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Peter Collingbourne c911f0d468 KVM: arm64: permit all VM_MTE_ALLOWED mappings with MTE enabled
Certain VMMs such as crosvm have features (e.g. sandboxing) that depend
on being able to map guest memory as MAP_SHARED. The current restriction
on sharing MAP_SHARED pages with the guest is preventing the use of
those features with MTE. Now that the races between tasks concurrently
clearing tags on the same page have been fixed, remove this restriction.

Note that this is a relaxation of the ABI.

Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221104011041.290951-8-pcc@google.com
2022-11-29 09:26:07 +00:00
arch KVM: arm64: permit all VM_MTE_ALLOWED mappings with MTE enabled 2022-11-29 09:26:07 +00:00
block block-6.1-2022-10-28 2022-10-29 18:06:52 -07:00
certs
crypto treewide: use get_random_bytes() when possible 2022-10-11 17:42:58 -06:00
Documentation 23 hotfixes. 2022-10-29 17:49:33 -07:00
drivers fbdev fixes for kernel 6.1-rc3: 2022-10-30 11:31:14 -07:00
fs mm: Add PG_arch_3 page flag 2022-11-29 09:26:07 +00:00
include mm: Add PG_arch_3 page flag 2022-11-29 09:26:07 +00:00
init init: Kconfig: fix spelling mistake "satify" -> "satisfy" 2022-10-20 21:27:22 -07:00
io_uring io_uring: unlock if __io_run_local_work locked inside 2022-10-27 09:52:12 -06:00
ipc ipc/msg.c: fix percpu_counter use after free 2022-10-28 13:37:22 -07:00
kernel - Rename a perf memory level event define to denote it is of CXL type 2022-10-30 09:49:18 -07:00
lib 23 hotfixes. 2022-10-29 17:49:33 -07:00
LICENSES
mm mm: Add PG_arch_3 page flag 2022-11-29 09:26:07 +00:00
net kcm: do not sense pfmemalloc status in kcm_sendpage() 2022-10-27 11:25:13 -07:00
rust
samples VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
scripts Kbuild fixes for v6.1 2022-10-16 11:12:22 -07:00
security selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context() 2022-10-19 09:55:53 -04:00
sound ALSA: aoa: Fix I2S device accounting 2022-10-27 08:53:08 +02:00
tools Char/Misc fixes for 6.1-rc3 2022-10-30 11:22:33 -07:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt kvm: Add support for arch compat vm ioctls 2022-10-22 05:15:23 -04:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap mailmap: update email for Qais Yousef 2022-10-20 21:27:21 -07:00
.rustfmt.toml
COPYING
CREDITS
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig
MAINTAINERS USB fixes for 6.1-rc3 2022-10-30 10:35:07 -07:00
Makefile Linux 6.1-rc3 2022-10-30 15:19:28 -07:00
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.