This is a note to let you know that I've just added the patch titled
riscv: Only check online cpus for emulated accesses
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
riscv-only-check-online-cpus-for-emulated-accesses.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 15e52df3c8151b30011580da94589ddabe089aaf
Author: Charlie Jenkins <charlie@xxxxxxxxxxxx>
Date: Fri Mar 8 10:25:56 2024 -0800
riscv: Only check online cpus for emulated accesses
[ Upstream commit 313130c62cf1fc410ac8730b291fd4fde582d032 ]
The unaligned access checker only sets valid values for online cpus.
Check for these values on online cpus rather than on present cpus.
Signed-off-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Fixes: 71c54b3d169d ("riscv: report misaligned accesses emulation to hwprobe")
Tested-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240308-disable_misaligned_probe_config-v9-2-a388770ba0ce@xxxxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
index 8ded225e8c5b1..c2ed4e689bf96 100644
--- a/arch/riscv/kernel/traps_misaligned.c
+++ b/arch/riscv/kernel/traps_misaligned.c
@@ -632,7 +632,7 @@ void unaligned_emulation_finish(void)
* accesses emulated since tasks requesting such control can run on any
* CPU.
*/
- for_each_present_cpu(cpu) {
+ for_each_online_cpu(cpu) {
if (per_cpu(misaligned_access_speed, cpu) !=
RISCV_HWPROBE_MISALIGNED_EMULATED) {
return;
