On Tue, 2019-05-14 at 09:05:16 UTC, Christophe Leroy wrote: > This patch drops the assembly PPC64 version of flush_dcache_range() > and re-uses the PPC32 static inline version. > > With GCC 8.1, the following code is generated: > > void flush_test(unsigned long start, unsigned long stop) > { > flush_dcache_range(start, stop); > } > > 0000000000000130 <.flush_test>: > 130: 3d 22 00 00 addis r9,r2,0 > 132: R_PPC64_TOC16_HA .data+0x8 > 134: 81 09 00 00 lwz r8,0(r9) > 136: R_PPC64_TOC16_LO .data+0x8 > 138: 3d 22 00 00 addis r9,r2,0 > 13a: R_PPC64_TOC16_HA .data+0xc > 13c: 80 e9 00 00 lwz r7,0(r9) > 13e: R_PPC64_TOC16_LO .data+0xc > 140: 7d 48 00 d0 neg r10,r8 > 144: 7d 43 18 38 and r3,r10,r3 > 148: 7c 00 04 ac hwsync > 14c: 4c 00 01 2c isync > 150: 39 28 ff ff addi r9,r8,-1 > 154: 7c 89 22 14 add r4,r9,r4 > 158: 7c 83 20 50 subf r4,r3,r4 > 15c: 7c 89 3c 37 srd. r9,r4,r7 > 160: 41 82 00 1c beq 17c <.flush_test+0x4c> > 164: 7d 29 03 a6 mtctr r9 > 168: 60 00 00 00 nop > 16c: 60 00 00 00 nop > 170: 7c 00 18 ac dcbf 0,r3 > 174: 7c 63 42 14 add r3,r3,r8 > 178: 42 00 ff f8 bdnz 170 <.flush_test+0x40> > 17c: 7c 00 04 ac hwsync > 180: 4c 00 01 2c isync > 184: 4e 80 00 20 blr > 188: 60 00 00 00 nop > 18c: 60 00 00 00 nop > > Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/22e9c88d486a0536d337d6e0973968be0a4cd4b2 cheers