Ben Widawsky 583fa5e71c cxl/mem: Add basic IOCTL interface ... Add a straightforward IOCTL that provides a mechanism for userspace to query the supported memory device commands. CXL commands as they appear to userspace are described as part of the UAPI kerneldoc. The command list returned via this IOCTL will contain the full set of commands that the driver supports, however, some of those commands may not be available for use by userspace. Memory device commands first appear in the CXL 2.0 specification. They are submitted through a mailbox mechanism specified in the CXL 2.0 specification. The send command allows userspace to issue mailbox commands directly to the hardware. The list of available commands to send are the output of the query command. The driver verifies basic properties of the command and possibly inspect the input (or output) payload to determine whether or not the command is allowed (or might taint the kernel). Reported-by: kernel test robot <lkp@intel.com> # bug in earlier revision Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> (v2) Cc: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/20210217040958.1354670-5-ben.widawsky@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>		2021-02-16 20:36:38 -08:00
..
ABI	cxl/mem: Register CXL memX devices	2021-02-16 20:36:38 -08:00
PCI	…
RCU	docs: Fix reST markup when linking to sections	2020-12-31 15:44:47 -07:00
accounting	…
admin-guide	dm integrity: conditionally disable "recalculate" feature	2021-01-21 15:05:21 -05:00
arm	ARM updates for 5.11:	2020-12-22 13:34:27 -08:00
arm64	ARM:	2020-12-20 10:44:05 -08:00
block	block-5.10-2020-10-24	2020-10-24 12:46:42 -07:00
bpf	…
cdrom	…
core-api	atomic: remove further references to atomic_ops	2020-12-31 15:51:33 -07:00
cpu-freq	…
crypto	…
dev-tools	kasan: fix HW_TAGS boot parameters	2021-01-24 10:34:52 -08:00
devicetree	Merge branch 'for-rc-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds	2021-01-31 11:23:35 -08:00
doc-guide	Documentation: doc-guide: fixes to sphinx.rst	2020-12-31 15:49:51 -07:00
driver-api	cxl/mem: Add basic IOCTL interface	2021-02-16 20:36:38 -08:00
fault-injection	A handful of late-arriving documentation fixes.	2020-10-23 17:13:53 -07:00
fb	drm fixes (round two) for 5.10-rc1	2020-10-23 13:56:34 -07:00
features	ARM updates for 5.11:	2020-12-22 13:34:27 -08:00
filesystems	Various bug fixes and cleanups for ext4; no new features this cycle.	2020-12-24 14:16:02 -08:00
firmware-guide	Documentation: ACPI: EINJ: Fix error type values for PCIe errors	2021-01-14 13:11:25 +01:00
firmware_class	…
fpga	…
gpu	drm/docs: Fix todo.rst	2020-11-18 11:51:58 +01:00
hid	Merge branch 'for-5.11/core' into for-linus	2020-12-16 11:38:38 +01:00
hwmon	hwmon: (sbtsi_temp) Fix Documenation kernel-doc warning	2020-12-30 08:05:20 -08:00
i2c	…
ia64	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
ide	…
iio	…
infiniband	…
input	Input: document inhibiting	2020-12-02 22:10:37 -08:00
isdn	…
kbuild	Documentation: kbuild: Fix section reference	2021-01-11 05:14:38 +09:00
kernel-hacking	docs: Fix reST markup when linking to sections	2020-12-31 15:44:47 -07:00
leds	Changes for 5.11-rc1. Small cleanups/fixes mostly thanks to Marek,	2020-12-16 14:56:29 -08:00
litmus-tests	…
livepatch	…
locking	Documentation: seqlock: s/LOCKTYPE/LOCKNAME/g	2020-12-09 17:08:49 +01:00
m68k	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
maintainer	…
mhi	…
mips	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
misc-devices	Documentation: remove mic/index from misc-devices/index.rst	2020-11-04 11:38:32 +01:00
netlabel	…
networking	doc: networking: ip-sysctl: Document conf/all/disable_ipv6 and conf/default/disable_ipv6	2021-01-23 13:33:12 -08:00
nios2	docs: nios2: add missing ReST file	2020-12-07 08:35:21 -07:00
nvdimm	…
openrisc	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
parisc	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
pcmcia	…
power	PM: EM: Update Energy Model with new flag indicating power scale	2020-11-10 20:29:28 +01:00
powerpc	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
process	docs: remove mention of ENABLE_MUST_CHECK	2021-01-07 14:41:38 -07:00
riscv	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
s390	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
scheduler	Power management updates for 5.11-rc1	2020-12-15 16:30:31 -08:00
scsi	…
security	…
sh	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
sound	ASoC: Fixes for v5.11	2021-01-18 19:51:49 +01:00
sparc	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
sphinx	Kbuild updates for v5.11	2020-12-22 14:02:39 -08:00
sphinx-static	…
spi	…
staging	…
target	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
timers	…
trace	Kbuild updates for v5.11	2020-12-22 14:02:39 -08:00
translations	Networking updates for 5.11	2020-12-15 13:22:29 -08:00
usb	…
userspace-api	cxl/mem: Add basic IOCTL interface	2021-02-16 20:36:38 -08:00
virt	KVM: Documentation: Update description of KVM_{GET,CLEAR}_DIRTY_LOG	2021-01-25 18:52:08 -05:00
vm	mm/lru: revise the comments of lru_lock	2020-12-15 14:48:04 -08:00
w1	w1: w1_therm: Rename conflicting sysfs attribute 'eeprom' to 'eeprom_cmd'	2020-11-12 08:50:13 +01:00
watchdog	…
x86	A much quieter cycle for documentation (happily), with, one hopes, the bulk	2020-12-14 16:55:54 -08:00
xtensa	A much quieter cycle for documentation (happily), with, one hopes, the bulk	2020-12-14 16:55:54 -08:00
.gitignore	…
COPYING-logo	…
Changes	…
CodingStyle	…
Kconfig	docs: Kconfig/Makefile: add a check for broken ABI files	2020-10-30 13:08:07 +01:00
Makefile	A small number of fixes, plus a build tweak to respect the desire for	2020-11-03 09:57:30 -08:00
SubmittingPatches	…
asm-annotations.rst	x86/entry: Emit a symbol for register restoring thunk	2021-01-14 17:18:25 +01:00
atomic_bitops.txt	…
atomic_t.txt	…
conf.py	docs: Note that sphinx 1.7 will be required soon	2020-12-11 13:53:38 -07:00
docutils.conf	…
dontdiff	…
index.rst	docs: archis: add a per-architecture features list	2020-12-03 15:10:15 -07:00
logo.gif	…
memory-barriers.txt	docs/memory-barriers.txt: Fix a typo in CPU MEMORY BARRIERS section	2020-11-06 17:24:51 -08:00
watch_queue.rst	…