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/linux-6.14.4/drivers/misc/
Dsram-exec.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * SRAM protect-exec region helper functions
5 * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
25 unsigned long base = (unsigned long)part->base; in sram_check_protect_exec()
26 unsigned long end = base + block->size; in sram_check_protect_exec()
29 dev_err(sram->dev, in sram_check_protect_exec()
30 "SRAM pool marked with 'protect-exec' is not page aligned and will not be created.\n"); in sram_check_protect_exec()
31 return -ENOMEM; in sram_check_protect_exec()
40 list_add_tail(&part->list, &exec_pool_list); in sram_add_protect_exec()
47 * sram_exec_copy - copy data to a protected executable region of sram
[all …]
/linux-6.14.4/drivers/gpu/drm/xe/
Dxe_hw_engine_group_types.h1 /* SPDX-License-Identifier: MIT */
14 * enum xe_hw_engine_group_execution_mode - possible execution modes of a hw
17 * @EXEC_MODE_LR: execution in long-running mode
26 * struct xe_hw_engine_group - Hardware engine group
33 * @exec_queue_list: list of exec queues attached to this
37 /** @resume_work: worker to resume faulting LR exec queues */
39 /** @resume_wq: workqueue to resume faulting LR exec queues */
42 * @mode_sem: used to protect this group's hardware resources and ensure
Dxe_exec_queue.c1 // SPDX-License-Identifier: MIT
41 if (q->vm) in __xe_exec_queue_free()
42 xe_vm_put(q->vm); in __xe_exec_queue_free()
44 if (q->xef) in __xe_exec_queue_free()
45 xe_file_put(q->xef); in __xe_exec_queue_free()
57 struct xe_gt *gt = hwe->gt; in __xe_exec_queue_alloc()
65 return ERR_PTR(-ENOMEM); in __xe_exec_queue_alloc()
67 kref_init(&q->refcount); in __xe_exec_queue_alloc()
68 q->flags = flags; in __xe_exec_queue_alloc()
69 q->hwe = hwe; in __xe_exec_queue_alloc()
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Dxe_vm.c1 // SPDX-License-Identifier: MIT
8 #include <linux/dma-fence-array.h>
44 return vm->gpuvm.r_obj; in xe_vm_obj()
48 * xe_vma_userptr_check_repin() - Advisory check for repin needed
53 * without the vm->userptr.notifier_lock held. There is no guarantee that the
57 * Return: 0 if userptr vma is valid, -EAGAIN otherwise; repin recommended.
61 return mmu_interval_check_retry(&uvma->userptr.notifier, in xe_vma_userptr_check_repin()
62 uvma->userptr.notifier_seq) ? in xe_vma_userptr_check_repin()
63 -EAGAIN : 0; in xe_vma_userptr_check_repin()
68 struct xe_vma *vma = &uvma->vma; in xe_vma_userptr_pin_pages()
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Dxe_device_types.h1 /* SPDX-License-Identifier: MIT */
3 * Copyright © 2022-2023 Intel Corporation
40 #define GRAPHICS_VER(xe) ((xe)->info.graphics_verx100 / 100)
41 #define MEDIA_VER(xe) ((xe)->info.media_verx100 / 100)
42 #define GRAPHICS_VERx100(xe) ((xe)->info.graphics_verx100)
43 #define MEDIA_VERx100(xe) ((xe)->info.media_verx100)
44 #define IS_DGFX(xe) ((xe)->info.is_dgfx)
55 ((_xe)->info.platform == (_platform) && \
56 (_xe)->info.step.graphics >= (min_step) && \
57 (_xe)->info.step.graphics < (max_step))
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/linux-6.14.4/tools/testing/selftests/exec/
Dcheck-exec-tests.sh2 # SPDX-License-Identifier: GPL-2.0
7 # samples/check-exec/inc.c
11 set -u -e -o pipefail
14 exec 2>/dev/null
16 DIR="$(dirname $(readlink -f "$0"))"
29 if [[ ${ret} -ne ${expect} ]]; then
33 if [[ ${ret} -eq 0 && "${out}" != "${EXPECTED_OUTPUT}" ]]; then
49 if [[ ${ret} -ne ${expect} ]]; then
53 if [[ ${ret} -eq 0 && "${out}" != "${EXPECTED_OUTPUT}" ]]; then
67 out="$("$@" ./inc -i < "${script}")" || ret=$?
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/linux-6.14.4/Documentation/gpu/
Ddrm-vm-bind-locking.rst1 .. SPDX-License-Identifier: (GPL-2.0+ OR MIT)
30 meta-data. Typically one per client (DRM file-private), or one per
33 associated meta-data. The backing storage of a gpu_vma can either be
34 a GEM object or anonymous or page-cache pages mapped also into the CPU
40 is anonymous or page-cache pages as described above.
43 page-table entries point to that backing store.
47 the :doc:`dma-buf doc </driver-api/dma-buf>`.
53 allows deadlock-safe locking of multiple dma_resvs in arbitrary
55 :doc:`dma-buf doc </driver-api/dma-buf>`.
56 * ``exec function``: An exec function is a function that revalidates all
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/linux-6.14.4/drivers/gpu/drm/
Ddrm_gpuvm.c1 // SPDX-License-Identifier: GPL-2.0-only OR MIT
47 * The GPU VA manager internally uses a rb-tree to manage the
62 * entries from within dma-fence signalling critical sections it is enough to
63 * pre-allocate the &drm_gpuva structures.
88 * lists are maintained in order to accelerate locking of dma-resv locks and
112 * implement Vulkan 'Sparse Memory Bindings' - drivers UAPIs often refer to this
150 * created such that those mappings are split up and re-mapped partically.
161 * dma-fence signalling critical path.
172 * by drm_gpuvm_sm_map() - it doesn't cover any arbitrary combinations of these.
180 * old: |-----------| (bo_offset=n)
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/linux-6.14.4/Documentation/userspace-api/
Dcheck_exec.rst1 .. SPDX-License-Identifier: GPL-2.0
12 `samples/check-exec/inc.c`_ example.
41 Programs should always perform this check to apply kernel-level checks against
60 To avoid race conditions leading to time-of-check to time-of-use issues,
76 securebits but without relying on any other user-controlled configuration.
103 of any exec securebits:
122 users. That can protect against unintended script executions (e.g. ``sh
123 /tmp/*.sh``). This makes sense for (semi-restricted) user sessions.
131 dm-verity/IPE) but where access rights might not be ready yet. Indeed,
143 .. _samples/check-exec/inc.c:
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Dmseal.rst1 .. SPDX-License-Identifier: GPL-2.0
17 such an attacker primitive can break control-flow integrity guarantees
18 since read-only memory that is supposed to be trusted can become writable
29 -----------------------
34 - The start address must be in an allocated VMA.
35 - The start address must be page aligned.
36 - The end address (**addr** + **len**) must be in an allocated VMA.
37 - no gap (unallocated memory) between start and end address.
44 - **0**: Success.
45 - **-EINVAL**:
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/linux-6.14.4/Documentation/devicetree/bindings/arm/omap/
Dmpu.txt1 * TI - MPU (Main Processor Unit) subsystem
8 - compatible : Should be "ti,omap3-mpu" for OMAP3
9 Should be "ti,omap4-mpu" for OMAP4
10 Should be "ti,omap5-mpu" for OMAP5
11 - ti,hwmods: "mpu"
14 - sram: Phandle to the ocmcram node
17 - pm-sram: Phandles to ocmcram nodes to be used for power management.
18 First should be type 'protect-exec' for the driver to use to copy
25 - For an OMAP5 SMP system:
28 compatible = "ti,omap5-mpu";
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/linux-6.14.4/tools/testing/selftests/powerpc/mm/
Dpkey_siginfo.c1 // SPDX-License-Identifier: GPL-2.0
44 if (sinfo->si_code != SEGV_PKUERR) { in segv_handler()
50 if (sinfo->si_addr != (void *) fault_addr) { in segv_handler()
68 pgstart = (void *) ((unsigned long) fault_addr & ~(pgsize - 1)); in segv_handler()
72 * reassociate the page with the exec-only pkey since execute in segv_handler()
77 * read-write rights, change the AMR permission bits for the in segv_handler()
97 static void *protect(void *p) in protect() function
105 base = ((struct region *) p)->base; in protect()
106 size = ((struct region *) p)->size; in protect()
119 * Repeatedly try to protect the common region with a permissive in protect()
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/linux-6.14.4/Documentation/devicetree/bindings/memory-controllers/ti/
Demif.txt3 EMIF - External Memory Interface - is an SDRAM controller used in
11 - compatible : Should be of the form "ti,emif-<ip-rev>" where <ip-rev>
14 "ti,emif-am3352"
15 "ti,emif-am4372"
16 "ti,emif-dra7xx"
17 "ti,emif-keystone"
19 - phy-type : <u32> indicating the DDR phy type. Following are the
24 - device-handle : phandle to a "lpddr2" node representing the memory part
26 - ti,hwmods : For TI hwmods processing and omap device creation
29 - interrupts : interrupt used by the controller
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/linux-6.14.4/arch/powerpc/mm/
Dpgtable.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 * Copyright (C) 1995-1996 Gary Thomas ([email protected])
29 #include <asm/pte-walk.h>
41 return current->thread.regs && TRAP(current->thread.regs) == 0x400; in is_exec_fault()
76 /* Server-style MMU handles coherency when hashing if HW exec permission
77 * is supposed per page (currently 64-bit only). If not, then, we always
78 * flush the cache for valid PTEs in set_pte. Embedded CPU without HW exec
90 if (!test_bit(PG_dcache_clean, &folio->flags)) { in set_pte_filter_hash()
92 set_bit(PG_dcache_clean, &folio->flags); in set_pte_filter_hash()
104 /* Embedded type MMU with HW exec support. This is a bit more complicated
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/linux-6.14.4/Documentation/arch/x86/
Dshstk.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Control-flow Enforcement Technology (CET) Shadow Stack
10 Control-flow Enforcement Technology (CET) covers several related x86 processor
12 can protect both applications and the kernel.
20 control-protection fault. IBT verifies indirect CALL/JMP targets are intended
22 Stack and Indirect Branch Tracking. Today in the 64-bit kernel, only userspace
45 from readelf/llvm-readelf output::
47 readelf -n <application> | grep -a SHSTK
60 on a per-thread basis. The enablement status is inherited on clone, so if the
90 -EPERM if any of the passed feature are locked.
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/linux-6.14.4/include/drm/
Ddrm_gpuvm.h1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
28 #include <linux/dma-resv.h>
42 * enum drm_gpuva_flags - flags for struct drm_gpuva
66 * struct drm_gpuva - structure to track a GPU VA mapping
126 * @rb: structure containing data to store &drm_gpuvas in a rb-tree
130 * @rb.node: the rb-tree node
138 * through the rb-tree while doing modifications on the rb-tree
144 * @rb.__subtree_last: needed by the interval tree, holding last-in-subtree
166 va->va.addr = addr; in drm_gpuva_init()
167 va->va.range = range; in drm_gpuva_init()
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/linux-6.14.4/drivers/gpu/drm/amd/amdgpu/
Damdgpu_gem.c32 #include <linux/dma-buf.h>
49 struct ttm_buffer_object *bo = vmf->vma->vm_private_data; in amdgpu_gem_fault()
50 struct drm_device *ddev = bo->base.dev; in amdgpu_gem_fault()
65 ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, in amdgpu_gem_fault()
70 ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot); in amdgpu_gem_fault()
72 if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) in amdgpu_gem_fault()
76 dma_resv_unlock(bo->base.resv); in amdgpu_gem_fault()
92 ttm_bo_put(&aobj->tbo); in amdgpu_gem_object_free()
124 bo = &ubo->bo; in amdgpu_gem_object_create()
125 *obj = &bo->tbo.base; in amdgpu_gem_object_create()
[all …]
Damdgpu_amdkfd_gpuvm.c1 // SPDX-License-Identifier: MIT
3 * Copyright 2014-2018 Advanced Micro Devices, Inc.
23 #include <linux/dma-buf.h>
73 #define domain_string(domain) domain_bit_to_string[ffs(domain)-1]
82 list_for_each_entry(entry, &mem->attachments, list) in kfd_mem_is_attached()
83 if (entry->bo_va->base.vm == avm) in kfd_mem_is_attached()
90 * reuse_dmamap() - Check whether adev can share the original
104 return (adev->ram_is_direct_mapped && bo_adev->ram_is_direct_mapped) || in reuse_dmamap()
105 (adev->dev->iommu_group == bo_adev->dev->iommu_group); in reuse_dmamap()
109 * System (TTM + userptr) memory - 15/16th System RAM
[all …]
/linux-6.14.4/fs/
Dexec.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/fs/exec.c
9 * #!-checking implemented by tytso.
12 * Demand-loading implemented 01.12.91 - no need to read anything but
14 * "current->executable", and page faults do the actual loading. Clean.
17 * was less than 2 hours work to get demand-loading completely implemented.
20 * current->executable is only used by the procfs. This allows a dispatch
91 insert ? list_add(&fmt->lh, &formats) : in __register_binfmt()
92 list_add_tail(&fmt->lh, &formats); in __register_binfmt()
101 list_del(&fmt->lh); in unregister_binfmt()
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/linux-6.14.4/Documentation/devicetree/bindings/sram/
Dsram.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic on-chip SRAM
10 - Rob Herring <[email protected]>
19 Following the generic-names recommended practice, node names should
30 - mmio-sram
31 - amlogic,meson-gxbb-sram
32 - arm,juno-sram-ns
33 - atmel,sama5d2-securam
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/linux-6.14.4/include/uapi/linux/
Dtaskstats.h1 /* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */
2 /* taskstats.h - exporting per-task statistics
22 /* Format for per-task data returned to userland when
23 * - a task exits
24 * - listener requests stats for a task
33 * c) add new fields after version comment; maintain 64-bit alignment
78 /* Following four fields atomically updated using task->delays->lock */
94 /* cpu "wall-clock" running time
133 /* Accumulated RSS usage in duration of a task, in MBytes-usecs.
139 __u64 coremem; /* accumulated RSS usage in MB-usec */
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/linux-6.14.4/drivers/gpu/drm/panthor/
Dpanthor_mmu.c1 // SPDX-License-Identifier: GPL-2.0 or MIT
16 #include <linux/dma-mapping.h>
20 #include <linux/io-pgtable.h>
42 * struct panthor_as_slot - Address space slot
50 * struct panthor_mmu - MMU related data
59 * us to re-assign them to re-assign slots on-demand.
105 * struct panthor_vm_pool - VM pool object
113 * struct panthor_vma - GPU mapping object
133 * struct panthor_vm_op_ctx - VM operation context
135 * With VM operations potentially taking place in a dma-signaling path, we
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/linux-6.14.4/Documentation/driver-api/
Ddma-buf.rst1 Buffer Sharing and Synchronization (dma-buf)
4 The dma-buf subsystem provides the framework for sharing buffers for
14 interact with the three main primitives offered by dma-buf:
16 - dma-buf, representing a sg_table and exposed to userspace as a file
19 - dma-fence, providing a mechanism to signal when an asynchronous
21 - dma-resv, which manages a set of dma-fences for a particular dma-buf
22 allowing implicit (kernel-ordered) synchronization of work to
27 --------------------------------
29 For more details on how to design your subsystem's API for dma-buf use, please
30 see Documentation/userspace-api/dma-buf-alloc-exchange.rst.
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/linux-6.14.4/tools/testing/selftests/drivers/net/
Dstats.py2 # SPDX-License-Identifier: GPL-2.0
20 def check_pause(cfg) -> None:
24 ethnl.pause_get({"header": {"dev-index": cfg.ifindex}})
30 data = ethnl.pause_get({"header": {"dev-index": cfg.ifindex,
35 def check_fec(cfg) -> None:
39 ethnl.fec_get({"header": {"dev-index": cfg.ifindex}})
45 data = ethnl.fec_get({"header": {"dev-index": cfg.ifindex,
50 def pkt_byte_sum(cfg) -> None:
65 for key in ['tx-packets', 'tx-bytes', 'rx-packets', 'rx-bytes']:
72 for key in ['tx-packets', 'tx-bytes', 'rx-packets', 'rx-bytes']:
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/linux-6.14.4/Documentation/filesystems/
Daffs.rst1 .. SPDX-License-Identifier: GPL-2.0
19 in file names are case-insensitive, as they ought to be.
44 protect
107 Amiga -> Linux:
111 - R maps to r for user, group and others. On directories, R implies x.
113 - W maps to w.
115 - E maps to x.
117 - D is ignored.
119 - H, S and P are always retained and ignored under Linux.
121 - A is cleared when a file is written to.
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