WSL2-Linux-Kernel/include
Mathieu Desnoyers 3bb11f3f68 rseq: Remove broken uapi field layout on 32-bit little endian
[ Upstream commit bfdf4e6208 ]

The rseq rseq_cs.ptr.{ptr32,padding} uapi endianness handling is
entirely wrong on 32-bit little endian: a preprocessor logic mistake
wrongly uses the big endian field layout on 32-bit little endian
architectures.

Fortunately, those ptr32 accessors were never used within the kernel,
and only meant as a convenience for user-space.

Remove those and replace the whole rseq_cs union by a __u64 type, as
this is the only thing really needed to express the ABI. Document how
32-bit architectures are meant to interact with this field.

Fixes: ec9c82e03a ("rseq: uapi: Declare rseq_cs field as union, update includes")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220127152720.25898-1-mathieu.desnoyers@efficios.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-08 14:23:10 +02:00
..
acpi ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions 2022-01-27 11:04:49 +01:00
asm-generic bitops: protect find_first_{,zero}_bit properly 2022-01-27 11:05:34 +01:00
clocksource
crypto
drm drm/ttm: remove ttm_bo_vm_insert_huge() 2021-11-18 19:17:08 +01:00
dt-bindings
keys
kunit
kvm
linux stack: Constrain and fix stack offset randomization with Clang builds 2022-04-08 14:23:06 +02:00
math-emu
media media: cec: fix a deadlock situation 2022-01-27 11:02:53 +01:00
memory memory: renesas-rpc-if: Correct QSPI data transfer in Manual mode 2021-11-18 19:16:01 +01:00
misc
net vsock: each transport cycles only on its own sockets 2022-03-23 09:16:41 +01:00
pcmcia
ras
rdma RDMA/netlink: Add __maybe_unused to static inline in C file 2021-11-25 09:49:07 +01:00
scsi scsi: core: sd: Add silence_suspend flag to suppress some PM messages 2022-04-08 14:22:54 +02:00
soc
sound ALSA: pcm: Fix potential AB/BA lock with buffer_mutex and mmap_lock 2022-04-08 14:22:55 +02:00
target scsi: target: Fix ordered tag handling 2021-11-25 09:48:29 +01:00
trace ext4: fix ext4_fc_stats trace point 2022-04-08 14:22:58 +02:00
uapi rseq: Remove broken uapi field layout on 32-bit little endian 2022-04-08 14:23:10 +02:00
vdso
video
xen xen/gnttab: fix gnttab_end_foreign_access() without page specified 2022-03-11 12:22:37 +01:00