linux

iv/linux

History

Christophe Leroy c88da29b4d powerpc/bpf/32: introduce a second source register for ALU operations

At the time being, all ALU operation are performed with same L-source
and destination, requiring the L-source to be moved into destination via
a separate register move, like:

  70:	7f c6 f3 78 	mr      r6,r30
  74:	7f a5 eb 78 	mr      r5,r29
  78:	30 c6 ff f4 	addic   r6,r6,-12
  7c:	7c a5 01 d4 	addme   r5,r5

Introduce a second source register to all ALU operations. For the time
being that second source register is made equal to the destination
register.

That change will allow, via following patch, to optimise the generated
code as:

  70:	30 de ff f4 	addic   r6,r30,-12
  74:	7c bd 01 d4 	addme   r5,r29

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d5aaaba50d9d6b4a0e9f0cd4a5e34101aca1e247.1675245773.git.christophe.leroy@csgroup.eu

2023-02-10 22:17:35 +11:00

boot

powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage

2023-01-30 17:42:28 +11:00

configs

USB/Thunderbolt driver changes for 6.2-rc1

2022-12-16 03:22:53 -08:00

crypto

treewide: use get_random_u32_below() instead of deprecated function

2022-11-18 02:15:15 +01:00

include

powerpc/pci: Add option for using pci_to_OF_bus_map