Alexandre Ghiti 1d84afaf02 riscv: Fix fully ordered LR/SC xchg[8|16]() implementations ...

The fully ordered versions of xchg[8|16]() using LR/SC lack the
necessary memory barriers to guarantee the order.

Fix this by matching what is already implemented in the fully ordered
versions of cmpxchg() using LR/SC.

Suggested-by: Andrea Parri <parri.andrea@gmail.com>
Reported-by: Andrea Parri <parri.andrea@gmail.com>
Closes: https://lore.kernel.org/linux-riscv/ZlYbupL5XgzgA0MX@andrea/T/#u
Fixes: a8ed2b7a2c ("riscv/cmpxchg: Implement xchg for variables of size 1 and 2")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20240530145546.394248-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

2024-05-30 09:43:14 -07:00

..

boot

riscv: make image compression configurable

2024-05-22 16:12:44 -07:00

configs

Merge tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-05-22 09:56:00 -07:00

crypto

crypto: riscv - add vector crypto accelerated AES-CBC-CTS

2024-03-20 08:56:11 -07:00

errata

Merge tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-05-22 09:56:00 -07:00

include

riscv: Fix fully ordered LR/SC xchg[8|16]() implementations

2024-05-30 09:43:14 -07:00

kernel

riscv: prevent pt_regs corruption for secondary idle threads

2024-05-30 09:42:51 -07:00

kvm

Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2024-05-18 12:39:20 -07:00

lib

riscv: uaccess: Relax the threshold for fast path

2024-05-22 16:12:55 -07:00

mm

riscv: mm: accelerate pagefault when badaccess

2024-05-22 16:12:56 -07:00

net

Merge tag 'modules-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2024-05-15 14:05:08 -07:00

purgatory

Makefile: remove redundant tool coverage variables

2024-05-14 23:35:48 +09:00

tools

riscv: Check relocations at compile time

2023-04-19 07:46:32 -07:00

Kbuild

RISC-V: hook new crypto subdir into build-system

2024-01-22 17:55:17 -08:00

Kconfig

riscv: enable HAVE_ARCH_HUGE_VMAP for XIP kernel

2024-05-30 09:42:52 -07:00

Kconfig.debug

riscv: Add tests for riscv module loading

2023-11-07 14:59:32 -08:00

Kconfig.errata

riscv: thead: Rename T-Head PBMT to MAE

2024-04-25 10:22:33 -07:00

Kconfig.socs

RISC-V: drop SOC_VIRT for ARCH_VIRT

2024-04-10 11:37:50 +01:00

Makefile

Merge tag 'riscv-for-linus-6.10-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-05-24 10:46:35 -07:00

Makefile.postlink

kbuild: remove ARCH_POSTLINK from module builds

2023-10-28 21:10:08 +09:00