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Vasily Gorbik 43f9177be4 s390/mm: Allow large pages for KASAN shadow mapping 
[ Upstream commit ff123eb774 ]

Commit c98d2ecae0 ("s390/mm: Uncouple physical vs virtual address
spaces") introduced a large_allowed() helper that restricts which mapping
modes can use large pages. This change unintentionally prevented KASAN
shadow mappings from using large pages, despite there being no reason
to avoid them. In fact, large pages are preferred for performance.

Add POPULATE_KASAN_MAP_SHADOW to the allowed list in large_allowed()
to restore large page mappings for KASAN shadows.

While large_allowed() isn't strictly necessary with current mapping
modes since disallowed modes either don't map anything or fail alignment
and size checks, keep it for clarity.

Fixes: c98d2ecae0 ("s390/mm: Uncouple physical vs virtual address spaces")
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-02-08 09:58:04 +01:00
arch s390/mm: Allow large pages for KASAN shadow mapping 2025-02-08 09:58:04 +01:00
block partitions: ldm: remove the initial kernel-doc notation 2025-02-08 09:56:52 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: api - Fix boot-up self-test race 2025-02-08 09:57:28 +01:00
Documentation crypto: iaa - Fix IAA disabling that occurs when sync_mode is set to 'async' 2025-02-08 09:57:30 +01:00
drivers iavf: allow changing VLAN state without calling PF 2025-02-08 09:58:04 +01:00
fs ubifs: skip dumping tnc tree when zroot is null 2025-02-08 09:58:01 +01:00
include xfrm: delete intermediate secpath entry in packet offload mode 2025-02-08 09:58:01 +01:00
init Compiler Attributes: disable __counted_by for clang < 19.1.3 2024-12-05 14:02:45 +01:00
io_uring io_uring/rsrc: require cloned buffers to share accounting contexts 2025-02-01 18:39:40 +01:00
ipc ipc: fix memleak if msg_init_ns failed in create_ipc_ns 2024-12-05 14:03:02 +01:00
kernel PM: hibernate: Add error handling for syscore_suspend() 2025-02-08 09:58:03 +01:00
lib rhashtable: Fix rhashtable_try_insert test 2025-02-08 09:57:35 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm cachestat: fix page cache statistics permission checking 2025-02-01 18:39:38 +01:00
net xfrm: Don't disable preemption while looking up cache state. 2025-02-08 09:58:03 +01:00
rust rust: kbuild: set bindgen's Rust target version 2024-12-19 18:13:22 +01:00
samples samples/landlock: Fix possible NULL dereference in parse_path() 2025-02-08 09:57:11 +01:00
scripts scripts/sorttable: fix orc_sort_cmp() to maintain symmetry and transitivity 2025-01-09 13:33:50 +01:00
security landlock: Handle weird files 2025-02-08 09:57:16 +01:00
sound ALSA: hda/realtek - Fixed headphone distorted sound on Acer Aspire A115-31 laptop 2025-02-08 09:57:34 +01:00
tools perf trace: Fix BPF loading failure (-E2BIG) 2025-02-08 09:58:03 +01:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt KVM: x86: switch hugepage recovery thread to vhost_task 2024-12-05 14:02:43 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove self from DSA entry 2024-11-03 12:52:38 -08:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: update location of media main tree 2024-12-05 14:02:42 +01:00
Makefile Linux 6.12.12 2025-02-01 18:39:40 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.