_to_gpa(kvm, hva, hva + PAGE_SIZE, - kvm_test_age_hva_handler, NULL); + return kvm_pgtable_stage2_is_young(kvm->arch.mmu.pgt, + range->start << PAGE_SHIFT); } phys_addr_t kvm_mmu_get_httbr(void) diff --git a/arch/arm64/kvm/trace_arm.h b/arch/arm64/kvm/trace_arm.h index ff0444352bba..33e4e7dd2719 100644 --- a/arch/arm64/kvm/trace_arm.h +++ b/arch/arm64/kvm/trace_arm.h @@ -135,72 +135,6 @@ TRACE_EVENT(kvm_mmio_emulate, __entry->vcpu_pc, __entry->instr, __entry->cpsr) ); -TRACE_EVENT(kvm_unmap_hva_range, - TP_PROTO(unsigned long start, unsigned long end), - TP_ARGS(start, end), - - TP_STRUCT__entry( - __field( unsigned long, start ) - __field( unsigned long, end ) - ), - - TP_fast_assign( - __entry->start = start; - __entry->end = end; - ), - - TP_printk("mmu notifier unmap range: %#016lx -- %#016lx", - __entry->start, __entry->end) -); - -TRACE_EVENT(kvm_set_spte_hva, - TP_PROTO(unsigned long hva), - TP_ARGS(hva), - - TP_STRUCT__entry( - __field( unsigned long, hva ) - ), - - TP_fast_assign( - __entry->hva = hva; - ), - - TP_printk("mmu notifier set pte hva: %#016lx", __entry->hva) -); - -TRACE_EVENT(kvm_age_hva, - TP_PROTO(unsigned long start, unsigned long end), - TP_ARGS(start, end), - - TP_STRUCT__entry( - __field( unsigned long, start ) - __field( unsigned long, end ) - ), - - TP_fast_assign( - __entry->start = start; - __entry->end = end; - ), - - TP_printk("mmu notifier age hva: %#016lx -- %#016lx", - __entry->start, __entry->end) -); - -TRACE_EVENT(kvm_test_age_hva, - TP_PROTO(unsigned long hva), - TP_ARGS(hva), - - TP_STRUCT__entry( - __field( unsigned long, hva ) - ), - - TP_fast_assign( - __entry->hva = hva; - ), - - TP_printk("mmu notifier test age hva: %#016lx", __entry->hva) -); - TRACE_EVENT(kvm_set_way_flush, TP_PROTO(unsigned long vcpu_pc, bool cache), TP_ARGS(vcpu_pc, cache), diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 7484ea4f6ba0..5d9550fdb9cf 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1448,6 +1448,22 @@ static void __remove_pgd_mapping(pgd_t *pgdir, unsigned long start, u64 size) struct range arch_get_mappable_range(void) { struct range mhp_range; + u64 start_linear_pa = __pa(_PAGE_OFFSET(vabits_actual)); + u64 end_linear_pa = __pa(PAGE_END - 1); + + if (IS_ENABLED(CONFIG_RANDOMIZE_BASE)) { + /* + * Check for a wrap, it is possible because of randomized linear + * mapping the start physical address is actually bigger than + * the end physical address. In this case set start to zero + * because [0, end_linear_pa] range must still be able to cover + * all addressable physical addresses. + */ + if (start_linear_pa > end_linear_pa) + start_linear_pa = 0; + } + + WARN_ON(start_linear_pa > end_linear_pa); /* * Linear mapping region is the range [PAGE_OFFSET..(PAGE_END - 1)] @@ -1455,8 +1471,9 @@ struct range arch_get_mappable_range(void) * range which can be mapped inside this linear mapping range, must * also be derived from its end points. */ - mhp_range.start = __pa(_PAGE_OFFSET(vabits_actual)); - mhp_range.end = __pa(PAGE_END - 1); + mhp_range.start = start_linear_pa; + mhp_range.end = end_linear_pa; + return mhp_range; } |