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/linux/drivers/gpu/drm/msm/
H A Dmsm_gem_vma.c1 // SPDX-License-Identifier: GPL-2.0-only
21 MODULE_PARM_DESC(vm_log_shift, "Length of VM op log");
25 * struct msm_vm_map_op - create new pgtable mapping
30 /** @range: size of the region to map */
32 /** @offset: offset into @sgt to map */
34 /** @sgt: pages to map, or NULL for a PRR mapping */
48 * struct msm_vm_unmap_op - unmap a range of pages from pgtable
68 * struct msm_vma_op - A MAP or UNMAP operation
77 /** @map: Parameters used if op == MSM_VMA_OP_MAP */
78 struct msm_vm_map_op map; member
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/linux/drivers/gpu/drm/xe/
H A Dxe_vm_types.h1 /* SPDX-License-Identifier: MIT */
12 #include <linux/dma-resv.h>
52 * struct xe_vma_mem_attr - memory attributes associated with vma
95 * Locking: vm lock in write mode OR vm lock in read mode and the vm's
99 /** @rebind: link into VM if this VMA needs rebinding. */
101 /** @destroy: link to contested list when VM is being closed. */
114 * protected by BO's resv and for userptrs, vm->svm.gpusvm.notifier_lock in
115 * write mode for writing or vm->svm.gpusvm.notifier_lock in read mode and
116 * the vm->resv. For stable reading, BO's resv or userptr
117 * vm->svm.gpusvm.notifier_lock in read mode is required. Can be
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H A Dxe_vm.c1 // SPDX-License-Identifier: MIT
8 #include <linux/dma-fence-array.h>
45 static struct drm_gem_object *xe_vm_obj(struct xe_vm *vm) in xe_vm_obj() argument
47 return vm->gpuvm.r_obj; in xe_vm_obj()
51 * xe_vm_drm_exec_lock() - Lock the vm's resv with a drm_exec transaction
52 * @vm: The vm whose resv is to be locked.
55 * Helper to lock the vm's resv as part of a drm_exec transaction.
59 int xe_vm_drm_exec_lock(struct xe_vm *vm, struct drm_exec *exec) in xe_vm_drm_exec_lock() argument
61 return drm_exec_lock_obj(exec, xe_vm_obj(vm)); in xe_vm_drm_exec_lock()
64 static bool preempt_fences_waiting(struct xe_vm *vm) in preempt_fences_waiting() argument
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H A Dxe_migrate_doc.h1 /* SPDX-License-Identifier: MIT */
14 * a migrate engine, and uses a special VM for all generated jobs.
16 * Special VM details
19 * The special VM is configured with a page structure where we can dynamically
20 * map BOs which need to be copied and cleared, dynamically map other VM's page
21 * table BOs for updates, and identity map the entire device's VRAM with 1 GB
37 * VM of the engine is the migrate VM.
39 * The first batch is used to update the migration VM page structure to point to
40 * the bind VM page table BOs which need to be updated. A physical page is
46 * has VRAM the bind VM page table BOs are in VRAM and the identity mapping can
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/linux/drivers/irqchip/
H A Dirq-gic-v4.c1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <linux/irqchip/arm-gic-v4.h>
26 * agnostic actually means KVM-specific - what were you thinking?).
31 * - Any guest-visible VLPI is backed by a Linux interrupt (and a
37 * - Enabling/disabling a VLPI is done by issuing mask/unmask calls.
39 * - Guest INT/CLEAR commands are implemented through
42 * - The *bizarre* stuff (mapping/unmapping an interrupt to a VLPI, or
46 * confines the crap to a single location. And map/unmap really is
62 * interrupts which are delivered when a VLPI targeting a non-running
71 * - VMs (or rather the VM abstraction that matters to the GIC)
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H A Dirq-gic-v3-its.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2013-2017 ARM Limited, All Rights Reserved.
37 #include <linux/irqchip/arm-gic-v3.h>
38 #include <linux/irqchip/arm-gic-v4.h>
43 #include "irq-gic-common.h"
44 #include "irq-gic-its-msi-parent.h"
45 #include <linux/irqchip/irq-msi-lib.h>
72 * Collection structure - just an ID, and a redistributor address to
82 * The ITS_BASER structure - contains memory information, cached
95 * The ITS structure - contains most of the infrastructure, with the
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/linux/tools/testing/selftests/mm/
H A Dcompaction_test.c1 // SPDX-License-Identifier: GPL-2.0
25 void *map; member
32 char *cmd = "cat /proc/meminfo | grep -i memfree | grep -o '[0-9]*'"; in read_memory_info()
37 return -1; in read_memory_info()
43 cmd = "cat /proc/meminfo | grep -i hugepagesize | grep -o '[0-9]*'"; in read_memory_info()
48 return -1; in read_memory_info()
62 fd = open("/proc/sys/vm/compact_unevictable_allowed", in prereq()
65 ksft_print_msg("Failed to open /proc/sys/vm/compact_unevictable_allowed: %s\n", in prereq()
67 return -1; in prereq()
71 ksft_print_msg("Failed to read from /proc/sys/vm/compact_unevictable_allowed: %s\n", in prereq()
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/linux/drivers/virt/acrn/
H A Dmm.c1 // SPDX-License-Identifier: GPL-2.0
19 static int modify_region(struct acrn_vm *vm, struct vm_memory_region_op *region) in modify_region() argument
26 return -ENOMEM; in modify_region()
28 regions->vmid = vm->vmid; in modify_region()
29 regions->regions_num = 1; in modify_region()
30 regions->regions_gpa = virt_to_phys(region); in modify_region()
35 "Failed to set memory region for VM[%u]!\n", vm->vmid); in modify_region()
42 * acrn_mm_region_add() - Set up the EPT mapping of a memory region.
43 * @vm: User VM.
44 * @user_gpa: A GPA of User VM.
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/linux/Documentation/devicetree/bindings/hwmon/
H A Dmoortec,mr75203.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Rahul Tanwar <rtanwar@maxlinear.com>
19 *) Temperature Sensor (TS) - used to monitor core temperature (e.g. mr74137).
20 *) Voltage Monitor (VM) - used to monitor voltage levels (e.g. mr74138).
21 *) Process Detector (PD) - used to assess silicon speed (e.g. mr74139).
22 *) Delay Chain - ring oscillator connected to the PD, used to measure IO
25 *) Pre Scaler - provides divide-by-X scaling of input voltage, which can then
26 be presented for VM for measurement within its range (e.g. mr76006 -
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/linux/include/uapi/drm/
H A Dpanthor_drm.h1 /* SPDX-License-Identifier: MIT */
19 * - Structures must be aligned on 64-bit/8-byte. If the object is not
21 * - Fields must be explicitly aligned to their natural type alignment with
23 * - All padding fields will be checked by the driver to make sure they are
25 * - Flags can be added, but not removed/replaced.
26 * - New fields can be added to the main structures (the structures
31 * - Ne
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/linux/arch/arm/mm/
H A Dmmu.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1995-2005 Russell King
35 #include <asm/mach/map.h>
46 * zero-initialized data and COW.
52 * The pmd table for the upper-most set of pages.
143 int i, selected = -1; in early_cachepolicy()
154 if (selected == -1) in early_cachepolicy()
240 [MT_DEVICE_NONSHARED] = { /* ARMv6 non-shared device */
467 pr_warn("Forcing write-allocate cache policy for SMP\n"); in build_mem_type_table()
478 * Pre-ARMv5 CPUs don't have TEX bits. Pre-ARMv6 CPUs or those in build_mem_type_table()
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/linux/include/linux/irqchip/
H A Darm-gic-v4.h1 /* SPDX-License-Identifier: GPL-2.0-only */
14 * ITSList mechanism to perform inter-ITS synchronization.
30 * and map/unmap when using the ITSList mechanism.
33 * vmapp_lock -> vpe_lock ->vmovp_lock.
43 /* per-vPE VLPI tracking */
77 * vPE and vLPI operations using vpe->col_idx.
86 /* Unique (system-wide) VPE identifier */
98 * @vm: Pointer to the GICv4 notion of a VM
105 struct its_vm *vm; member
127 struct its_vlpi_map *map; member
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/linux/tools/testing/selftests/kvm/s390/
H A Ducontrol_test.c1 // SPDX-License-Identifier: GPL-2.0-only
43 TEST_REQUIRE((data->effective & CAP_TO_MASK(CAP_SYS_ADMIN)) > 0); in require_ucontrol_admin()
122 * create VM with single vcpu, map kvm_run and SIE control block for easy access
131 self->kvm_fd = open_kvm_dev_path_or_exit(); in FIXTURE_SETUP()
132 self->vm_fd = ioctl(self->kvm_fd, KVM_CREATE_VM, KVM_VM_S390_UCONTROL); in FIXTURE_SETUP()
133 ASSERT_GE(self->vm_fd, 0); in FIXTURE_SETUP()
135 kvm_device_attr_get(self->vm_fd, KVM_S390_VM_CPU_MODEL, in FIXTURE_SETUP()
137 TH_LOG("create VM 0x%llx", info.cpuid); in FIXTURE_SETUP()
139 self->vcpu_fd = ioctl(self->vm_fd, KVM_CREATE_VCPU, 0); in FIXTURE_SETUP()
140 ASSERT_GE(self->vcpu_fd, 0); in FIXTURE_SETUP()
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/linux/sound/pci/ctxfi/
H A Dctvmem.c1 // SPDX-License-Identifier: GPL-2.0-only
26 * Find or create vm block based on requested @size.
30 get_vm_block(struct ct_vm *vm, unsigned int size, struct ct_atc *atc) in get_vm_block() argument
36 if (size > vm->size) { in get_vm_block()
37 dev_err(atc->card->de in get_vm_block()
75 put_vm_block(struct ct_vm * vm,struct ct_vm_block * block) put_vm_block() argument
124 ct_vm_map(struct ct_vm * vm,struct snd_pcm_substream * substream,int size) ct_vm_map() argument
152 ct_vm_unmap(struct ct_vm * vm,struct ct_vm_block * block) ct_vm_unmap() argument
164 ct_get_ptp_phys(struct ct_vm * vm,int index) ct_get_ptp_phys() argument
171 struct ct_vm *vm; ct_vm_create() local
215 ct_vm_destroy(struct ct_vm * vm) ct_vm_destroy() argument
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/linux/Documentation/mm/
H A Dovercommit-accounting.rst31 The overcommit policy is set via the sysctl ``vm.overcommit_memory``.
33 The overcommit amount can be set via ``vm.overcommit_ratio`` (percentage)
34 or ``vm.overcommit_kbytes`` (absolute value). These only have an effect
35 when ``vm.overcommit_memory`` is set to 2.
56 For a file backed map
57 | SHARED or READ-only - 0 cost (the file is the map not swap)
58 | PRIVATE WRITABLE - size of mapping per instance
60 For an anonymous or ``/dev/zero`` map
61 | SHARED - size of mapping
62 | PRIVATE READ-only - 0 cost (but of little use)
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/linux/drivers/gpu/drm/xe/tests/
H A Dxe_bo.c1 // SPDX-License-Identifier: GPL-2.0 AND MIT
9 #include <linux/iosys-map.h>
46 fence = xe_migrate_clear(tile->migrate, bo, bo->ttm.resource, in ccs_test_migrate()
56 return -ETIME; in ccs_test_migrate()
70 timeout = dma_resv_wait_timeout(bo->ttm.base.resv, in ccs_test_migrate()
76 return -ETIME; in ccs_test_migrate()
82 * we still have a CPU map. in ccs_test_migrate()
84 ttm = bo->ttm.ttm; in ccs_test_migrate()
87 return -EINVAL; in ccs_test_migrate()
91 if (ccs_page >= ttm->num_pages) { in ccs_test_migrate()
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/linux/drivers/gpu/drm/
H A Ddrm_gpuvm.c1 // SPDX-License-Identifier: GPL-2.0-only OR MIT
48 * The GPU VA manager internally uses a rb-tree to manage the
63 * entries from within dma-fence signalling critical sections it is enough to
64 * pre-allocate the &drm_gpuva structures.
66 * &drm_gem_objects which are private to a single VM can share a common
89 * lists are maintained in order to accelerate locking of dma-resv locks and
108 * sequence of operations to satisfy a given map or unmap request.
113 * implement Vulkan 'Sparse Memory Bindings' - drivers UAPIs often refer to this
114 * as VM BIND.
117 * containing map, unmap and remap operations for a given newly requested
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/linux/mm/
H A Dvmalloc.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * SMP-safe vmalloc/vfree/ioremap, Tigran Aivazian <tigran@veritas.com>, May 2000
51 #include "pgalloc-track.h"
54 static unsigned int __ro_after_init ioremap_max_page_shift = BITS_PER_LONG - 1;
106 return -ENOMEM; in vmap_pte_range()
149 if ((end - addr) != PMD_SIZE) in vmap_try_huge_pmd()
173 return -ENOMEM; in vmap_pmd_range()
184 return -ENOMEM; in vmap_pmd_range()
185 } while (pmd++, phys_addr += (next - addr), addr = next, addr != end); in vmap_pmd_range()
199 if ((end - addr) != PUD_SIZE) in vmap_try_huge_pud()
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/linux/Documentation/arch/s390/
H A Dmonreader.rst2 Linux API for read access to z/VM Monitor Records
5 Date : 2004-Nov-26
15 usable from user space and allows read access to the z/VM Monitor Records
16 collected by the `*MONITOR` System Service of z/VM.
21 The z/VM guest on which you want to access this API needs to be configured in
25 This item will use the IUCV device driver to access the z/VM services, so you
26 need a kernel with IUCV support. You also need z/VM version 4.4 or 5.1.
30 location of the monitor DCSS with the Class E privileged CP command Q NSS MAP
33 See also "CP Command and Utility Reference" (SC24-6081-00) for more information
34 on the DEF STOR and Q NSS MAP commands, as well as "Saved Segments Planning
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/linux/Documentation/gpu/rfc/
H A Di915_vm_bind.rst9 specified address space (VM). These mappings (also referred to as persistent
18 User has to opt-in for VM_BIND mode of binding for an address space (VM)
19 during VM creation time via I915_VM_CREATE_FLAGS_USE_VM_BIND extension.
27 * Multiple Virtual Address (VA) mappings can map to the same physical pages
29 * VA mapping can map to a partial section of the BO (partial binding).
34 ------------------------
38 submissions on that VM and will not be in the working set for currently running
42 -------------------------------
43 A VM in VM_BIND mode will not support older execbuf mode of binding.
52 "dma-buf: Add an API for exporting sync files"
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/linux/drivers/hwmon/
H A Dmr75203.c1 // SPDX-License-Identifier: GPL-2.0
8 * voltage monitor(VM) & process detector(PD) modules.
74 /* VM Individual Macro Register */
76 #define VM_SDIF_DONE(vm) (VM_COM_REG_SIZE + 0x34 + 0x200 * (vm)) argument
77 #define VM_SDIF_DATA(vm, ch) \ argument
78 (VM_COM_REG_SIZE + 0x40 + 0x200 * (vm) + 0x4 * (ch))
111 #define PVT_TEMP_MIN_mC -40000
117 #define PVT_SERIES5_J_CONST -100
133 * struct voltage_device - VM single input parameters.
134 * @vm_map: Map channel number to VM index.
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/linux/drivers/gpu/drm/amd/amdgpu/
H A Damdgpu_userq.c1 // SPDX-License-Identifier: MIT
40 if (adev->userq_funcs[i]) in amdgpu_userq_get_supported_ip_mask()
47 int amdgpu_userq_input_va_validate(struct amdgpu_vm *vm, u64 addr, in amdgpu_userq_input_va_validate() argument
58 r = amdgpu_bo_reserve(vm->root.bo, false); in amdgpu_userq_input_va_validate()
62 va_map = amdgpu_vm_bo_lookup_mapping(vm, user_addr); in amdgpu_userq_input_va_validate()
64 r = -EINVAL; in amdgpu_userq_input_va_validate()
67 /* Only validate the userq whether resident in the VM mapping range */ in amdgpu_userq_input_va_validate()
68 if (user_addr >= va_map->start && in amdgpu_userq_input_va_validate()
69 va_map->last - user_addr + 1 >= size) { in amdgpu_userq_input_va_validate()
70 amdgpu_bo_unreserve(vm->root.bo); in amdgpu_userq_input_va_validate()
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/linux/drivers/gpu/drm/lima/
H A Dlima_sched.c1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
5 #include <linux/iosys-map.h>
35 return -ENOMEM; in lima_sched_slab_init()
44 if (!--lima_fence_slab_refcnt) { in lima_sched_slab_fini()
64 return f->pipe->base.name; in lima_fence_get_timeline_name()
79 call_rcu(&f->base.rcu, lima_fence_release_rcu); in lima_fence_release()
96 fence->pipe = pipe; in lima_fence_create()
97 dma_fence_init(&fence->base, &lima_fence_ops, &pipe->fence_lock, in lima_fence_create()
98 pipe->fence_context, ++pipe->fence_seqno); in lima_fence_create()
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/linux/drivers/gpu/drm/i915/gem/selftests/
H A Di915_gem_coherency.c2 * SPDX-License-Identifier: MIT
30 i915_gem_object_lock(ctx->obj, NULL); in cpu_set()
31 err = i915_gem_object_prepare_write(ctx->obj, &needs_clflush); in cpu_set()
35 page = i915_gem_object_get_page(ctx->obj, offset >> PAGE_SHIFT); in cpu_set()
47 i915_gem_object_finish_access(ctx->obj); in cpu_set()
50 i915_gem_object_unlock(ctx->obj); in cpu_set()
61 i915_gem_object_lock(ctx->obj, NULL); in cpu_get()
62 err = i915_gem_object_prepare_read(ctx->obj, &needs_clflush); in cpu_get()
66 page = i915_gem_object_get_page(ctx->obj, offset >> PAGE_SHIFT); in cpu_get()
75 i915_gem_object_finish_access(ctx->obj); in cpu_get()
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/linux/tools/testing/selftests/kvm/include/
H A Dmemstress.h1 // SPDX-License-Identifier: GPL-2.0
33 struct kvm_vm *vm; member
47 /* The vCPU=>pCPU pinning map. Only valid if pin_vcpus is true. */
62 void memstress_destroy_vm(struct kvm_vm *vm);
64 void memstress_set_write_percent(struct kvm_vm *vm, uint32_t write_percent);
65 void memstress_set_random_access(struct kvm_vm *vm, bool random_access);
72 void memstress_setup_nested(struct kvm_vm *vm, int nr_vcpus, struct kvm_vcpu *vcpus[]);
74 void memstress_enable_dirty_logging(struct kvm_vm *vm, int slots);
75 void memstress_disable_dirty_logging(struct kvm_vm *vm, int slots);
76 void memstress_get_dirty_log(struct kvm_vm *vm, unsigned long *bitmaps[], int slots);
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