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Juergen Gross 251e90e7e3 xen: don't require virtio with grants for non-PV guests Commit `fa1f57421e` ("xen/virtio: Enable restricted memory access using Xen grant mappings") introduced a new requirement for using virtio devices: the backend now needs to support the VIRTIO_F_ACCESS_PLATFORM feature. This is an undue requirement for non-PV guests, as those can be operated with existing backends without any problem, as long as those backends are running in dom0. Per default allow virtio devices without grant support for non-PV guests. On Arm require VIRTIO_F_ACCESS_PLATFORM for devices having been listed in the device tree to use grants. Add a new config item to always force use of grants for virtio. Fixes: `fa1f57421e` ("xen/virtio: Enable restricted memory access using Xen grant mappings") Reported-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 guest using Xen Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Link: https://lore.kernel.org/r/20220622063838.8854-4-jgross@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>		2022-08-01 07:43:03 +02:00
arch	xen: don't require virtio with grants for non-PV guests	2022-08-01 07:43:03 +02:00
block
certs
crypto
Documentation	- Update the mitigations= kernel param documentation	2022-07-31 09:26:53 -07:00
drivers	xen: don't require virtio with grants for non-PV guests	2022-08-01 07:43:03 +02:00
fs	Thirteen hotfixes, Eight are cc:stable and the remainder are for post-5.18	2022-07-26 19:38:46 -07:00
include	xen: don't require virtio with grants for non-PV guests	2022-08-01 07:43:03 +02:00
init
ipc
kernel	kernel: remove platform_has() infrastructure	2022-08-01 07:42:56 +02:00
lib
LICENSES
mm	Two hotfixes, both cc:stable.	2022-07-29 21:02:35 -07:00
net	net: ping6: Fix memleak in ipv6_renew_options().	2022-07-28 10:42:08 -07:00
samples
scripts
security
sound
tools	perf tools fixes for v5.19: 5th batch	2022-07-29 11:26:28 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap	ARM: SoC fixes for 5.19, part 4	2022-07-27 09:43:07 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS	kernel: remove platform_has() infrastructure	2022-08-01 07:42:56 +02:00
Makefile	Linux 5.19	2022-07-31 14:03:01 -07:00
README

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.