Alexandre Ghiti ab83647fad riscv: Add qspinlock support ... In order to produce a generic kernel, a user can select CONFIG_COMBO_SPINLOCKS which will fallback at runtime to the ticket spinlock implementation if Zabha or Ziccrse are not present. Note that we can't use alternatives here because the discovery of extensions is done too late and we need to start with the qspinlock implementation because the ticket spinlock implementation would pollute the spinlock value, so let's use static keys. This is largely based on Guo's work and Leonardo reviews at [1]. Link: https://lore.kernel.org/linux-riscv/20231225125847.2778638-1-guoren@kernel.org/ [1] Signed-off-by: Guo Ren <guoren@kernel.org> Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Andrea Parri <parri.andrea@gmail.com> Link: https://lore.kernel.org/r/20241103145153.105097-14-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2024-11-11 07:33:20 -08:00
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core	Documentation: Drop IA64 from feature descriptions	2023-09-11 08:13:18 +00:00
debug	LoongArch: Add ARCH_HAS_DEBUG_VM_PGTABLE support	2024-07-20 22:40:59 +08:00
io/dma-contiguous	Documentation: Drop IA64 from feature descriptions	2023-09-11 08:13:18 +00:00
locking	riscv: Add qspinlock support	2024-11-11 07:33:20 -08:00
perf	Documentation: Drop IA64 from feature descriptions	2023-09-11 08:13:18 +00:00
sched	membarrier: riscv: Provide core serializing command	2024-02-15 08:04:14 -08:00
scripts	Documentation/features-refresh.sh: Only sed the beginning "arch" of ARCH_DIR	2022-12-05 02:50:12 -07:00
seccomp/seccomp-filter	Documentation: Drop IA64 from feature descriptions	2023-09-11 08:13:18 +00:00
time	Documentation: Drop IA64 from feature descriptions	2023-09-11 08:13:18 +00:00
vm	x86: remove PG_uncached	2024-09-03 21:15:46 -07:00
arch-support.txt	Documentation/features: mark BATCHED_UNMAP_TLB_FLUSH doesn't apply to ARM64	2021-03-15 13:17:40 -06:00
list-arch.sh	scripts: get_feat.pl: use its implementation for list-arch.sh	2020-12-03 15:10:14 -07:00