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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore:
- Promote IMA/EVM to a proper LSM
This is the bulk of the diffstat, and the source of all the changes
in the VFS code. Prior to the start of the LSM stacking work it was
important that IMA/EVM were separate from the rest of the LSMs,
complete with their own hooks, infrastructure, etc. as it was the
only way to enable IMA/EVM at the same time as a LSM.
However, now that the bulk of the LSM infrastructure supports
multiple simultaneous LSMs, we can simplify things greatly by
bringing IMA/EVM into the LSM infrastructure as proper LSMs. This is
something I've wanted to see happen for quite some time and Roberto
was kind enough to put in the work to make it happen.
- Use the LSM hook default values to simplify the call_int_hook() macro
Previously the call_int_hook() macro required callers to supply a
default return value, despite a default value being specified when
the LSM hook was defined.
This simplifies the macro by using the defined default return value
which makes life easier for callers and should also reduce the number
of return value bugs in the future (we've had a few pop up recently,
hence this work).
- Use the KMEM_CACHE() macro instead of kmem_cache_create()
The guidance appears to be to use the KMEM_CACHE() macro when
possible and there is no reason why we can't use the macro, so let's
use it.
- Fix a number of comment typos in the LSM hook comment blocks
Not much to say here, we fixed some questionable grammar decisions in
the LSM hook comment blocks.
* tag 'lsm-pr-20240312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: (28 commits)
cred: Use KMEM_CACHE() instead of kmem_cache_create()
lsm: use default hook return value in call_int_hook()
lsm: fix typos in security/security.c comment headers
integrity: Remove LSM
ima: Make it independent from 'integrity' LSM
evm: Make it independent from 'integrity' LSM
evm: Move to LSM infrastructure
ima: Move IMA-Appraisal to LSM infrastructure
ima: Move to LSM infrastructure
integrity: Move integrity_kernel_module_request() to IMA
security: Introduce key_post_create_or_update hook
security: Introduce inode_post_remove_acl hook
security: Introduce inode_post_set_acl hook
security: Introduce inode_post_create_tmpfile hook
security: Introduce path_post_mknod hook
security: Introduce file_release hook
security: Introduce file_post_open hook
security: Introduce inode_post_removexattr hook
security: Introduce inode_post_setattr hook
security: Align inode_setattr hook definition with EVM
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
"Really only a few notable changes:
- Continue the coding style/formatting fixup work
This is the bulk of the diffstat in this pull request, with the
focus this time around being the security/selinux/ss directory.
We've only got a couple of files left to cleanup and once we're
done with that we can start enabling some automatic style
verfication and introduce tooling to help new folks format their
code correctly.
- Don't restrict xattr copy-up when SELinux policy is not loaded
This helps systems that use overlayfs, or similar filesystems,
preserve their SELinux labels during early boot when the SELinux
policy has yet to be loaded.
- Reduce the work we do during inode initialization time
This isn't likely to show up in any benchmark results, but we
removed an unnecessary SELinux object class lookup/calculation
during inode initialization.
- Correct the return values in selinux_socket_getpeersec_dgram()
We had some inconsistencies with respect to our return values
across selinux_socket_getpeersec_dgram() and
selinux_socket_getpeersec_stream().
This provides a more uniform set of error codes across the two
functions and should help make it easier for users to identify
the source of a failure"
* tag 'selinux-pr-20240312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: (24 commits)
selinux: fix style issues in security/selinux/ss/symtab.c
selinux: fix style issues in security/selinux/ss/symtab.h
selinux: fix style issues in security/selinux/ss/sidtab.c
selinux: fix style issues in security/selinux/ss/sidtab.h
selinux: fix style issues in security/selinux/ss/services.h
selinux: fix style issues in security/selinux/ss/policydb.c
selinux: fix style issues in security/selinux/ss/policydb.h
selinux: fix style issues in security/selinux/ss/mls_types.h
selinux: fix style issues in security/selinux/ss/mls.c
selinux: fix style issues in security/selinux/ss/mls.h
selinux: fix style issues in security/selinux/ss/hashtab.c
selinux: fix style issues in security/selinux/ss/hashtab.h
selinux: fix style issues in security/selinux/ss/ebitmap.c
selinux: fix style issues in security/selinux/ss/ebitmap.h
selinux: fix style issues in security/selinux/ss/context.h
selinux: fix style issues in security/selinux/ss/context.h
selinux: fix style issues in security/selinux/ss/constraint.h
selinux: fix style issues in security/selinux/ss/conditional.c
selinux: fix style issues in security/selinux/ss/conditional.h
selinux: fix style issues in security/selinux/ss/avtab.c
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This reverts commit 2beb81fbf0c01a62515a1bcef326168494ee2bd0.
While removing CONFIG_CRYPTO_STATS is a worthy goal, this also
removed unrelated infrastructure such as crypto_comp_alg_common.
Signed-off-by: Herbert Xu <[email protected]>
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Since atomic write way was changed to out-place-update, we should
prevent it on pinned files.
Signed-off-by: Daeho Jeong <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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{new,change}_curseg() may return error in some special cases,
error handling should be did in their callers, and this will also
facilitate subsequent error path expansion in {new,change}_curseg().
Signed-off-by: Zhiguo Niu <[email protected]>
Signed-off-by: Chao Yu <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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There are some cases of f2fs_is_valid_blkaddr not handled as
ERROR_INVALID_BLKADDR,so unify the error handling about all of
f2fs_is_valid_blkaddr.
Do f2fs_handle_error in __f2fs_is_valid_blkaddr for cleanup.
Signed-off-by: Zhiguo Niu <[email protected]>
Signed-off-by: Chao Yu <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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Commit 2e2c6e9b72ce ("f2fs: remove power-of-two limitation of zoned
device") missed to remove pow2 check condition in init_blkz_info(),
fix it.
Fixes: 2e2c6e9b72ce ("f2fs: remove power-of-two limitation of zoned device")
Signed-off-by: Feng Song <[email protected]>
Signed-off-by: Yongpeng Yang <[email protected]>
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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Below race case can cause data corruption:
Thread A GC thread
- gc_data_segment
- ra_data_block
- locked meta_inode page
- f2fs_inplace_write_data
- invalidate_mapping_pages
: fail to invalidate meta_inode page
due to lock failure or dirty|writeback
status
- f2fs_submit_page_bio
: write last dirty data to old blkaddr
- move_data_block
- load old data from meta_inode page
- f2fs_submit_page_write
: write old data to new blkaddr
Because invalidate_mapping_pages() will skip invalidating page which
has unclear status including locked, dirty, writeback and so on, so
we need to use truncate_inode_pages_range() instead of
invalidate_mapping_pages() to make sure meta_inode page will be dropped.
Fixes: 6aa58d8ad20a ("f2fs: readahead encrypted block during GC")
Fixes: e3b49ea36802 ("f2fs: invalidate META_MAPPING before IPU/DIO write")
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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When a file only needs one direct_node, performing the following
operations will cause the file to be unrepairable:
unisoc # ./f2fs_io compress test.apk
unisoc #df -h | grep dm-48
/dev/block/dm-48 112G 112G 1.2M 100% /data
unisoc # ./f2fs_io release_cblocks test.apk
924
unisoc # df -h | grep dm-48
/dev/block/dm-48 112G 112G 4.8M 100% /data
unisoc # dd if=/dev/random of=file4 bs=1M count=3
3145728 bytes (3.0 M) copied, 0.025 s, 120 M/s
unisoc # df -h | grep dm-48
/dev/block/dm-48 112G 112G 1.8M 100% /data
unisoc # ./f2fs_io reserve_cblocks test.apk
F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device
adb reboot
unisoc # df -h | grep dm-48
/dev/block/dm-48 112G 112G 11M 100% /data
unisoc # ./f2fs_io reserve_cblocks test.apk
0
This is because the file has only one direct_node. After returning
to -ENOSPC, reserved_blocks += ret will not be executed. As a result,
the reserved_blocks at this time is still 0, which is not the real
number of reserved blocks. Therefore, fsck cannot be set to repair
the file.
After this patch, the fsck flag will be set to fix this problem.
unisoc # df -h | grep dm-48
/dev/block/dm-48 112G 112G 1.8M 100% /data
unisoc # ./f2fs_io reserve_cblocks test.apk
F2FS_IOC_RESERVE_COMPRESS_BLOCKS failed: No space left on device
adb reboot then fsck will be executed
unisoc # df -h | grep dm-48
/dev/block/dm-48 112G 112G 11M 100% /data
unisoc # ./f2fs_io reserve_cblocks test.apk
924
Fixes: c75488fb4d82 ("f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS")
Signed-off-by: Xiuhong Wang <[email protected]>
Signed-off-by: Zhiguo Niu <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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The following f2fs_io test will get a "0" result instead of -EINVAL,
unisoc # ./f2fs_io compress file
unisoc # ./f2fs_io reserve_cblocks file
0
it's not reasonable, so the judgement of
atomic_read(&F2FS_I(inode)->i_compr_blocks) should be placed after
the judgement of is_inode_flag_set(inode, FI_COMPRESS_RELEASED).
Fixes: c75488fb4d82 ("f2fs: introduce F2FS_IOC_RESERVE_COMPRESS_BLOCKS")
Signed-off-by: Xiuhong Wang <[email protected]>
Signed-off-by: Zhiguo Niu <[email protected]>
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps
etc) lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core instead
of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length and
budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global
config variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug of
ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for use
on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code:
- Enforce VM_IOREMAP flag and range in ioremap_page_range and
introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
bpf_arena).
- Rework selftest harness to enable the use of the full range of ksft
exit code (pass, fail, skip, xfail, xpass).
Netfilter:
- Allow userspace to define a table that is exclusively owned by a
daemon (via netlink socket aliveness) without auto-removing this
table when the userspace program exits. Such table gets marked as
orphaned and a restarting management daemon can re-attach/regain
ownership.
- Speed up element insertions to nftables' concatenated-ranges set
type. Compact a few related data structures.
BPF:
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between
BPF program and user space where structures inside the arena can
have pointers to other areas of the arena, and pointers work
seamlessly for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the
verifier and the program. The verifier allows the program to loop
assuming it's behaving well, but reserves the right to terminate
it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops
type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF
firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF
objects.
Wireless:
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API:
- Major overhaul of the Energy Efficient Ethernet internals to
support new link modes (2.5GE, 5GE), share more code between
drivers (especially those using phylib), and encourage more
uniform behavior. Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from
drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc:
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions, and
packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message
encapsulation or "Netlink polymorphism", where interpretation of
nested attributes depends on link type, classifier type or some
other "class type".
Drivers:
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic on CAN
BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO)
support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs
to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro"
* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
nexthop: Fix out-of-bounds access during attribute validation
nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
nexthop: Only parse NHA_OP_FLAGS for get messages that require it
bpf: move sleepable flag from bpf_prog_aux to bpf_prog
bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
selftests/bpf: Add kprobe multi triggering benchmarks
ptp: Move from simple ida to xarray
vxlan: Remove generic .ndo_get_stats64
vxlan: Do not alloc tstats manually
devlink: Add comments to use netlink gen tool
nfp: flower: handle acti_netdevs allocation failure
net/packet: Add getsockopt support for PACKET_COPY_THRESH
net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
selftests/bpf: Add bpf_arena_htab test.
selftests/bpf: Add bpf_arena_list test.
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
bpf: Add helper macro bpf_addr_space_cast()
libbpf: Recognize __arena global variables.
bpftool: Recognize arena map type
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Pull documentation updates from Jonathan Corbet:
"A moderatly busy cycle for development this time around.
- Some cleanup of the main index page for easier navigation
- Rework some of the other top-level pages for better readability
and, with luck, fewer merge conflicts in the future.
- Submit-checklist improvements, hopefully the first of many.
- New Italian translations
- A fair number of kernel-doc fixes and improvements. We have also
dropped the recommendation to use an old version of Sphinx.
- A new document from Thorsten on bisection
... and lots of fixes and updates"
* tag 'docs-6.9' of git://git.lwn.net/linux: (54 commits)
docs: verify/bisect: fixes, finetuning, and support for Arch
docs: Makefile: Add dependency to $(YNL_INDEX) for targets other than htmldocs
docs: Move ja_JP/howto.rst to ja_JP/process/howto.rst
docs: submit-checklist: use subheadings
docs: submit-checklist: structure by category
docs: new text on bisecting which also covers bug validation
docs: drop the version constraints for sphinx and dependencies
docs: kerneldoc-preamble.sty: Remove code for Sphinx <2.4
docs: Restore "smart quotes" for quotes
docs/zh_CN: accurate translation of "function"
docs: Include simplified link titles in main index
docs: Correct formatting of title in admin-guide/index.rst
docs: kernel_feat.py: fix build error for missing files
MAINTAINERS: Set the field name for subsystem profile section
kasan: Add documentation for CONFIG_KASAN_EXTRA_INFO
Fixed case issue with 'fault-injection' in documentation
kernel-doc: handle #if in enums as well
Documentation: update mailing list addresses
doc: kerneldoc.py: fix indentation
scripts/kernel-doc: simplify signature printing
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"Two small audit patches:
- Use the KMEM_CACHE() macro instead of kmem_cache_create()
The guidance appears to be to use the KMEM_CACHE() macro when
possible and there is no reason why we can't use the macro, so
let's use it.
- Remove an unnecessary assignment in audit_dupe_lsm_field()
A return value variable was assigned a value in its declaration,
but the declaration value is overwritten before the return value
variable is ever referenced; drop the assignment at declaration
time"
* tag 'audit-pr-20240312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: use KMEM_CACHE() instead of kmem_cache_create()
audit: remove unnecessary assignment in audit_dupe_lsm_field()
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Pull smack updates from Casey Schaufler:
- Improvements to the initialization of in-memory inodes
- A fix in ramfs to propery ensure the initialization of in-memory
inodes
- Removal of duplicated code in smack_cred_transfer()
* tag 'Smack-for-6.9' of https://github.com/cschaufler/smack-next:
Smack: use init_task_smack() in smack_cred_transfer()
ramfs: Initialize security of in-memory inodes
smack: Initialize the in-memory inode in smack_inode_init_security()
smack: Always determine inode labels in smack_inode_init_security()
smack: Handle SMACK64TRANSMUTE in smack_inode_setsecurity()
smack: Set SMACK64TRANSMUTE only for dirs in smack_inode_setxattr()
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"There are no core kernel changes here; it's entirely selftests and
samples:
- Improve reliability of selftests (Terry Tritton, Kees Cook)
- Fix strict-aliasing warning in samples (Arnd Bergmann)"
* tag 'seccomp-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
samples: user-trap: fix strict-aliasing warning
selftests/seccomp: Pin benchmark to single CPU
selftests/seccomp: user_notification_addfd check nextfd is available
selftests/seccomp: Change the syscall used in KILL_THREAD test
selftests/seccomp: Handle EINVAL on unshare(CLONE_NEWPID)
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For the numa nodes that are not created by SRAT, no memory_target is
allocated and is not managed by the HMAT_REPORTING code. Therefore
hmat_callback() memory hotplug notifier will exit early on those NUMA
nodes. The CXL memory hotplug notifier will need to call
node_set_perf_attrs() directly in order to setup the access sysfs
attributes.
In acpi_numa_init(), the last proximity domain (pxm) id created by SRAT is
stored. Add a helper function acpi_node_backed_by_real_pxm() in order to
check if a NUMA node id is defined by SRAT or created by CFMWS.
node_set_perf_attrs() symbol is exported to allow update of perf attribs
for a node. The sysfs path of
/sys/devices/system/node/nodeX/access0/initiators/* is created by
node_set_perf_attrs() for the various attributes where nodeX is matched
to the NUMA node of the CXL region.
Cc: Rafael J. Wysocki <[email protected]>
Reviewed-by: Alison Schofield <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As is pretty normal for this tree, there are changes all over the
place, especially for small fixes, selftest improvements, and improved
macro usability.
Some header changes ended up landing via this tree as they depended on
the string header cleanups. Also, a notable set of changes is the work
for the reintroduction of the UBSAN signed integer overflow sanitizer
so that we can continue to make improvements on the compiler side to
make this sanitizer a more viable future security hardening option.
Summary:
- string.h and related header cleanups (Tanzir Hasan, Andy
Shevchenko)
- VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev,
Harshit Mogalapalli)
- selftests/powerpc: Fix load_unaligned_zeropad build failure
(Michael Ellerman)
- hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn)
- Handle tail call optimization better in LKDTM (Douglas Anderson)
- Use long form types in overflow.h (Andy Shevchenko)
- Add flags param to string_get_size() (Andy Shevchenko)
- Add Coccinelle script for potential struct_size() use (Jacob
Keller)
- Fix objtool corner case under KCFI (Josh Poimboeuf)
- Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng)
- Add str_plural() helper (Michal Wajdeczko, Kees Cook)
- Ignore relocations in .notes section
- Add comments to explain how __is_constexpr() works
- Fix m68k stack alignment expectations in stackinit Kunit test
- Convert string selftests to KUnit
- Add KUnit tests for fortified string functions
- Improve reporting during fortified string warnings
- Allow non-type arg to type_max() and type_min()
- Allow strscpy() to be called with only 2 arguments
- Add binary mode to leaking_addresses scanner
- Various small cleanups to leaking_addresses scanner
- Adding wrapping_*() arithmetic helper
- Annotate initial signed integer wrap-around in refcount_t
- Add explicit UBSAN section to MAINTAINERS
- Fix UBSAN self-test warnings
- Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL
- Reintroduce UBSAN's signed overflow sanitizer"
* tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (51 commits)
selftests/powerpc: Fix load_unaligned_zeropad build failure
string: Convert helpers selftest to KUnit
string: Convert selftest to KUnit
sh: Fix build with CONFIG_UBSAN=y
compiler.h: Explain how __is_constexpr() works
overflow: Allow non-type arg to type_max() and type_min()
VMCI: Fix possible memcpy() run-time warning in vmci_datagram_invoke_guest_handler()
lib/string_helpers: Add flags param to string_get_size()
x86, relocs: Ignore relocations in .notes section
objtool: Fix UNWIND_HINT_{SAVE,RESTORE} across basic blocks
overflow: Use POD in check_shl_overflow()
lib: stackinit: Adjust target string to 8 bytes for m68k
sparc: vdso: Disable UBSAN instrumentation
kernel.h: Move lib/cmdline.c prototypes to string.h
leaking_addresses: Provide mechanism to scan binary files
leaking_addresses: Ignore input device status lines
leaking_addresses: Use File::Temp for /tmp files
MAINTAINERS: Update LEAKING_ADDRESSES details
fortify: Improve buffer overflow reporting
fortify: Add KUnit tests for runtime overflows
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull execve updates from Kees Cook:
- Drop needless error path code in remove_arg_zero() (Li kunyu, Kees
Cook)
- binfmt_elf_efpic: Don't use missing interpreter's properties (Max
Filippov)
- Use /bin/bash for execveat selftests
* tag 'execve-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
exec: Simplify remove_arg_zero() error path
selftests/exec: Perform script checks with /bin/bash
exec: Delete unnecessary statements in remove_arg_zero()
fs: binfmt_elf_efpic: don't use missing interpreter's properties
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore updates from Kees Cook:
- Make PSTORE_RAM available by default on arm64 (Nícolas F R A Prado)
- Allow for dynamic initialization in modular build (Guilherme G
Piccoli)
- Add missing allocation failure check (Kunwu Chan)
- Avoid duplicate memory zeroing (Christophe JAILLET)
- Avoid potential double-free during pstorefs umount
* tag 'pstore-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore/zone: Don't clear memory twice
pstore/zone: Add a null pointer check to the psz_kmsg_read
efi: pstore: Allow dynamic initialization based on module parameter
arm64: defconfig: Enable PSTORE_RAM
pstore/ram: Register to module device table
pstore: inode: Only d_invalidate() is needed
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Pull nfsd updates from Chuck Lever:
"The bulk of the patches for this release are optimizations, code
clean-ups, and minor bug fixes.
One new feature to mention is that NFSD administrators now have the
ability to revoke NFSv4 open and lock state. NFSD's NFSv3 support has
had this capability for some time.
As always I am grateful to NFSD contributors, reviewers, and testers"
* tag 'nfsd-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (75 commits)
NFSD: Clean up nfsd4_encode_replay()
NFSD: send OP_CB_RECALL_ANY to clients when number of delegations reaches its limit
NFSD: Document nfsd_setattr() fill-attributes behavior
nfsd: Fix NFSv3 atomicity bugs in nfsd_setattr()
nfsd: Fix a regression in nfsd_setattr()
NFSD: OP_CB_RECALL_ANY should recall both read and write delegations
NFSD: handle GETATTR conflict with write delegation
NFSD: add support for CB_GETATTR callback
NFSD: Document the phases of CREATE_SESSION
NFSD: Fix the NFSv4.1 CREATE_SESSION operation
nfsd: clean up comments over nfs4_client definition
svcrdma: Add Write chunk WRs to the RPC's Send WR chain
svcrdma: Post WRs for Write chunks in svc_rdma_sendto()
svcrdma: Post the Reply chunk and Send WR together
svcrdma: Move write_info for Reply chunks into struct svc_rdma_send_ctxt
svcrdma: Post Send WR chain
svcrdma: Fix retry loop in svc_rdma_send()
svcrdma: Prevent a UAF in svc_rdma_send()
svcrdma: Fix SQ wake-ups
svcrdma: Increase the per-transport rw_ctx count
...
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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"In this cycle, we introduce compressed inode support over fscache
since a lot of native EROFS images are explicitly compressed so that
EROFS over fscache can be more widely used even without Dragonfly
Nydus [1].
Apart from that, there are some folio conversions for compressed
inodes available as well as a lockdep false positive fix.
Summary:
- Some folio conversions for compressed inodes;
- Add compressed inode support over fscache;
- Fix lockdep false positives of erofs_pseudo_mnt"
Link: https://nydus.dev [1]
* tag 'erofs-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: support compressed inodes over fscache
erofs: make iov_iter describe target buffers over fscache
erofs: fix lockdep false positives on initializing erofs_pseudo_mnt
erofs: refine managed cache operations to folios
erofs: convert z_erofs_submissionqueue_endio() to folios
erofs: convert z_erofs_fill_bio_vec() to folios
erofs: get rid of `justfound` debugging tag
erofs: convert z_erofs_do_read_page() to folios
erofs: convert z_erofs_onlinepage_.* to folios
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Pull fsverity update from Eric Biggers:
"Slightly improve data verification performance by eliminating an
unnecessary lock"
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
fsverity: remove hash page spin lock
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Pull fscrypt updates from Eric Biggers:
"Fix flakiness in a test by releasing the quota synchronously when a
key is removed, and other minor cleanups"
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
fscrypt: shrink the size of struct fscrypt_inode_info slightly
fscrypt: write CBC-CTS instead of CTS-CBC
fscrypt: clear keyring before calling key_put()
fscrypt: explicitly require that inode->i_blkbits be set
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Returning the edit variable is redundant because it is dereferenced right
before it is returned. It would be better to return true.
Found by Linux Verification Center (linuxtesting.org) with Svace.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Roman Smirnov <[email protected]>
Reviewed-by: Sergey Shtylyov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
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Use kmap_local_page() instead of kmap_atomic() which has been deprecated.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Peng Hao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
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The functions are only used in the file where they are defined. Remove
them from the header and make them static.
Also guard proc_soft_watchdog with a #define-guard as it is not used
otherwise.
Link: https://lkml.kernel.org/r/20240306-const-sysctl-prep-watchdog-v1-1-bd45da3a41cf@weissschuh.net
Signed-off-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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Fixes Coccinelle/coccicheck warnings reported by do_div.cocci.
Compared to do_div(), div64_ul() does not implicitly cast the divisor and
does not unnecessarily calculate the remainder.
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Thorsten Blum <[email protected]>
Signed-off-by: Ryusuke Konishi <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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As indicated in the added comment, the algorithm works better if b is big.
As multiplication is commutative, a and b can be swapped. Do this if a
is bigger than b.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Tested-by: Biju Das <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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Using dev_err_probe() brings several improvements:
- emits the symbolic error code
- properly handles EPROBE_DEFER
- combines error message generation and return value handling
While at it add error messages to two error paths that were silent
before.
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
|
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Now that run_vmtests.sh does not guarantee that the correct hugepage count
is available, skip the hugetlb-madvise test if the requirements are not
met rather than failing.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Nico Pache <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Muhammad Usama Anjum <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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Now that run_vmtests.sh does not guarantee that the correct hugepage count
is available, add a check inside the userfaultfd hugetlb test to verify
the nr_hugepages count before continuing.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Nico Pache <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Muhammad Usama Anjum <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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Patch series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests", v2.
This series addresses issues related to hugepage requirements in the MM
selftests, ensuring tests are skipped rather than failing when the
necessary hugepage count is not met.
This adjustment allows for a more graceful handling for systems with
insufficient hugepages, preventing unnecessary test failures and improving
the overall robustness of the test suite.
This patch (of 3):
On systems that have large core counts and large page sizes, but limited
memory, the userfaultfd test hugepage requirement is too large.
Exiting early due to missing one test's requirements is a rather
aggressive strategy, and prevents a lot of other tests from running.
Remove the early exit to prevent this.
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: ee00479d6702 ("selftests: vm: Try harder to allocate huge pages")
Signed-off-by: Nico Pache <[email protected]>
Cc: Ben Hutchings <[email protected]>
Cc: Muhammad Usama Anjum <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Muchun Song <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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User can put arbitrary new_order via debugfs for folio split test.
Although new_order check is added to split_huge_page_to_list_order() in
the prior commit, these two additional checks can avoid unnecessary folio
locking and split_folio_to_order() calls.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Zi Yan <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/linux-mm/[email protected]/
Cc: David Hildenbrand <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Yang Shi <[email protected]>
Cc: Yu Zhao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
|
A folio can only be split into lower orders.
Since there are no new_order checks in debugfs, any new_order can be
passed via debugfs into split_huge_page_to_list_to_order().
Check new_order to make sure it is smaller than input folio order.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: c010d47f107f ("mm: thp: split huge page to any lower order pages")
Signed-off-by: Zi Yan <[email protected]>
Reported-by: Dan Carpenter <[email protected]>
Closes: https://lore.kernel.org/linux-mm/[email protected]/
Cc: David Hildenbrand <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Matthew Wilcox (Oracle) <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Yang Shi <[email protected]>
Cc: Yu Zhao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
|
With cache_trim_mode on, reclaim logic doesn't bother reclaiming anon
pages. However, it should be more careful to use the mode because it's
going to prevent anon pages from being reclaimed even if there are a huge
number of anon pages that are cold and should be reclaimed. Even worse,
that leads kswapd_failures to reach MAX_RECLAIM_RETRIES and stopping
kswapd from functioning until direct reclaim eventually works to resume
kswapd.
So kswapd needs to retry its scan priority loop with cache_trim_mode off
again if the mode doesn't work for reclaim.
The problematic behavior can be reproduced by:
CONFIG_NUMA_BALANCING enabled
sysctl_numa_balancing_mode set to NUMA_BALANCING_MEMORY_TIERING
numa node0 (8GB local memory, 16 CPUs)
numa node1 (8GB slow tier memory, no CPUs)
Sequence:
1) echo 3 > /proc/sys/vm/drop_caches
2) To emulate the system with full of cold memory in local DRAM, run
the following dummy program and never touch the region:
mmap(0, 8 * 1024 * 1024 * 1024, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0);
3) Run any memory intensive work e.g. XSBench.
4) Check if numa balancing is working e.i. promotion/demotion.
5) Iterate 1) ~ 4) until numa balancing stops.
With this, you could see that promotion/demotion are not working because
kswapd has stopped due to ->kswapd_failures >= MAX_RECLAIM_RETRIES.
Interesting vmstat delta's differences between before and after are like:
+-----------------------+-------------------------------+
| interesting vmstat | before | after |
+-----------------------+-------------------------------+
| nr_inactive_anon | 321935 | 1664772 |
| nr_active_anon | 1780700 | 437834 |
| nr_inactive_file | 30425 | 40882 |
| nr_active_file | 14961 | 3012 |
| pgpromote_success | 356 | 1293122 |
| pgpromote_candidate | 21953245 | 1824148 |
| pgactivate | 1844523 | 3311907 |
| pgdeactivate | 50634 | 1554069 |
| pgfault | 31100294 | 6518806 |
| pgdemote_kswapd | 30856 | 2230821 |
| pgscan_kswapd | 1861981 | 7667629 |
| pgscan_anon | 1822930 | 7610583 |
| pgscan_file | 39051 | 57046 |
| pgsteal_anon | 386 | 2192033 |
| pgsteal_file | 30470 | 38788 |
| pageoutrun | 30 | 412 |
| numa_hint_faults | 27418279 | 2875955 |
| numa_pages_migrated | 356 | 1293122 |
+-----------------------+-------------------------------+
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Byungchul Park <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Yu Zhao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
|
Users of UFFDIO_CONTINUE may reasonably assume that a write memory barrier
is included as part of UFFDIO_CONTINUE. That is, a user may believe that
all writes it has done to a page that it is now UFFDIO_CONTINUE'ing are
guaranteed to be visible to anyone subsequently reading the page through
the newly mapped virtual memory region.
Today, such a user happens to be correct. mmget_not_zero(), for example,
is called as part of UFFDIO_CONTINUE (and comes before any PTE updates),
and it implicitly gives us a write barrier.
To be resilient against future changes, include an explicit smp_wmb().
While we're at it, optimize the smp_wmb() that is already incidentally
present for the HugeTLB case.
Merely making a syscall does not generally imply the memory ordering
constraints that we need (including on x86).
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: James Houghton <[email protected]>
Reviewed-by: Peter Xu <[email protected]>
Cc: Axel Rasmussen <[email protected]>
Cc: Muchun Song <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
|
My recent change to put_pages_list() dereferences folio->lru.next after
returning the folio to the page allocator. Usually this is now on the pcp
list with other free folios, so we try to free an already-free folio.
This only happens with lists that have more than 15 entries, so it wasn't
immediately discovered. Revert to using list_for_each_safe() so we
dereference lru.next before disposing of the folio.
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 24835f899c01 ("mm: use free_unref_folios() in put_pages_list()")
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Reported-by: "Borah, Chaitanya Kumar" <[email protected]>
Closes: https://lore.kernel.org/intel-gfx/SJ1PR11MB61292145F3B79DA58ADDDA63B9232@SJ1PR11MB6129.namprd11.prod.outlook.com/
Signed-off-by: Andrew Morton <[email protected]>
|
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When freeing a large folio, we must remove it from the deferred split list
before we uncharge it as each memcg has its own deferred split list (with
associated lock) and removing a folio from the deferred split list while
holding the wrong lock will corrupt that list and cause various related
problems.
Link: https://lore.kernel.org/linux-mm/[email protected]/
Link: https://lkml.kernel.org/r/[email protected]
Fixes: f77171d241e3 (mm: allow non-hugetlb large folios to be batch processed)
Fixes: 29f3843026cf (mm: free folios directly in move_folios_to_lru())
Fixes: bc2ff4cbc329 (mm: free folios in a batch in shrink_folio_list())
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Debugged-by: Ryan Roberts <[email protected]>
Tested-by: Ryan Roberts <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
|
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With this change the PWM hardware is only configured once (instead of
three times).
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>
|
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull affs update from David Sterba:
"One change to AFFS that removes use of SLAB_MEM_SPREAD, which is going
to be removed from MM code"
* tag 'affs-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
affs: remove SLAB_MEM_SPREAD flag usage
|
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When the CXL region is formed, the driver computes the performance data
for the region. However this data is not available at the node data
collection that has been populated by the HMAT during kernel
initialization. Add a memory hotplug notifier to update the access
coordinates to the 'struct memory_target' context kept by the
HMAT_REPORTING code.
Add CXL_CALLBACK_PRI for a memory hotplug callback priority. Set the
priority number to be called before HMAT_CALLBACK_PRI. The CXL update must
happen before hmat_callback().
A new HMAT_REPORTING helper hmat_update_target_coordinates() is added in
order to allow CXL to update the memory_target access coordinates.
A new ext_updated member is added to the memory_target to indicate that
the access coordinates within the memory_target has been updated by an
external agent such as CXL. This prevents data being overwritten by the
hmat_update_target_attrs() triggered by hmat_callback().
Cc: Andrew Morton <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Reviewed-by: Huang, Ying <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
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Add read/write latencies and bandwidth sysfs attributes for the enabled CXL
region. The bandwidth is the aggregated bandwidth of all devices that
contribute to the CXL region. The latency is the worst latency of the
device amongst all the devices that contribute to the CXL region.
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
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Calculate and store the performance data for a CXL region. Find the worst
read and write latency for all the included ranges from each of the devices
that attributes to the region and designate that as the latency data. Sum
all the read and write bandwidth data for each of the device region and
that is the total bandwidth for the region.
The perf list is expected to be constructed before the endpoint decoders
are registered and thus there should be no early reading of the entries
from the region assemble action. The calling of the region qos calculate
function is under the protection of cxl_dpa_rwsem and will ensure that
all DPA associated work has completed.
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
Move setting of cxlmd->endpoint to before calling add_device() on the port
device. Otherwise when referencing cxlmd->endpoint in region discovery code
that is triggered by the port driver probe function, the endpoint port
pointer is not valid.
Current code does not hit this issue yet since cxlmd->endpoint is not being
referenced during region discovery. However follow on code that does
performance calculations will.
Tested-by: Wonjae Lee <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
Retrieve the qos_class (QTG ID) using the access coordinates from the
nearest CPU rather than the nearst initiator that may not be a CPU.
This may be the more appropriate number that applications care about.
For most cases, access0 and access1 have the same values.
Link: https://lore.kernel.org/linux-cxl/[email protected]/
Suggested-by: Jonathan Cameron <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
The difference between access class 0 and access class 1 for 'struct
access_coordinate', if any, is that class 0 is for the distance from
the target to the closest initiator and that class 1 is for the distance
from the target to the closest CPU. For CXL memory, the nearest initiator
may not necessarily be a CPU node. The performance path from the CXL
endpoint to the host bridge should remain the same. However, the numbers
extracted and stored from HMAT is the difference for the two access
classes. Split out the performance numbers for the host bridge (generic
target) from the calculation of the entire path in order to allow
calculation of both access classes for a CXL region.
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
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Refactor the common code of combining coordinates in order to reduce code.
Create a new function cxl_cooordinates_combine() it combine two 'struct
access_coordinate'.
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
classes
Update acpi_get_genport_coordinates() to allow retrieval of both access
classes of the 'struct access_coordinate' for a generic target. The update
will allow CXL code to compute access coordinates for both access class.
Cc: Rafael J. Wysocki <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
In order to compute access0 and access1 classes for CXL memory, 2 levels
of generic port information must be stored. Access0 will indicate the
generic port access coordinates to the closest initiator and access1
will indicate the generic port access coordinates to the cloest CPU.
Cc: Rafael J. Wysocki <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
|
|
Both generic node and HMAT handling code have been using magic numbers to
indicate access classes for 'struct access_coordinate'. Introduce enums to
enumerate the access0 and access1 classes shared by the two subsystems.
Update the function parameters and callers as appropriate to utilize the
new enum.
Access0 is named to ACCESS_COORDINATE_LOCAL in order to indicate that the
access class is for 'struct access_coordinate' between a target node and
the nearest initiator node.
Access1 is named to ACCESS_COORDINATE_CPU in order to indicate that the
access class is for 'struct access_coordinate' between a target node and
the nearest CPU node.
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dan Williams <[email protected]>
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