Messages in this thread | | | From | Michael Ellerman <> | Subject | Re: [PATCH v5 00/22] powerpc/32: Implement C syscall entry/exit | Date | Fri, 12 Feb 2021 11:19:55 +1100 (AEDT) |
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On Mon, 8 Feb 2021 15:10:19 +0000 (UTC), Christophe Leroy wrote: > This series implements C syscall entry/exit for PPC32. It reuses > the work already done for PPC64. > > This series is based on today's merge-test (b6f72fc05389e3fc694bf5a5fa1bbd33f61879e0) > > In terms on performance we have the following number of cycles on an > 8xx running null_syscall benchmark: > - mainline: 296 cycles > - after patch 4: 283 cycles > - after patch 16: 304 cycles > - after patch 17: 348 cycles > - at the end of the series: 320 cycles > > [...]
Patches 1-15 and 21 applied to powerpc/next.
[01/22] powerpc/32s: Add missing call to kuep_lock on syscall entry https://git.kernel.org/powerpc/c/57fdfbce89137ae85cd5cef48be168040a47dd13 [02/22] powerpc/32: Always enable data translation on syscall entry https://git.kernel.org/powerpc/c/eca2411040c1ee15b8882c6427fb4eb5a48ada69 [03/22] powerpc/32: On syscall entry, enable instruction translation at the same time as data https://git.kernel.org/powerpc/c/76249ddc27080b6b835a89cedcc4185b3b5a6b23 [04/22] powerpc/32: Reorder instructions to avoid using CTR in syscall entry https://git.kernel.org/powerpc/c/2c59e5104821c5720e88bafa9e522f8bea9ce8fa [05/22] powerpc/irq: Add helper to set regs->softe https://git.kernel.org/powerpc/c/fb5608fd117a8b48752d2b5a7e70847c1ed33d33 [06/22] powerpc/irq: Rework helpers that manipulate MSR[EE/RI] https://git.kernel.org/powerpc/c/08353779f2889305f64e04de3e46ed59ed60f859 [07/22] powerpc/irq: Add stub irq_soft_mask_return() for PPC32 https://git.kernel.org/powerpc/c/6650c4782d5788346a25a4f698880d124f2699a0 [08/22] powerpc/syscall: Rename syscall_64.c into interrupt.c https://git.kernel.org/powerpc/c/ab1a517d55b01b54ba70f5d54f926f5ab4b18339 [09/22] powerpc/syscall: Make interrupt.c buildable on PPC32 https://git.kernel.org/powerpc/c/344bb20b159dd0996e521c0d4c131a6ae10c322a [10/22] powerpc/syscall: Use is_compat_task() https://git.kernel.org/powerpc/c/72b7a9e56b25babfe4c90bf3ce88285c7fb62ab9 [11/22] powerpc/syscall: Save r3 in regs->orig_r3 https://git.kernel.org/powerpc/c/8875f47b7681aa4e4484a9b612577b044725f839 [12/22] powerpc/syscall: Change condition to check MSR_RI https://git.kernel.org/powerpc/c/c01b916658150e98f00a4981750c37a3224c8735 [13/22] powerpc/32: Always save non volatile GPRs at syscall entry https://git.kernel.org/powerpc/c/fbcee2ebe8edbb6a93316f0a189ae7fcfaa7094f [14/22] powerpc/syscall: implement system call entry/exit logic in C for PPC32 https://git.kernel.org/powerpc/c/6f76a01173ccaa363739f913394d4e138d92d718 [15/22] powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry https://git.kernel.org/powerpc/c/4d67facbcbdb3d9e3c9cb82e4ec47fc63d298dd8 [21/22] powerpc/32: Remove the counter in global_dbcr0 https://git.kernel.org/powerpc/c/eb595eca74067b78d36fb188b555e30f28686fc7
cheers
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