tree 15e4bdf535cbe812c0c232481c3a5cefbb529c4b
parent 1a633bdc8fd9e9e4a9f9a668ae122edfc5aacc86
author Jason Gunthorpe <jgg@nvidia.com> 1712853974 -0300
committer Jason Gunthorpe <jgg@nvidia.com> 1713816679 -0300

x86: Stop using weak symbols for __iowrite32_copy()

Start switching iomap_copy routines over to use #define and arch provided
inline/macro functions instead of weak symbols.

Inline functions allow more compiler optimization and this is often a
driver hot path.

x86 has the only weak implementation for __iowrite32_copy(), so replace it
with a static inline containing the same single instruction inline
assembly. The compiler will generate the "mov edx,ecx" in a more optimal
way.

Remove iomap_copy_64.S

Link: https://lore.kernel.org/r/1-v3-1893cd8b9369+1925-mlx5_arm_wc_jgg@nvidia.com
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>