Yu-cheng Yu 54007f8182 mm: Introduce VM_SHADOW_STACK for shadow stack memory ... New hardware extensions implement support for shadow stack memory, such as x86 Control-flow Enforcement Technology (CET). Add a new VM flag to identify these areas, for example, to be used to properly indicate shadow stack PTEs to the hardware. Shadow stack VMA creation will be tightly controlled and limited to anonymous memory to make the implementation simpler and since that is all that is required. The solution will rely on pte_mkwrite() to create the shadow stack PTEs, so it will not be required for vm_get_page_prot() to learn how to create shadow stack memory. For this reason document that VM_SHADOW_STACK should not be mixed with VM_SHARED. Co-developed-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Mark Brown <broonie@kernel.org> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Pengfei Xu <pengfei.xu@intel.com> Tested-by: John Allen <john.allen@amd.com> Tested-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/all/20230613001108.3040476-15-rick.p.edgecombe%40intel.com		2023-07-11 14:12:19 -07:00
..
caching	Remove duplicate words inside documentation	2022-09-27 13:21:43 -06:00
ext4	ext4: update doc about journal superblock description	2023-06-26 19:35:13 -04:00
nfs	exportfs: add explicit flag to request non-decodeable file handles	2023-05-22 18:08:37 +02:00
smb	smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb	2023-05-24 16:29:21 -05:00
spufs	Documentation: spufs: correct a duplicate word typo	2022-09-27 13:21:44 -06:00
9p.rst	fs/9p: Rework cache modes and add new options to Documentation	2023-04-09 21:41:21 +00:00
adfs.rst	docs: filesystems: convert adfs.txt to ReST	2020-03-02 13:58:44 -07:00
affs.rst	affs: fix basic permission bits to actually work	2020-08-31 12:20:31 +02:00
afs.rst	AFS: Documentation: fix a few typos in afs.rst	2021-01-21 14:06:00 -07:00
api-summary.rst	block: move fs/block_dev.c to block/bdev.c	2021-09-07 08:39:40 -06:00
autofs-mount-control.rst	autofs: use flexible array in ioctl structure	2023-05-30 16:42:00 -07:00
autofs.rst	autofs: use flexible array in ioctl structure	2023-05-30 16:42:00 -07:00
automount-support.rst	docs: filesystems: convert automount-support.txt to ReST	2020-05-05 09:22:21 -06:00
befs.rst	docs: filesystems: convert befs.txt to ReST	2020-03-02 14:01:25 -07:00
bfs.rst	docs: filesystems: convert bfs.txt to ReST	2020-03-02 14:01:26 -07:00
btrfs.rst	Documentation: update btrfs list of features and link to readthedocs.io	2022-06-21 14:47:19 +02:00
ceph.rst	ceph: remove Sage's git tree from documentation	2022-10-04 19:18:08 +02:00
coda.rst	Documentation: coda: annotate duplicated words	2020-07-13 10:02:32 -06:00
configfs.rst	configfs: remove mentions of committable items	2022-12-02 11:11:27 +01:00
cramfs.rst	docs: filesystems: convert cramfs.txt to ReST	2020-03-02 14:02:07 -07:00
dax.rst	Documentation/filesystem/dax: update DAX description on erofs	2022-03-16 09:38:38 +08:00
debugfs.rst	debugfs: small Documentation cleaning	2022-11-09 13:58:55 -07:00
devpts.rst	docs: filesystems: convert devpts.txt to ReST	2020-05-05 09:22:21 -06:00
directory-locking.rst	fs: Lock moved directories	2023-06-02 15:00:18 +02:00
dlmfs.rst	docs: update ocfs2-devel mailing list address	2023-07-08 09:29:29 -07:00
dnotify.rst	docs: filesystems: convert dnotify.txt to ReST	2020-05-05 09:22:22 -06:00
ecryptfs.rst	docs: prevent warnings due to autosectionlabel	2020-03-20 17:01:29 -06:00
efivarfs.rst	docs: filesystems: add info about efivars content	2020-05-25 18:59:59 -06:00
erofs.rst	erofs: set block size to the on-disk block size	2023-04-17 01:15:45 +08:00
ext2.rst	ext2: remove nobh support	2022-08-02 12:34:04 -04:00
ext3.rst	docs: filesystems: convert ext3.txt to ReST	2020-03-02 14:03:16 -07:00
f2fs.rst	f2fs: support errors=remount-ro|continue|panic mountoption	2023-05-08 11:18:04 -07:00
fiemap.rst	A lot of bug fixes and cleanups for ext4, including:	2020-06-05 16:19:28 -07:00
files.rst	file: Rename fcheck lookup_fd_rcu	2020-12-10 12:40:07 -06:00
fscrypt.rst	fscrypt: support decrypting data from large folios	2023-01-28 15:10:12 -08:00
fsverity.rst	fsverity: improve documentation for builtin signature support	2023-06-20 22:47:55 -07:00
fuse-io.rst	docs: filesystems: convert fuse-io.txt to ReST	2020-05-05 09:22:22 -06:00
fuse.rst	fuse: Add module param for CAP_SYS_ADMIN access bypassing allow_other	2022-07-21 16:06:19 +02:00
gfs2-glocks.rst	docs: filesystems: convert gfs2-glocks.txt to ReST	2020-06-02 19:45:05 +02:00
gfs2-uevents.rst	docs: filesystems: convert gfs2-uevents.txt to ReST	2020-03-02 14:03:35 -07:00
gfs2.rst	Documentation: Update filesystems/gfs2.rst	2020-12-01 00:25:20 +01:00
hfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
hfsplus.rst	docs: filesystems: convert hfsplus.txt to ReST	2020-03-02 14:03:47 -07:00
hpfs.rst	Replace HTTP links with HTTPS ones: Documentation/filesystems	2020-06-26 11:14:12 -06:00
idmappings.rst	Documentation: update idmappings.rst	2023-03-14 14:16:57 +01:00
index.rst	smb3: move Documentation/filesystems/cifs to Documentation/filesystems/smb	2023-05-24 16:29:21 -05:00
inotify.rst	docs: filesystems: convert inotify.txt to ReST	2020-03-02 14:03:55 -07:00
isofs.rst	docs: filesystems: convert isofs.txt to ReST	2020-03-02 14:04:06 -07:00
journalling.rst	jbd2: drop jbd2_fc_init documentation	2020-11-06 23:01:03 -05:00
locking.rst	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
locks.rst	docs: fs: locks.rst: update comment about mandatory file locking	2021-10-19 06:48:21 -04:00
mount_api.rst	fs_context: drop the unused lsm_flags member	2023-03-16 14:38:28 +01:00
netfs_library.rst	netfs: do not unlock and put the folio twice	2022-07-14 10:10:12 +02:00
nilfs2.rst	docs: filesystems: convert nilfs2.txt to ReST	2020-03-02 14:04:06 -07:00
ntfs3.rst	fs/ntfs3: Remove noacsrules	2023-03-27 16:59:17 +04:00
ntfs.rst	docs: filesystems: convert ntfs.txt to ReST	2020-03-02 14:04:06 -07:00
ocfs2-online-filecheck.rst	docs: filesystems: convert ocfs2-online-filecheck.txt to ReST	2020-03-02 14:04:06 -07:00
ocfs2.rst	docs: update ocfs2-devel mailing list address	2023-07-08 09:29:29 -07:00
omfs.rst	Replace HTTP links with HTTPS ones: OMFS	2020-07-13 11:24:43 -06:00
orangefs.rst	docs: orangefs: fix pvfs2tab literal block	2020-04-28 12:35:47 -06:00
overlayfs.rst	ovl: store enum redirect_mode in config instead of a string	2023-06-19 14:02:01 +03:00
path-lookup.rst	Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:41:14 -07:00
path-lookup.txt	Replace HTTP links with HTTPS ones: documentation	2020-06-08 09:30:19 -06:00
porting.rst	fs: rename current get acl method	2022-10-20 10:13:27 +02:00
proc.rst	mm: Introduce VM_SHADOW_STACK for shadow stack memory	2023-07-11 14:12:19 -07:00
qnx6.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
quota.rst	quota: Fixup http links in quota doc	2020-07-09 08:14:01 +02:00
ramfs-rootfs-initramfs.rst	Documentation/filesystems: ramfs-rootfs-initramfs: use :Author:	2023-05-16 12:55:35 -06:00
relay.rst	docs: filesystems: convert relay.txt to ReST	2020-03-02 14:04:41 -07:00
romfs.rst	docs: filesystems: convert romfs.txt to ReST	2020-03-02 14:04:41 -07:00
seq_file.rst	seq_file: document how per-entry resources are managed.	2021-02-26 09:41:05 -08:00
sharedsubtree.rst	Documentation/filesystems: sharedsubtree: add section headings	2023-05-16 12:50:05 -06:00
splice.rst	docs: Bring some order to filesystem documentation	2019-03-06 09:46:10 -07:00
squashfs.rst	docs: filesystems: convert squashfs.txt to ReST	2020-03-02 14:04:41 -07:00
sysfs.rst	driver core: bus: mark the struct bus_type for sysfs callbacks as constant	2023-03-23 13:20:40 +01:00
sysv-fs.rst	docs: filesystems: convert sysv-fs.txt to ReST	2020-03-02 14:04:41 -07:00
tmpfs.rst	shmem: add support to ignore swap	2023-03-28 16:20:15 -07:00
ubifs-authentication.rst	docs: ubifs-authentication: Add a top-level heading	2020-09-09 11:53:33 -06:00
ubifs.rst	Documentation: ubifs: Fix compression idiom	2022-10-10 13:01:10 -06:00
udf.rst	udf: Replace HTTP links with HTTPS ones	2020-07-14 14:37:39 +02:00
vfat.rst	docs: filesystems: Fix a mundane typo	2021-03-25 11:51:23 -06:00
vfs.rst	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
virtiofs.rst	virtiofs: Add mount option and atime behavior to the doc	2020-04-20 17:01:34 +02:00
xfs-delayed-logging-design.rst	Documentation: filesystems: correct possessive "its"	2022-09-27 13:21:44 -06:00
xfs-online-fsck-design.rst	xfs: document future directions of online fsck	2023-04-11 18:59:52 -07:00
xfs-self-describing-metadata.rst	xfs: document the filesystem metadata checking strategy	2023-04-11 18:59:47 -07:00
zonefs.rst	documentation: zonefs: Document sysfs attributes	2022-04-26 14:53:06 +09:00