| /openbmc/qemu/docs/devel/migration/ |
| H A D | mapped-ram.rst | 1 Mapped-ram
4 Mapped-ram is a new stream format for the RAM section designed to
12 guest is constantly dirtying pages (i.e. live migration). Another
22 -----
25 ``mapped-ram`` capabilities:
29 ``migrate_set_capability mapped-ram on``
35 Mapped-ram migration is best done non-live, i.e. by stopping the VM on
38 For best performance enable the ``direct-io`` parameter as well:
40 ``migrate_set_parameter direct-io on``
42 Use-cases
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| /openbmc/qemu/docs/ |
| H A D | xbzrle.txt | 5 of VM downtime and the total live-migration time of Virtual machines.
13 live migration.
27 The page data delta is represented by zero and non zero runs.
29 A non zero run is represented by its length (in bytes) and the new data.
50 VEE 2011: Evaluation of Delta Compression Techniques for Efficient Live
55 XBZRLE has a sustained bandwidth of 2-2.5 GB/s for typical workloads making it
56 ideal for in-line, real-time encoding such as is needed for live-migration.
91 3. Set the XBZRLE cache size - the cache size is in MBytes and should be a
93 {qemu} migrate_set_parameter xbzrle-cache-size 256m
96 {qemu} migrate -d tcp:destination.host:4444
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| /openbmc/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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| /openbmc/linux/Documentation/admin-guide/LSM/ |
| H A D | tomoyo.rst | 8 TOMOYO is a name-based MAC extension (LSM module) for the Linux kernel.
10 LiveCD-based tutorials are available at
12 http://tomoyo.sourceforge.jp/1.8/ubuntu12.04-live.html
13 http://tomoyo.sourceforge.jp/1.8/centos6-live.html
15 Though these tutorials use non-LSM version of TOMOYO, they are useful for you
29 User <-> Kernel interface documentation is available at
30 https://tomoyo.osdn.jp/2.5/policy-specification/index.html .
38 https://osdn.jp/projects/tomoyo/docs/lca2009-takeda.pdf
40 https://osdn.jp/projects/tomoyo/docs/freedomhectaipei-tomoyo.pdf
42 https://osdn.jp/projects/tomoyo/docs/PacSec2007-en-no-demo.pdf
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| /openbmc/linux/include/linux/ |
| H A D | livepatch.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * livepatch.h - Kernel Live Patching Core
21 #define KLP_UNDEFINED -1
26 * struct klp_func - function structure for live patching
83 * struct klp_callbacks - pre/post live-(un)patch callback structure
88 * @post_unpatch_enabled: flag indicating if post-unpatch callback
91 * All callbacks are optional. Only the pre-patch callback, if provided,
93 * patch for any reason, including a non-zero error status returned from
94 * the pre-patch callback, no further callbacks will be executed.
105 * struct klp_object - kernel object structure for live patching
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| /openbmc/linux/arch/arm64/include/uapi/asm/ |
| H A D | sigcontext.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
25 * Signal context structure - contains all info to do with the state
53 * New records that can exceed this space need to be opt-in for userspace, so
63 * and be 16-byte aligned. The last structure must be a dummy one with the
85 * Note: similarly to all other integer fields, each V-register is stored in an
86 * endianness-dependent format, with the byte at offset i from the start of the
87 * in-memory representation of the register value containing
89 * bits [(7 + 8 * i) : (8 * i)] of the register on little-endian hosts; or
90 * bits [(127 - 8 * i) : (120 - 8 * i)] on big-endian hosts.
119 * 16-byte aligned address immediately after the terminating null
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| /openbmc/linux/Documentation/networking/device_drivers/ethernet/amd/ |
| H A D | pds_vfio_pci.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
2 .. note: can be edited and viewed with /usr/bin/formiko-vim
14 The ``pds-vfio-pci`` module is a PCI driver that supports Live Migration
20 The pds-vfio-pci device is enabled via multiple configuration steps and
21 depends on the ``pds_core`` driver to create and enable SR-IOV Virtual
26 example assumes the pds_core and pds-vfio-pci modules are already
29 .. code-block:: bash
30 :name: example-setup-script
38 # Prevent non-vfio VF driver from probing the VF device
41 # Create single VF for Live Migration via pds_core
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| /openbmc/linux/Documentation/bpf/ |
| H A D | bpf_prog_run.rst | 1 .. SPDX-License-Identifier: GPL-2.0
16 --------
20 can be used to unit test BPF programs against user-supplied context objects, and
28 - ``BPF_PROG_TYPE_SOCKET_FILTER``
29 - ``BPF_PROG_TYPE_SCHED_CLS``
30 - ``BPF_PROG_TYPE_SCHED_ACT``
31 - ``BPF_PROG_TYPE_XDP``
32 - ``BPF_PROG_TYPE_SK_LOOKUP``
33 - ``BPF_PROG_TYPE_CGROUP_SKB``
34 - ``BPF_PROG_TYPE_LWT_IN``
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| /openbmc/linux/Documentation/devicetree/bindings/display/xlnx/ |
| H A D | xlnx,zynqmp-dpsub.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/xlnx/xlnx,zynqmp-dpsub.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
14 +------------------------------------------------------------+
15 +--------+ | +----------------+ +-----------+ |
16 | DPDMA | --->| | --> | Video | Video +-------------+ |
17 | 4x vid | | | | | Rendering | -+--> | | | +------+
18 | 2x aud | | | Audio/Video | --> | Pipeline | | | DisplayPort |---> | PHY0 |
19 +--------+ | | Buffer Manager | +-----------+ | | Source | | +------+
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| /openbmc/linux/drivers/gpu/drm/xlnx/ |
| H A D | zynqmp_disp.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright (C) 2017 - 2020 Xilinx, Inc.
8 * - Hyun Woo Kwon <hyun.kwon@xilinx.com>
9 * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
36 * enum zynqmp_dpsub_layer_id - Layer identifier
46 * enum zynqmp_dpsub_layer_mode - Layer mode
47 * @ZYNQMP_DPSUB_LAYER_NONLIVE: non-live (memory) mode
48 * @ZYNQMP_DPSUB_LAYER_LIVE: live (stream) mode
|
| /openbmc/linux/Documentation/livepatch/ |
| H A D | reliable-stacktrace.rst | 15 functions may have live state and therefore may not be safe to patch. One way
16 to identify which functions are live is to use a stacktrace.
19 functions with live state, and best-effort approaches which can be helpful for
21 to provide a *reliable* stacktrace which ensures it never omits any live
38 * The return code is non-zero to indicate that the trace is not reliable.
47 function should attempt to detect such cases and return a non-zero error
52 3. Compile-time analysis
76 --------------------------------------
99 -------------------------------
133 ----------------------------------------------
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| /openbmc/qemu/docs/interop/ |
| H A D | live-block-operations.rst | 5 later. See the COPYING file in the top-level directory.
10 Live Block Device Operations
14 live block device jobs -- stream, commit, mirror, and backup. These can
16 namely: live copy data from backing files into overlays; shorten long
17 disk image chains by merging data from overlays into backing files; live
19 to another target image; and point-in-time (and incremental) backups of
21 primitives, and some (non-exhaustive list of) examples to illustrate
25 The file ``qapi/block-core.json`` in the QEMU source tree has the
35 ---------------------------------
37 A simple disk image chain. (This can be created live using QMP
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| /openbmc/linux/include/uapi/linux/ |
| H A D | batadv_packet.h | 1 /* SPDX-License-Identifier: (GPL-2.0 WITH Linux-syscall-note) */
15 * batadv_tp_is_error() - Check throughput meter return code for error
23 * enum batadv_packettype - types for batman-adv encapsulated packets
40 /* 0x00 - 0x3f: local packets or special rules for handling */
47 /* 0x40 - 0x7f: unicast */
55 /* 0x80 - 0xff: reserved */
59 * enum batadv_subtype - packet subtype for unicast4addr
76 * enum batadv_iv_flags - flags used in B.A.T.M.A.N. IV OGM packets
90 * enum batadv_icmp_packettype - ICMP message types
108 * enum batadv_mcast_flags - flags for multicast capabilities and settings
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| /openbmc/linux/Documentation/arch/arm64/ |
| H A D | sve.rst | 23 -----------
26 tracked per-thread.
34 instructions and registers, and the Linux-specific system interfaces
61 cpu-feature-registers.txt for details.
79 an endianness-invariant layout, with bits [(8 * i + 7) : (8 * i)] encoded at
84 Beware that on big-endian systems this results in a different byte order than
85 for the FPSIMD V-registers, which are stored as single host-endian 128-bit
86 values, with bits [(127 - 8 * i) : (120 - 8 * i)] of the register encoded at
91 -----------------------------
98 * Vector length (VL) = size of a Z-register in bytes
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| /openbmc/linux/arch/xtensa/kernel/ |
| H A D | coprocessor.S | 4 * Xtensa processor configuration-specific table of coprocessor and
11 * Copyright (C) 2003 - 2007 Tensilica Inc.
16 #include <asm/asm-offsets.h>
25 * - a task may have live coprocessors only on one CPU.
27 * - whether coprocessor context of task T is live on some CPU is
28 * denoted by T's thread_info->cpenable.
30 * - non-zero thread_info->cpenable means that thread_info->cp_owner_cpu
31 * is valid in the T's thread_info. Zero thread_info->cpenable means that
34 * - if a coprocessor context of task T is live on CPU X, only CPU X changes
35 * T's thread_info->cpenable, cp_owner_cpu and coprocessor save area.
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| /openbmc/linux/drivers/misc/lkdtm/ |
| H A D | rodata.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * This includes functions that are meant to live entirely in .rodata
4 * (via objcopy tricks), to validate the non-executability of .rodata.
|
| /openbmc/docs/ |
| H A D | anti-patterns.md | 1 # OpenBMC Anti-patterns
3 From [Wikipedia](https://en.wikipedia.org/wiki/Anti-pattern):
5 "An anti-pattern is a common response to a recurring problem that is usually
12 This page aims to document some of the anti-patterns that exist in OpenBMC to
13 ease the job of those reviewing code. If an anti-pattern is spotted, rather that
17 <!-- begin copy/paste on next line -->
19 ## Anti-pattern template [one line description]
23 (1 paragraph) Describe how to spot the anti-pattern.
27 (1 paragraph) Describe the negative effects of the anti-pattern.
31 (1 paragraph) Describe why the anti-pattern exists. If you don't know, try
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| /openbmc/openbmc/poky/meta/recipes-kernel/lttng/lttng-tools/ |
| H A D | 0001-tests-add-check_skip_kernel_test-to-check-root-user-.patch | 3 Date: Mon, 12 Feb 2024 09:23:54 -0500
6 MIME-Version: 1.0
7 Content-Type: text/plain; charset=UTF-8
8 Content-Transfer-Encoding: 8bit
28 Upstream-Status: Backport from
29 [https://git.lttng.org/?p=lttng-tools.git;a=commit;h=3a1744008331a0604479d3d7461f77056fad3a64]
31 Change-Id: I49a1f642a9869c21a69e0186c296fd917bd7b525
32 Signed-off-by: Xiangyu Chen <xiangyu.chen@windriver.com>
33 Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
34 Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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| /openbmc/qemu/net/ |
| H A D | vhost-vdpa.c | 2 * vhost-vdpa.c
4 * Copyright(c) 2017-2018 Intel Corporation.
8 * See the COPYING file in the top-level directory.
14 #include "hw/virtio/virtio-net.h"
16 #include "net/vhost-vdpa.h"
17 #include "hw/virtio/vhost-vdpa.h"
18 #include "qemu/config-file.h"
19 #include "qemu/error-report.h"
27 #include "standard-headers/linux/virtio_net.h"
138 assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_VDPA); in vhost_vdpa_get_vhost_net()
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| /openbmc/linux/drivers/of/ |
| H A D | overlay.c | 1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (C) 2012 Pantelis Antoniou <panto@antoniou-consulting.com>
27 * struct target - info about current target node as recursing through overlay
29 * @in_livetree: @np is a node in the live devicetree
33 * in the live devicetree where the overlay subtree is targeted to be grafted
35 * also recurses to the next level of the live devicetree, as long as overlay
36 * subtree node also exists in the live devicetree. When a node in the overlay
37 * subtree does not exist at the same level in the live devicetree, target->np
47 * struct fragment - info about fragment nodes in overlay expanded device tree
67 * @cset: changeset to apply fragments to live device tree
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| /openbmc/openbmc/poky/meta/recipes-extended/tcp-wrappers/tcp-wrappers-7.6/ |
| H A D | 01_man_portability.patch | 1 Upstream-Status: Inactive-Upstream [current release is from 1997; no vcs anywhere]
3 diff -ruNp tcp_wrappers_7.6.orig/hosts_access.3 tcp_wrappers_7.6/hosts_access.3
4 --- tcp_wrappers_7.6.orig/hosts_access.3 2005-03-09 18:30:25.000000000 +0100
5 +++ tcp_wrappers_7.6/hosts_access.3 2005-03-09 18:27:03.000000000 +0100
6 @@ -3,7 +3,7 @@
7 hosts_access, hosts_ctl, request_init, request_set \- access control library
10 -#include "tcpd.h"
15 diff -ruNp tcp_wrappers_7.6.orig/hosts_access.5 tcp_wrappers_7.6/hosts_access.5
16 --- tcp_wrappers_7.6.orig/hosts_access.5 2005-03-09 18:30:25.000000000 +0100
17 +++ tcp_wrappers_7.6/hosts_access.5 2005-03-09 18:30:18.000000000 +0100
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| /openbmc/linux/sound/pci/emu10k1/ |
| H A D | emu10k1_main.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * James Courtier-Dutton <James@superbug.co.uk>
85 if (emu->audigy) { in snd_emu10k1_voice_init()
128 { 0x0e, 0xcf }, /* Attenuation Left 0x01 = -103dB, 0xff = 24dB */
146 HCFG_MUTEBUTTONENABLE, emu->port + HCFG); in snd_emu10k1_init()
148 outl(0, emu->port + INTE); in snd_emu10k1_init()
169 if (emu->audigy) { in snd_emu10k1_init()
182 SPCS0, emu->spdif_bits[0], in snd_emu10k1_init()
183 SPCS1, emu->spdif_bits[1], in snd_emu10k1_init()
184 SPCS2, emu->spdif_bits[2], in snd_emu10k1_init()
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| /openbmc/qemu/docs/system/ |
| H A D | cpu-models-x86.rst.inc | 7 enabling live migration between hosts with heterogeneous CPU models.
17 if they cannot be supported with virtualization. Live migration is
20 recommended CPU to use, provided live migration is not required.
27 isolation from the host CPU, allowing greater flexibility in live
39 benefit of passthrough, while making live migration safe.
51 lists the long term stable CPU model versions (eg Haswell-v4).
56 .. _ABI compatibility levels: https://gitlab.com/x86-psABIs/x86-64-ABI/
58 .. csv-table:: x86-64 ABI compatibility levels
59 :file: cpu-models-x86-abi.csv
61 :header-rows: 1
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| /openbmc/u-boot/include/dm/ |
| H A D | ofnode.h | 1 /* SPDX-License-Identifier: GPL-2.0+ */
20 * ofnode - reference to a device tree node
23 * in the live device tree, or an offset within the flat device tree. In the
26 * Thus we can reference nodes in both the live tree (once available) and the
32 * NULL, or an offset of -1.
35 * pointer: when the live tree is active it holds a node pointer, otherwise it
46 * @np: Pointer to device node, used for live tree
51 const struct device_node *np; /* will be used for future live tree */
62 * _ofnode_to_np() - convert an ofnode to a live DT node pointer
79 * ofnode_to_offset() - convert an ofnode to a flat DT offset
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| /openbmc/linux/tools/testing/selftests/powerpc/tm/ |
| H A D | tm-signal-context-chk-gpr.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
16 * speculative nature of the 'live' registers and may infer the wrong
32 #define NV_GPR_REGS 18 /* Number of non-volatile GPR registers */
33 #define R14 14 /* First non-volatile register to check in r14-r31 subset */
39 /* Test only non-volatile general purpose registers, i.e. r14-r31 */
41 /* First context will be set with these values, i.e. non-speculative */
46 -1,-2,-3,-4,-5,-6,-7,-8,-9,-10,-11,-12,-13,-14,-15,-16,-17,-18
53 ucontext_t *tm_ucp = ucp->uc_link; in signal_usr1()
57 fail = (ucp->uc_mcontext.gp_regs[R14 + i] != gprs[i]); in signal_usr1()
61 R14 + i, ucp->uc_mcontext.gp_regs[R14 + i], gprs[i]); in signal_usr1()
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