Re: [PATCH 4/4] powerpc/64: system call implement the bulk of the logic in C

2019-08-27 Thread kbuild test robot
Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [cannot apply to v5.3-rc6 next-20190827] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Nichola

Re: [PATCH 4/4] powerpc/64: system call implement the bulk of the logic in C

2019-08-27 Thread Nicholas Piggin
Christophe Leroy's on August 27, 2019 4:46 pm: > > > Le 27/08/2019 à 05:30, Nicholas Piggin a écrit : >> System call entry and particularly exit code is beyond the limit of what >> is reasonable to implement in asm. >> >> This conversion moves all conditional branches out of the asm code, >> exc

Re: [PATCH 4/4] powerpc/64: system call implement the bulk of the logic in C

2019-08-26 Thread Christophe Leroy
Le 27/08/2019 à 05:30, Nicholas Piggin a écrit : System call entry and particularly exit code is beyond the limit of what is reasonable to implement in asm. This conversion moves all conditional branches out of the asm code, except a relatively simple test to see whether all GPRs should be re

[PATCH 4/4] powerpc/64: system call implement the bulk of the logic in C

2019-08-26 Thread Nicholas Piggin
System call entry and particularly exit code is beyond the limit of what is reasonable to implement in asm. This conversion moves all conditional branches out of the asm code, except a relatively simple test to see whether all GPRs should be restored at exit time. Null syscall test is about 5% fa