What is the use of MMU Notifiers in the absence of Shadow Page Table? Thanks Senthil > -----Original Message----- > From: kvmarm-bounces@xxxxxxxxxxxxxxxxxxxxx [mailto:kvmarm- > bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Christoffer Dall > Sent: Monday, October 22, 2012 12:20 PM > To: kvm@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > kvmarm@xxxxxxxxxxxxxxxxxxxxx > Cc: Marcelo Tosatti > Subject: [kvmarm] [PATCH v3 06/14] KVM: ARM: Memory virtualization setup > > This commit introduces the framework for guest memory management > through the use of 2nd stage translation. Each VM has a pointer to a level-1 > table (the pgd field in struct kvm_arch) which is used for the 2nd stage > translations. Entries are added when handling guest faults (later patch) and > the table itself can be allocated and freed through the following functions > implemented in > arch/arm/kvm/arm_mmu.c: > - kvm_alloc_stage2_pgd(struct kvm *kvm); > - kvm_free_stage2_pgd(struct kvm *kvm); > > Each entry in TLBs and caches are tagged with a VMID identifier in addition to > ASIDs. The VMIDs are assigned consecutively to VMs in the order that VMs > are executed, and caches and tlbs are invalidated when the VMID space has > been used to allow for more than 255 simultaenously running guests. > > The 2nd stage pgd is allocated in kvm_arch_init_vm(). The table is freed in > kvm_arch_destroy_vm(). Both functions are called from the main KVM code. > > We pre-allocate page table memory to be able to synchronize using a > spinlock and be called under rcu_read_lock from the MMU notifiers. We > steal the mmu_memory_cache implementation from x86 and adapt for our > specific usage. > > We support MMU notifiers (thanks to Marc Zyngier) through > kvm_unmap_hva and kvm_set_spte_hva. > > Finally, define kvm_phys_addr_ioremap() to map a device at a guest IPA, > which is used by VGIC support to map the virtual CPU interface registers to > the guest. This support is added by Marc Zyngier. > > Reviewed-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx> > Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> > Signed-off-by: Christoffer Dall <c.dall@xxxxxxxxxxxxxxxxxxxxxx> > --- > arch/arm/include/asm/kvm_asm.h | 2 > arch/arm/include/asm/kvm_host.h | 19 ++ > arch/arm/include/asm/kvm_mmu.h | 9 + > arch/arm/kvm/Kconfig | 1 > arch/arm/kvm/arm.c | 37 ++++ > arch/arm/kvm/interrupts.S | 10 + > arch/arm/kvm/mmu.c | 393 > +++++++++++++++++++++++++++++++++++++++ > arch/arm/kvm/trace.h | 46 +++++ > 8 files changed, 515 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/include/asm/kvm_asm.h > b/arch/arm/include/asm/kvm_asm.h index 954bf7c..47a0e57 100644 > --- a/arch/arm/include/asm/kvm_asm.h > +++ b/arch/arm/include/asm/kvm_asm.h > @@ -57,6 +57,7 @@ > #define ARM_EXCEPTION_HVC 7 > > #ifndef __ASSEMBLY__ > +struct kvm; > struct kvm_vcpu; > > extern char __kvm_hyp_init[]; > @@ -71,6 +72,7 @@ extern char __kvm_hyp_code_start[]; extern char > __kvm_hyp_code_end[]; > > extern void __kvm_flush_vm_context(void); > +extern void __kvm_tlb_flush_vmid(struct kvm *kvm); > > extern int __kvm_vcpu_run(struct kvm_vcpu *vcpu); #endif diff --git > a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h > index 15d4c0b..68d1005 100644 > --- a/arch/arm/include/asm/kvm_host.h > +++ b/arch/arm/include/asm/kvm_host.h > @@ -117,4 +117,23 @@ int kvm_arm_copy_reg_indices(struct kvm_vcpu > *vcpu, u64 __user *indices); struct kvm_one_reg; int > kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); > int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg > *reg); > +u64 kvm_call_hyp(void *hypfn, ...); > + > +#define KVM_ARCH_WANT_MMU_NOTIFIER > +struct kvm; > +int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); int > +kvm_unmap_hva_range(struct kvm *kvm, > + unsigned long start, unsigned long end); void > +kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); > + > +/* We do not have shadow page tables, hence the empty hooks */ static > +inline int kvm_age_hva(struct kvm *kvm, unsigned long hva) { > + return 0; > +} > + > +static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) > +{ > + return 0; > +} > #endif /* __ARM_KVM_HOST_H__ */ > diff --git a/arch/arm/include/asm/kvm_mmu.h > b/arch/arm/include/asm/kvm_mmu.h index 741ab8f..9bd0508 100644 > --- a/arch/arm/include/asm/kvm_mmu.h > +++ b/arch/arm/include/asm/kvm_mmu.h > @@ -33,6 +33,15 @@ int create_hyp_mappings(void *from, void *to); int > create_hyp_io_mappings(void *from, void *to, phys_addr_t); void > free_hyp_pmds(void); > > +int kvm_alloc_stage2_pgd(struct kvm *kvm); void > +kvm_free_stage2_pgd(struct kvm *kvm); int > kvm_phys_addr_ioremap(struct > +kvm *kvm, phys_addr_t guest_ipa, > + phys_addr_t pa, unsigned long size); > + > +int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run > *run); > + > +void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu); > + > unsigned long kvm_mmu_get_httbr(void); > int kvm_mmu_init(void); > void kvm_mmu_exit(void); > diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig index > a07ddcc..47c5500 100644 > --- a/arch/arm/kvm/Kconfig > +++ b/arch/arm/kvm/Kconfig > @@ -36,6 +36,7 @@ config KVM_ARM_HOST > depends on KVM > depends on MMU > depends on CPU_V7 && ARM_VIRT_EXT > + select MMU_NOTIFIER > ---help--- > Provides host support for ARM processors. > > diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index > 8e1ea2b..5ac3132 100644 > --- a/arch/arm/kvm/arm.c > +++ b/arch/arm/kvm/arm.c > @@ -81,12 +81,33 @@ void kvm_arch_sync_events(struct kvm *kvm) { } > > +/** > + * kvm_arch_init_vm - initializes a VM data structure > + * @kvm: pointer to the KVM struct > + */ > int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { > + int ret = 0; > + > if (type) > return -EINVAL; > > - return 0; > + ret = kvm_alloc_stage2_pgd(kvm); > + if (ret) > + goto out_fail_alloc; > + > + ret = create_hyp_mappings(kvm, kvm + 1); > + if (ret) > + goto out_free_stage2_pgd; > + > + /* Mark the initial VMID generation invalid */ > + kvm->arch.vmid_gen = 0; > + > + return ret; > +out_free_stage2_pgd: > + kvm_free_stage2_pgd(kvm); > +out_fail_alloc: > + return ret; > } > > int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) @@ > -104,10 +125,16 @@ int kvm_arch_create_memslot(struct > kvm_memory_slot *slot, unsigned long npages) > return 0; > } > > +/** > + * kvm_arch_destroy_vm - destroy the VM data structure > + * @kvm: pointer to the KVM struct > + */ > void kvm_arch_destroy_vm(struct kvm *kvm) { > int i; > > + kvm_free_stage2_pgd(kvm); > + > for (i = 0; i < KVM_MAX_VCPUS; ++i) { > if (kvm->vcpus[i]) { > kvm_arch_vcpu_free(kvm->vcpus[i]); > @@ -189,7 +216,13 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct > kvm *kvm, unsigned int id) > if (err) > goto free_vcpu; > > + err = create_hyp_mappings(vcpu, vcpu + 1); > + if (err) > + goto vcpu_uninit; > + > return vcpu; > +vcpu_uninit: > + kvm_vcpu_uninit(vcpu); > free_vcpu: > kmem_cache_free(kvm_vcpu_cache, vcpu); > out: > @@ -198,6 +231,8 @@ out: > > void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) { > + kvm_mmu_free_memory_caches(vcpu); > + kmem_cache_free(kvm_vcpu_cache, vcpu); > } > > void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) diff --git > a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index > 98a67ca..1c83022 100644 > --- a/arch/arm/kvm/interrupts.S > +++ b/arch/arm/kvm/interrupts.S > @@ -33,7 +33,13 @@ __kvm_hyp_code_start: > > /********************************************************** > ********** > * Flush per-VMID TLBs > */ > +ENTRY(__kvm_tlb_flush_vmid) > + bx lr > +ENDPROC(__kvm_tlb_flush_vmid) > > +/********************************************************* > *********** > + * Flush TLBs and instruction caches of current CPU for all VMIDs */ > ENTRY(__kvm_flush_vm_context) > bx lr > ENDPROC(__kvm_flush_vm_context) > @@ -41,10 +47,12 @@ ENDPROC(__kvm_flush_vm_context) > > /********************************************************** > ********** > * Hypervisor world-switch code > */ > - > ENTRY(__kvm_vcpu_run) > bx lr > > +ENTRY(kvm_call_hyp) > + bx lr > + > > > /********************************************************** > ********** > * Hypervisor exception vector and handlers diff --git > a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 17c2bf5..f45be86 > 100644 > --- a/arch/arm/kvm/mmu.c > +++ b/arch/arm/kvm/mmu.c > @@ -23,11 +23,52 @@ > #include <asm/pgalloc.h> > #include <asm/kvm_arm.h> > #include <asm/kvm_mmu.h> > +#include <asm/kvm_asm.h> > #include <asm/mach/map.h> > +#include <trace/events/kvm.h> > + > +#include "trace.h" > > static DEFINE_MUTEX(kvm_hyp_pgd_mutex); static pgd_t *hyp_pgd; > > +static void kvm_tlb_flush_vmid(struct kvm *kvm) { > + kvm_call_hyp(__kvm_tlb_flush_vmid, kvm); } > + > +static int mmu_topup_memory_cache(struct kvm_mmu_memory_cache > *cache, > + int min, int max) > +{ > + void *page; > + > + BUG_ON(max > KVM_NR_MEM_OBJS); > + if (cache->nobjs >= min) > + return 0; > + while (cache->nobjs < max) { > + page = (void *)__get_free_page(PGALLOC_GFP); > + if (!page) > + return -ENOMEM; > + cache->objects[cache->nobjs++] = page; > + } > + return 0; > +} > + > +static void mmu_free_memory_cache(struct kvm_mmu_memory_cache > *mc) { > + while (mc->nobjs) > + free_page((unsigned long)mc->objects[--mc->nobjs]); } > + > +static void *mmu_memory_cache_alloc(struct kvm_mmu_memory_cache > *mc) { > + void *p; > + > + BUG_ON(!mc || !mc->nobjs); > + p = mc->objects[--mc->nobjs]; > + return p; > +} > + > static void free_ptes(pmd_t *pmd, unsigned long addr) { > pte_t *pte; > @@ -201,11 +242,363 @@ int create_hyp_io_mappings(void *from, void *to, > phys_addr_t addr) > return __create_hyp_mappings(from, to, &pfn); } > > +/** > + * kvm_alloc_stage2_pgd - allocate level-1 table for stage-2 translation. > + * @kvm: The KVM struct pointer for the VM. > + * > + * Allocates the 1st level table only of size defined by PGD2_ORDER > +(can > + * support either full 40-bit input addresses or limited to 32-bit > +input > + * addresses). Clears the allocated pages. > + * > + * Note we don't need locking here as this is only called when the VM > +is > + * created, which can only be done once. > + */ > +int kvm_alloc_stage2_pgd(struct kvm *kvm) { > + pgd_t *pgd; > + > + if (kvm->arch.pgd != NULL) { > + kvm_err("kvm_arch already initialized?\n"); > + return -EINVAL; > + } > + > + pgd = (pgd_t *)__get_free_pages(GFP_KERNEL, PGD2_ORDER); > + if (!pgd) > + return -ENOMEM; > + > + memset(pgd, 0, PTRS_PER_PGD2 * sizeof(pgd_t)); > + clean_dcache_area(pgd, PTRS_PER_PGD2 * sizeof(pgd_t)); > + kvm->arch.pgd = pgd; > + > + return 0; > +} > + > +static void free_guest_pages(pte_t *pte, unsigned long addr) { > + unsigned int i; > + struct page *pte_page; > + > + pte_page = virt_to_page(pte); > + > + for (i = 0; i < PTRS_PER_PTE; i++) { > + if (pte_present(*pte)) > + put_page(pte_page); > + pte++; > + } > + > + WARN_ON(page_count(pte_page) != 1); > +} > + > +static void free_stage2_ptes(pmd_t *pmd, unsigned long addr) { > + unsigned int i; > + pte_t *pte; > + struct page *pmd_page; > + > + pmd_page = virt_to_page(pmd); > + > + for (i = 0; i < PTRS_PER_PMD; i++, addr += PMD_SIZE) { > + BUG_ON(pmd_sect(*pmd)); > + if (!pmd_none(*pmd) && pmd_table(*pmd)) { > + pte = pte_offset_kernel(pmd, addr); > + free_guest_pages(pte, addr); > + pte_free_kernel(NULL, pte); > + > + put_page(pmd_page); > + } > + pmd++; > + } > + > + WARN_ON(page_count(pmd_page) != 1); > +} > + > +/** > + * kvm_free_stage2_pgd - free all stage-2 tables > + * @kvm: The KVM struct pointer for the VM. > + * > + * Walks the level-1 page table pointed to by kvm->arch.pgd and frees > +all > + * underlying level-2 and level-3 tables before freeing the actual > +level-1 table > + * and setting the struct pointer to NULL. > + * > + * Note we don't need locking here as this is only called when the VM > +is > + * destroyed, which can only be done once. > + */ > +void kvm_free_stage2_pgd(struct kvm *kvm) { > + pgd_t *pgd; > + pud_t *pud; > + pmd_t *pmd; > + unsigned long long i, addr; > + struct page *pud_page; > + > + if (kvm->arch.pgd == NULL) > + return; > + > + /* > + * We do this slightly different than other places, since we need more > + * than 32 bits and for instance pgd_addr_end converts to unsigned > long. > + */ > + addr = 0; > + for (i = 0; i < PTRS_PER_PGD2; i++) { > + addr = i * (unsigned long long)PGDIR_SIZE; > + pgd = kvm->arch.pgd + i; > + pud = pud_offset(pgd, addr); > + pud_page = virt_to_page(pud); > + > + if (pud_none(*pud)) > + continue; > + > + BUG_ON(pud_bad(*pud)); > + > + pmd = pmd_offset(pud, addr); > + free_stage2_ptes(pmd, addr); > + pmd_free(NULL, pmd); > + put_page(pud_page); > + } > + > + WARN_ON(page_count(pud_page) != 1); > + free_pages((unsigned long)kvm->arch.pgd, PGD2_ORDER); > + kvm->arch.pgd = NULL; > +} > + > +/** > + * stage2_clear_pte -- Clear a stage-2 PTE. > + * @kvm: The VM pointer > + * @addr: The physical address of the PTE > + * > + * Clear a stage-2 PTE, lowering the various ref-counts. Also takes > + * care of invalidating the TLBs. Must be called while holding > + * mmu_lock, otherwise another faulting VCPU may come in and mess > + * things behind our back. > + */ > +static void stage2_clear_pte(struct kvm *kvm, phys_addr_t addr) { > + pgd_t *pgd; > + pud_t *pud; > + pmd_t *pmd; > + pte_t *pte; > + struct page *page; > + > + pgd = kvm->arch.pgd + pgd_index(addr); > + pud = pud_offset(pgd, addr); > + if (pud_none(*pud)) > + return; > + > + pmd = pmd_offset(pud, addr); > + if (pmd_none(*pmd)) > + return; > + > + pte = pte_offset_kernel(pmd, addr); > + set_pte_ext(pte, __pte(0), 0); > + > + page = virt_to_page(pte); > + put_page(page); > + if (page_count(page) != 1) { > + kvm_tlb_flush_vmid(kvm); > + return; > + } > + > + /* Need to remove pte page */ > + pmd_clear(pmd); > + pte_free_kernel(NULL, (pte_t *)((unsigned long)pte & > PAGE_MASK)); > + > + page = virt_to_page(pmd); > + put_page(page); > + if (page_count(page) != 1) { > + kvm_tlb_flush_vmid(kvm); > + return; > + } > + > + pud_clear(pud); > + pmd_free(NULL, (pmd_t *)((unsigned long)pmd & PAGE_MASK)); > + > + page = virt_to_page(pud); > + put_page(page); > + kvm_tlb_flush_vmid(kvm); > +} > + > +static int stage2_set_pte(struct kvm *kvm, struct > kvm_mmu_memory_cache *cache, > + phys_addr_t addr, const pte_t *new_pte, bool > iomap) { > + pgd_t *pgd; > + pud_t *pud; > + pmd_t *pmd; > + pte_t *pte, old_pte; > + > + /* Create 2nd stage page table mapping - Level 1 */ > + pgd = kvm->arch.pgd + pgd_index(addr); > + pud = pud_offset(pgd, addr); > + if (pud_none(*pud)) { > + if (!cache) > + return 0; /* ignore calls from kvm_set_spte_hva */ > + pmd = mmu_memory_cache_alloc(cache); > + pud_populate(NULL, pud, pmd); > + pmd += pmd_index(addr); > + get_page(virt_to_page(pud)); > + } else > + pmd = pmd_offset(pud, addr); > + > + /* Create 2nd stage page table mapping - Level 2 */ > + if (pmd_none(*pmd)) { > + if (!cache) > + return 0; /* ignore calls from kvm_set_spte_hva */ > + pte = mmu_memory_cache_alloc(cache); > + clean_pte_table(pte); > + pmd_populate_kernel(NULL, pmd, pte); > + pte += pte_index(addr); > + get_page(virt_to_page(pmd)); > + } else > + pte = pte_offset_kernel(pmd, addr); > + > + if (iomap && pte_present(*pte)) > + return -EFAULT; > + > + /* Create 2nd stage page table mapping - Level 3 */ > + old_pte = *pte; > + set_pte_ext(pte, *new_pte, 0); > + if (pte_present(old_pte)) > + kvm_tlb_flush_vmid(kvm); > + else > + get_page(virt_to_page(pte)); > + > + return 0; > +} > + > +/** > + * kvm_phys_addr_ioremap - map a device range to guest IPA > + * > + * @kvm: The KVM pointer > + * @guest_ipa: The IPA at which to insert the mapping > + * @pa: The physical address of the device > + * @size: The size of the mapping > + */ > +int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa, > + phys_addr_t pa, unsigned long size) { > + phys_addr_t addr, end; > + int ret = 0; > + unsigned long pfn; > + struct kvm_mmu_memory_cache cache = { 0, }; > + > + end = (guest_ipa + size + PAGE_SIZE - 1) & PAGE_MASK; > + pfn = __phys_to_pfn(pa); > + > + for (addr = guest_ipa; addr < end; addr += PAGE_SIZE) { > + pte_t pte = pfn_pte(pfn, PAGE_S2_DEVICE | > L_PTE_S2_RDWR); > + > + ret = mmu_topup_memory_cache(&cache, 2, 2); > + if (ret) > + goto out; > + spin_lock(&kvm->mmu_lock); > + ret = stage2_set_pte(kvm, &cache, addr, &pte, true); > + spin_unlock(&kvm->mmu_lock); > + if (ret) > + goto out; > + > + pfn++; > + } > + > +out: > + mmu_free_memory_cache(&cache); > + return ret; > +} > + > int kvm_handle_guest_abort(struct kvm_vcpu *vcpu, struct kvm_run *run) > { > return -EINVAL; > } > > +static void handle_hva_to_gpa(struct kvm *kvm, > + unsigned long start, > + unsigned long end, > + void (*handler)(struct kvm *kvm, > + gpa_t gpa, void *data), > + void *data) > +{ > + struct kvm_memslots *slots; > + struct kvm_memory_slot *memslot; > + > + 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 gfn, gfn_end; > + > + hva_start = max(start, memslot->userspace_addr); > + hva_end = min(end, memslot->userspace_addr + > + (memslot->npages << PAGE_SHIFT)); > + if (hva_start >= hva_end) > + continue; > + > + /* > + * {gfn(page) | page intersects with [hva_start, hva_end)} = > + * {gfn_start, gfn_start+1, ..., gfn_end-1}. > + */ > + gfn = hva_to_gfn_memslot(hva_start, memslot); > + gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, > memslot); > + > + for (; gfn < gfn_end; ++gfn) { > + gpa_t gpa = gfn << PAGE_SHIFT; > + handler(kvm, gpa, data); > + } > + } > +} > + > +static void kvm_unmap_hva_handler(struct kvm *kvm, gpa_t gpa, void > +*data) { > + stage2_clear_pte(kvm, gpa); > +} > + > +int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) { > + unsigned long end = hva + PAGE_SIZE; > + > + if (!kvm->arch.pgd) > + return 0; > + > + trace_kvm_unmap_hva(hva); > + handle_hva_to_gpa(kvm, hva, end, &kvm_unmap_hva_handler, > NULL); > + return 0; > +} > + > +int kvm_unmap_hva_range(struct kvm *kvm, > + unsigned long start, unsigned long end) { > + if (!kvm->arch.pgd) > + return 0; > + > + trace_kvm_unmap_hva_range(start, end); > + handle_hva_to_gpa(kvm, start, end, &kvm_unmap_hva_handler, > NULL); > + return 0; > +} > + > +static void kvm_set_spte_handler(struct kvm *kvm, gpa_t gpa, void > +*data) { > + pte_t *pte = (pte_t *)data; > + > + stage2_set_pte(kvm, NULL, gpa, pte, false); } > + > + > +void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) { > + unsigned long end = hva + PAGE_SIZE; > + pte_t stage2_pte; > + > + if (!kvm->arch.pgd) > + return; > + > + trace_kvm_set_spte_hva(hva); > + stage2_pte = pfn_pte(pte_pfn(pte), PAGE_S2); > + handle_hva_to_gpa(kvm, hva, end, &kvm_set_spte_handler, > &stage2_pte); > +} > + > +void kvm_mmu_free_memory_caches(struct kvm_vcpu *vcpu) { > + mmu_free_memory_cache(&vcpu->arch.mmu_page_cache); > +} > + > unsigned long kvm_mmu_get_httbr(void) > { > return virt_to_phys(hyp_pgd); > diff --git a/arch/arm/kvm/trace.h b/arch/arm/kvm/trace.h index > f8869c1..862b2cc 100644 > --- a/arch/arm/kvm/trace.h > +++ b/arch/arm/kvm/trace.h > @@ -39,7 +39,53 @@ TRACE_EVENT(kvm_exit, > TP_printk("PC: 0x%08lx", __entry->vcpu_pc) ); > > +TRACE_EVENT(kvm_unmap_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 unmap hva: %#08lx", __entry->hva) ); > + > +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: %#08lx -- %#08lx", > + __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: %#08lx", __entry->hva) ); > > #endif /* _TRACE_KVM_H */ > > > _______________________________________________ > kvmarm mailing list > kvmarm@xxxxxxxxxxxxxxxxxxxxx > https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
