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Yishai Hadas c3fc3e098b virtio-pci: Introduce APIs to execute legacy IO admin commands
Introduce APIs to execute legacy IO admin commands.

It includes: io_legacy_read/write for both common and the device
configuration, io_legacy_notify_info.

In addition, exposing an API to check whether the legacy IO commands are
supported. (i.e. virtio_pci_admin_has_legacy_io()).

Those APIs will be used by the next patches from this series.

Note:
Unlike modern drivers which support hardware virtio devices, legacy
drivers assume software-based devices: e.g. they don't use proper memory
barriers on ARM, use big endian on PPC, etc. X86 drivers are mostly ok
though, more or less by chance. For now, only support legacy IO on X86.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/20231219093247.170936-7-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-12-19 11:51:33 -07:00
arch powerpc fixes for 6.7 #3 2023-12-03 08:43:35 +09:00
block block-6.7-2023-12-01 2023-12-02 06:39:30 +09:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto This push fixes a regression in ahash and hides the Kconfig sub-options for the jitter RNG. 2023-11-09 17:04:58 -08:00
Documentation - Core Frameworks 2023-12-01 08:00:02 +09:00
drivers virtio-pci: Introduce APIs to execute legacy IO admin commands 2023-12-19 11:51:33 -07:00
fs five cifs/smb3 fixes 2023-12-03 09:08:26 +09:00
include virtio-pci: Introduce APIs to execute legacy IO admin commands 2023-12-19 11:51:33 -07:00
init As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
io_uring io_uring: use fget/fput consistently 2023-11-28 11:56:29 -07:00
ipc Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
kernel Probes fixes for v6.7-r3: 2023-12-03 08:02:49 +09:00
lib Probes fixes for v6.7-r3: 2023-12-03 08:02:49 +09:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm vfs-6.7-rc3.fixes 2023-11-24 09:45:40 -08:00
net wireless fixes: 2023-11-29 19:43:34 -08:00
rust Kbuild updates for v6.7 2023-11-04 08:07:19 -10:00
samples Landlock updates for v6.7-rc1 2023-11-03 09:28:53 -10:00
scripts hardening fixes for v6.7-rc4 2023-12-01 14:17:54 +09:00
security + Features 2023-11-03 09:48:17 -10:00
sound ALSA: hda: Disable power-save on KONTRON SinglePC 2023-11-30 16:14:21 +01:00
tools perf tools fixes for v6.7: 1st batch 2023-12-01 10:17:16 +09:00
usr arch: Remove Itanium (IA-64) architecture 2023-09-11 08:13:17 +00:00
virt ARM: 2023-09-07 13:52:20 -07:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/ 2023-10-03 20:49:09 +09:00
.mailmap As usual, lots of singleton and doubleton patches all over the tree and 2023-11-02 20:53:31 -10:00
.rustfmt.toml
COPYING
CREDITS USB: Remove Wireless USB and UWB documentation 2023-08-09 14:17:32 +02:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig
MAINTAINERS IOMMU Fixes for Linux v6.7-rc3 2023-12-02 08:42:39 +09:00
Makefile Linux 6.7-rc4 2023-12-03 18:52:56 +09:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.