On Sat, 29 Aug 2026 09:49:00 +0530, Ritesh Harjani (IBM) wrote:
> So the syscall return sequence is as follows:
> A syscall return to userspace is prepared and then a short asm sequence
> that actually does the RFI. Note that this asm range is restartable i.e.
> EE is still on, so an interrupt (e.g. decrementer or external interrupt)
> can hit while SRR/GPRs are being loaded. This is defined via:
>
> RESTART_TABLE(.Lsyscall_rst_start, .Lsyscall_rst_end, syscall_restart)
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc: Don't drop _TIF_RESTOREALL on syscall restart
https://git.kernel.org/powerpc/c/c7585b8e99ad97a0f5dd21e45c90a33aeab0d92b
cheers
