| /linux/Documentation/virt/kvm/x86/ |
| H A D | mmu.rst | 1 .. SPDX-License-Identifier: GPL-2.0
13 - correctness:
18 - security:
21 - performance:
23 - scaling:
25 - hardware:
26 support the full range of x86 virtualization hardware
27 - integration:
31 - dirty tracking:
33 and framebuffer-based displays
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| /linux/drivers/net/wireless/ath/ath10k/ |
| H A D | core.h | 1 /* SPDX-License-Identifier: ISC */
3 * Copyright (c) 2005-2011 Atheros Communications Inc.
4 * Copyright (c) 2011-2017 Qualcomm Atheros, Inc.
5 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved.
47 #define ATH10K_DEFAULT_NOISE_FLOOR -95
68 /* SMBIOS type structure length (excluding strings-set) */
145 return (struct ath10k_skb_cb *)&IEEE80211_SKB_CB(skb)->driver_data; in ATH10K_SKB_CB()
150 BUILD_BUG_ON(sizeof(struct ath10k_skb_rxcb) > sizeof(skb->cb)); in ATH10K_SKB_RXCB()
151 return (struct ath10k_skb_rxcb *)skb->cb; in ATH10K_SKB_RXCB()
210 /* Protected by data_lock */
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| /linux/arch/x86/kvm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
53 tristate "Kernel-based Virtual Machine (KVM) support"
56 Support hosting fully virtualized guest machines using hardware
61 This module provides access to the hardware capabilities through
70 bool "Compile KVM with -Werror"
71 # Disallow KVM's -Werror if KASAN is enabled, e.g. to guard against
75 # Building KVM with -Werror and KASAN is still doable via enabling
76 # the kernel-wide WERROR=y.
79 Add -Werror to the build flags for KVM.
84 bool "Enable support for KVM software-protected VMs"
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| /linux/Documentation/filesystems/ |
| H A D | fscrypt.rst | 2 Filesystem-level encryption (fscrypt)
11 Note: "fscrypt" in this document refers to the kernel-level portion,
14 covers the kernel-level portion. For command-line examples of how to
20 <https://source.android.com/security/encryption/file-based>`_, over
25 Unlike dm-crypt, fscrypt operates at the filesystem level rather than
28 filesystem. This is useful for multi-user systems where each user's
29 data-at-rest needs to be cryptographically isolated from the others.
34 directly into supported filesystems --- currently ext4, F2FS, UBIFS,
44 fscrypt does not support encrypting files in-place. Instead, it
54 ---------------
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| /linux/include/drm/ |
| H A D | gpu_scheduler.h | 28 #include <linux/dma-fence.h>
36 * DRM_SCHED_FENCE_DONT_PIPELINE - Prevent dependency pipelining
45 * DRM_SCHED_FENCE_FLAG_HAS_DEADLINE_BIT - A fence deadline hint has been set
75 * struct drm_sched_entity - A wrapper around a job queue (typically
78 * Entities will emit jobs in order to their corresponding hardware
89 * Protected by &drm_sched_rq.lock of @rq.
96 * Lock protecting the run-queue (@rq) to which this entity belongs,
106 * FIXME: Locking is very unclear for this. Writers are protected by
141 * drm_sched_entity_set_priority(). Protected by @lock.
239 * struct drm_sched_rq - queue of entities to be scheduled.
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| H A D | drm_mode_config.h | 42 * struct drm_mode_config_funcs - basic driver provided mode setting functions
44 * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
59 * ie. when (@mode_cmd->flags & DRM_MODE_FB_MODIFIERS) == 0.
70 * driver-specific information (like the internal native buffer object
116 * function must reject any modeset and state changes which the hardware
120 * - Checking that the modes, framebuffers, scaling and placement
121 * requirements and so on are within the limits of the hardware.
123 * - Checking that any hidden shared resources are not oversubscribed.
128 * - Checking that virtualized resources exported to userspace are not
131 * example is dual-pipe operations (which generally should be hidden
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| /linux/Documentation/RCU/ |
| H A D | rcu_dereference.rst | 17 (prefix "*"), field selection ("->"), assignment ("="), address-of
27 - You must use one of the rcu_dereference() family of primitives
28 to load an RCU-protected pointer, otherwise CONFIG_PROVE_RCU
29 will complain. Worse yet, your code can see random memory-corruption
45 - In the special case where data is added but is never removed
51 - You are only permitted to use rcu_dereference() on pointer values.
57 - Set bits and clear bits down in the must-be-zero low-order
62 - XOR bits to translate pointers, as is done in some
63 classic buddy-allocator algorithms.
68 - Avoid cancellation when using the "+" and "-" infix arithmetic
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| /linux/Documentation/dev-tools/ |
| H A D | kfence.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 Kernel Electric-Fence (KFENCE)
7 Kernel Electric-Fence (KFENCE) is a low-overhead sampling-based memory safety
8 error detector. KFENCE detects heap out-of-bounds access, use-after-free, and
9 invalid-free errors.
15 non-production test workloads. One way to quickly achieve a large enough total
19 -----
26 ``kfence.sample_interval`` to non-zero value), configure the kernel with::
46 causes CPU wake-ups when the system is completely idle. This may be undesirable
47 on power-constrained systems. The boot parameter ``kfence.deferrable=1``
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| /linux/Documentation/fb/ |
| H A D | uvesafb.rst | 2 uvesafb - A Generic Driver for VBE2+ compliant video cards
6 ---------------
30 --------------------------
36 - Lack of any type of acceleration.
37 - A strict and limited set of supported video modes. Often the native
42 ratio, which is what most BIOS-es are limited to.
43 - Adjusting the refresh rate is only possible with a VBE 3.0 compliant
44 Video BIOS. Note that many nVidia Video BIOS-es claim to be VBE 3.0
48 ----------------
54 video=uvesafb:1024x768-32,mtrr:3,ywrap (compiled into the kernel)
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| /linux/tools/memory-model/Documentation/ |
| H A D | README | 4 Linux-kernel memory model (LKMM) audience might be anywhere from novice
12 If LKMM-specific terms lost you, glossary.txt might help you.
14 o You are new to Linux-kernel concurrency: simple.txt
16 o You have some background in Linux-kernel concurrency, and would
17 like an overview of the types of low-level concurrency primitives
22 o You are familiar with the Linux-kernel concurrency primitives
24 tests: litmus-tests.txt
27 protected by a lock: locking.txt
30 recipes.txt, but is self-contained.
32 o You are familiar with Linux-kernel concurrency, and would
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| H A D | access-marking.txt | 1 MARKING SHARED-MEMORY ACCESSES
6 not use read-modify-write atomic operations. It also describes how to
13 ACCESS-MARKING OPTIONS
16 The Linux kernel provides the following access-marking options:
18 1. Plain C-language accesses (unmarked), for example, "a = b;"
20 2. Data-race marking, for example, "data_race(a = b);"
30 6. KCSAN's negative-marking assertions, ASSERT_EXCLUSIVE_ACCESS()
32 "ACCESS-DOCUMENTATION OPTIONS" section below.
39 Neither plain C-language accesses nor data_race() (#1 and #2 above) place
42 compiler's use of code-motion and common-subexpression optimizations.
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| /linux/Documentation/admin-guide/mm/ |
| H A D | userfaultfd.rst | 8 Userfaults allow the implementation of on-demand paging from userland
38 Vmas are not suitable for page- (or hugepage) granular fault tracking
48 is a corner case that would currently return ``-EBUSY``).
54 ----------------------
63 - Any user can always create a userfaultfd which traps userspace page faults
67 - In order to also trap kernel page faults for the address space, either the
84 --------------------------
101 - The ``UFFD_FEATURE_EVENT_*`` flags indicate that various other events
103 detail below in the `Non-cooperative userfaultfd`_ section.
105 - ``UFFD_FEATURE_MISSING_HUGETLBFS`` and ``UFFD_FEATURE_MISSING_SHMEM``
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| /linux/arch/x86/kvm/mmu/ |
| H A D | spte.h | 1 // SPDX-License-Identifier: GPL-2.0-only
13 * in hardware. E.g. MMIO SPTEs are not considered present. Use bit 11, as it
22 * be restricted to using write-protection (for L2 when CPU dirty logging, i.e.
28 * is guaranteed to have A/D bits and write-protection is forced only for
29 * TDP with CPU dirty logging (PML). If NPT ever gains PML-like support, it
30 * must be restricted to 64-bit KVM.
40 #define SPTE_BASE_ADDR_MASK (physical_mask & ~(u64)(PAGE_SIZE-1))
42 #define SPTE_BASE_ADDR_MASK (((1ULL << 52) - 1) & ~(u64)(PAGE_SIZE-1))
64 * as not-present for access tracking purposes. We do not save the W bit as the
78 * SPTE is write-protected. See is_writable_pte() for details.
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| /linux/drivers/net/ethernet/aquantia/atlantic/macsec/ |
| H A D | macsec_struct.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
21 /*! The match mask is per-nibble. 0 means don't care, i.e. every value
122 /*! Mask is per-byte.
137 * For explicit SECTAG, AN is hardware controlled. For sending
142 /*! Mask is per-byte.
148 * PN number is hardware controlled.
151 /*! Mask is per-byte.
156 /*! Mask is per-byte.
171 /*! Mask is per-byte.
176 /*! Mask is per-byte.
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| /linux/drivers/gpu/drm/vmwgfx/ |
| H A D | vmwgfx_so.c | 1 // SPDX-License-Identifier: GPL-2.0 OR MIT
3 * Copyright 2014-2015 VMware, Inc., Palo Alto, CA., USA
19 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
35 * destroy a hardware surface, all views pointing to it must also be destroyed,
44 * struct vmw_view - view metadata
48 * @ctx: Non-refcounted pointer to the context this view belongs to.
51 * @srf_head: List head for the surface-to-view list.
52 * @cotable_head: List head for the cotable-to_view list.
54 * @view_id: User-space per context view id. Currently used also as per
68 struct list_head srf_head; /* Protected by binding_mutex */
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| H A D | vmwgfx_cmdbuf.c | 1 // SPDX-License-Identifier: GPL-2.0 OR MIT
4 * Copyright 2015-2023 VMware, Inc., Palo Alto, CA., USA
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
42 (1024 - ALIGN(sizeof(SVGACBHeader), VMW_CMDBUF_INLINE_ALIGN))
45 * struct vmw_cmdbuf_context - Command buffer context queues
48 * manager but not yet submitted to hardware.
49 * @hw_submitted: List of command buffers submitted to hardware.
51 * @num_hw_submitted: Number of buffers currently being processed by hardware
63 * struct vmw_cmdbuf_man - Command buffer manager
76 * data is protected by @lock.
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| /linux/arch/m68k/mm/ |
| H A D | hwtest.c | 1 // SPDX-License-Identifier: GPL-2.0
2 /* Tests for presence or absence of hardware registers.
8 * The test is for use when trying to read a hardware register
12 * There is a test-by-reading and a test-by-writing; I present
15 * -- PMM <pmaydell@chiark.greenend.org.uk>, 05/1998
19 * hardware register address. It is called very early in the kernel
60 /* Basically the same, but writes a value into a word register, protected
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| /linux/arch/x86/kernel/ |
| H A D | umip.c | 2 * umip.c Emulation for instruction protected by the User-Mode Instruction
6 * Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
13 #include <asm/insn-eval.h>
19 /** DOC: Emulation for User-Mode Instruction Prevention (UMIP)
21 * User-Mode Instruction Prevention is a security feature present in recent
27 * the UMIP-protected instructions (in the form of a SIGSEGV signal), it can be
38 * The instructions protected by UMIP can be split in two groups. Those which
44 * not the actual location of the table. The result is emulated as a hard-coded
52 * - SLDT returns (GDT_ENTRY_LDT * 8) if an LDT has been set, 0 if not.
53 * - STR returns (GDT_ENTRY_TSS * 8).
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| /linux/drivers/net/wireless/marvell/libertas/ |
| H A D | dev.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
73 /* Hardware debugging */
94 /* Hardware access */
130 /* Command responses sent from the hardware to the driver */
135 /* Events sent from hardware to driver */
156 int tx_pending_len; /* -1 while building packet */
158 /* protected by hard_start_xmit serialization */
201 r = netif_running(priv->dev); in lbs_iface_active()
202 if (priv->mesh_dev) in lbs_iface_active()
203 r |= netif_running(priv->mesh_dev); in lbs_iface_active()
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| /linux/Documentation/kernel-hacking/ |
| H A D | locking.rst | 37 +------------------------------------+------------------------------------+
41 +------------------------------------+------------------------------------+
43 +------------------------------------+------------------------------------+
45 +------------------------------------+------------------------------------+
47 +------------------------------------+------------------------------------+
49 +------------------------------------+------------------------------------+
51 +------------------------------------+------------------------------------+
57 +------------------------------------+------------------------------------+
61 +------------------------------------+------------------------------------+
63 +------------------------------------+------------------------------------+
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| /linux/drivers/gpu/drm/xe/ |
| H A D | xe_exec_queue_types.h | 1 /* SPDX-License-Identifier: MIT */
25 XE_EXEC_QUEUE_PRIORITY_UNSET = -2, /* For execlist usage only */
35 * struct xe_exec_queue - Execution queue
47 * @hwe: A hardware of the same class. May (physical engine) or may not
66 /** @msix_vec: MSI-X vector (for platforms that support it) */
72 * @last_fence: last fence on exec queue, protected by vm->lock in write
73 * mode if bind exec queue, protected by dma resv lock if non-bind exec
84 /* child of VM queue for multi-tile VM jobs */
100 /** @multi_gt_list: list head for VM bind engines if multi-GT */
102 /** @multi_gt_link: link for VM bind engines if multi-GT */
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| /linux/drivers/net/ethernet/sfc/siena/ |
| H A D | nic.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright 2005-2006 Fen Systems Ltd.
5 * Copyright 2006-2013 Solarflare Communications Inc.
90 * struct siena_nic_data - Siena NIC state
92 * @wol_filter_id: Wake-on-LAN packet filter id
93 * @stats: Hardware statistics
97 * @local_addr_list: List of local addresses. Protected by %local_lock.
99 * %local_addr_list. Protected by %local_lock.
|
| /linux/Documentation/hwmon/ |
| H A D | mc33xs2410_hwmon.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 Datasheet: https://www.nxp.com/docs/en/data-sheet/MC33XS2410.pdf
17 -----------
19 The MC33XS2410 is a four channel self-protected high-side switch featuring
20 hardware monitoring functions such as temperature, current and voltages for each
24 -------------
30 temp[2-5]_label "Channel [1-4] temperature"
31 temp[2-5]_input Measured temperature of a single channel
32 temp[2-5]_alarm Temperature alarm
33 temp[2-5]_max Maximal temperature
|
| /linux/include/linux/ |
| H A D | blk-crypto-profile.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
10 #include <linux/blk-crypto.h>
15 * struct blk_crypto_ll_ops - functions to control inline encryption hardware
17 * Low-level operations for controlling inline encryption hardware. This
19 * encryption. All functions may sleep, are serialized by profile->lock, and
20 * are never called while profile->dev (if set) is runtime-suspended.
25 * @keyslot_program: Program a key into the inline encryption hardware.
28 * hardware, overwriting any key that the keyslot may already contain.
29 * The keyslot is guaranteed to not be in-use by any I/O.
32 * device is a layered device, or if the device is real hardware that
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| /linux/arch/s390/kvm/ |
| H A D | pv.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Hosting Protected Virtual Machines
21 #include "kvm-s390.h"
25 lockdep_assert_held(&kvm->lock); in kvm_s390_pv_is_protected()
32 lockdep_assert_held(&vcpu->mutex); in kvm_s390_pv_cpu_is_protected()
38 * kvm_s390_pv_make_secure() - make one guest page secure
43 * Context: needs to be called with kvm->srcu held.
50 lockdep_assert_held(&kvm->srcu); in kvm_s390_pv_make_secure()
54 return -EFAULT; in kvm_s390_pv_make_secure()
55 return make_hva_secure(kvm->mm, vmaddr, uvcb); in kvm_s390_pv_make_secure()
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